bootstrap+Ajax+SSM(maven搭建）表单增删改查

SSM框架实战

最新推荐文章于 2023-01-03 15:45:22 发布

原创最新推荐文章于 2023-01-03 15:45:22 发布 · 719 阅读

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CC 4.0 BY-SA版权

文章标签：

#Java #jvm #spring #架构师 #程序员

软件架构

IDE：IDEA
数据库：mysql
jdk:1.8
tomcat:9
后端：springmvc，mybatis
前端：bootstrap

效果图：

bootstrap+Ajax+SSM(maven搭建）表单增删改查

项目结构：

bootstrap+Ajax+SSM(maven搭建）表单增删改查

pom.xml

<?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.ssm.demo</groupId>
 <artifactId>ssm-demo</artifactId>
 <version>1.0-SNAPSHOT</version>
 <packaging>war</packaging>
 <name>ssm-demo Maven Webapp</name>
 <!-- FIXME change it to the project's website -->
 <url>http://www.example.com</url>
 <properties>
 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 <maven.compiler.source>1.7</maven.compiler.source>
 <maven.compiler.target>1.7</maven.compiler.target>
 <org.springframework.version>4.2.4.RELEASE</org.springframework.version>
 <java.version>1.8</java.version>
 <mybatis.version>3.2.5</mybatis.version>
 <mybatis-spring.version>1.2.2</mybatis-spring.version>
 <jdbc.driver.version>5.1.38</jdbc.driver.version>
 <aspectj.version>1.7.4</aspectj.version>
 <javax.servlet-api.version>3.1.0</javax.servlet-api.version>
 <jsp-api.version>2.2</jsp-api.version>
 <jstl.version>1.2</jstl.version>
 <com.alibaba.druid.version>1.0.25</com.alibaba.druid.version>
 <com.google.gson.version>2.7</com.google.gson.version>
 </properties>
 <dependencies>
 <dependency>
 <groupId>junit</groupId>
 <artifactId>junit</artifactId>
 <version>4.11</version>
 <scope>test</scope>
 </dependency>
 <!-- 3.Spring -->
 <!-- 1)Spring核心 -->
 <dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-core</artifactId>
 <version>${org.springframework.version}</version>
 </dependency>
 <dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-beans</artifactId>
 <version>${org.springframework.version}</version>
 </dependency>
 <dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-context</artifactId>
 <version>${org.springframework.version}</version>
 </dependency>
 <!-- 2)Spring DAO层 -->
 <dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-jdbc</artifactId>
 <version>${org.springframework.version}</version>
 </dependency>
 <dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-tx</artifactId>
 <version>${org.springframework.version}</version>
 </dependency>
 <!-- 3)Spring web -->
 <dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-web</artifactId>
 <version>${org.springframework.version}</version>
 </dependency>
 <dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-webmvc</artifactId>
 <version>${org.springframework.version}</version>
 </dependency>
 <!-- 4)Spring test -->
 <dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-test</artifactId>
 <version>${org.springframework.version}</version>
 </dependency>
 <!-- Map工具类 -->
 <dependency>
 <groupId>commons-collections</groupId>
 <artifactId>commons-collections</artifactId>
 <version>3.2.2</version>
 </dependency>
 <!--文件上传工具-->
 <dependency>
 <groupId>commons-fileupload</groupId>
 <artifactId>commons-fileupload</artifactId>
 <version>1.3.2</version>
 </dependency>
 <dependency>
 <groupId>commons-io</groupId>
 <artifactId>commons-io</artifactId>
 <version>2.5</version>
 </dependency>
 <!-- Begin: 数据库依赖包 -->
 <dependency>
 <groupId>mysql</groupId>
 <artifactId>mysql-connector-java</artifactId>
 <version>${jdbc.driver.version}</version>
 <scope>runtime</scope>
 </dependency>
 <!-- End: 数据库依赖包 -->
 <!--druid==>阿里巴巴数据库连接池-->
 <dependency>
 <groupId>com.alibaba</groupId>
 <artifactId>druid</artifactId>
 <version>${com.alibaba.druid.version}</version>
 </dependency>
 <!--json-->
 <dependency>
 <groupId>com.fasterxml.jackson.core</groupId>
 <artifactId>jackson-core</artifactId>
 <version>2.5.2</version>
 </dependency>
 <dependency>
 <groupId>com.fasterxml.jackson.core</groupId>
 <artifactId>jackson-databind</artifactId>
 <version>2.5.2</version>
 </dependency>
 <!-- Begin: mybatis依赖 -->
 <dependency>
 <groupId>org.mybatis</groupId>
 <artifactId>mybatis</artifactId>
 <version>${mybatis.version}</version>
 </dependency>
 <dependency>
 <groupId>org.mybatis</groupId>
 <artifactId>mybatis-spring</artifactId>
 <version>${mybatis-spring.version}</version>
 </dependency>
 <!-- End: mybatis依赖 -->
 <!--引入分页插件-->
 <dependency>
 <groupId>com.github.pagehelper</groupId>
 <artifactId>pagehelper</artifactId>
 <version>5.1.2</version>
 </dependency>
 <!-- Begin: aspectj相关jar包-->
 <dependency>
 <groupId>org.aspectj</groupId>
 <artifactId>aspectjrt</artifactId>
 <version>${aspectj.version}</version>
 </dependency>
 <dependency>
 <groupId>org.aspectj</groupId>
 <artifactId>aspectjweaver</artifactId>
 <version>${aspectj.version}</version>
 </dependency>
 <!-- End: aspectj相关jar包-->
 <!-- Begin: Servlet相关依赖包 -->
 <dependency>
 <groupId>javax.servlet</groupId>
 <artifactId>javax.servlet-api</artifactId>
 <version>${javax.servlet-api.version}</version>
 <scope>provided</scope>
 </dependency>
 <dependency>
 <groupId>javax.servlet.jsp</groupId>
 <artifactId>jsp-api</artifactId>
 <version>${jsp-api.version}</version>
 </dependency>
 <!-- 2.Servlet web -->
 <dependency>
 <groupId>taglibs</groupId>
 <artifactId>standard</artifactId>
 <version>1.1.2</version>
 </dependency>
 <dependency>
 <groupId>jstl</groupId>
 <artifactId>jstl</artifactId>
 <version>1.2</version>
 </dependency>
 <!-- End: Servlet相关依赖包 -->
 <!--json数据格式-->
 <dependency>
 <groupId>com.fasterxml.jackson.core</groupId>
 <artifactId>jackson-core</artifactId>
 <version>2.8.5</version>
 </dependency>
 <dependency>
 <groupId>com.fasterxml.jackson.core</groupId>
 <artifactId>jackson-annotations</artifactId>
 <version>2.8.5</version>
 </dependency>
 <dependency>
 <groupId>com.fasterxml.jackson.core</groupId>
 <artifactId>jackson-databind</artifactId>
 <version>2.8.5</version>
 </dependency>
 <!--excle导入导出-->
 <!--<dependency>
 <groupId>com.alibaba</groupId>
 <artifactId>easyexcel</artifactId>
 <version>1.0.2</version>
 </dependency>-->
 </dependencies>
 <build>
 <finalName>ssm-demo</finalName>
 <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
 <plugins>
 <plugin>
 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-compiler-plugin</artifactId>
 <version>3.6.1</version>
 <configuration>
 <!-- <source>1.8</source> 源代码使用的开发版本 <target>1.8</target> 需要生成的目标class文件的编译版本 -->
 <encoding>utf-8</encoding>
 </configuration>
 </plugin>
 </plugins>
 </pluginManagement>
 </build>
</project>

