SSM整合学习笔记

没有腰的嘟嘟嘟

于 2022-05-06 08:23:23 发布

阅读量131

点赞数

文章标签：学习 java xml

本文链接：https://blog.youkuaiyun.com/caijigskg/article/details/124545595

版权

SSM整合的步骤：

1.新建数据库，新建表

新建ssmuser数据库，新建user表

2.新建Maven项目，选择webapp模板

3.添加缺少目录，test，javar，resources等

4.修改pom.xml文件，添加依赖

<?xml version="1.0" encoding="UTF-8"?>

<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.bjpowernode</groupId>
  <artifactId>springmvc_06_ssm</artifactId>
  <version>1.0</version>
  <packaging>war</packaging>

  <!--集中定义依赖版本号-->
  <properties>
    <!--单元测试依赖-->
    <junit.version>4.12</junit.version>
    <!--spring相关依赖-->
    <spring.version>5.2.5.RELEASE</spring.version>
    <!--mybatis相关依赖-->
    <mybatis.version>3.5.1</mybatis.version>
    <!--mybatis与spring的相关依赖-->
    <mybatis.spring.version>1.3.1</mybatis.spring.version>
    <!--mybatis支持的分页插件-->
    <mybatis.paginator.version>1.2.15</mybatis.paginator.version>
    <!--mysql依赖-->
    <mysql.version>5.1.32</mysql.version>
    <!--slf4j日志依赖-->
    <slf4j.version>1.6.4</slf4j.version>
    <!--阿里的数据连接池-->
    <druid.version>1.1.12</druid.version>
    <!--分页插件的依赖-->
    <pagehelper.version>5.1.2</pagehelper.version>
    <!--JSTL的依赖（jsp的标准标签库）-->
    <jstl.version>1.2</jstl.version>
    <!--servlet的依赖-->
    <servlet-api.version>3.0.1</servlet-api.version>
    <!--jsp的依赖-->
    <jsp-api.version>2.0</jsp-api.version>
    <!--jackson的依赖，springmvc框架默认进行JSON转换的依赖工具-->
    <jackson.version>2.9.6</jackson.version>
  </properties>

  <dependencies>
    <!--spring-->
    <dependency>
    <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <!--事务管理aspects-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aspects</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <!--邮件处理依赖-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jms</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <!--上下文关联依赖-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context-support</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <!--单元测试-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>5.2.5.RELEASE</version>
    </dependency>
    <!--Mybatis-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>${mybatis.version}</version>
    </dependency>
    <!--mybatis和spring整合依赖-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>${mybatis.spring.version}</version>
    </dependency>
    <!--mybatis支持分页插件，插件-->
    <dependency>
      <groupId>com.github.miemiedev</groupId>
      <artifactId>mybatis-paginator</artifactId>
      <version>${mybatis.paginator.version}</version>
    </dependency>
    <!--分页插件的依赖-->
    <dependency>
      <groupId>com.github.pagehelper</groupId>
      <artifactId>pagehelper</artifactId>
      <version>${pagehelper.version}</version>
    </dependency>
    <!--Mysql-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>${mysql.version}</version>
    </dependency>
    <!--阿里连接池-->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>${druid.version}</version>
    </dependency>
    <!--junit-->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>${junit.version}</version>
      <scope>test</scope>
    </dependency>

    <!--JSP-->
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>${jstl.version}</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.1.0</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jsp-api</artifactId>
      <version>${jsp-api.version}</version>
    </dependency>

    <!--Jackson Json处理工具包-->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>${jackson.version}</version>
    </dependency>

    <!--文件异步上传使用的依赖-->
    <!--<dependency>
      <groupId>commons-io</groupId>
      <artifactId>commons-io</artifactId>
      <version>2.4</version>
    </dependency>
    <dependency>
      <groupId>commons-fileupload</groupId>
      <artifactId>commons-fileupload</artifactId>
      <version>1.3.1</version>
    </dependency>-->
  </dependencies>
  <!--插件配置-->
  <build>
    <plugins>
      <!--配置JDK编译的版本和项目部署到客户端的环境中JDK的版本和编码-->
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <configuration>
          <source>1.8</source>
          <target>1.8</target>
          <encoding>UTF-8</encoding>
        </configuration>
      </plugin>
    </plugins>
    <!--识别所有的配置文件-->
    <resources>
      <resource>
        <directory>src/main/java</directory>
        <includes>
          <include>**/*.properties</include>
          <include>**/*.xml</include>
        </includes>
        <filtering>false</filtering>
      </resource>
      <resource>
        <directory>src/main/resources</directory>
        <includes>
          <include>**/*.properties</include>
          <include>**/*.xml</include>
        </includes>
        <filtering>false</filtering>
      </resource>
    </resources>
  </build>
</project>

