本教程采用的是对单元测试的dao层、service层、control层进行单元测试
其中采用的测试框架可以是junit，也可以是testNG
对应dao层的测试采用的框架是TestNg+dbunit+spring-test-dbunit框架
对应的service层的测试采用的框架是powermock+dbunit+spring-test框架
对应的control层采用的测试框架是mockmvc+dbunit+spring-test框架
项目采用的是maven进行管理：其中数据库使用的是mysql
对应的数据库文件如下：
对于的sql文件内容如下：
ssm_crud.sql
/*
Navicat MySQL Data Transfer
Source Server : 本地电脑2
Source Server Version : 50527
Source Host : localhost:3306
Source Database : ssm_crud
Target Server Type : MYSQL
Target Server Version : 50527
File Encoding : 65001
Date: 2018-07-06 16:56:08
*/
SET FOREIGN_KEY_CHECKS=0;
-- ----------------------------
-- Table structure for `tbl_dept`
-- ----------------------------
DROP TABLE IF EXISTS `tbl_dept`;
CREATE TABLE `tbl_dept` (
`dept_id` int(1) NOT NULL AUTO_INCREMENT,
`dept_name` varchar(255) DEFAULT NULL,
PRIMARY KEY (`dept_id`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8;
-- ----------------------------
-- Records of tbl_dept
-- ----------------------------
INSERT INTO `tbl_dept` VALUES ('1', '研发部');
INSERT INTO `tbl_dept` VALUES ('2', '测试部');
-- ----------------------------
-- Table structure for `tbl_emp`
-- ----------------------------
DROP TABLE IF EXISTS `tbl_emp`;
CREATE TABLE `tbl_emp` (
`emp_id` int(11) NOT NULL AUTO_INCREMENT,
`emp_name` varchar(255) DEFAULT NULL,
`gender` varchar(1) DEFAULT NULL,
`email` varchar(255) DEFAULT NULL,
`d_id` int(11) NOT NULL,
PRIMARY KEY (`emp_id`),
KEY `d-Id` (`d_id`),
CONSTRAINT `d-Id` FOREIGN KEY (`d_id`) REFERENCES `tbl_dept` (`dept_id`)
) ENGINE=InnoDB AUTO_INCREMENT=7889 DEFAULT CHARSET=utf8;
-- ----------------------------
-- Records of tbl_emp
-- ----------------------------
INSERT INTO `tbl_emp` VALUES ('10', 'admin10', 'M', '1878899@qq.com', '1');
INSERT INTO `tbl_emp` VALUES ('12', 'weqwe', 'M', 'wssfesfdfd', '2');
INSERT INTO `tbl_emp` VALUES ('200', 'kebi', null, '899090e@qq.com', '1');
INSERT INTO `tbl_emp` VALUES ('233', '33', '3', '3', '2');
INSERT INTO `tbl_emp` VALUES ('7888', 'kebi', 'M', '899090e@qq.com', '1');
项目对于的工程如下：就是一个maven整合ssm，采用springmvc+spring+mybatis的一个整合，视频可以参考尚硅谷ssm高级整合视频教程
使用到的整合的配置文件如下所示：
我们来看下具体的每个配置文件，因为使用的maven管理，在pom文件中对jar包进行依赖管理
<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.atguigu</groupId>
<artifactId>ssm-crud</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<!--引入项目依赖的jar包 -->
<!-- SpringMVC、Spring -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
<dependencies>
<!--引入pageHelper分页插件 -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>5.0.0</version>
</dependency>
<!-- MBG -->
<!-- https://mvnrepository.com/artifact/org.mybatis.generator/mybatis-generator-core -->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.5</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<!-- 返回json字符串的支持 -->
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.8.8</version>
</dependency>
<!--JSR303数据校验支持；tomcat7及以上的服务器，
tomcat7以下的服务器：el表达式。额外给服务器的lib包中替换新的标准的el
-->
<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-validator -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>5.4.1.Final</version>
</dependency>
<!-- Spring-Jdbc -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<!--Spring-test -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<!-- Spring面向切面编程 -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-aspects -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<!--MyBatis -->
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.2</version>
</dependency>
<!-- MyBatis整合Spring的适配包 -->
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
<!-- 数据库连接池、驱动 -->
<!-- https://mvnrepository.com/artifact/c3p0/c3p0 -->
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.41</version>
</dependency>
<!-- （jstl，servlet-api，junit） -->
<!-- https://mvnrepository.com/artifact/jstl/jstl -->
<dependency>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>jstl-api</artifactId>
<version>1.2</version>
