新增用例

2019-01-14 01:02:37 +08:00 · 2019-01-14 01:02:37 +08:00 · 443b1b4b37
commit 443b1b4b37
parent 2245a70877
43 changed files with 1353 additions and 12 deletions
--- a/README.md
+++ b/README.md
@ -82,16 +82,12 @@ spring-cloud：Finchley.SR2

 <br/>

-## 4.分布式session和分布式事务
+## 4.spring分布式session和分布式事务

-| 描述                                     | sample                       | 官方文档                                                     |
-| ---------------------------------------- | ---------------------------- | ------------------------------------------------------------ |
-| 分布式session解决方案（一）              | spring session               | [spring session](https://spring.io/projects/spring-session#learn) |
-| 分布式session 解决方案（二）             | spring boot + spring session |                                                              |
-| 分布式session 解决方案（三）             | memcached-session-manager    |                                                              |
-| 分布式事务解决方案（一）——JPA            | 待补充                       |                                                              |
-| 分布式事务解决方案（二）——Spring事务同步 | 待补充                       |                                                              |
-| 分布式事务解决方案（三）——链式事务       | 待补充                       |                                                              |
+| sample                       | 描述                       | 官方文档                                                     |
+| ---------------------------- | -------------------------- | ------------------------------------------------------------ |
+| spring-session               | spring 分布式 session      | [spring session](https://spring.io/projects/spring-session#learn) |
+| spring boot + spring session | spring boot 分布式 session | [spring session](https://spring.io/projects/spring-session#learn) |

 <br/>

--- a/solution/msm/pom.xml
+++ b/solution/msm/pom.xml
@ -0,0 +1,67 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <packaging>war</packaging>
+
+    <groupId>com.heibaiying</groupId>
+    <artifactId>msm</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>8</source>
+                    <target>8</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+    <properties>
+        <spring-base-version>5.1.3.RELEASE</spring-base-version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+            <version>${spring-base-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-beans</artifactId>
+            <version>${spring-base-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-core</artifactId>
+            <version>${spring-base-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-web</artifactId>
+            <version>${spring-base-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-webmvc</artifactId>
+            <version>${spring-base-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>javax.servlet</groupId>
+            <artifactId>javax.servlet-api</artifactId>
+            <version>4.0.1</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>1.18.0</version>
+        </dependency>
+    </dependencies>
+
+</project>
--- a/solution/msm/src/main/java/com/heibaiying/bean/User.java
+++ b/solution/msm/src/main/java/com/heibaiying/bean/User.java
@ -0,0 +1,17 @@
+package com.heibaiying.bean;
+
+import lombok.Data;
+
+import java.io.Serializable;
+
+/**
+ * @author : heibaiying
+ */
+@Data
+public class User implements Serializable {
+
+    private long userId;
+    private String username;
+    private String password;
+
+}
--- a/solution/msm/src/main/java/com/heibaiying/controller/LoginController.java
+++ b/solution/msm/src/main/java/com/heibaiying/controller/LoginController.java
@ -0,0 +1,38 @@
+package com.heibaiying.controller;
+
+import com.heibaiying.bean.User;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpSession;
+
+/**
+ * @author : heibaiying
+ * @description : 登录
+ */
+@Controller
+public class LoginController {
+
+    @RequestMapping
+    public String index(){
+        return "index";
+    }
+
+    @RequestMapping("home")
+    public String home(){
+        return "home";
+    }
+
+    @PostMapping("login")
+    public String login(User user, HttpSession session, HttpServletRequest request, Model model){
+        // 随机生成用户id
+        user.setUserId(Math.round(Math.floor(Math.random() *10*1000)));
+        // 将用户信息保存到id中
+        session.setAttribute("USER",user);
+        return "redirect:home";
+    }
+
+}
--- a/solution/msm/src/main/resources/springApplication.xml
+++ b/solution/msm/src/main/resources/springApplication.xml
@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xmlns:context="http://www.springframework.org/schema/context"
+       xmlns:mvc="http://www.springframework.org/schema/mvc"