首先是配置文件，applicationContext.xml,springmvc.xml,mybatis-config.xml,web.xml

applicationContext

<?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:aop="http://www.springframework.org/schema/aop"
 xmlns:tx="http://www.springframework.org/schema/tx"
 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/tx 
 http://www.springframework.org/schema/tx/spring-tx.xsd 
 http://www.springframework.org/schema/aop 
 http://www.springframework.org/schema/aop/spring-aop.xsd
 http://www.springframework.org/schema/context 
 http://www.springframework.org/schema/context/spring-context.xsd">
 <!-- 自动扫描 -->
 <context:component-scan base-package="com.ssm.dao"/>
 <context:component-scan base-package="com.ssm.service"/>
 <!--配置数据源-->
 <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
 <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
 <property name="url" value="jdbc:mysql://localhost:3306/ssm-demo"/>
 <!-- 改为你的地址即可 -->
 <property name="username" value="root"/>
 <property name="password" value="1234"/>
 </bean>
 <!--配置SessionFactoryBean-->
 <bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
 <property name="dataSource" ref="dataSource"></property>
 <property name="mapperLocations" value="classpath:mappers/*.xml"></property>
 <property name="configLocation" value="classpath:mybatis-config.xml"></property>
 </bean>
 <!--Mapper接口扫描：DAO接口所在包名，Spring会自动查找其下的类-->
 <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
 <property name="basePackage" value="com.ssm.dao"></property>
 <property name="sqlSessionFactoryBeanName" value="sqlSessionFactoryBean"></property>
 </bean>
 <!--事务管理transaction manager-->
 <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
 <property name="dataSource" ref="dataSource"></property>
 </bean>
 <!--开启注解事务-->
 <tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven>
</beans>