<exclusions>
<exclusion>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
</exclusion>
<exclusion>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
<!-- junit -->
<!-- https://mvnrepository.com/artifact/junit/junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<!-- springmvc测试框架所需用的的包 -->
<dependency>
<groupId>com.jayway.jsonpath</groupId>
<artifactId>json-path-assert</artifactId>
<version>0.8.1</version>
</dependency>
<dependency>
<groupId>com.jayway.jsonpath</groupId>
<artifactId>json-path</artifactId>
<version>0.8.0</version>
</dependency>
<!-- json -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.3</version>
</dependency>
<!-- dbutil测试工具的引入依赖 -->
<dependency>
<groupId>com.github.springtestdbunit</groupId>
<artifactId>spring-test-dbunit</artifactId>
<version>1.2.0</version>
</dependency>
<dependency>
<groupId>org.dbunit</groupId>
<artifactId>dbunit</artifactId>
<version>2.5.0</version>
</dependency>
<dependency>
<groupId>org.testng</groupId>
<artifactId>testng</artifactId>
<version>6.8</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-all</artifactId>
<version>1.10.19 </version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-api-mockito</artifactId>
<version>1.6.5</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-module-testng</artifactId>
<version>1.6.5</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-core</artifactId>
<version>1.6.5</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>
mybatis-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<!-- 开启驼峰命名 -->
<settings>
<setting name="mapUnderscoreToCamelCase" value="true"/>
</settings>
<!-- 给下面com.atguigu.crud.bean启用别名，默认就是类名的第一个字母小写Employee对应的别名就是employee -->
<typeAliases>
<package name="com.atguigu.crud.bean"/>
</typeAliases>
<!-- 需要注意的是分页插件必须放在<typeAliases>的后面 -->
<plugins>
<plugin interceptor="com.github.pagehelper.PageInterceptor">
<!--分页参数合理化 -->
<property name="reasonable" value="true"/>
</plugin>
</plugins>
</configuration>
dispatcher-servlet.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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:task="http://www.springframework.org/schema/task"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
http://www.springframework.org/schema/task
http://www.springframework.org/schema/task/spring-task-3.1.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.1.xsd">
<!-- 配置扫描控制器 ，springmvc值扫描controler，其他的对象都让spring去管理,这里use-default-filters="false"要设置成false-->
<context:component-scan base-package="com.atguigu" use-default-filters="false">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!-- 配置视图解析器 -->
<!-- 配置视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 配置视图解析器的前缀和后缀 -->
<property name="prefix" value="/WEB-INF/views/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<!-- 配置允许访问静态资源文件 -->
<mvc:default-servlet-handler/>
<!-- 支持springmvc的更加高级的东西 -->
<mvc:annotation-driven></mvc:annotation-driven>
</beans>
dbconfig.properties
jdbc.jdbcUrl=jdbc:mysql://localhost:3306/ssm_crud
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.user=root
jdbc.password=123456
applicationContext.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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
<!-- Spring配置文件的核心点（数据源、与mybatis的整合，事务控制） -->
<!-- 配置c3p0数据源 -->
<!-- 引入外部的数据库配置文件 -->
<context:property-placeholder location="classpath:dbconfig.properties"/>
<bean id="pooledDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
<property name="driverClass" value="${jdbc.driverClass}"></property>
<property name="user" value="${jdbc.user}"></property>
<property name="password" value="${jdbc.password}"></property>
</bean>
<!-- 配置spring的IOC，但是不能扫描springmvc的controller，spring 扫描service dao utils的bean
controller由springmvc去扫描 -->
<context:component-scan base-package="com.atguigu">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!--================== 配置和MyBatis的整合=============== -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 指定mybatis全局配置文件的位置 -->