5.添加jdbc.properties属性文件

6.在resources目录中添加SqlMapConfig.xml文件

7.在resources添加applicationContext_mapper.xml文件（数据访问层的核心配置文件）

<?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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">

    <!--读取连接数据库配置文件-->
    <context:property-placeholder location="classpath:jdbc.properties"></context:property-placeholder>
    <!--配置数据源-->
    <bean id="MyDataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="${jdbc.driverClassName}"></property>
        <property name="url" value="${jdbc.url}"></property>
        <property name="username" value="${jdbc.username}"></property>
        <property name="password" value="${jdbc.password}"></property>

    </bean>
    <!--配置SqlSessionFactoryBean-->
    <bean class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--配置数据源-->
        <property name="dataSource" ref="MyDataSource"></property>
        <!--配置SqlMapConfig.xml核心配置-->
        <property name="configLocation" value="classpath:sqlMapConfig.xml"></property>
        <!--注册实体类-->
        <property name="typeAliasesPackage" value="com.bjpowernode.pojo"></property>
    </bean>
    <!--注册mapper.xml文件-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.bjpowernode.mapper"></property>
    </bean>
</beans>

8.在resources目录中添加applicationContext_service.xml文件（业务逻辑层的核心配置文件）

<?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:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop https://www.springframework.org/schema/aop/spring-aop.xsd">

    <!--添加包扫描-->
    <context:component-scan base-package="com.bjpowernode.service.impl"></context:component-scan>
    <!--添加事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!--配置数据源-->
        <property name="dataSource" ref="MyDataSource"></property>
    </bean>
    <!--配置事务切面-->
    <tx:advice id="myadvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="*select*" read-only="true"/>
            <tx:method name="*find*" read-only="true"/>
            <tx:method name="*serach*" read-only="true"/>
            <tx:method name="*get*" read-only="true"/>
            <tx:method name="*insert*" propagation="REQUIRED"/>
            <tx:method name="*add*" propagation="REQUIRED"/>
            <tx:method name="*save*" propagation="REQUIRED"/>
            <tx:method name="*set*" propagation="REQUIRED"/>
            <tx:method name="*update*" propagation="REQUIRED"/>
            <tx:method name="*change*" propagation="REQUIRED"/>
            <tx:method name="*modify*" propagation="REQUIRED"/>
            <tx:method name="*delete*" propagation="REQUIRED"/>
            <tx:method name="*drop*" propagation="REQUIRED"/>
            <tx:method name="*remove*" propagation="REQUIRED"/>
            <tx:method name="*clear*" propagation="REQUIRED"/>
            <tx:method name="*" propagation="SUPPORTS"/>
        </tx:attributes>
    </tx:advice>
    <!--配置切入点+绑定-->
    <aop:config>
        <aop:pointcut id="mycut" expression="execution(* com.bjpowernode.service.impl.*.*(..))"></aop:pointcut>
        <aop:advisor advice-ref="myadvice" pointcut-ref="mycut"></aop:advisor>
    </aop:config>


</beans>

9.在resources目录中添加springmvc.xml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/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--添加包扫描-->
    <context:component-scan base-package="com.bjpowernode.controller"></context:component-scan>
    <!--添加注解驱动-->
    <mvc:annotation-driven></mvc:annotation-driven>
    <!--因为本项目全部是ajax请求，不需要配置视图解析器-->
</beans>

10.删除web.xml文件，因为版本太低，然后新建web，设置中文编码，并注册springmvc框架

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">
    <!--配置中文编码-->
    <filter>
        <filter-name>encode</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <!--
          private java.lang.String encoding;
          private boolean forceRequestEncoding;
          private boolean forceResponseEncoding;
        -->
        <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>encode</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    <!--注册spring框架，，目的是启动spring容器-->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!--注册resources目录下applicationContext_mapper.xml和applicationContext_service.xml-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext_*.xml</param-value>
    </context-param>
</web-app>

11.新建User实体类

在pojo目录下新建user实体类

package com.bjpowernode.pojo;

public class User {
    private String userId;
    private String cardType;
    private String cardNo;
    private String userName;
    private String userSex;
    private String userAge;
    private String userRole;

    public User() {
    }

    public User(String userId,
                String cardType,
                String cardNo,
                String userName,
                String userSex,
                String userAge,
                String userRole) {
        this.userId = userId;
        this.cardType = cardType;
        this.cardNo = cardNo;
        this.userName = userName;
        this.userSex = userSex;
        this.userAge = userAge;
        this.userRole = userRole;
    }

