- 创建Maven项目
- pom.xml中导入Maven依赖
<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.joey</groupId>
<artifactId>ssm-curd</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<!-- 引入项目依赖的jar包 -->
<dependencies>
<!-- pagehelper -->
<!-- https://mvnrepository.com/artifact/com.github.pagehelper/pagehelper -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>5.0.0</version>
</dependency>
<!-- springMVC、spring -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.1.3.RELEASE</version>
</dependency>
<!-- spring-jdbc -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.1.3.RELEASE</version>
</dependency>
<!-- spring-test -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.1.3.RELEASE</version>
<scope>test</scope>
</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>5.1.3.RELEASE</version>
</dependency>
<!-- Mybatis -->
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.6</version>
</dependency>
<!-- spring整合Mybatis适配包 -->
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.2</version>
</dependency>
<!-- c3p0数据库连接池驱动 -->
<!-- https://mvnrepository.com/artifact/com.mchange/c3p0 -->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<!-- MySql驱动 -->
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.13</version>
</dependency>
<!-- web开发使用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>4.0.1</version>
<scope>provided</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-api -->
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>5.3.2</version>
<scope>test</scope>
</dependency>
<!-- Mybatis逆向工程 -->
<!-- https://mvnrepository.com/artifact/org.mybatis.generator/mybatis-generator-core -->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.7</version>
</dependency>
</dependencies>
</project>- 配置web.xml
<?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"
id="WebApp_ID" version="2.5" >
<!-- 1.配置Spring启动容器 -->
<!-- needed for ContextLoaderListener -->
<context-param>
<param-name>contextConfigLocation</param-name>
<!-- 加载Spring配置文件 -->
<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:SpringMvcConfig.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，放在所有过滤器前 -->
<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请求转为指定的delete或者put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>
<filter>
<filter-name>HttpPutFormContentFilter</filter-name>
<filter-class>org.springframework.web.filter.HttpPutFormContentFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>HttpPutFormContentFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>- 配置SpringMVC配置文件
<?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-3.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
<!--SpringMVC的配置文件，包含网站跳转逻辑的控制，配置 -->
<context:component-scan base-package="com.joey" use-default-filters="false">
<!--只扫描@Controller注解的控制器。 -->
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!--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>
<!--两个标准配置 -->
<!-- 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...映射动态请求 -->
<mvc:annotation-driven/>
</beans>- 配置Spring配置文件
<?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.joey">
<context:exclude-filter type="annotation"
expression="org.springframework.stereotype.Controller" />
</context:component-scan>
<!-- 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 ================-->
<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>
<property name="dataSource" ref="pooledDataSource"></property>
<!-- 指定mybatis，mapper文件的位置 -->
<property name="mapperLocations" value="classpath:mapper/*.xml"></property>
</bean>
<!-- 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.joey.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>
<!--============================================= -->
<!-- ===============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） -->
<aop:config>
<!-- 切入点表达式 -->
<aop:pointcut expression="execution(* com.joey.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>
<!-- 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配置文件的核心点（数据源、与mybatis的整合，事务控制） -->
</beans>- Mybatis逆向工程配置（或者手动编写mapper映射文件和bean文件）
配置文件：MybatisGeneratorConfig.xml
<?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 -->
<jdbcConnection driverClass="com.mysql.cj.jdbc.Driver"
connectionURL="jdbc:mysql://localhost:3306/joey_crud" userId="root"
password="123456">
</jdbcConnection>
<javaTypeResolver>
<property name="forceBigDecimals" value="false" />
</javaTypeResolver>
<!-- 指定javaBean生成的位置 -->
<javaModelGenerator targetPackage="com.joey.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dao接口生成的位置，mapper接口 -->
<javaClientGenerator type="XMLMAPPER"
targetPackage="com.joey.dao" targetProject=".\src\main\java">
<property name="enableSubPackages" value="true" />
</javaClientGenerator>
<!-- table指定每个表的生成策略 -->
<table tableName="emp" domainObjectName="Employee"></table>
<table tableName="dept" domainObjectName="Department"></table>
</context>