+       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
+        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd
+        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd">
+
+    <!-- 开启注解包扫描-->
+    <context:component-scan base-package="com.heibaiying.*"/>
+
+    <!--使用默认的Servlet来响应静态文件-->
+    <mvc:default-servlet-handler/>
+
+
+    <mvc:annotation-driven/>
+
+    <!-- 配置视图解析器 -->
+    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"
+          id="internalResourceViewResolver">
+        <!-- 前缀 -->
+        <property name="prefix" value="/WEB-INF/jsp/"/>
+        <!-- 后缀 -->
+        <property name="suffix" value=".jsp"/>
+    </bean>
+
+
+</beans>
--- a/solution/msm/src/main/webapp/WEB-INF/jsp/home.jsp
+++ b/solution/msm/src/main/webapp/WEB-INF/jsp/home.jsp
@ -0,0 +1,11 @@
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<html>
+<head>
+    <title>主页面</title>
+</head>
+<body>
+    <h5>服务器:<%=request.getServerName()+":"+request.getServerPort()%></h5>
+    <h5>登录用户: ${sessionScope.USER.username} </h5>
+    <h5>用户编号: ${sessionScope.USER.userId} </h5>
+</body>
+</html>
--- a/solution/msm/src/main/webapp/WEB-INF/jsp/index.jsp
+++ b/solution/msm/src/main/webapp/WEB-INF/jsp/index.jsp
@ -0,0 +1,14 @@
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<html>
+<head>
+    <title>登录页面</title>
+</head>
+<body>
+<h5>服务器:<%=request.getServerName()+":"+request.getServerPort()%></h5>
+<form action="${pageContext.request.contextPath}/login" method="post">
+     用户：<input type="text" name="username"><br/>
+     密码：<input type="password" name="password"><br/>
+    <button type="submit">登录</button>
+</form>
+</body>
+</html>
--- a/solution/msm/src/main/webapp/WEB-INF/web.xml
+++ b/solution/msm/src/main/webapp/WEB-INF/web.xml
@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
+		 http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
+         version="3.1">
+
+    <!--配置spring前端控制器-->
+    <servlet>
+        <servlet-name>springMvc</servlet-name>
+        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
+        <init-param>
+            <param-name>contextConfigLocation</param-name>
+            <param-value>classpath:springApplication.xml</param-value>
+        </init-param>
+        <load-on-startup>1</load-on-startup>
+    </servlet>
+
+    <servlet-mapping>
+        <servlet-name>springMvc</servlet-name>
+        <url-pattern>/</url-pattern>
+    </servlet-mapping>
+
+    <!--防止中文乱码-->
+    <filter>
+        <filter-name>characterEncodingFilter</filter-name>
+        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
+        <init-param>
+            <param-name>encoding</param-name>
+            <param-value>UTF-8</param-value>
+        </init-param>
+        <init-param>
+            <param-name>forceEncoding</param-name>
+            <param-value>true</param-value>
+        </init-param>
+    </filter>
+    <filter-mapping>
+        <filter-name>characterEncodingFilter</filter-name>
+        <url-pattern>/*</url-pattern>
+    </filter-mapping>
+
+</web-app>
--- a/solution/spring-boot-session/README.md
+++ b/solution/spring-boot-session/README.md
@ -0,0 +1,152 @@
+# spring boot 实现分布式 session
+
+## 一、项目结构
+
+![spring-cloud-eureka](D:\spring-samples-for-all\pictures\spring-boot-session.png)
+
+
+
+## 二、分布式session的配置
+
+#### 2.1 引入依赖
+
+```xml
+<!--分布式 session 相关依赖-->
+<dependency>
+    <groupId>org.springframework.boot</groupId>
+    <artifactId>spring-boot-starter-data-redis</artifactId>
+</dependency>
+<dependency>
+    <groupId>org.springframework.session</groupId>
+    <artifactId>spring-session-data-redis</artifactId>
+</dependency>
+```
+
+#### 2.2 Redis配置
+
+```yaml
+spring:
+  redis:
+    host: 127.0.0.1
+    port: 6379
+    jedis:
+      pool:
+        # 连接池最大连接数,使用负值表示无限制。
+        max-active: 8
+        # 连接池最大阻塞等待时间,使用负值表示无限制。
+        max-wait: -1s
+        # 连接池最大空闲数,使用负值表示无限制。
+        max-idle: 8
+        # 连接池最小空闲连接，只有设置为正值时候才有效
+        min-idle: 1
+    timeout: 300ms
+  session:
+    # session 存储方式 支持redis、mongo、jdbc、hazelcast
+    store-type: redis
+
+# 如果是集群节点 采用如下配置指定节点
+#spring.redis.cluster.nodes
+
+```
+
+有两点需要特别说明：
+
+1. spring-session 不仅提供了redis作为公共session存储的方案，同时也支持jdbc、mongodb、Hazelcast等作为公共session的存储，可以用session.store-type 指定；
+2. 对于redis 存储方案而言，官方也提供了不止一种整合方式，这里我们选取的整合方案是jedis客户端作为连接，当然也可以使用Lettuce作为客户端连接。
+
+#### 2.3 启动类上添加@EnableRedisHttpSession 注解开启 spring-session-redis 整合方案的自动配置
+
+```java
+@SpringBootApplication
+@EnableRedisHttpSession(maxInactiveIntervalInSeconds= 1800) //开启redis session支持,并配置session过期时间
+public class SpringBootSessionApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(SpringBootSessionApplication.class, args);
+    }
+
+}
+```
+
+
+
+## 三、验证分布式session
+
+#### 3.1 创建测试controller和测试页面
+
+```java
+@Controller