<property name="configLocation" value="classpath:mybatis-config.xml"></property>
<!-- 数据源就是上面配置的c3p0数据源 -->
<property name="dataSource" ref="pooledDataSource"></property>
<!-- 指定mybatis，mapper文件的位置 ，扫描mapper文件夹下面的所有配置文件-->
<property name="mapperLocations" value="classpath:mapper/*.xml"></property>
</bean>
<!-- 配置一个可以执行批量的sqlSession -->
<bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
<constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory"></constructor-arg>
<constructor-arg name="executorType" value="BATCH"></constructor-arg>
</bean>
<!-- 通过自动扫描简化mapper的配置
前面的章节可以看到，我们的dao需要一个一个的配置在配置文件中，
如果有很多个dao的话配置文件就会非常大，这样管理起来就会比较痛苦。
幸好mybatis团队也意识到了这点，
他们利用spring提供的自动扫描功能封装了一个自动扫描dao的工具类，这样我们就可以使用这个功能简化配置： -->
<!-- 配置扫描器，将mybatis接口的实现加入到ioc容器中 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--扫描所有dao接口的实现，加入到ioc容器中 -->
<property name="basePackage" value="com.atguigu.crud.dao"></property>
</bean>
<!-- ===============事务控制的配置 ================-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!--控制住数据源 -->
<property name="dataSource" ref="pooledDataSource"></property>
</bean>
<!--开启基于注解的事务，使用xml配置形式的事务（必要主要的都是使用配置式） -->
<!--配置事务增强，事务如何切入 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<!-- 所有方法都是事务方法 -->
<tx:method name="*"/>
<!--以get开始的所有方法 -->
<tx:method name="get*" read-only="true"/>
</tx:attributes>
</tx:advice>
<!-- 配置哪些类的哪些方法使用事务（配置事务边界，配置Pointcut） -->
<aop:config>
<aop:pointcut id="allManagerMethod" expression="execution(* com.weiyuan.test.service.*.*(..))"/>
<aop:advisor pointcut-ref="allManagerMethod" advice-ref="txAdvice"/>
</aop:config>
<!-- Spring配置文件的核心点（数据源、与mybatis的整合，事务控制） -->
</beans>
mapper下是对应生成的mybatis的映射接口文件
DepartmentMapper.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.atguigu.crud.dao.DepartmentMapper">
<resultMap id="BaseResultMap" type="com.atguigu.crud.bean.Department">
<id column="dept_id" jdbcType="INTEGER" property="deptId" />
<result column="dept_name" jdbcType="VARCHAR" property="deptName" />
</resultMap>
<sql id="Example_Where_Clause">
<where>
<foreach collection="oredCriteria" item="criteria" separator="or">
<if test="criteria.valid">
<trim prefix="(" prefixOverrides="and" suffix=")">
<foreach collection="criteria.criteria" item="criterion">
<choose>
<when test="criterion.noValue">
and ${criterion.condition}
</when>
<when test="criterion.singleValue">
and ${criterion.condition} #{criterion.value}
</when>
<when test="criterion.betweenValue">
and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
</when>
<when test="criterion.listValue">
and ${criterion.condition}
<foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
#{listItem}
</foreach>
</when>
</choose>
</foreach>
</trim>
</if>
</foreach>
</where>
</sql>
<sql id="Update_By_Example_Where_Clause">
<where>
<foreach collection="example.oredCriteria" item="criteria" separator="or">
<if test="criteria.valid">
<trim prefix="(" prefixOverrides="and" suffix=")">
<foreach collection="criteria.criteria" item="criterion">
<choose>
<when test="criterion.noValue">
and ${criterion.condition}
</when>
<when test="criterion.singleValue">
and ${criterion.condition} #{criterion.value}
</when>
<when test="criterion.betweenValue">
and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
</when>
<when test="criterion.listValue">
and ${criterion.condition}
<foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
#{listItem}
</foreach>
</when>
</choose>
</foreach>
</trim>
</if>
</foreach>
</where>
</sql>
<sql id="Base_Column_List">
dept_id, dept_name
</sql>
<select id="selectByExample" parameterType="com.atguigu.crud.bean.DepartmentExample" resultMap="BaseResultMap">
select
<if test="distinct">
distinct
</if>
<include refid="Base_Column_List" />
from tbl_dept
<if test="_parameter != null">