</generatorConfiguration>e tableName="dept" domainObjectName="Department"></table>
</context>
</generatorConfiguration> 启动文件：MybatisGenerator.java
package com.joey.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 MybatisGenerator {
public static void main(String[] args) throws Exception {
List<String> warnings = new ArrayList<String>();
boolean overwrite = true;
File configFile = new File("MybatisGeneratorConfig.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);
}
}- 编写Mapper测试文件，测试系统配置是否正确
package com.joey.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.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import com.joey.bean.Employee;
import com.joey.dao.DepartmentMapper;
import com.joey.dao.EmployeeMapper;
/**
* 测试dao层的工作
* @author joey
*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组件
*1、导入SpringTest模块
*2、@ContextConfiguration指定Spring配置文件的位置
*3、直接autowired要使用的组件即可
*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"classpath:applicationContext.xml"})
public class MapperTest {
@Autowired
DepartmentMapper departmentMapper;
@Autowired
EmployeeMapper employeeMapper;
@Autowired
SqlSession sqlSession;
@Test
public void testCRUD(){
//1、创建SpringIOC容器
ApplicationContext ioc = new ClassPathXmlApplicationContext("applicationContext.xml");
//2、从容器中获取mapper
DepartmentMapper bean = ioc.getBean(DepartmentMapper.class);
//能正常执行输出类似 org.apache.ibatis.binding.MapperProxy@5cde6747 说明配置正确
System.out.println(bean);
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、生成员工数据，测试员工插入
employeeMapper.insertSelective(new Employee(null, "Jerry", "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(){
// employeeMapper.insertSelective(new Employee(null, , "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+"@joey.com", 1));
}
System.out.println("批量完成");
}
}- 编写Service类
package com.joey.service;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.joey.bean.Employee;
import com.joey.dao.EmployeeMapper;
@Service
public class EmployeeService {
@Autowired
EmployeeMapper employeeMapper;
/**
* 查询所有员工
* @return
*/
public List<Employee> getAll() {
// TODO Auto-generated method stub
return employeeMapper.selectByExample(null);
}
}- 编写Controller类
package com.joey.controller;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.joey.bean.Employee;
import com.joey.service.EmployeeService;
/**
* 处理员工CRUD请求
*/
@Controller
public class EmployeeController {
@Autowired
EmployeeService employeeService;
/**
* 查询员工数据（分页查询）
*
* @return
*/
@RequestMapping("/emps")
public String getEmps(
@RequestParam(value = "pn", defaultValue = "1") Integer pn,
Model model) {
// 这不是一个分页查询；
// 引入PageHelper分页插件
// 在查询之前只需要调用，传入页码，以及每页的大小
PageHelper.startPage(pn, 5);
// startPage后面紧跟的这个查询就是一个分页查询
List<Employee> emps = employeeService.getAll();
// 使用pageInfo包装查询后的结果，只需要将pageInfo交给页面就行了。
// 封装了详细的分页信息,包括有我们查询出来的数据，传入连续显示的页数
PageInfo<Employee> page = new PageInfo<Employee>(emps, 5);
model.addAttribute("pageInfo", page);
return "list";
}
}- 编写SpringMVC前端视图返回数据测试类
package com.joey.test;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.mock.web.MockHttpServletRequest;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.web.WebAppConfiguration;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.MvcResult;
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;
import org.springframework.web.context.WebApplicationContext;
import com.joey.bean.Employee;
import com.github.pagehelper.PageInfo;
/**
* 使用Spring测试模块提供的测试请求功能，测试curd请求的正确性
* Spring4测试的时候，需要servlet3.0的支持
* @author joey
*
*/
@RunWith(SpringJUnit4ClassRunner.class)
@WebAppConfiguration
@ContextConfiguration(locations = { "classpath:applicationContext.xml",
"file:src/main/resources/SpringMvcConfig.xml" })
public class MvcTest {
// 传入Springmvc的ioc
@Autowired
WebApplicationContext context;
// 虚拟mvc请求，获取到处理结果。
MockMvc mockMvc;
@Before
public void initMokcMvc() {
mockMvc = MockMvcBuilders.webAppContextSetup(context).build();
}
@Test
public void testPage() throws Exception {
//模拟请求拿到返回值
MvcResult result = mockMvc.perform(MockMvcRequestBuilders.get("/emps").param("pn", "1"))
.andReturn();
//请求成功以后，请求域中会有pageInfo；我们可以取出pageInfo进行验证
MockHttpServletRequest request = result.getRequest();
PageInfo pi = (PageInfo) request.getAttribute("pageInfo");
System.out.println("当前页码："+pi.getPageNum());
System.out.println("总页码："+pi.getPages());
System.out.println("总记录数："+pi.getTotal());
System.out.println("在页面需要连续显示的页码");
int[] nums = pi.getNavigatepageNums();
for (int i : nums) {
System.out.print(" "+i);
}
System.out.println();
//获取员工数据
List<Employee> list = pi.getList();
for (Employee employee : list) {
System.out.println("ID："+employee.getId()+"==>Name:"+employee.getName());
}
}
} 输出：
当前页码：1 总页码：69 总记录数：1021 在页面需要连续显示的页码 1 2 3 4 5 ID：1022==>Name:ada290 ID：1023==>Name:ca5da1 ID：1024==>Name:86ce02 ID：1025==>Name:ea8f73 ID：1026==>Name:91c6c4
- 就可以开始CRUD搬砖之路
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