+public class LoginController {
+
+    @RequestMapping
+    public String index() {
+        return "index";
+    }
+
+    @RequestMapping("home")
+    public String home() {
+        return "home";
+    }
+
+    @PostMapping("login")
+    public String login(User user, HttpSession session) {
+        // 随机生成用户id
+        user.setUserId(Math.round(Math.floor(Math.random() * 10 * 1000)));
+        // 将用户信息保存到id中
+        session.setAttribute("USER", user);
+        return "home";
+    }
+
+}
+```
+
+登录页面index.ftl：
+
+```jsp
+<!doctype html>
+<html lang="en">
+<head>
+    <title>登录页面</title>
+</head>
+<body>
+    <form action="/login" method="post">
+        用户：<input type="text" name="username"><br/>
+        密码：<input type="password" name="password"><br/>
+        <button type="submit">登录</button>
+    </form>
+</body>
+</html>
+```
+
+session 信息展示页面home.ftl：
+
+```jsp
+<!doctype html>
+<html lang="en">
+<head>
+    <title>主页面</title>
+</head>
+<body>
+    <h5>登录用户: ${Session["USER"].username} </h5>
+    <h5>用户编号: ${Session["USER"].userId} </h5>
+</body>
+</html>
+```
+
+#### 3.2 启动项目
+
+由于我们这里采用的是spring boot 的内置容器作为web容器，所以直接启动两个实例测试即可。
+
+应用1启动配置：
+
+![spring-session-tomcat01](D:\spring-samples-for-all\pictures\spring-boot-session-app1.png)
+
+应用2启动配置，需要用 `--server.port `指定不同的端口号：
+
+![spring-session-tomcat02](D:\spring-samples-for-all\pictures\spring-boot-session-app2.png)
+
+**测试结果：**
+
+![spring-session-8080](D:\spring-samples-for-all\pictures\spring-boot-session-8080.png)
+
+![spring-session-8090](D:\spring-samples-for-all\pictures\spring-boot-session-8090.png)
--- a/solution/spring-boot-session/pom.xml
+++ b/solution/spring-boot-session/pom.xml
@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.1.2.RELEASE</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+    <groupId>com.heibaiying</groupId>
+    <artifactId>spring-boot-session</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>spring-boot-session</name>
+    <description>spring session project for Spring Boot</description>
+
+    <properties>
+        <java.version>1.8</java.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-redis</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-freemarker</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.session</groupId>
+            <artifactId>spring-session-data-redis</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <optional>true</optional>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>
--- a/solution/spring-boot-session/src/main/java/com/heibaiying/springboot/SpringBootSessionApplication.java
+++ b/solution/spring-boot-session/src/main/java/com/heibaiying/springboot/SpringBootSessionApplication.java
@ -0,0 +1,16 @@
+package com.heibaiying.springboot;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.session.data.redis.config.annotation.web.http.EnableRedisHttpSession;
+
+@SpringBootApplication
+@EnableRedisHttpSession(maxInactiveIntervalInSeconds= 1800) //开启redis session支持,并配置session过期时间
+public class SpringBootSessionApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(SpringBootSessionApplication.class, args);
+    }
+
+}
+
--- a/solution/spring-boot-session/src/main/java/com/heibaiying/springboot/bean/User.java
+++ b/solution/spring-boot-session/src/main/java/com/heibaiying/springboot/bean/User.java
@ -0,0 +1,17 @@
+package com.heibaiying.springboot.bean;
+
+import lombok.Data;
+
+import java.io.Serializable;
+
+/**
+ * @author : heibaiying
+ */
+@Data
+public class User implements Serializable {
+
+    private long userId;
+    private String username;
+    private String password;
+
+}
--- a/solution/spring-boot-session/src/main/java/com/heibaiying/springboot/controller/LoginController.java
+++ b/solution/spring-boot-session/src/main/java/com/heibaiying/springboot/controller/LoginController.java
@ -0,0 +1,37 @@
+package com.heibaiying.springboot.controller;
+
+
+import com.heibaiying.springboot.bean.User;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import javax.servlet.http.HttpSession;
+
+/**
+ * @author : heibaiying
+ * @description : 登录
+ */
+@Controller
+public class LoginController {
+
+    @RequestMapping
+    public String index() {
+        return "index";
+    }
+
+    @RequestMapping("home")
+    public String home() {
+        return "home";
+    }
+
+    @PostMapping("login")
+    public String login(User user, HttpSession session) {
+        // 随机生成用户id
+        user.setUserId(Math.round(Math.floor(Math.random() * 10 * 1000)));
+        // 将用户信息保存到id中
+        session.setAttribute("USER", user);
+        return "home";
+    }
+
+}
--- a/solution/spring-boot-session/src/main/resources/application.yml
+++ b/solution/spring-boot-session/src/main/resources/application.yml
@ -0,0 +1,21 @@
+spring:
+  redis:
+    host: 127.0.0.1