    @Override
    public String toString() {
        return "User{" +
                "userId='" + userId + '\'' +
                ", cardType='" + cardType + '\'' +
                ", cardNo='" + cardNo + '\'' +
                ", userName='" + userName + '\'' +
                ", userSex='" + userSex + '\'' +
                ", userAge='" + userAge + '\'' +
                ", userRole='" + userRole + '\'' +
                '}';
    }

    public String getUserId() {
        return userId;
    }

    public void setUserId(String userId) {
        this.userId = userId;
    }

    public String getCardType() {
        return cardType;
    }

    public void setCardType(String cardType) {
        this.cardType = cardType;
    }

    public String getCardNo() {
        return cardNo;
    }

    public void setCardNo(String cardNo) {
        this.cardNo = cardNo;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getUserSex() {
        return userSex;
    }

    public void setUserSex(String userSex) {
        this.userSex = userSex;
    }

    public String getUserAge() {
        return userAge;
    }

    public void setUserAge(String userAge) {
        this.userAge = userAge;
    }

    public String getUserRole() {
        return userRole;
    }

    public void setUserRole(String userRole) {
        this.userRole = userRole;
    }
}

12.在mapper目录下新建UserMapper.java接口

package com.bjpowernode.mapper;

import com.bjpowernode.pojo.User;
import org.apache.ibatis.annotations.Param;

import java.util.List;

public interface UserMapper {
    List<User> selectUserPage(
            @Param("userName")
            String userName,
            @Param("userSex")
            String userSex,
            @Param("startRow")//算好的起始行
            int startRow);
    //增加
    int insert(User user);
    //根据用户id删除
    int delete(String userId);
    //获取表中所有数据来显示页数，有添加查询，或无条件
    int getRowCount(@Param("userName") String userName,@Param("userSex") String userSex);
    //修改用户
    int updateUserById(User user);
}

13.在mapper目录下新建UserMapper.xml实现增删改查所有功能

<?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.bjpowernode.mapper.UserMapper">
   <!--完成实体类与表中列名的映射
    private String userId;
    private String cardType;
    private String cardNo;
    private String userName;
    private String userSex;
    private String userAge;
    private String userRole;

   -->
    <resultMap id="usermap" type="user">
        <id property="userId" column="user_id"></id>
        <result property="cardType" column="card_type"></result>
        <result property="cardNo" column="card_no"></result>
        <result property="userName" column="user_name"></result>
        <result property="userSex" column="user_sex"></result>
        <result property="userAge" column="user_age"></result>
        <result property="userRole" column="user_role"></result>
    </resultMap>
    <!--定义全部列名-->
    <sql id="sqlli">
       user_id,card_type,card_no,user_name,user_sex,user_age,user_role
    </sql>

    
    
    <!--分页查询-->
    <!--
      List<User> selectUserPage(
            @Param("userName")
            String userName,
            @Param("userSex")
            String userSex,
            @Param("startRow")//算好的起始行
            int startRow);
    -->
    <select id="selectUserPage" resultMap="usermap">
        select <include refid="sqlli"></include>
        from user
        <where>
            <if test="userName != null and userName != ''">
                and user_name like concat('%',#{user_name},'%')
            </if>
            <if test="userSex != null and userSex != ''">
                and user_sex = #{userSex}
            </if>
        </where>
        limit #{startRow},5
    </select>
    
    
    
    <!--添加-->
    <!--
    //增加
    int insert(User user);
    -->
    <insert id="insert">
        insert into user value (#{userId},#{cardType},#{cardNo},#{userName},#{userSex},#{userAge},#{userRole})
    </insert>

    
    
    <!--删除
    //根据用户id删除
    int delete(String userId);
    -->
    <delete id="delete" parameterType="String" >
        delete from user where user_id = #{userId}
    </delete>
    
    
    <!--
     //获取表中所有数据来显示页数，有添加查询，或无条件
    int getRowCount(
    @Param("userName")
    String userName,
    @Param("userSex")
    String userSex);
    -->
    <select id="getRowCount" resultType="int">
        select count(*) from user
        <where>
            <if test="userName != null and userName != ''">
                and user_name like concat('%',#{userName},'%')
            </if>
            <if test="userSex != null and userSex != ''">
                and user_sex = #{userSex}
            </if>
        </where>
    </select>
    <!--
    //修改用户
     private String userId;
    private String cardType;
    private String cardNo;
    private String userName;
    private String userSex;
    private String userAge;
    private String userRole;
    -->
    <update id="updateUserById">
        update user set card_type=#{cardType},card_no=#{cardNo},user_name=#{userName},
        user_sex=#{userSex},user_age=#{userAge},user_role=#{userRole} where user_id=#{userId}
    </update>
</mapper>

