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增加springmvc 全局异常处理、拦截器示例代码

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This commit is contained in:
罗祥 2018-12-18 17:23:02 +08:00
parent c54d520737
commit c3428d4056
16 changed files with 299 additions and 2 deletions
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1
spring/springmvc-base-annotation/README.md
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@ -1 +0,0 @@
springmvc-base-annotation

24
spring/springmvc-base-annotation/src/main/java/com/heibaiying/config/ServletConfig.java
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@ -1,14 +1,21 @@
package com.heibaiying.config;
import com.heibaiying.exception.NoAuthExceptionResolver;
import com.heibaiying.interceptors.MyFirstInterceptor;
import com.heibaiying.interceptors.MySecondInterceptor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.HandlerExceptionResolver;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
import java.util.List;
/**
* @author : heibaiying
*/
@ -32,8 +39,23 @@ public class ServletConfig implements WebMvcConfigurer {
/**
* 配置静态资源处理器
*/
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
configurer.enable();
}
/**
* 添加自定义拦截器
*/
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(new MyFirstInterceptor()).addPathPatterns("/mvc/**").excludePathPatterns("mvc/login");
registry.addInterceptor(new MySecondInterceptor()).addPathPatterns("/mvc/**");
}
/**
* 添加全局异常处理器
*/
public void configureHandlerExceptionResolvers(List<HandlerExceptionResolver> resolvers) {
resolvers.add(new NoAuthExceptionResolver());
}
}

7
spring/springmvc-base-annotation/src/main/java/com/heibaiying/controller/HelloController.java
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@ -1,5 +1,6 @@
package com.heibaiying.controller;
import com.heibaiying.exception.NoAuthException;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@ -16,4 +17,10 @@ public class HelloController {
private String hello() {
return "hello";
}
@RequestMapping("auth")
private void auth() {
throw new NoAuthException("没有对应的访问权限！");
}
}

25
spring/springmvc-base-annotation/src/main/java/com/heibaiying/exception/NoAuthException.java Normal file
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@ -0,0 +1,25 @@
package com.heibaiying.exception;
/**
* @author : heibaiying
* @description : 自定义无权限异常
*/
public class NoAuthException extends RuntimeException {
public NoAuthException() {
super();
}
public NoAuthException(String message) {
super(message);
}
public NoAuthException(String message, Throwable cause) {
super(message, cause);
}
public NoAuthException(Throwable cause) {
super(cause);
}
}

26
spring/springmvc-base-annotation/src/main/java/com/heibaiying/exception/NoAuthExceptionResolver.java Normal file
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@ -0,0 +1,26 @@
package com.heibaiying.exception;
import org.springframework.web.servlet.HandlerExceptionResolver;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* @author : heibaiying
* @description : 无权限异常处理机制
*/
public class NoAuthExceptionResolver implements HandlerExceptionResolver {
public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) {
if (ex instanceof NoAuthException && !isAjax(request)) {
return new ModelAndView("NoAuthPage");
}
return new ModelAndView();
}
// 判断是否是Ajax请求
private boolean isAjax(HttpServletRequest request) {
return "XMLHttpRequest".equalsIgnoreCase(request.getHeader("X-Requested-With"));
}
}

27
spring/springmvc-base-annotation/src/main/java/com/heibaiying/interceptors/MyFirstInterceptor.java Normal file
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@ -0,0 +1,27 @@
package com.heibaiying.interceptors;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* @author : heibaiying
* @description : spring5 中 preHandle，postHandle，afterCompletion 在接口中被声明为默认方法
*/
public class MyFirstInterceptor implements HandlerInterceptor {
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) {
System.out.println("进入第一个拦截器preHandle");
return true;
}
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) {
System.out.println("进入第一个拦截器postHandle");
}
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) {
System.out.println("进入第一个拦截器afterCompletion");
}
}

27
spring/springmvc-base-annotation/src/main/java/com/heibaiying/interceptors/MySecondInterceptor.java Normal file
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@ -0,0 +1,27 @@
package com.heibaiying.interceptors;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* @author : heibaiying
* @description : spring5 中 preHandle，postHandle，afterCompletion 在接口中被声明为默认方法
*/
public class MySecondInterceptor implements HandlerInterceptor {
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) {
System.out.println("进入第二个拦截器preHandle");
return true;
}
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) {
System.out.println("进入第二个拦截器postHandle");
}
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) {
System.out.println("进入第二个拦截器afterCompletion");
}
}