+    port: 6379
+    jedis:
+      pool:
+        # 连接池最大连接数,使用负值表示无限制。
+        max-active: 8
+        # 连接池最大阻塞等待时间,使用负值表示无限制。
+        max-wait: -1s
+        # 连接池最大空闲数,使用负值表示无限制。
+        max-idle: 8
+        # 连接池最小空闲连接，只有设置为正值时候才有效
+        min-idle: 1
+    timeout: 300ms
+  session:
+    # session 存储方式 支持redis、mongo、jdbc、hazelcast
+    store-type: redis
+
+# 如果是集群节点 采用如下配置指定节点
+#spring.redis.cluster.nodes
--- a/solution/spring-boot-session/src/main/resources/templates/home.ftl
+++ b/solution/spring-boot-session/src/main/resources/templates/home.ftl
@ -0,0 +1,10 @@
+<!doctype html>
+<html lang="en">
+<head>
+    <title>主页面</title>
+</head>
+<body>
+    <h5>登录用户: ${Session["USER"].username} </h5>
+    <h5>用户编号: ${Session["USER"].userId} </h5>
+</body>
+</html>
--- a/solution/spring-boot-session/src/main/resources/templates/index.ftl
+++ b/solution/spring-boot-session/src/main/resources/templates/index.ftl
@ -0,0 +1,13 @@
+<!doctype html>
+<html lang="en">
+<head>
+    <title>登录页面</title>
+</head>
+<body>
+    <form action="/login" method="post">
+        用户：<input type="text" name="username"><br/>
+        密码：<input type="password" name="password"><br/>
+        <button type="submit">登录</button>
+    </form>
+</body>
+</html>
--- a/solution/spring-boot-session/src/test/java/com/heibaiying/springboot/SpringBootSessionApplicationTests.java
+++ b/solution/spring-boot-session/src/test/java/com/heibaiying/springboot/SpringBootSessionApplicationTests.java
@ -0,0 +1,17 @@
+package com.heibaiying.springboot;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class SpringBootSessionApplicationTests {
+
+    @Test
+    public void contextLoads() {
+    }
+
+}
+
--- a/solution/spring-session/README.md
+++ b/solution/spring-session/README.md
@ -0,0 +1,189 @@
+# spring session 实现分布式 session
+
+## 一、项目结构
+
+分布式session 主要配置文件为spring-session.xml和web.xml，其他的配置为标准的web工程的配置。
+
+![spring-cloud-eureka](D:\spring-samples-for-all\pictures\spring-session.png)
+
+## 二、分布式session的配置
+
+#### 2.1 引入依赖
+
+```xml
+<!--分布式 session 相关依赖-->
+<dependency>
+    <groupId>org.springframework.data</groupId>
+    <artifactId>spring-data-redis</artifactId>
+    <version>2.1.3.RELEASE</version>
+</dependency>
+<dependency>
+    <groupId>redis.clients</groupId>
+    <artifactId>jedis</artifactId>
+    <version>2.9.0</version>
+</dependency>
+<dependency>
+    <groupId>org.springframework.session</groupId>
+    <artifactId>spring-session-data-redis</artifactId>
+    <version>2.1.3.RELEASE</version>
+</dependency>
+```
+
+#### 2.2 在web.xml中配置session拦截器
+
+```xml
+<!--配置http session-->
+<filter>
+    <filter-name>springSessionRepositoryFilter</filter-name>
+    <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
+</filter>
+<filter-mapping>
+    <filter-name>springSessionRepositoryFilter</filter-name>
+    <url-pattern>/*</url-pattern>
+</filter-mapping>
+
+```
+
+#### 2.3 创建配置文件spring- session.xml，配置redis连接
+
+有两点需要特别说明：
+
+1. spring-session 不仅提供了redis作为公共session存储的方案，同时也支持jdbc、mongodb、Hazelcast等作为公共session的存储；
+2. 对于redis 存储方案而言，官方也提供了不止一种整合方式，这里我们选取的整合方案是jedis客户端作为连接，当然也可以使用Lettuce作为客户端连接。
+
+```xml
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
+       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
+        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd">
+
+    <context:property-placeholder location="classpath:redis.properties"/>
+
+
+    <!--配置 http session-->
+    <bean id="redisHttpSessionConfiguration"
+          class="org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration">
+        <!--session 有效期 单位秒 每次访问都会刷新有效期-->
+        <property name="maxInactiveIntervalInSeconds" value="1800"/>
+    </bean>
+
+    <!--单机版本配置redis 配置-->
+    <bean id="redisStandaloneConfiguration"
+          class="org.springframework.data.redis.connection.RedisStandaloneConfiguration">
+        <constructor-arg name="hostName" value="${redis.host}"/>
+        <constructor-arg name="port" value="${redis.port}"/>
+    </bean>
+
+
+    <bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory"
+          p:usePool="true">
+        <!--单机版本配置-->
+        <constructor-arg name="standaloneConfig" ref="redisStandaloneConfiguration"/>
+        <!--集群配置-->
+        <!--<constructor-arg name="clusterConfig" ref="redisClusterConfiguration"/>-->
+    </bean>
+
+
+    <!--集群配置-->
+    <!--<bean id="redisClusterConfiguration" class="org.springframework.data.redis.connection.RedisClusterConfiguration">
+        <property name="maxRedirects" value="3"/>
+        <constructor-arg>
+            <set>
+                <value>127.0.0.1:6379</value>
+                <value>127.0.0.1:6380</value>
+                <value>127.0.0.1:6381</value>
+            </set>
+        </constructor-arg>
+    </bean>-->
+
+