<include refid="Example_Where_Clause" />
</if>
<if test="orderByClause != null">
order by ${orderByClause}
</if>
</select>
<select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap">
select
<include refid="Base_Column_List" />
from tbl_dept
where dept_id = #{deptId,jdbcType=INTEGER}
</select>
<delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
delete from tbl_dept
where dept_id = #{deptId,jdbcType=INTEGER}
</delete>
<delete id="deleteByExample" parameterType="com.atguigu.crud.bean.DepartmentExample">
delete from tbl_dept
<if test="_parameter != null">
<include refid="Example_Where_Clause" />
</if>
</delete>
<insert id="insert" parameterType="com.atguigu.crud.bean.Department">
insert into tbl_dept (dept_id, dept_name)
values (#{deptId,jdbcType=INTEGER}, #{deptName,jdbcType=VARCHAR})
</insert>
<insert id="insertSelective" parameterType="com.atguigu.crud.bean.Department">
insert into tbl_dept
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="deptId != null">
dept_id,
</if>
<if test="deptName != null">
dept_name,
</if>
</trim>
<trim prefix="values (" suffix=")" suffixOverrides=",">
<if test="deptId != null">
#{deptId,jdbcType=INTEGER},
</if>
<if test="deptName != null">
#{deptName,jdbcType=VARCHAR},
</if>
</trim>
</insert>
<select id="countByExample" parameterType="com.atguigu.crud.bean.DepartmentExample" resultType="java.lang.Long">
select count(*) from tbl_dept
<if test="_parameter != null">
<include refid="Example_Where_Clause" />
</if>
</select>
<update id="updateByExampleSelective" parameterType="map">
update tbl_dept
<set>
<if test="record.deptId != null">
dept_id = #{record.deptId,jdbcType=INTEGER},
</if>
<if test="record.deptName != null">
dept_name = #{record.deptName,jdbcType=VARCHAR},
</if>
</set>
<if test="_parameter != null">
<include refid="Update_By_Example_Where_Clause" />
</if>
</update>
<update id="updateByExample" parameterType="map">
update tbl_dept
set dept_id = #{record.deptId,jdbcType=INTEGER},
dept_name = #{record.deptName,jdbcType=VARCHAR}
<if test="_parameter != null">
<include refid="Update_By_Example_Where_Clause" />
</if>
</update>
<update id="updateByPrimaryKeySelective" parameterType="com.atguigu.crud.bean.Department">
update tbl_dept
<set>
<if test="deptName != null">
dept_name = #{deptName,jdbcType=VARCHAR},
</if>
</set>
where dept_id = #{deptId,jdbcType=INTEGER}
</update>
<update id="updateByPrimaryKey" parameterType="com.atguigu.crud.bean.Department">
update tbl_dept
set dept_name = #{deptName,jdbcType=VARCHAR}
where dept_id = #{deptId,jdbcType=INTEGER}
</update>
</mapper>
EmployeeMapper.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.atguigu.crud.dao.EmployeeMapper">
<resultMap id="BaseResultMap" type="com.atguigu.crud.bean.Employee">
<id column="emp_id" jdbcType="INTEGER" property="empId" />
<result column="emp_name" jdbcType="VARCHAR" property="empName" />
<result column="gender" jdbcType="CHAR" property="gender" />
<result column="email" jdbcType="VARCHAR" property="email" />
<result column="d_id" jdbcType="INTEGER" property="dId" />
</resultMap>
<resultMap type="com.atguigu.crud.bean.Employee" id="WithDeptResultMap">
<id column="emp_id" jdbcType="INTEGER" property="empId" />
<result column="emp_name" jdbcType="VARCHAR" property="empName" />
<result column="gender" jdbcType="CHAR" property="gender" />
<result column="email" jdbcType="VARCHAR" property="email" />
<result column="d_id" jdbcType="INTEGER" property="dId" />
<!-- 指定联合查询出的部门字段的封装 -->
<association property="department" javaType="com.atguigu.crud.bean.Department">
<id column="dept_id" property="deptId"/>
<result column="dept_name" property="deptName"/>
</association>
</resultMap>
<sql id="Example_Where_Clause">
<where>
<foreach collection="oredCriteria" item="criteria" separator="or">
<if test="criteria.valid">
<trim prefix="(" prefixOverrides="and" suffix=")">