9
spring/springmvc-base-annotation/src/main/webapp/WEB-INF/jsp/NoAuthPage.jsp Normal file
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@ -0,0 +1,9 @@
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
没有对应的访问权限！
</body>
</html>

16
spring/springmvc-base/pom.xml
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@ -39,6 +39,22 @@
<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>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.54</version>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>27.0.1-jre</version>
</dependency>
</dependencies>
</project>

8
spring/springmvc-base/src/main/java/com/heibaiying/controller/HelloController.java
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@ -1,8 +1,10 @@
package com.heibaiying.controller;
import com.heibaiying.exception.NoAuthException;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
/**
* @author : heibaiying
* @description : hello spring
@ -16,4 +18,10 @@ public class HelloController {
private String hello() {
return "hello";
}
@RequestMapping("auth")
private void auth() {
throw new NoAuthException("没有对应的访问权限！");
}
}

25
spring/springmvc-base/src/main/java/com/heibaiying/exception/NoAuthException.java Normal file
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@ -0,0 +1,25 @@
package com.heibaiying.exception;
/**
* @author : heibaiying
* @description : 自定义无权限异常
*/
public class NoAuthException extends RuntimeException {
public NoAuthException() {
super();
}
public NoAuthException(String message) {
super(message);
}
public NoAuthException(String message, Throwable cause) {
super(message, cause);
}
public NoAuthException(Throwable cause) {
super(cause);
}
}

26
spring/springmvc-base/src/main/java/com/heibaiying/exception/NoAuthExceptionResolver.java Normal file
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@ -0,0 +1,26 @@
package com.heibaiying.exception;
import org.springframework.web.servlet.HandlerExceptionResolver;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* @author : heibaiying
* @description : 无权限异常处理机制
*/
public class NoAuthExceptionResolver implements HandlerExceptionResolver {
public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) {
if (ex instanceof NoAuthException && !isAjax(request)) {
return new ModelAndView("NoAuthPage");
}
return new ModelAndView();
}
// 判断是否是Ajax请求
private boolean isAjax(HttpServletRequest request) {
return "XMLHttpRequest".equalsIgnoreCase(request.getHeader("X-Requested-With"));
}
}

27
spring/springmvc-base/src/main/java/com/heibaiying/interceptors/MyFirstInterceptor.java Normal file
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@ -0,0 +1,27 @@
package com.heibaiying.interceptors;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* @author : heibaiying
* @description : spring5 中 preHandle，postHandle，afterCompletion 在接口中被声明为默认方法
*/
public class MyFirstInterceptor implements HandlerInterceptor {
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) {
System.out.println("进入第一个拦截器preHandle");
return true;
}
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) {
System.out.println("进入第一个拦截器postHandle");
}
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) {
System.out.println("进入第一个拦截器afterCompletion");
}
}

27
spring/springmvc-base/src/main/java/com/heibaiying/interceptors/MySecondInterceptor.java Normal file
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@ -0,0 +1,27 @@
package com.heibaiying.interceptors;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* @author : heibaiying
* @description : spring5 中 preHandle，postHandle，afterCompletion 在接口中被声明为默认方法
*/
public class MySecondInterceptor implements HandlerInterceptor {
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) {
System.out.println("进入第二个拦截器preHandle");
return true;
}
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) {
System.out.println("进入第二个拦截器postHandle");
}
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) {
System.out.println("进入第二个拦截器afterCompletion");
}
}

17
spring/springmvc-base/src/main/resources/springApplication.xml
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@ -24,4 +24,21 @@
<!-- 后缀 -->
<property name="suffix" value=".jsp"/>
</bean>
<!--配置拦截器-->
<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/mvc/**"/>
<mvc:exclude-mapping path="/mvc/login"/>
<bean class="com.heibaiying.interceptors.MyFirstInterceptor"/>
</mvc:interceptor>
<mvc:interceptor>
<mvc:mapping path="/mvc/**"/>
<bean class="com.heibaiying.interceptors.MySecondInterceptor"/>
</mvc:interceptor>
</mvc:interceptors>
<!--配置全局异常处理器-->
<bean class="com.heibaiying.exception.NoAuthExceptionResolver"/>
</beans>

9
spring/springmvc-base/src/main/webapp/WEB-INF/jsp/NoAuthPage.jsp Normal file
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@ -0,0 +1,9 @@
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
没有对应的访问权限！
</body>
</html>