+    <bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate"
+          p:connection-factory-ref="jedisConnectionFactory"/>
+
+</beans>
+```
+
+## 三、验证分布式session
+
+#### 3.1 创建测试controller和测试页面
+
+```java
+@Controller
+public class LoginController {
+
+    @RequestMapping
+    public String index(){
+        return "index";
+    }
+
+    @RequestMapping("home")
+    public String home(){
+        return "home";
+    }
+
+    @PostMapping("login")
+    public String login(User user, HttpSession session, HttpServletRequest request, Model model){
+        // 随机生成用户id
+        user.setUserId(Math.round(Math.floor(Math.random() *10*1000)));
+        // 将用户信息保存到id中
+        session.setAttribute("USER",user);
+        return "redirect:home";
+    }
+
+}
+```
+
+登录页面：
+
+```jsp
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<html>
+<head>
+    <title>登录页面</title>
+</head>
+<body>
+<h5>服务器:<%=request.getServerName()+":"+request.getServerPort()%></h5>
+<form action="${pageContext.request.contextPath}/login" method="post">
+     用户：<input type="text" name="username"><br/>
+     密码：<input type="password" name="password"><br/>
+    <button type="submit">登录</button>
+</form>
+</body>
+</html>
+```
+
+session 信息展示页面(home.jsp)：
+
+```jsp
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<html>
+<head>
+    <title>主页面</title>
+</head>
+<body>
+    <h5>服务器:<%=request.getServerName()+":"+request.getServerPort()%></h5>
+    <h5>登录用户: ${sessionScope.USER.username} </h5>
+    <h5>用户编号: ${sessionScope.USER.userId} </h5>
+</body>
+</html>
+```
+
+#### 3.2 启动项目
+
+这里我们采用两个tomcat分别启动项目，在第一个项目index.jsp页面进行登录，第二个项目不登录，直接访问session展示页（home.jsp）
+
+tomcat 1 配置：
+
+![spring-session-tomcat01](D:\spring-samples-for-all\pictures\spring-session-tomcat01.png)
+
+tomcat 2 配置：
+
+![spring-session-tomcat02](D:\spring-samples-for-all\pictures\spring-session-tomcat02.png)
+
+**测试结果：**
+
+![spring-session-8080](D:\spring-samples-for-all\pictures\spring-session-8080.png)
+
+![spring-session-8090](D:\spring-samples-for-all\pictures\spring-session-8090.png)
--- a/solution/spring-session/pom.xml
+++ b/solution/spring-session/pom.xml
@ -0,0 +1,82 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>com.heibaiying</groupId>
+    <artifactId>spring-session</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>8</source>
+                    <target>8</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+    <properties>
+        <spring-base-version>5.1.3.RELEASE</spring-base-version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+            <version>${spring-base-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-beans</artifactId>
+            <version>${spring-base-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-core</artifactId>
+            <version>${spring-base-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-web</artifactId>
+            <version>${spring-base-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-webmvc</artifactId>
+            <version>${spring-base-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>javax.servlet</groupId>
+            <artifactId>javax.servlet-api</artifactId>
+            <version>4.0.1</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>1.18.0</version>
+        </dependency>
+        <!--分布式 session 相关依赖-->
+        <dependency>
+            <groupId>org.springframework.data</groupId>
+            <artifactId>spring-data-redis</artifactId>
+            <version>2.1.3.RELEASE</version>
+        </dependency>
+        <dependency>
+            <groupId>redis.clients</groupId>
+            <artifactId>jedis</artifactId>
+            <version>2.9.0</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.session</groupId>
+            <artifactId>spring-session-data-redis</artifactId>
+            <version>2.1.3.RELEASE</version>
+        </dependency>
+    </dependencies>
+
+</project>
--- a/solution/spring-session/src/main/java/com/heibaiying/bean/User.java
+++ b/solution/spring-session/src/main/java/com/heibaiying/bean/User.java
@ -0,0 +1,17 @@
+package com.heibaiying.bean;
+
+import lombok.Data;
+
+import java.io.Serializable;
+
+/**
+ * @author : heibaiying
+ */
+@Data
+public class User implements Serializable {
+
+    private long userId;
+    private String username;
+    private String password;
+
+}
--- a/solution/spring-session/src/main/java/com/heibaiying/controller/LoginController.java
+++ b/solution/spring-session/src/main/java/com/heibaiying/controller/LoginController.java
@ -0,0 +1,38 @@
+package com.heibaiying.controller;
+
+import com.heibaiying.bean.User;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpSession;
+
+/**
+ * @author : heibaiying
+ * @description : 登录
+ */
+@Controller
+public class LoginController {
+
