【实战】Spring+SpringMVC+Mybatis实现增删改查--（一）SSM环境的搭建及整合

Spring+SpringMVC+Mybatis实现增删改查--（一）SSM环境的搭建及整合

整个项目的功能点：

整个项目的技术点

一、Spring+Spring MVC+Mybatis项目基础环境搭建

                                                        

1、创建一个maven project工程

2.在pom.xml中引入项目所依赖的包

spring、springmvc、mybatis、数据库连接池、驱动包以及其他包

具体的包：spring-webmvc   spring-jdbc  spring-aspects

mybatis  mybatis-spring   c3p0  mysql-connector

jstl javax.servlet-api  junit  mybatis-generator-core spring-test

pom.xml文件

<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.lcz</groupId>
  <artifactId>ssm_crud</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <!-- 引入项目依赖的jar包 -->
  <dependencies>
  	<!-- 引入spring mvc及spring -->
  	<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
	<dependency>
	    <groupId>org.springframework</groupId>
	    <artifactId>spring-webmvc</artifactId>
	    <version>4.3.7.RELEASE</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的整合 -->
	<!-- 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>
	<!-- 其他包 jstl servlet-api junit -->
	<!-- https://mvnrepository.com/artifact/javax.servlet/jstl -->
	<dependency>
	    <groupId>javax.servlet</groupId>
	    <artifactId>jstl</artifactId>
	    <version>1.2</version>
	</dependency>
	<!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
	<dependency>
	    <groupId>javax.servlet</groupId>
	    <artifactId>javax.servlet-api</artifactId>
	    <version>3.1.0</version>
	    <scope>provided</scope>
	</dependency>
	<!-- https://mvnrepository.com/artifact/junit/junit -->
	<dependency>
	    <groupId>junit</groupId>
	    <artifactId>junit</artifactId>
	    <version>4.12</version>
	    <scope>test</scope>
	</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>
	<!-- 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>test</scope>
	</dependency>
	
  </dependencies>
</project>

3.引入bootstrap框架

（1）下载bootstrap框架

https://v3.bootcss.com/getting-started/#download

下载用于生产环境的BootStrap的。

（2）在项目的webapp下新建一个static文件夹里，在里面新建一个js文件夹用来存放从网上下载的jquery.js，同时在static文件夹里粘贴下载好的bootstrap文件夹。

                                                        

（3）如何界面中引入bootstrap框架

<!-- 引入样式 -->
 <script type="text/javascript" src="static/js/jquery-3.3.1.min.js"></script>
 <link href="static/bootstrap-3.3.7-dist/css/bootstrap.min.css" rel="stylesheet">
 <script src="static/bootstrap-3.3.7-dist/js/bootstrap.min.js"></script>

4.编写ssm整合的关键配置文件

                                                        

web.xml application.xml springmvc.xml  mybatis_config.xml

(1).webapp/WEB-INF/web.xml

  <!-- 1.启动spring的容器 -->  

可以通过快捷键alt+/，选择contextloadlistener，修改<param-value>中为applicationContext.xml的路径

<!-- 2.springmvc的前端控制器，拦截所有请求 --> 

可以通过快捷键alt+/，选择dispatcherServlet，然后修改<param-value>中为spring_mvc.xml

<!-- 3.字符编码过滤器,一定要放在所有过滤器之前 -->

CharacterEncodingFilter  通过ctrl+shift+t快捷键搜索前面的包，打开，并进行配置

<!-- 4..使用Rest风格的URI,将页面普通的post请求转换为指定delete或者post请求-->

HiddenHttpMethodFilter通过ctrl+shift+t快捷键搜索前面的包，打开，并进行配置

具体的配置如下：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
  <!-- 1.启动spring的容器 -->
  <!-- needed for ContextLoaderListener -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:applicationContext.xml</param-value>
	</context-param>

	<!-- Bootstraps the root web application context before servlet initialization -->
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
	
	<!-- 2.springmvc的前端控制器，拦截所有请求 -->
	<!-- The front controller of this Spring Web application, responsible for handling all application requests -->
	<servlet>
		<servlet-name>springDispatcherServlet</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:spring_mvc.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>

	<!-- Map all requests to the DispatcherServlet for handling -->
	<servlet-mapping>
		<servlet-name>springDispatcherServlet</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>
	
