SSM项目之搭建Spring单元测试环境实现增删改查

川长思鸟来 2022-10-23 15:29 177阅读 0赞

在上一篇博文中，我们使用mybatis generators实现了逆向工程生成了相应的实体类，mapper接口和mapper的xml文件，那么，在本篇博文中我们要实现的就是测试Spring环境并实现数据增删改查。  
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首先，我们将applicationContext.xml文件配置好，即我们的spring

<?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">
    
    	<context:component-scan base-package="com.atguigu">
    		<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
    	</context:component-scan>
    
    	
    	
    	<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>
    
    	
    	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    		
    		<property name="configLocation" value="classpath:mybatis-config.xml"></property>
    		<property name="dataSource" ref="pooledDataSource"></property>
    		
    		<property name="mapperLocations" value="classpath:mapper/*.xml"></property>
    	</bean>
    
    	
    	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    		
    		<property name="basePackage" value="com.atguigu.crud.dao"></property>
    	</bean>
    	
    	
    	<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>
    	
    
    	
    	<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    		
    		<property name="dataSource" ref="pooledDataSource"></property>
    	</bean>
    	
    	<aop:config>
    		
    		<aop:pointcut expression="execution(* com.atguigu.crud.service..*(..))" id="txPoint"/>
    		
    		<aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint"/>
    	</aop:config>
    	
    	
    	<tx:advice id="txAdvice" transaction-manager="transactionManager">
    		<tx:attributes>
    			
    			<tx:method name="*"/>
    			
    			<tx:method name="get*" read-only="true"/>
    		</tx:attributes>
    	</tx:advice>
    	
    	
    	
    </beans>

然后我们需要进行mybatis.xml文件的配置  
*这个地方曾经困扰了博主好久，因为博主将mapper的包又重新扫描了一遍，造成了错误*

<?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>
    	<settings>//命名规则
    		<setting name="mapUnderscoreToCamelCase" value="true"/>
    	</settings>
    	<typeAliases> 
    		
    		<package name="com.ssm.beans" />
    	</typeAliases>
    </configuration>

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3Blbmd4aWFuZzE5OTg_size_16_color_FFFFFF_t_70 1]  
然后我们需要进行测试环境搭建  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3Blbmd4aWFuZzE5OTg_size_16_color_FFFFFF_t_70 2]  
具体代码：

package com.ssm.test;
    
    import java.util.UUID;
    
    import org.apache.ibatis.session.SqlSession;
    import org.junit.Test;
    import org.junit.runner.RunWith;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    import org.springframework.test.context.ContextConfiguration;
    import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
    
    import com.ssm.beans.Department;
    import com.ssm.beans.USer;
    import com.ssm.dao.DepartmentMapper;
    import com.ssm.dao.USerMapper;
    //指定使用spring的测试模块
    @RunWith(SpringJUnit4ClassRunner.class)
    @ContextConfiguration(locations={ "classpath:applicationContext.xml"})
    public class MapperTest { 
    	/* * 测试dao层 * 推荐spring就使用spring的单元测试可以自动注入我们需要的组件 * 1.导入Spring测试的功能模块 * 2.@ContextConfiguration配置文件的位置 * 3.直接autowrited要使用的组件 */
    	@Autowired
    	DepartmentMapper deptmapper;
    	@Autowired
    	USerMapper usermapper;
    	@Autowired
    	SqlSession sqlsession;
    	@Test
    	public void testCURD(){ 
    		//测试部门查询
    		//1.创建spring ioc容器
    		ApplicationContext ioc=new ClassPathXmlApplicationContext("applicationContext.xml");
    		//2.从容器中获取mapper
    		ioc.getBean(DepartmentMapper.class);
    		System.out.println(ioc);
    		System.out.println(deptmapper);
    		//插入几个部门
    		new Department(null,"开发部");
    		//deptmapper.insertSelective(new Department(null,"开发部"));
    		
    		//生成员工数据，测试员工插入
    		//usermapper.insertSelective(new USer(null,"岳好",1));
    		//批量插入 使用可以执行批量操作的sqlsesion
    		USerMapper usermapper=sqlsession.getMapper(USerMapper.class);
    		for(int i=0;i<20;i++){ 
    			String name=UUID.randomUUID().toString().substring(0, 5)+""+i;
    			usermapper.insertSelective(new USer(null,name,i%5));
    		}
    		System.out.println("批量添加数据完成");
    		
    	}
    	public static void main(String[] args) { 
    		// TODO Auto-generated method stub
    		
    	}
    
    }

这样，我们在执行完后就可衣实现相应的数据库操作了。  
码字不易，给个赞呗。

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