+    @RequestMapping
+    public String index(){
+        return "index";
+    }
+
+    @RequestMapping("home")
+    public String home(){
+        return "home";
+    }
+
+    @PostMapping("login")
+    public String login(User user, HttpSession session, HttpServletRequest request, Model model){
+        // 随机生成用户id
+        user.setUserId(Math.round(Math.floor(Math.random() *10*1000)));
+        // 将用户信息保存到id中
+        session.setAttribute("USER",user);
+        return "redirect:home";
+    }
+
+}
--- a/solution/spring-session/src/main/resources/redis.properties
+++ b/solution/spring-session/src/main/resources/redis.properties
@ -0,0 +1,8 @@
+redis.host=127.0.0.1
+redis.port=6379
+# 连接超时时间
+redis.timeout=2000
+# 最大空闲连接数
+redis.maxIdle=8
+# 最大连接数
+redis.maxTotal=16
--- a/solution/spring-session/src/main/resources/spring-session.xml
+++ b/solution/spring-session/src/main/resources/spring-session.xml
@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
+       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
+        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd">
+
+    <context:property-placeholder location="classpath:redis.properties"/>
+
+
+    <!--配置 http session-->
+    <bean id="redisHttpSessionConfiguration"
+          class="org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration">
+        <!--session 有效期 单位秒 每次访问都会刷新有效期-->
+        <property name="maxInactiveIntervalInSeconds" value="1800"/>
+    </bean>
+
+    <!--单机版本配置redis 配置-->
+    <bean id="redisStandaloneConfiguration"
+          class="org.springframework.data.redis.connection.RedisStandaloneConfiguration">
+        <constructor-arg name="hostName" value="${redis.host}"/>
+        <constructor-arg name="port" value="${redis.port}"/>
+    </bean>
+
+
+    <bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory"
+          p:usePool="true">
+        <!--单机版本配置-->
+        <constructor-arg name="standaloneConfig" ref="redisStandaloneConfiguration"/>
+        <!--集群配置-->
+        <!--<constructor-arg name="clusterConfig" ref="redisClusterConfiguration"/>-->
+    </bean>
+
+
+    <!--集群配置-->
+    <!--<bean id="redisClusterConfiguration" class="org.springframework.data.redis.connection.RedisClusterConfiguration">
+        <property name="maxRedirects" value="3"/>
+        <constructor-arg>
+            <set>
+                <value>127.0.0.1:6379</value>
+                <value>127.0.0.1:6380</value>
+                <value>127.0.0.1:6381</value>
+            </set>
+        </constructor-arg>
+    </bean>-->
+
+
+    <bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate"
+          p:connection-factory-ref="jedisConnectionFactory"/>
+
+</beans>
--- a/solution/spring-session/src/main/resources/springApplication.xml
+++ b/solution/spring-session/src/main/resources/springApplication.xml
@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xmlns:context="http://www.springframework.org/schema/context"
+       xmlns:mvc="http://www.springframework.org/schema/mvc"
+       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
+        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd
+        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd">
+
+    <!-- 开启注解包扫描-->
+    <context:component-scan base-package="com.heibaiying.*"/>
+
+    <!--使用默认的Servlet来响应静态文件-->
+    <mvc:default-servlet-handler/>
+
+
+    <mvc:annotation-driven/>
+
+    <!-- 配置视图解析器 -->
+    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"
+          id="internalResourceViewResolver">
+        <!-- 前缀 -->
+        <property name="prefix" value="/WEB-INF/jsp/"/>
+        <!-- 后缀 -->
+        <property name="suffix" value=".jsp"/>
+    </bean>
+
+    <!--导入 spring session 的配置-->
+    <import resource="spring-session.xml"/>
+
+</beans>
--- a/solution/spring-session/src/main/webapp/WEB-INF/jsp/home.jsp
+++ b/solution/spring-session/src/main/webapp/WEB-INF/jsp/home.jsp
@ -0,0 +1,11 @@
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<html>
+<head>
+    <title>主页面</title>
+</head>
+<body>
+    <h5>服务器:<%=request.getServerName()+":"+request.getServerPort()%></h5>
+    <h5>登录用户: ${sessionScope.USER.username} </h5>
+    <h5>用户编号: ${sessionScope.USER.userId} </h5>
+</body>
+</html>
--- a/solution/spring-session/src/main/webapp/WEB-INF/jsp/index.jsp
+++ b/solution/spring-session/src/main/webapp/WEB-INF/jsp/index.jsp
@ -0,0 +1,14 @@
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<html>
+<head>
+    <title>登录页面</title>
+</head>
+<body>
+<h5>服务器:<%=request.getServerName()+":"+request.getServerPort()%></h5>
+<form action="${pageContext.request.contextPath}/login" method="post">
+     用户：<input type="text" name="username"><br/>
+     密码：<input type="password" name="password"><br/>
+    <button type="submit">登录</button>
