spring-samples-for-all/spring/spring-jdbc

spring 整合 jdbc template（xml配置方式）

1、创建标准web maven工程，导入依赖

<?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-jdbc</artifactId>
    <version>1.0-SNAPSHOT</version>
    <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>${spring-base-version}</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>4.0.1</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.4</version>
            <scope>provided</scope>
        </dependency>
        <!--jdbc 相关依赖包-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${spring-base-version}</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.13</version>
        </dependency>
        <!--单元测试相关依赖包-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring-base-version}</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.oracle</groupId>
            <artifactId>ojdbc6</artifactId>
            <version>11.2.0.3.0</version>
        </dependency>
    </dependencies>

</project>

2、在web.xml 进行如下配置

<?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>

</web-app>

3、在resources文件夹下新建数据库配置文件jdbc.properties

# mysql 数据库配置
mysql.driverClassName=com.mysql.jdbc.Driver
mysql.url=jdbc:mysql://localhost:3306/mysql
mysql.username=root
mysql.password=root

# oracle 数据库配置
oracle.driverClassName=oracle.jdbc.driver.OracleDriver
oracle.url=jdbc:oracle:thin:@//IP地址:端口号/数据库实例名
oracle.username=用户名
oracle.password=密码

4、在resources文件夹下创建springApplication.xml 配置文件

<?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:tx="http://www.springframework.org/schema/tx"
       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/tx http://www.springframework.org/schema/tx/spring-tx.xsd">

    <!-- 开启注解包扫描-->
    <context:component-scan base-package="com.heibaiying.*"/>

    <!--指定配置文件的位置-->
    <context:property-placeholder location="classpath:jdbc.properties"/>

    <!--配置数据源-->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <!--Mysql 配置-->
        <property name="driverClassName" value="${mysql.driverClassName}"/>
        <property name="url" value="${mysql.url}"/>
        <property name="username" value="${mysql.username}"/>
        <property name="password" value="${mysql.password}"/>
        <!--Oracle 配置-->
        <!--<property name="driverClassName" value="${oracle.driverClassName}"/>
        <property name="url" value="${oracle.url}"/>
        <property name="username" value="${oracle.username}"/>
        <property name="password" value="${oracle.password}"/>-->
    </bean>

    <!--配置 jdbcTemplate -->
    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        <!--引用上面的数据源-->
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!--定义事务管理器-->
    <bean id="transactionManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!-- 开启事务注解@Transactional支持 -->
    <tx:annotation-driven/>

</beans>

5、新建查询接口及其实现类,这里我查询的表是mysql和oracle中的字典表

public interface MysqlDao {

    List<Relation> get();
}

package com.heibaiying.dao;

import com.heibaiying.bean.Relation;
import com.heibaiying.dao.impl.MysqlDao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.stereotype.Repository;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;

/**
 * @author : heibaiying
 * @description :
 */

@Repository
public class MysqlDaoImpl implements MysqlDao {

    @Autowired
    private JdbcTemplate jdbcTemplate;

    /**
     * 更多JDBC 的使用可以参考官方文档
     * @see <a href="https://docs.spring.io/spring/docs/5.1.3.RELEASE/spring-framework-reference/data-access.html#jdbc-JdbcTemplate">JdbcTemplate</a>
     */
    public List<Relation> get() {
        List<Relation> relations = jdbcTemplate.query("select * from help_keyword where help_keyword_id = ? ", new Object[]{691},
                new RowMapper<Relation>() {
                    public Relation mapRow(ResultSet rs, int rowNum) throws SQLException {
                        Relation relation = new Relation();
                        relation.setId(rs.getString("help_keyword_id"));
                        relation.setName(rs.getString("name"));
                        return relation;
                    }

                });
        return relations;
    }
}

package com.heibaiying.dao.impl;

import com.heibaiying.bean.Flow;
import java.util.List;

/**
 * @author : heibaiying
 * @description :
 */
public interface OracleDao {

    List<Flow> get();
}

package com.heibaiying.dao;

import com.heibaiying.bean.Flow;
import com.heibaiying.dao.impl.OracleDao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.stereotype.Repository;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;

/**
 * @author : heibaiying
 * @description :
 */

@Repository
public class OracleDaoImpl implements OracleDao {

    @Autowired
    private JdbcTemplate jdbcTemplate;

    /**
     * 更多JDBC 的使用可以参考官方文档
     * @see <a href="https://docs.spring.io/spring/docs/5.1.3.RELEASE/spring-framework-reference/data-access.html#jdbc-JdbcTemplate">JdbcTemplate</a>
     */
    public List<Flow> get() {
        List<Flow> flows = jdbcTemplate.query("select * from APEX_030200.WWV_FLOW_CALS where ID = ? ", new Object[]{217584603977429772L},
                new RowMapper<Flow>() {
                    public Flow mapRow(ResultSet rs, int rowNum) throws SQLException {
                        Flow flow = new Flow();
                        flow.setId(rs.getLong("ID"));
                        flow.setFlowId(rs.getLong("FLOW_ID"));
                        flow.setPlugId(rs.getLong("PLUG_ID"));
                        return flow;
                    }

                });
        return flows;
    }
}

6.新建测试类进行测试

package com.heibaiying.dao;

import com.heibaiying.bean.Relation;
import com.heibaiying.dao.impl.MysqlDao;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringRunner;

import java.util.List;

/**
 * @author : heibaiying
 * @description :
 */

@RunWith(SpringRunner.class)
@ContextConfiguration({"classpath:springApplication.xml"})
public class MysqlDaoTest {

    @Autowired
    private MysqlDao mysqlDao;

    @Test
    public void get() {
        List<Relation> relations = mysqlDao.get();
        if (relations != null) {
            for (Relation relation : relations) {
                System.out.println(relation.getId() + " " + relation.getName());
            }
        }
    }
}

package com.heibaiying.dao;

import com.heibaiying.bean.Flow;
import com.heibaiying.dao.impl.OracleDao;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringRunner;

import java.util.List;

/**
 * @author : heibaiying
 * @description :
 */

@RunWith(SpringRunner.class)
@ContextConfiguration({"classpath:springApplication.xml"})
public class OracleDaoTest {

    /*注入接口时: 如果接口有多个实现类 可以用这个注解指定具体的实现类*/
    @Qualifier("oracleDaoImpl")
    @Autowired
    private OracleDao oracleDao;

    @Test
    public void get() {
        List<Flow> flows = oracleDao.get();
        if (flows != null) {
            for (Flow flow : flows) {
                System.out.println(flow.getId() + " " + flow.getPlugId());
            }
        }
    }
}