<foreach collection="criteria.criteria" item="criterion">
<choose>
<when test="criterion.noValue">
and ${criterion.condition}
</when>
<when test="criterion.singleValue">
and ${criterion.condition} #{criterion.value}
</when>
<when test="criterion.betweenValue">
and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
</when>
<when test="criterion.listValue">
and ${criterion.condition}
<foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
#{listItem}
</foreach>
</when>
</choose>
</foreach>
</trim>
</if>
</foreach>
</where>
</sql>
<sql id="Update_By_Example_Where_Clause">
<where>
<foreach collection="example.oredCriteria" item="criteria" separator="or">
<if test="criteria.valid">
<trim prefix="(" prefixOverrides="and" suffix=")">
<foreach collection="criteria.criteria" item="criterion">
<choose>
<when test="criterion.noValue">
and ${criterion.condition}
</when>
<when test="criterion.singleValue">
and ${criterion.condition} #{criterion.value}
</when>
<when test="criterion.betweenValue">
and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
</when>
<when test="criterion.listValue">
and ${criterion.condition}
<foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
#{listItem}
</foreach>
</when>
</choose>
</foreach>
</trim>
</if>
</foreach>
</where>
</sql>
<sql id="Base_Column_List">
emp_id, emp_name, gender, email, d_id
</sql>
<sql id="WithDept_Column_List">
e.emp_id, e.emp_name, e.gender, e.email, e.d_id,d.dept_id,d.dept_name
</sql>
<!-- List<Employee> selectByExampleWithDept(EmployeeExample example);
Employee selectByPrimaryKeyWithDept(Integer empId);
-->
<!-- 查询员工同时带部门信息 -->
<select id="selectByExampleWithDept" resultMap="WithDeptResultMap">
select
<if test="distinct">
distinct
</if>
<include refid="WithDept_Column_List" />
FROM tbl_emp e
left join tbl_dept d on e.`d_id`=d.`dept_id`
<if test="_parameter != null">
<include refid="Example_Where_Clause" />
</if>
<if test="orderByClause != null">
order by ${orderByClause}
</if>
</select>
<select id="selectByPrimaryKeyWithDept" resultMap="WithDeptResultMap">
select
<include refid="WithDept_Column_List" />
FROM tbl_emp e
left join tbl_dept d on e.`d_id`=d.`dept_id`
where emp_id = #{empId,jdbcType=INTEGER}
</select>
<!-- 查询员工不带部门信息的 -->
<select id="selectByExample" parameterType="com.atguigu.crud.bean.EmployeeExample" resultMap="BaseResultMap">
select
<if test="distinct">
distinct
</if>
<include refid="Base_Column_List" />
from tbl_emp
<if test="_parameter != null">
<include refid="Example_Where_Clause" />
</if>
<if test="orderByClause != null">
order by ${orderByClause}
</if>
</select>
<select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap">
select
<include refid="Base_Column_List" />
from tbl_emp
where emp_id = #{empId,jdbcType=INTEGER}
</select>
<delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
delete from tbl_emp
where emp_id = #{empId,jdbcType=INTEGER}
</delete>
<delete id="deleteByExample" parameterType="com.atguigu.crud.bean.EmployeeExample">
delete from tbl_emp
<if test="_parameter != null">
<include refid="Example_Where_Clause" />
</if>
</delete>
<insert id="insert" parameterType="com.atguigu.crud.bean.Employee">
insert into tbl_emp (emp_id, emp_name, gender,
email, d_id)
values (#{empId,jdbcType=INTEGER}, #{empName,jdbcType=VARCHAR}, #{gender,jdbcType=CHAR},
#{email,jdbcType=VARCHAR}, #{dId,jdbcType=INTEGER})
</insert>
<insert id="insertSelective" parameterType="com.atguigu.crud.bean.Employee">
insert into tbl_emp
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="empId != null">
emp_id,
</if>
<if test="empName != null">
emp_name,
</if>
<if test="gender != null">
gender,
</if>
<if test="email != null">
email,
</if>
<if test="dId != null">
d_id,
</if>
</trim>
<trim prefix="values (" suffix=")" suffixOverrides=",">
<if test="empId != null">
#{empId,jdbcType=INTEGER},
</if>
<if test="empName != null">
#{empName,jdbcType=VARCHAR},
</if>