+</form>
+</body>
+</html>
--- a/solution/spring-session/src/main/webapp/WEB-INF/web.xml
+++ b/solution/spring-session/src/main/webapp/WEB-INF/web.xml
@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
+		 http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
+         version="3.1">
+
+    <!--配置spring前端控制器-->
+    <servlet>
+        <servlet-name>springMvc</servlet-name>
+        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
+        <init-param>
+            <param-name>contextConfigLocation</param-name>
+            <param-value>classpath:springApplication.xml</param-value>
+        </init-param>
+        <load-on-startup>1</load-on-startup>
+    </servlet>
+
+    <servlet-mapping>
+        <servlet-name>springMvc</servlet-name>
+        <url-pattern>/</url-pattern>
+    </servlet-mapping>
+
+
+    <!--配置http session-->
+    <filter>
+        <filter-name>springSessionRepositoryFilter</filter-name>
+        <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
+    </filter>
+    <filter-mapping>
+        <filter-name>springSessionRepositoryFilter</filter-name>
+        <url-pattern>/*</url-pattern>
+    </filter-mapping>
+
+
+    <!--防止中文-->
+    <filter>
+        <filter-name>characterEncodingFilter</filter-name>
+        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
+        <init-param>
+            <param-name>encoding</param-name>
+            <param-value>UTF-8</param-value>
+        </init-param>
+        <init-param>
+            <param-name>forceEncoding</param-name>
+            <param-value>true</param-value>
+        </init-param>
+    </filter>
+    <filter-mapping>
+        <filter-name>characterEncodingFilter</filter-name>
+        <url-pattern>/*</url-pattern>
+    </filter-mapping>
+
+</web-app>
--- a/pictures/eureka-application.png
+++ b/pictures/eureka-application.png
--- a/pictures/eureka-server-client.png
+++ b/pictures/eureka-server-client.png
--- a/pictures/spring-boot-session-8080.png
+++ b/pictures/spring-boot-session-8080.png
--- a/pictures/spring-boot-session-8090.png
+++ b/pictures/spring-boot-session-8090.png
--- a/pictures/spring-boot-session-app1.png
+++ b/pictures/spring-boot-session-app1.png
--- a/pictures/spring-boot-session-app2.png
+++ b/pictures/spring-boot-session-app2.png
--- a/pictures/spring-boot-session.png
+++ b/pictures/spring-boot-session.png
--- a/pictures/spring-cloud-eureka-cluster.png
+++ b/pictures/spring-cloud-eureka-cluster.png
--- a/pictures/spring-cloud-eureka.png
+++ b/pictures/spring-cloud-eureka.png
--- a/pictures/spring-session-8080.png
+++ b/pictures/spring-session-8080.png
--- a/pictures/spring-session-8090.png
+++ b/pictures/spring-session-8090.png
--- a/pictures/spring-session-tomcat01.png
+++ b/pictures/spring-session-tomcat01.png
--- a/pictures/spring-session-tomcat02.png
+++ b/pictures/spring-session-tomcat02.png
--- a/pictures/spring-session.png
+++ b/pictures/spring-session.png
--- a/spring-cloud/spring-cloud-eureka-cluster/README.md
+++ b/spring-cloud/spring-cloud-eureka-cluster/README.md
@ -1,3 +1,194 @@
-2019-01-11 11:16:14.320  INFO 13496 --- [nio-8010-exec-4] c.n.e.registry.AbstractInstanceRegistry  : Registered instance SERVER/DESKTOP-8JGSFLJ:server:8010 with status UP (replication=true)
-2019-01-11 11:16:15.084  INFO 13496 --- [      Thread-41] c.n.e.registry.AbstractInstanceRegistry  : Registered instance SERVER/DESKTOP-8JGSFLJ:server:8020 with status UP (replication=true)
-2019-01-11 11:16:15.085  INFO 13496 --- [      Thread-41] c.n.e.registry.AbstractInstanceRegistry  : Registered instance SERVER/DESKTOP-8JGSFLJ:server:8030 with status UP (replication=true)
+# eureka 高可用注册中心的搭建
+
+## 一、项目结构
+
+eureka-server为服务注册中心，负责服务的管理；
+
+eureka-client 为eureka客户端；
+
+![spring-cloud-eureka](D:\spring-samples-for-all\pictures\spring-cloud-eureka-cluster.png)
+
+
+
+## 二、三步搭建eureka 高可用注册中心
+
+这里我们以单机伪集群的方式搭建，让三个单机注册中心互相注册，实现注册中心的高可用。配置示意图如下：
+
+![eureka-server-client](D:\spring-samples-for-all\pictures\eureka-server-client.png)
+
+#### 2.1 引入eureka服务端依赖
+
+```xml
+<dependency>
+    <groupId>org.springframework.cloud</groupId>
+    <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
+</dependency>
+```
+
+#### 2.2  创建三份配置文件，分别代表不同注册中心的配置
+
+![eureka-application](D:\spring-samples-for-all\pictures\eureka-application.png)
+
+application-01.yml:
+
+```yaml
+spring:
+  application:
+    name: server
+server:
+  port: 8010
+eureka:
+  server:
+    # 关闭自我保护机制 开发的时候可以开启 保证不可用的服务能够及时剔除
+    enable-self-preservation: false
+  instance:
+    hostname: 127.0.0.1
+  client:
+    serviceUrl:
+          defaultZone: http://localhost:8020/eureka/,http://192.168.200.228:8030/eureka/
+```
+
+application-02.yml
+
+```yaml
+spring:
+  application:
+    name: server
+server:
+  port: 8020
+eureka:
+  server:
+    # 关闭自我保护机制 开发的时候可以开启 保证不可用的服务能够及时剔除
+    enable-self-preservation: false
+  instance:
+    hostname: localhost
+  client:
+    serviceUrl:
+          defaultZone: http://127.0.0.1:8010/eureka/,http://192.168.200.228:8030/eureka/
+```
+
+application-03.yml
+
+```yaml
+spring:
+  application:
+    name: server
+server:
+  port: 8030
+eureka:
+  server:
+    # 关闭自我保护机制 开发的时候可以开启 保证不可用的服务能够及时从列表中剔除
+    enable-self-preservation: false
+  instance:
+    hostname: 192.168.200.228
+  client:
+    serviceUrl:
+          defaultZone: http://127.0.0.1:8010/eureka/,http://localhost:8020/eureka/
+```
+
+需要注意的是Eureka互相注册要求各个Eureka实例的eureka.instance.hostname不同，如果相同，则会被Eureka标记为unavailable-replicas（不可用副本）。
+
+#### 2.3 启动类上增加注解@EnableEurekaServer激活eureka服务端自动配置
+
+```java
+@SpringBootApplication
+@EnableEurekaServer
+public class EurekaServerApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(EurekaServerApplication.class, args);
+    }
+
+}
+```
+
+
+
+## 三、三步搭建eureka 客户端
+
+#### 3.1 引入eureka客户端依赖
+
+```xml
+<dependency>
+    <groupId>org.springframework.cloud</groupId>
+    <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
+</dependency>
+```
+
+#### 3.2 eureka 客户端配置,指定注册中心地址
+
+```yaml
+server:
+  port: 8040
+# 指定服务命名
+spring:
+  application:
+    name: eureka-client
+# 指定注册中心地址
+eureka:
+  client:
+    serviceUrl:
+      defaultZone: http://127.0.0.1:8010/eureka/,http://localhost:8020/eureka/,http://192.168.200.228:8030/eureka/
+```
+
+#### 3.3 启动类上增加注解@EnableDiscoveryClient激活eureka客户端自动配置
+
+```java
+@SpringBootApplication
+@EnableDiscoveryClient
+public class EurekaClientApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(EurekaClientApplication.class, args);
+    }
+
+}
+```
+
+## 4.启动项目 
+
+### 4.1 这里我们可以采用命令行方式指定配置，分别启动三个注册中心
+
+![eureka-active](D:\spring-samples-for-all\pictures\eureka-active.png)
+
+### 4.2  高可用集群搭建成功的判定
+
+这里需要主要的是仅仅status中出现其他注册中心时，并不一定是搭建成功的，**一定是当注册中心的DS Replicas 和 available replicas中显示其余的注册中心时候**，才代表搭建成功。
+
+#### **4.2.1  点击下面注册中心的可用实例列表中的地址，访问链接分以下几个情况：**
+
+1. hostname和prefer-ip-address都没有配置，则访问 主机名:服务名:端口号，
+
+```
+ 如：http://desktop-8jgsflj:8761/info
+```
+
+2. 配置了hostname而没有配置prefer-ip-address，则访问 hostname:服务名:端口号，
+
+     如：http://server:8761/info
+
+3. 如果配置了prefer-ip-address，则访问 ipAddress:服务名:端口号，
+
+     如：http://192.168.200.228:8761/info
+
+8010 注册中心：
+
+![eureka-8010](D:\spring-samples-for-all\pictures\eureka-8010.png)
+
+8020 注册中心：
+
+![eureka-8020](D:\spring-samples-for-all\pictures\eureka-8020.png)
+
+8030 注册中心：
+
+![eureka-8030](D:\spring-samples-for-all\pictures\eureka-8030.png)
+
+### 4.3  prefer-ip-address 参数说明
+
+在有的配置示例中，配置了prefer-ip-address为true。
+
+```properties
+eureka.instance.prefer-ip-address=true
+```
+
+在多机器独立部署的情况下是没有问题的，配置prefer-ip-address为ture，代表发现服务时候优先按照ip去搜寻，对于多集群而言，可以保证尽快准确搜索到服务。而对于单机部署来说，ip地址都是相同的，这会导致其余注册中心出现在unavailable-replicas(不可用副本)中。所以单机部署时候不建议开启这个参数（默认值为false），多机部署时候可以开启。
--- a/spring-cloud/spring-cloud-eureka/README.md
+++ b/spring-cloud/spring-cloud-eureka/README.md
@ -0,0 +1,98 @@
+# eureka 服务的注册与发现
+
+## 一、项目结构
+
+eureka-server为服务注册中心，负责服务的管理；
+
+eureka-client 为eureka客户端；
+
+![spring-cloud-eureka](D:\spring-samples-for-all\pictures\spring-cloud-eureka.png)
+
+## 二、三步搭建eureka 服务注册中心
+
+#### 2.1 引入eureka服务端依赖
+
+```xml
+<dependency>
+    <groupId>org.springframework.cloud</groupId>
+    <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
+</dependency>
+```
+
+#### 2.2 eureka 服务端配置
+
+```yaml
+server:
+  port: 8010
+eureka:
+  instance:
+    hostname: localhost
+  client:
+    # 设置为false,代表不向注册中心注册自己
+    register-with-eureka: false
+    # 注册中心主要用于维护服务，并不需要检索服务，所以设置为false
+    fetch-registry: false
+    serviceUrl:
+          defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
+```
+
+#### 2.3 启动类上增加注解@EnableEurekaServer激活eureka服务端自动配置
+
+```java
+@SpringBootApplication
+@EnableEurekaServer
+public class EurekaServerApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(EurekaServerApplication.class, args);
+    }
+
+}
+```
+
+## 三、三步搭建eureka 客户端
+
+#### 3.1 引入eureka客户端依赖
+
+```xml
+<dependency>
+    <groupId>org.springframework.cloud</groupId>
+    <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
+</dependency>
+```
+
+#### 3.2 eureka 客户端配置
+
+```yaml
+server:
+  port: 8020
+# 指定服务命名
+spring:
+  application:
+    name: eureka-client
+# 指定注册中心地址
+eureka:
+  client:
+    serviceUrl:
+      defaultZone: http://localhost:8010/eureka/
+```
+
+#### 3.3 启动类上增加注解@EnableDiscoveryClient激活eureka客户端自动配置
+
+```java
+@SpringBootApplication
+@EnableDiscoveryClient
+public class EurekaClientApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(EurekaClientApplication.class, args);
+    }
+
+}
+```
+
+## 4.启动项目 
+
+#### 4.1 进入注册中心控制台，查看服务注册情况
+
+![eureka](D:\spring-samples-for-all\pictures\eureka.png)