	<!-- 3.字符编码过滤器,一定要放在所有过滤器之前 -->
	<filter>
		<filter-name>CharacterEncodingFilter</filter-name>
		<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
		<init-param>
			<param-name>encoding</param-name>
			<param-value>utf-8</param-value>
		</init-param>
		<init-param>
			<param-name>forceRequestEncoding</param-name>
			<param-value>true</param-value>
		</init-param>
		<init-param>
			<param-name>forceResponseEncoding</param-name>
			<param-value>true</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>CharacterEncodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
	
	<!-- 4..使用Rest风格的URI,将页面普通的post请求转换为指定delete或者post请求-->
	<filter>
		<filter-name>HiddenHttpMethodFilter</filter-name>
		<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
	</filter>
	<filter-mapping>
		<filter-name>HiddenHttpMethodFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
</web-app>

(2).spring_mvc.xml

a.src/main/resources新建一个spring bean configuration file。

                     

                    

这里要注意要想出现上述配置文件，需要在Help->Eclipse Marketplace中安装好STS（Spring Tool Suit），然后在eclipse中preferences中general->editors->file associations进行配置

                     

将spring config editor设置为default，为第一个显示，即设置完毕。

b.设置spring_mvc.xml

<!-- 1.配置扫描器，让其只扫描包含@Controller的 -->

<!-- 2.配置视图解析器，方便页面返回 -->

<!-- 3.标准配置 -->

<!-- 将springmvc不能处理的请求交给tomcat -->

<!-- 能支持springmvc更高级的一些功能，JSR303校验，快捷的ajax请求，映射动态请求 -->

添加链接时，可以快速的在视图中通过namespaces来添加如下图

                 

具体的配置如下：

<?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:mvc="http://www.springframework.org/schema/mvc"
	xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
		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-4.3.xsd">
	<!-- spring MVC的配置文件，包含网站跳转逻辑的控制，配置-->
	
	<!-- 1.配置扫描器，让其只扫描包含@Controller的 -->
	<context:component-scan base-package="com.lcz" use-default-filters="true">
		<!-- 只扫描控制器 -->
		<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
	</context:component-scan>
	
	<!-- 2.配置视图解析器，方便页面返回 -->
	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/views/"></property>
		<property name="suffix" value=".jsp"></property>
	</bean>
	
	<!-- 3.标准配置 -->
	<!-- 将springmvc不能处理的请求交给tomcat -->
	<mvc:default-servlet-handler/>
	<!-- 能支持springmvc更高级的一些功能，JSR303校验，快捷的ajax请求，映射动态请求 -->
	<mvc:annotation-driven/>
</beans>

（3）applicationContext.xml（同上一步建立步骤）

<!-- 1.数据源的配置 -->

<!-- 2.业务逻辑组件扫描(除了扫描控制器) -->

<!--3.配置和mybatis的整合 -->

<!-- 4.配置扫描器，将mybatis接口的实现加入到ioc容器中 -->

<!-- 5.事务控制的配置 -->

<!-- 6.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资式的） -->

 具体的配置如下：

<?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/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">
	<!-- spring的配置文件，这里主要配置和业务逻辑有关的 -->
	<!-- 数据源，事务控制，xxx -->
	
	<!-- 1.数据源的配置 -->
	<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>
	
	<!-- 2.业务逻辑组件扫描(除了扫描控制器) -->
	<context:component-scan base-package="com.lcz">
		<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
	</context:component-scan>
	
	<!--3.配置和mybatis的整合 -->
	<bean name="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<!-- 指定mybatis全局配置文件的配置 -->
		<property name="configLocation" value="classpath:mybatis_config.xml"></property>
		<!-- 指定数据源 -->
		<property name="dataSource" ref="pooledDataSource"></property>
		<!-- 指定mybatis，mapper文件的位置 -->
		<property name="mapperLocations" value="classpath:mapper/*.xml"></property>
	</bean>
	
	<!-- 4.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">
		<!-- 扫描所有的dao接口的实现，加入到ioc容器中 -->
		<property name="basePackage" value="com.lcz.crud.dao"></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>
	<!-- 5.事务控制的配置 -->
	<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<!-- 控制数据源 -->
		<property name="dataSource" ref="pooledDataSource"></property>
	</bean>
	
	<!-- 6.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的） -->
	<aop:config>
		<!-- 切入点表达式 -->
		<aop:pointcut expression="execution(* com.lcz.crud.service..*(..))" id="txPoint"/>
		<!-- 配置事务增强 -->
		<aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint"/>
	</aop:config>
	<!-- 配置事务增强，事务如何切入 -->
	<tx:advice id="txAdvice" transaction-manager="transactionManager">
		<tx:attributes>
			<!-- 切入点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>
	