<if test="gender != null">
#{gender,jdbcType=CHAR},
</if>
<if test="email != null">
#{email,jdbcType=VARCHAR},
</if>
<if test="dId != null">
#{dId,jdbcType=INTEGER},
</if>
</trim>
</insert>
<select id="countByExample" parameterType="com.atguigu.crud.bean.EmployeeExample" resultType="java.lang.Long">
select count(*) from tbl_emp
<if test="_parameter != null">
<include refid="Example_Where_Clause" />
</if>
</select>
<update id="updateByExampleSelective" parameterType="map">
update tbl_emp
<set>
<if test="record.empId != null">
emp_id = #{record.empId,jdbcType=INTEGER},
</if>
<if test="record.empName != null">
emp_name = #{record.empName,jdbcType=VARCHAR},
</if>
<if test="record.gender != null">
gender = #{record.gender,jdbcType=CHAR},
</if>
<if test="record.email != null">
email = #{record.email,jdbcType=VARCHAR},
</if>
<if test="record.dId != null">
d_id = #{record.dId,jdbcType=INTEGER},
</if>
</set>
<if test="_parameter != null">
<include refid="Update_By_Example_Where_Clause" />
</if>
</update>
<update id="updateByExample" parameterType="map">
update tbl_emp
set emp_id = #{record.empId,jdbcType=INTEGER},
emp_name = #{record.empName,jdbcType=VARCHAR},
gender = #{record.gender,jdbcType=CHAR},
email = #{record.email,jdbcType=VARCHAR},
d_id = #{record.dId,jdbcType=INTEGER}
<if test="_parameter != null">
<include refid="Update_By_Example_Where_Clause" />
</if>
</update>
<update id="updateByPrimaryKeySelective" parameterType="com.atguigu.crud.bean.Employee">
update tbl_emp
<set>
<if test="empName != null">
emp_name = #{empName,jdbcType=VARCHAR},
</if>
<if test="gender != null">
gender = #{gender,jdbcType=CHAR},
</if>
<if test="email != null">
email = #{email,jdbcType=VARCHAR},
</if>
<if test="dId != null">
d_id = #{dId,jdbcType=INTEGER},
</if>
</set>
where emp_id = #{empId,jdbcType=INTEGER}
</update>
<update id="updateByPrimaryKey" parameterType="com.atguigu.crud.bean.Employee">
update tbl_emp
set emp_name = #{empName,jdbcType=VARCHAR},
gender = #{gender,jdbcType=CHAR},
email = #{email,jdbcType=VARCHAR},
d_id = #{dId,jdbcType=INTEGER}
where emp_id = #{empId,jdbcType=INTEGER}
</update>
</mapper>
现在我们把ssm的框架整合起来了，我们接下来查看如何进行单位
接下来我们来查看如何进行单元测试，首先对dao层进行单元测试
首先我们来查看dao层的代码
我们对EmployeeMapper进行单元测试
package com.atguigu.crud.dao;
import com.atguigu.crud.bean.Employee;
import com.atguigu.crud.bean.EmployeeExample;
import java.util.List;
import org.apache.ibatis.annotations.Param;
public interface EmployeeMapper {
long countByExample(EmployeeExample example);
int deleteByExample(EmployeeExample example);
int deleteByPrimaryKey(Integer empId);
int insert(Employee record);
int insertSelective(Employee record);
List<Employee> selectByExample(EmployeeExample example);
Employee selectByPrimaryKey(Integer empId);
int updateByExampleSelective(@Param("record") Employee record, @Param("example") EmployeeExample example);
int updateByExample(@Param("record") Employee record, @Param("example") EmployeeExample example);
int updateByPrimaryKeySelective(Employee record);
List<Employee> selectByExampleWithDept(EmployeeExample example);
Employee selectByPrimaryKeyWithDept(Integer empId);
int updateByPrimaryKey(Employee record);
}
对于dao层的测试我们使用到了TestNg和dbunit已经spring-test-dbunit框架
eclipse本身不支持TestNg
我们需要下载Testng的插件不清楚的看自己的博客eclipse如何集成TestNg，这里下载TestNg的时候一定要注意TestNg的版本
org.testng.eclipse_6.8.6.20130607_0745，一定要使用6.8.6版本，但是自己下载的时候使用成了org.testng.eclipse_6.9.8.201510130443
高版本在运行testNg的时候出现了socket close的问题，使用了很久才解决
关于dbunit工具的时候请看视频孔浩老师junit单元测试dbunit工具的使用
在使用dbunit工具的使用使用到了一个
<!-- dbutil测试工具的引入依赖 -->
<dependency>
<groupId>com.github.springtestdbunit</groupId>
<artifactId>spring-test-dbunit</artifactId>
<version>1.2.0</version>
</dependency>
这个工具框架，很有用，我们来看具体的dao层的测试代码
DaoTestByTestNG.java
package com.atguigu.crud.test;
import java.io.FileWriter;
import java.util.List;
import junit.framework.Assert;
import org.dbunit.database.DatabaseConnection;
