SSM整合篇】三. SSM整合+事务+单元测试案例 第一章（共四章）

其他 2020-01-25 17:12:56 阅读次数: 0

Spring+SpringMvc+MyBatis整合+事务+单元测试案例 第一章

github源码（day56-ssm-transaction）https://github.com/1196557363/ideaMavenProject

对一些知识点不懂可以参考 SSM整合篇】一. Spring+SpringMvc+MyBatis简单案例
在这里插入图片描述

1. pom.xml导依赖

<?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>ssm-transaction</groupId>
  <artifactId>day56-ssm-transaction</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>day56-ssm-transaction Maven Webapp</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <properties>
    <!-- Spring版本号 -->
    <spring.version>5.1.5.RELEASE</spring.version>
  </properties>

  <dependencies>

    <!-- 连接池 -->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>1.0.18</version>
    </dependency>

    <!-- Spring相关包 -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>${spring.version}</version>
    </dependency>
	<dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <!-- AOP相关包 -->
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjrt</artifactId>
      <version>1.8.0</version>
    </dependency>
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.8.0</version>
    </dependency>

    <!-- MyBatis相关包 -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.3.0</version>
    </dependency>
    <!-- MySQL相关包 -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.26</version>
    </dependency>

    <!-- Spring集成MyBatis -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.2.3</version>
    </dependency>

    <!-- 日志相关包 -->
    <dependency>
      <groupId>org.apache.logging.log4j</groupId>
      <artifactId>log4j-api</artifactId>
      <version>2.5</version>
    </dependency>

    <dependency>
      <groupId>org.apache.logging.log4j</groupId>
      <artifactId>log4j-core</artifactId>
      <version>2.5</version>
    </dependency>

    <dependency>
      <groupId>org.apache.logging.log4j</groupId>
      <artifactId>log4j-web</artifactId>
      <version>2.5</version>

    </dependency>

    <!--解决Spring使用slf4j输出日志与log4j冲突的问题-->
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>1.7.13</version>
    </dependency>


    <!-- 单元测试相关包 -->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <version>1.18.10</version>
    </dependency>

    <!-- 导入thymeleaf依赖包-->
    <dependency>
      <groupId>org.thymeleaf</groupId>
      <artifactId>thymeleaf</artifactId>
      <version>3.0.11.RELEASE</version>
    </dependency>

    <!-- thymeleaf和Spring整合的依赖-->
    <dependency>
      <groupId>org.thymeleaf</groupId>
      <artifactId>thymeleaf-spring5</artifactId>
      <version>3.0.11.RELEASE</version>
    </dependency>

  </dependencies>

  <build>
    <finalName>day56-ssm-transaction</finalName>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>

2 创建数据库 day56-ssm-transaction

DROP TABLE IF EXISTS `dept`;
CREATE TABLE `dept` (
  `dept_id` int(11) NOT NULL,
  `dept_name` varchar(14) DEFAULT NULL,
  `dept_addr` varchar(13) DEFAULT NULL,
  PRIMARY KEY (`dept_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

INSERT INTO `dept` VALUES ('1', '高层部门', '深圳');
INSERT INTO `dept` VALUES ('2', '基层部门', '广州');
INSERT INTO `dept` VALUES ('3', '技术部门', '汕尾');
INSERT INTO `dept` VALUES ('4', '销售部门', '汕头');

DROP TABLE IF EXISTS `emp`;
CREATE TABLE `emp` (
  `emp_id` int(4) NOT NULL,
  `emp_name` varchar(10) DEFAULT NULL,
  `job` varchar(11) DEFAULT NULL,
  `super_id` int(4) DEFAULT NULL,
  `dept_no` int(11) DEFAULT NULL,
  PRIMARY KEY (`emp_id`),
  KEY `FK_DEPT_ID` (`dept_no`),
  CONSTRAINT `FK_DEPT_ID` FOREIGN KEY (`dept_no`) REFERENCES `dept` (`dept_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

