SSM整合-测试逆向工程生成的mapper

首先要添加jar包
在pom.xml文件中添加

<!--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>
            <scope>compile</scope>
        </dependency>

然后在com.atguigu.crud.test文件夹中创建MapperTest测试文件

package com.atguigu.crud.test;

import com.atguigu.crud.bean.Employee;
import com.atguigu.crud.bean.EmployeeExample;
import com.atguigu.crud.dao.DepartmentMapper;
import com.atguigu.crud.dao.EmployeeMapper;
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.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import java.util.List;

/**
 * @author nyh
 * @create 2018-08-17  13:37
 **/
/*指定用哪个单元测试类来执行*/
@RunWith(value = SpringJUnit4ClassRunner.class)
/*@ContextConfiguration可以指定spring配置文件的位置,然后帮我们自动生成IOC容器*/
@ContextConfiguration(locations = {"classpath:applicationContext.xml"})
public class MapperTest {

    @Autowired
    DepartmentMapper departmentMapper;

    @Autowired
    EmployeeMapper employeeMapper;

    @Autowired
    SqlSession sqlSession;

    @Test
    public void TestCRUD() {
        /*往 dept表插入数据*/
//        departmentMapper.insertSelective(new Department(null,"开发部"));
//        departmentMapper.insertSelective(new Department(null,"测试部"));

        /*往emp表插入数据*/
        /*employeeMapper.insertSelective(new Employee(null,
                "Jerry",
                "M",
                "[email protected]",
                1));*/
        /*批量插入数据*/
//        EmployeeMapper mapper = sqlSession.getMapper(EmployeeMapper.class);
//        for(int i=0;i<1000;i++){
//            String uid = UUID.randomUUID().toString().substring(0, 5)+i;
//            mapper.insertSelective(new Employee(null,uid,"M",uid+"@qq.com",1));
//        }

//        查询emp表
        List<Employee> employees = employeeMapper.selectByExample(new EmployeeExample());
        for (Employee employee : employees) {
            System.out.println(employee.toString());
        }
        System.out.println("查询完了");


    }

}

上面批量插入数据的操作可以在applicationContext.xml中配置一个配置一个可以执行批量的SqlSession,方便以后的批量操作

<!--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>

重点是这两个注释

/*指定用哪个单元测试类来执行*/
@RunWith(value = SpringJUnit4ClassRunner.class)
/*@ContextConfiguration可以指定spring配置文件的位置,然后帮我们自动生成IOC容器*/
@ContextConfiguration(locations = {"classpath:applicationContext.xml"})