import org.dbunit.database.IDatabaseConnection;
import org.dbunit.dataset.IDataSet;
import org.dbunit.dataset.xml.FlatXmlDataSet;
import org.dbunit.dataset.xml.FlatXmlProducer;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.TestExecutionListeners;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.support.DependencyInjectionTestExecutionListener;
import org.springframework.test.context.support.DirtiesContextTestExecutionListener;
import org.springframework.test.context.testng.AbstractTestNGSpringContextTests;
import org.springframework.test.context.transaction.TransactionConfiguration;
import org.springframework.test.context.web.WebAppConfiguration;
import org.springframework.transaction.annotation.Transactional;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;
import org.xml.sax.InputSource;
import com.atguigu.crud.bean.Employee;
import com.atguigu.crud.bean.EmployeeExample;
import com.atguigu.crud.bean.EmployeeExample.Criteria;
import com.atguigu.crud.dao.DepartmentMapper;
import com.atguigu.crud.dao.EmployeeMapper;
import com.github.springtestdbunit.DbUnitTestExecutionListener;
import com.github.springtestdbunit.annotation.DatabaseOperation;
import com.github.springtestdbunit.annotation.DatabaseSetup;
import com.github.springtestdbunit.annotation.DatabaseTearDown;
import com.github.springtestdbunit.annotation.DbUnitConfiguration;
import com.github.springtestdbunit.annotation.ExpectedDatabase;
import com.github.springtestdbunit.assertion.DatabaseAssertionMode;
/**
* 对dao进行单元测试的类
* classpath:/dbutils_xml/expect.xml
* */
@SuppressWarnings("deprecation")
@ContextConfiguration(locations = {"classpath:applicationContext.xml",
"classpath:dispatcher-servlet.xml" })
//配置事务的回滚,对数据库的增删改都会回滚,便于测试用例的循环利用
@TransactionConfiguration(transactionManager = "transactionManager", defaultRollback = true)
@Transactional
@TestExecutionListeners({DbUnitTestExecutionListener.class,
DependencyInjectionTestExecutionListener.class,
DirtiesContextTestExecutionListener.class})
// 如果在Spring Test DbUnit中不配置其他的数据源默认使用Spring容器中id="dataSource"的数据源，Spring Test DbUnit支持配置多数据源。
@DbUnitConfiguration(databaseConnection="pooledDataSource")
public class DaoTestByTestNG extends AbstractTestNGSpringContextTests {
@Autowired
private DepartmentMapper departmentMapper;
@Autowired
private EmployeeMapper employeeMapper;
@Test
@DatabaseSetup(type=DatabaseOperation.CLEAN_INSERT,value="classpath:/dbutils_xml/setup.xml")//setup阶段执行clean_insert操作，数据导入到数据库中，在测试之前执行
@ExpectedDatabase(assertionMode=DatabaseAssertionMode.NON_STRICT,value="classpath:/dbutils_xml/add_expect.xml")//将测试操作后的数据库数据与期望的xml数据进行比较是否相等，来判定测试是否通过，assertionMode设置比较的模式。跑完test后执行
@DatabaseTearDown(type=DatabaseOperation.CLEAN_INSERT,value="classpath:/dbutils_xml/setup.xml")//恢复数据库中的数据，测试之后执行。
public void testInsert() {
System.out.println("insert");
Employee employee = new Employee(13, "kebi", "M", "kebi@qq.com", 2);
employeeMapper.insert(employee);
Employee employee2 = employeeMapper.selectByPrimaryKey(13);
Assert.assertNotNull(employee2);
Assert.assertEquals(employee.getEmpId(), employee2.getEmpId());
Assert.assertEquals(employee.getEmail(), employee2.getEmail());
Assert.assertEquals(employee.getEmpName(), employee2.getEmpName());
}
/**
* 修改联系人的操作
* */
@Test
@DatabaseSetup(type=DatabaseOperation.CLEAN_INSERT,value="classpath:/dbutils_xml/setup.xml")//setup阶段执行clean_insert操作，数据导入到数据库中，在测试之前执行
@ExpectedDatabase(assertionMode=DatabaseAssertionMode.NON_STRICT,value="classpath:/dbutils_xml/update_expect.xml")//将测试操作后的数据库数据与期望的xml数据进行比较是否相等，来判定测试是否通过，assertionMode设置比较的模式。跑完test后执行
@DatabaseTearDown(type=DatabaseOperation.CLEAN_INSERT,value="classpath:/dbutils_xml/setup.xml")//恢复数据库中的数据，测试之后执行。
public void testUpdate() {
System.out.println("update");
Employee employee = new Employee(12, "kebi", "M", "kebi@qq.com", 2);
employeeMapper.updateByPrimaryKeySelective(employee);