INSERT INTO `emp` VALUES ('1', 'jieKaMi', '董事长', 0, '1');
INSERT INTO `emp` VALUES ('2', 'wpj', '经理', '1', '1');
INSERT INTO `emp` VALUES ('3', 'czh', '副经理', '2', '1');
INSERT INTO `emp` VALUES ('4', 'yzh', '经理助理', '2', '1');
INSERT INTO `emp` VALUES ('5', 'wcw', '分公司经理', '2', '2');
INSERT INTO `emp` VALUES ('6', 'zcy', '主管', '5', '2');
INSERT INTO `emp` VALUES ('7', 'hcm', '项目负责人', '5', '2');
INSERT INTO `emp` VALUES ('8', 'lgx', '审核', '5', '3');
INSERT INTO `emp` VALUES ('9', 'zmy', '财务', '5', '3');
INSERT INTO `emp` VALUES ('10', 'oysc', '后勤', '5', '4');

3 创建jdbc.properties 和 spring-context.xml

3.1 jdbc.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/day56-ssm-transaction
jdbc.username=root
jdbc.password=123456

3.2 spring-context.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"
       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.xsd">
    
    <!-- 1. 加载jdbc.properties -->
    <context:property-placeholder location="classpath:jdbc.properties" />

    <!-- 2.创建数据源 -->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
        <!--基本属性url，user，password-->
        <property name="driverClassName" value="${jdbc.driver}" />
        <property name="url" value="${jdbc.url}" />
        <property name="username" value="${jdbc.username}" />
        <property name="password" value="${jdbc.password}" />
        <!-- 配合初始化大小， 最大， 最小 -->
        <property name="initialSize" value="5" />
        <property name="minIdle" value="5" />
        <property name="maxActive" value="10" />
        <!-- 配置从连接池获取连接等待超时的时间 -->
        <property name="maxWait" value="10000" />
    </bean>
</beans>

3.3 Test

没错 就是测试 测试dataSource是否配置正确

import org.junit.*;
import org.junit.runner.*;
import org.springframework.beans.factory.annotation.*;
import org.springframework.test.context.*;
import org.springframework.test.context.junit4.*;

import javax.sql.*;

/**
 * ClassName: SSMTest
 * Description:
 *
 * @author JieKaMi
 * @version 1.0
 * @date: 2020\1\8 0008 17:51
 * @since JDK 1.8
 */

@RunWith(value= SpringJUnit4ClassRunner.class)
@ContextConfiguration(value = "classpath:spring-context.xml")
public class SSMTest {

    @Autowired
    private DataSource dataSource;

    @Test
    public void testDataSource(){
        System.out.println(dataSource);
    }
}

在这里插入图片描述

3.3.1 结果

如果报错了 或者为null 就要检查一下前面哪里写错了 再往下面走。
可能出错的地方

  1. 检查jdbc.properties看看有没有写错
  2. spring-context.xml看看 加载jdbc.properties有没有加载到，DataSource有没有配对。
  3. @ContextConfiguration(value = “classpath:spring-context.xml”) 看看有没有写错有没有写错
    在这里插入图片描述

4. Spring和MyBatis整合

4.1 定义实体类

可以不先创建，但为配置完善是在这里创建。

4.1.1 Dept

package com.wpj.bean;
/**
 * ClassName: Dept
 * Description:
 *      提供无参,全参,getter,setter和toString()
 * @author JieKaMi
 * @version 1.0
 * @date: 2020\1\8 0008 19:04
 * @since JDK 1.8
 */
public class Dept {
    private Integer deptId;
    private String deptName;
    private String deptAddr;
    public Dept() {}
    public Dept(Integer deptId, String deptName, String deptAddr) {
        this.deptId = deptId;
        this.deptName = deptName;
        this.deptAddr = deptAddr;
    }
    public Integer getDeptId() { return deptId; }
    public void setDeptId(Integer deptId) { this.deptId = deptId; }
    public String getDeptName() { return deptName; }
    public void setDeptName(String deptName) { this.deptName = deptName; }
    public String getDeptAddr() { return deptAddr; }
    public void setDeptAddr(String deptAddr) { this.deptAddr = deptAddr; }
    @Override
    public String toString() {
        return "Dept{" +
                "deptId=" + deptId +
                ", deptName='" + deptName + '\'' +
                ", deptAddr='" + deptAddr + '\'' +
                '}';
    }
}

4.1.2 Emp

package com.wpj.bean;