	<!-- spring配置文件的核心店(数据源、mybatis整合，事务控制) -->
</beans>

（4）mybatis_config.xml

新建一个.xml文件，在其中设置好全局配置

<?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">
<!-- 全局配置 -->
<configuration>
	<!-- 驼峰命名法 -->
	<settings>
		<setting name="mapUnderscoreToCamelCase" value="true"/>
	</settings>
	<!-- 类型别名 -->
	<typeAliases>
		<package name="com.lcz.crud.bean"/>
	</typeAliases>
</configuration>

4.数据库的编写

在数据库中建立一个ssm_crud数据库并建立两个表tbl_dept及tbl_emp

（1）.tbl_dept表的设计规则

                 

 

（2）.tbl_empt表的设计规则

                 

（3）.tbl_empt表的关联规则

设置外键

                

（4）下面给出建表语句

 tbl_dept表的建表语句

/*
Navicat MySQL Data Transfer

Source Server         : mysql
Source Server Version : 50721
Source Host           : localhost:3306
Source Database       : ssm_crud

Target Server Type    : MYSQL
Target Server Version : 50721
File Encoding         : 65001

Date: 2018-06-08 07:19:49
*/

SET FOREIGN_KEY_CHECKS=0;

-- ----------------------------
-- Table structure for `tbl_dept`
-- ----------------------------
DROP TABLE IF EXISTS `tbl_dept`;
CREATE TABLE `tbl_dept` (
  `dept_id` int(11) NOT NULL AUTO_INCREMENT,
  `dept_name` varchar(255) NOT NULL,
  PRIMARY KEY (`dept_id`)
) ENGINE=InnoDB AUTO_INCREMENT=23 DEFAULT CHARSET=utf8;

-- ----------------------------
-- Records of tbl_dept
-- ----------------------------
INSERT INTO `tbl_dept` VALUES ('1', '开发部');
INSERT INTO `tbl_dept` VALUES ('2', '测试部');

tbl_emp表的建表语句

/*
Navicat MySQL Data Transfer


Source Server         : mysql
Source Server Version : 50721
Source Host           : localhost:3306
Source Database       : ssm_crud


Target Server Type    : MYSQL
Target Server Version : 50721
File Encoding         : 65001


Date: 2018-06-08 07:19:57
*/


SET FOREIGN_KEY_CHECKS=0;


-- ----------------------------
-- 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) NOT NULL,
  `gender` char(1) NOT NULL,
  `email` varchar(255) NOT NULL,
  `d_id` int(11) NOT NULL,
  PRIMARY KEY (`emp_id`),
  KEY `fk_emp_dept` (`d_id`),
  CONSTRAINT `fk_emp_dept` FOREIGN KEY (`d_id`) REFERENCES `tbl_dept` (`dept_id`)
) ENGINE=InnoDB AUTO_INCREMENT=1004 DEFAULT CHARSET=utf8;


-- ----------------------------
-- Records of tbl_emp
-- ----------------------------
INSERT INTO `tbl_emp` VALUES ('1', 'Mali', 'F', '[email protected]', '1');
INSERT INTO `tbl_emp` VALUES ('2', 'Mark', 'M', '[email protected]', '1');

5.mybatis generator逆向工程的编写

使用mybatis逆向工程可以直接根据数据库中数据表生成bean以及mapper

mybatis generator

（1）在pom.xml中导包

    mybatis-generator-core

（2）在项目下新建mbg.xml

 打开网址http://www.mybatis.org/generator/configreference/xmlconfig.html

 找到XML Configuration Reference然后复制粘贴到我们新建的mbg.xml中

     

  然后修改配置信息，配置好数据库连接信息，指定javabean的生成位置、指定sql映射文件生成的位置、指定dao接口生成的位置，table指定每个表的生成策略。

        源码如下：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
  PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
  "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">

<generatorConfiguration>
  
  <context id="DB2Tables" targetRuntime="MyBatis3">
  <commentGenerator>
			<property name="suppressAllComments" value="true" />
	</commentGenerator>
    <!-- 配置数据库连接信息 -->
    <jdbcConnection driverClass="com.mysql.jdbc.Driver"
        connectionURL="jdbc:mysql://localhost:3306/ssm_crud"
        userId="root"
        password="root">
    </jdbcConnection>