14.新建service接口和实现类

在service目录下创建UserService接口

package com.bjpowernode.service;

import com.bjpowernode.pojo.User;

import java.util.List;

/**
 * 业务逻辑层
 */
public interface UserService {
    //    查询
    List<User> selectUserPage(String userName,String userSex,int startRow);
    //   添加
    int createUser(User user);
    //   删除
    int deleteUserById(String userId);
    //   计算表数据总行数
    int getRowCount(String userName,String userSex);
    //修改用户
    int updateUserById(User user);
}

在service-->impl目录下新建UserService的实现类

package com.bjpowernode.service.impl;

import com.bjpowernode.mapper.UserMapper;
import com.bjpowernode.pojo.User;
import com.bjpowernode.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * 业务逻辑层
 */
@Service
public class UserServiceImpl implements UserService {
    //    切记切记: 一定要有数据访问层的对象
    @Autowired
    UserMapper userMapper;

    @Override
    public List<User> selectUserPage(String userName, String userSex, int startRow) {
        return userMapper.selectUserPage(userName,userSex,startRow);
    }

    @Override
    public int createUser(User user) {
        return userMapper.insert(user);
    }

    @Override
    public int deleteUserById(String userId) {
        return userMapper.delete(userId);
    }

    @Override
    public int getRowCount(String userName, String userSex) {
        return userMapper.getRowCount(userName,userSex);
    }

    @Override
    public int updateUserById(User user) {

        return userMapper.updateUserById(user);
    }
}

15.新建测试类，完成所有功能的测试

在Test-->java目录下新建MyTest测试类

package test;


import com.bjpowernode.pojo.User;
import com.bjpowernode.service.UserService;
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;

@RunWith(SpringJUnit4ClassRunner.class)//相当于启动spring的容器
@ContextConfiguration(locations = {"classpath:applicationContext_mapper.xml","classpath:applicationContext_service.xml"})
public class MyTest {
    @Autowired
    UserService userService;

    @Test
    public void testselectUserPage(){
        List<User> userList = userService.selectUserPage(null,"男",0);
        userList.forEach(user -> System.out.println(user));
    }
    @Test
    public void testdeleteUser(){
       int num = userService.deleteUserById("11111");
        System.out.println("=========>"+num);
    }
    @Test
    public void testinterUser(){
        User u = new User("111116","酒神证","666666","东北酒王","男","45","职业酒蒙子");
        int num = userService.createUser(u);
        System.out.println("=========>"+num);
    }
    @Test
    public void testgetRowCount(){

        int num = userService.getRowCount("张良","男");
        System.out.println("=========>"+num);
    }
    @Test
    public void updateuserTest(){
        User u = new User("1651743627430","哈哈","hh","jj","kk","ll","hh");
       int num = userService.updateUserById(u);
        System.out.println(num);
    }

}

16.新建控制器，完成所有功能

在controller目录下新建UserController控制器类

package com.bjpowernode.controller;

import com.bjpowernode.pojo.User;
import com.bjpowernode.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;
@CrossOrigin //在服务器端支持跨域请求
@RestController //如果类中方法全是ajax请求就用此注解，方法上的@ResponsBody可以不写
@RequestMapping("/user")
public class UserContorller {
    @Autowired
    UserService userService;

    public static final int PAGE_SIZE = 5;

    @RequestMapping("/selectUserPage")
    public List<User> selectUserPage(String userName, String userSex, Integer page){
        //根据页码计算起始行
        int startRow = 0;
        if(page != null){
            startRow = (page - 1) * PAGE_SIZE;
        }
        return userService.selectUserPage(userName,userSex,startRow);
    }
    //计算表中数据行数
    @RequestMapping("/getRowCount")
    public int getRowCount(String userName,String userSex){
    return userService.getRowCount(userName,userSex);
    }
    //根据用户id删除用户
    @RequestMapping("/deleteUserById")
    public int deleteUserById(String userId){
    return userService.deleteUserById(userId);
    }
    //添加用户
    @RequestMapping("/createUser")
    public int createUser(User user){
        //提供一个用户id值
        String userId = System.currentTimeMillis()+"";
        user.setUserId(userId);
        return userService.createUser(user);
    }
    //修改用户
    @RequestMapping("/updateUserById")
    public int updateUserById(User user){
        return userService.updateUserById(user);
    }

}

17.浏览器测试功能