/**
 * ClassName: Emp
 * Description:
 *      提供无参,全参,getter,setter和toString()
 * @author JieKaMi
 * @version 1.0
 * @date: 2020\1\8 0008 19:07
 * @since JDK 1.8
 */
public class Emp {
    private Integer empId;
    private String empName;
    private String job;
    private Integer superId;
    private Integer deptNo;
    public Emp() {}
    public Emp(Integer empId, String empName, String job, Integer superId, Integer deptNo) {
        this.empId = empId;
        this.empName = empName;
        this.job = job;
        this.superId = superId;
        this.deptNo = deptNo;
    }
    public Integer getEmpId() { return empId; }
    public void setEmpId(Integer empId) { this.empId = empId; }
    public String getEmpName() { return empName; }
    public void setEmpName(String empName) { this.empName = empName; }
    public String getJob() { return job; }
    public void setJob(String job) { this.job = job; }
    public Integer getSuperId() { return superId; }
    public void setSuperId(Integer superId) { this.superId = superId; }
    public Integer getDeptNo() { return deptNo; }
    public void setDeptNo(Integer deptNo) { this.deptNo = deptNo; }
    @Override
    public String toString() {
        return "Emp{" +
                "empId=" + empId +
                ", empName='" + empName + '\'' +
                ", job='" + job + '\'' +
                ", superId=" + superId +
                ", deptNo=" + deptNo +
                '}';
    }
}

4.2 定义接口

4.2.1 IDeptDao

package com.wpj.dao;

/**
 * ClassName: IDeptDao
 * Description:
 *
 * @author JieKaMi
 * @version 1.0
 * @date: 2020\1\8 0008 19:12
 * @since JDK 1.8
 */
public interface IDeptDao {

}

4.2.2 IEmpDao

package com.wpj.dao;

/**
 * ClassName: IEmpDao
 * Description:
 *
 * @author JieKaMi
 * @version 1.0
 * @date: 2020\1\8 0008 19:11
 * @since JDK 1.8
 */
public interface IEmpDao {

}

4.3 接口对应映射文件（尽可能跟接口同名）

4.3.1 IDeptDao.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.wpj.dao.IDeptDao">

</mapper>

4.3.2 IEmpDao.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.wpj.dao.IEmpDao">

</mapper>

4.4 在spring-context.xml中配置

<!-- 3. Spring跟MyBatis整合 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
   <!-- 3.1 设置数据源 -->
   <property name="dataSource" ref="dataSource" />
   <!-- 3.2 设置别名 -->
   <property name="typeAliasesPackage" value="com.wpj.bean" />
   <!-- 3.3 -->
   <property name="mapperLocations" value="classpath:mapper/*.xml" />
</bean>

4.5 Test

import org.apache.ibatis.session.*;
import org.junit.*;
import org.junit.runner.*;
import org.springframework.beans.factory.annotation.*;
import org.springframework.test.context.*;
import org.springframework.test.context.junit4.*;

import javax.sql.*;

/**
 * ClassName: SSMTest
 * Description:
 *
 * @author JieKaMi
 * @version 1.0
 * @date: 2020\1\8 0008 17:51
 * @since JDK 1.8
 */

@RunWith(value= SpringJUnit4ClassRunner.class)
@ContextConfiguration(value = "classpath:spring-context.xml")
public class SSMTest {
    @Autowired
    private SqlSessionFactory sqlSessionFactory;
    
    @Test
    public void testSqlSessionFactory(){
        System.out.println(sqlSessionFactory);
    }
}

4.5.1 结果

如果报错了 或者为null 就要检查一下前面哪里写错了 再往下面走。
可能出错的地方

  1. 看看spring-context.xml中 <!-- 3. Spring跟MyBatis整合 –> bean的id和class有没有写错
  2. 看看 <!-- 3.1 设置数据源 –> 和 <!-- 3.3 mapper文件的路径映射 –> 有没有错，特别是 value=“classpath:mapper/*.xml”
  3. 至于<!-- 3.2 设置别名 –>没写sql映射的时候还用不到

在这里插入图片描述

未完待续。。。。
  1. 配置事务【SSM整合篇】三. SSM整合+事务+单元测试案例 第二章（共四章）
杰KaMi
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