Employee employee2 = employeeMapper.selectByPrimaryKey(12);
Assert.assertNotNull(employee2);
Assert.assertEquals(employee.getEmpId(), employee2.getEmpId());
Assert.assertEquals(employee.getEmail(), employee2.getEmail());
Assert.assertEquals(employee.getEmpName(), employee2.getEmpName());
}
/**
* 删除联系人的操作
* */
/**
* 修改联系人的操作
* */
@Test
@DatabaseSetup(type=DatabaseOperation.CLEAN_INSERT,value="classpath:/dbutils_xml/setup.xml")//setup阶段执行clean_insert操作，数据导入到数据库中，在测试之前执行
@ExpectedDatabase(assertionMode=DatabaseAssertionMode.NON_STRICT,value="classpath:/dbutils_xml/delete_expect.xml")//将测试操作后的数据库数据与期望的xml数据进行比较是否相等，来判定测试是否通过，assertionMode设置比较的模式。跑完test后执行
@DatabaseTearDown(type=DatabaseOperation.CLEAN_INSERT,value="classpath:/dbutils_xml/delete_expect.xml")//恢复数据库中的数据，测试之后执行。
public void testDelete() {
System.out.println("delete");
int deleteByPrimaryKey = employeeMapper.deleteByPrimaryKey(12);
//此处通过update操作返回的受影响行数来断定update操作是否执行成功
}
/**
* 删除联系人的操作
* */
/**
* 获得联系人的全部信息
* */
@Test
@DatabaseSetup(type=DatabaseOperation.CLEAN_INSERT,value="classpath:/dbutils_xml/setup.xml")//setup阶段执行clean_insert操作，数据导入到数据库中，在测试之前执行
@ExpectedDatabase(assertionMode=DatabaseAssertionMode.NON_STRICT,value="classpath:/dbutils_xml/setup.xml")//将测试操作后的数据库数据与期望的xml数据进行比较是否相等，来判定测试是否通过，assertionMode设置比较的模式。跑完test后执行
@DatabaseTearDown(type=DatabaseOperation.CLEAN_INSERT,value="classpath:/dbutils_xml/setup.xml")//恢复数据库中的数据，测试之后执行。
public void testGetAllEmployees() {
System.out.println("testGetAllEmployees");
EmployeeExample example = new EmployeeExample();
Criteria createCriteria = example.createCriteria();
List<Employee> list = employeeMapper.selectByExample(example);
Assert.assertEquals(2, list.size());
Assert.assertEquals("admin10", list.get(0).getEmpName());
Assert.assertEquals("weqwe", list.get(1).getEmpName());
}
//备份数据库文件
@BeforeClass
public static void testBackup(){
try {
System.out.println("@BeforeClass");
IDatabaseConnection con = new DatabaseConnection(DBUtils.getConnection());
IDataSet createDataSet = con.createDataSet();
FlatXmlDataSet.write(createDataSet, new FileWriter("d:/test22.xml"));
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
//还原数据库文件
@AfterClass
public static void testResume(){
try {
System.out.println("@AfterClass");
IDatabaseConnection con = new DatabaseConnection(DBUtils.getConnection());
IDataSet dataSet = new FlatXmlDataSet(new FlatXmlProducer(
new InputSource("d:/test22.xml")));
//清空数据库中的数据并插入xml中的数据
org.dbunit.operation.DatabaseOperation.CLEAN_INSERT.execute(con,dataSet);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
接下来重点对上面的代码几个关键点进行备注下：
第一需要：使用Spring-Test对Spring框架进行单元测试，需要引入下面的java包
<!--spring单元测试依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${springframework}</version>
<scope>test</scope>
</dependency>第二：因为采用的TestNg测试框架，没有使用junit测试框架，所以在编写的单元测试类都需要继承AbstractTestNGSpringContextTests
如果使用的是junit的测试框架，直接使用注解@RunWith(SpringJUnit4ClassRunner.class)
第三：在运行单元测试框架的时候，使用首先dbunit备份数据库中的真实数据，然后在测试的过程中使用测试数据，最后单元测试完成之后再把保存的真实数据
还原到数据库中
//备份数据库文件
@BeforeClass
public static void testBackup(){
try {
System.out.println("@BeforeClass");
IDatabaseConnection con = new DatabaseConnection(DBUtils.getConnection());
IDataSet createDataSet = con.createDataSet();
FlatXmlDataSet.write(createDataSet, new FileWriter("d:/test22.xml"));
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
//还原数据库文件
@AfterClass
public static void testResume(){
try {
System.out.println("@AfterClass");
IDatabaseConnection con = new DatabaseConnection(DBUtils.getConnection());
IDataSet dataSet = new FlatXmlDataSet(new FlatXmlProducer(
new InputSource("d:/test22.xml")));
//清空数据库中的数据并插入xml中的数据
org.dbunit.operation.DatabaseOperation.CLEAN_INSERT.execute(con,dataSet);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
第四：spring-test-dbunit框架的使用
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