    <javaTypeResolver >
      <property name="forceBigDecimals" value="false" />
    </javaTypeResolver>
    
	<!-- 指定javabean生成的位置 -->
    <javaModelGenerator targetPackage="com.lcz.crud.bean" targetProject=".\src\main\java">
      <property name="enableSubPackages" value="true" />
      <property name="trimStrings" value="true" />
    </javaModelGenerator>
	<!-- 指定sql映射文件生成的位置 -->
    <sqlMapGenerator targetPackage="mapper"  targetProject=".\src\main\resources">
      <property name="enableSubPackages" value="true" />
    </sqlMapGenerator>
	<!-- 指定dap接口生成的位置，mapper接口 -->
    <javaClientGenerator type="XMLMAPPER" targetPackage="com.lcz.crud.dao"  targetProject=".\src\main\java">
      <property name="enableSubPackages" value="true" />
    </javaClientGenerator>
	<!-- table指定每个表的生成策略 -->
   	<table tableName="tbl_emp" domainObjectName="Employee"></table>
	<table tableName="tbl_dept" domainObjectName="Department"></table>
  </context>
</generatorConfiguration>

（3）逆向工程的运行

运行之前先建立好各个包

 

然后在com.lcz.crud.test这个包中新建一个MBGTest的类用来运行。

运行代码可见刚才的Mybatis generator的官网的连接中

             

修改好文件位置，运行即可。

源码如下：

package com.lcz.crud.test;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

import org.mybatis.generator.api.MyBatisGenerator;
import org.mybatis.generator.config.Configuration;
import org.mybatis.generator.config.xml.ConfigurationParser;
import org.mybatis.generator.internal.DefaultShellCallback;

public class MBGTest {

	public static void main(String[] args) throws Exception {
		List<String> warnings = new ArrayList<String>();
		boolean overwrite = true;
		File configFile = new File("mbg.xml");
		ConfigurationParser cp = new ConfigurationParser(warnings);
		Configuration config = cp.parseConfiguration(configFile);
		DefaultShellCallback callback = new DefaultShellCallback(overwrite);
		MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config,
				callback, warnings);
		myBatisGenerator.generate(null);
	}
}

（4）运行结果

运行之后可见bean包及dao包以及resource下的mapper文件自动生成了。这里由于项目关系，所以对mapper文件下的EmployeeMapper.xml文件进行了修改，新增了一个关联查询，可以查询employee的时候同时查询出department。

                                     

 

6.导入spring test

通过spring test来测试上述的CRUD是否能够运行

（1）导入springtest包

（2）@ContextConfiguration指定spring配置文件的位置

（3）直接autowired的组件

package com.lcz.crud.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.lcz.crud.bean.Department;
import com.lcz.crud.bean.Employee;
import com.lcz.crud.dao.DepartmentMapper;
import com.lcz.crud.dao.EmployeeMapper;

/**
 * 测试dao层的工作
 * @author LvChaoZhang
 * 推荐spring的项目就可以使用spring的单元测试，可以自动注入我们需要的空间
 * 1.导入springtest包
 * 2.@ContextConfiguration指定spring配置文件的位置
 * 3.直接autowired的组件
 */
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"classpath:applicationContext.xml"})
public class MapperTest {
	@Autowired
	DepartmentMapper departmentmapper;
	@Autowired
	EmployeeMapper employmapper;
	
	@Autowired
	SqlSession sqlsession;
	/**
	 * 测试DepartmentMapper
	 */
	@SuppressWarnings("resource")
	@Test
	public void testCRUD() {
//		//1.创建spring ioc容器
//		ApplicationContext ioc = new ClassPathXmlApplicationContext("spring.xml");
//		//2.从容器中获取mapper
//		Department bean = ioc.getBean(Department.class);
		System.out.println(departmentmapper);
		
		//1.插入几个部门
		
//		departmentmapper.insertSelective(new Department(null,"开发部"));
//		departmentmapper.insertSelective(new Department(null,"测试部"));
		
		//2.插入员工
		//employmapper.insertSelective(new Employee(null,"jack","M","[email protected]",1));
		//3.批量插入多个员工,批量，使用可以执行批量操作的sqlsession
		/*for()
		employmapper.insertSelective(new Employee(null,"jack","M","[email protected]",1));
		*/
		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+"@lcz.com",1));
		}
		System.out.println("批量执行完毕！");
	}
}

7.项目链接

github地址：点击打开链接

csdn地址：点击打开链接