springmvc.xml

<?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-3.0.xsd
 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
 http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
 <!-- 使用注解的包，包括子集 -->
 <context:component-scan base-package="com.ssm.controller"/>
 <!--两个标配-->
 <!-- 解决映射器处理器和映射器适配器 -->
 <mvc:annotation-driven/>
 <!-- 处理静态资源 -->
 <mvc:default-servlet-handler/>
 <!-- 视图解析器 这里可以不用配置，因为是通过ajax异步调用，本人习惯配置上，根据需要更改-->
 <bean id="viewResolver"
 class="org.springframework.web.servlet.view.InternalResourceViewResolver">
 <property name="prefix" value="/WEB-INF/jsp/"/>
 <property name="suffix" value=".jsp"></property>
 </bean>
</beans>

mybatis-config.xml 为了配置分页插件

<?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>
 <!-- Globally enables or disables any caches configured in any mapper under this configuration -->
 <setting name="cacheEnabled" value="false"/>
 <!-- Sets the number of seconds the driver will wait for a response from the database -->
 <setting name="defaultStatementTimeout" value="5"/>
 <!-- Enables automatic mapping from classic database column names A_COLUMN to camel case classic Java property names aColumn -->
 <setting name="mapUnderscoreToCamelCase" value="true"/>
 <!-- Allows JDBC support for generated keys. A compatible driver is required.
 This setting forces generated keys to be used if set to true,
 as some drivers deny compatibility but still work -->
 <setting name="useGeneratedKeys" value="true"/>
 </settings>
 <!-- Continue editing here -->
 <typeAliases>
 <package name="com.ssm.entity"/>
 </typeAliases>
 <!-- 引入 pageHelper插件 -->
 <plugins>
 <plugin interceptor="com.github.pagehelper.PageInterceptor">
 <!--reasonable：分页合理化参数，默认值为false。
 当该参数设置为 true 时，pageNum<=0 时会查询第一页，
 pageNum>pages（超过总数时），会查询最后一页。
 默认false 时，直接根据参数进行查询。-->
 <property name="reasonable" value="true"/>
 </plugin>
 </plugins>
</configuration>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns:web="http://java.sun.com/xml/ns/javaee" 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_3_0.xsd"
 id="WebApp_ID" version="3.0">
 <display-name>Archetype Created Web Application</display-name>
 <!--Start 欢迎页-->
 <welcome-file-list>
 <welcome-file>index.html</welcome-file>
 </welcome-file-list>
 <!--End 欢迎页-->
 <!--Start spring监听器 -->
 <listener>
 <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
 </listener>
 <!--End Start spring监听器 -->
 <context-param>
 <param-name>contextConfigLocation</param-name>
 <param-value>classpath:applicationContext.xml</param-value>
 </context-param>
 <!--Start 编码过滤器 解决乱码问题-->
 <filter>
 <filter-name>encodingFilter</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>
 </filter>
 <filter-mapping>
 <filter-name>encodingFilter</filter-name>
 <url-pattern>/*</url-pattern>
 </filter-mapping>
 <!--End 编码过滤器 解决乱码问题-->
 <!--Start spring mvc servlet-->
 <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>
 <load-on-startup>1</load-on-startup>
 </servlet>
 <servlet-mapping>
 <servlet-name>springmvc</servlet-name>
 <url-pattern>/</url-pattern>
 </servlet-mapping>
 <!--End servlet-mapping -->
 <!--druid ==> WEB方式监控配置-->
 <servlet>
 <servlet-name>DruidStatView</servlet-name>
 <servlet-class>com.alibaba.druid.support.http.StatViewServlet</servlet-class>
 </servlet>
 <servlet-mapping>
 <servlet-name>DruidStatView</servlet-name>
 <url-pattern>/druid/*</url-pattern>
 </servlet-mapping>
 <filter>
 <filter-name>druidWebStatFilter</filter-name>
 <filter-class>com.alibaba.druid.support.http.WebStatFilter</filter-class>
 <init-param>
 <param-name>exclusions</param-name>
 <param-value>/public/*,*.js,*.css,/druid*,*.jsp,*.swf</param-value>
 </init-param>
 <init-param>
 <param-name>principalSessionName</param-name>
 <param-value>sessionInfo</param-value>
 </init-param>
 <init-param>
 <param-name>profileEnable</param-name>
 <param-value>true</param-value>
 </init-param>
 </filter>
 <filter-mapping>
 <filter-name>druidWebStatFilter</filter-name>
 <url-pattern>/*</url-pattern>
 </filter-mapping>
</web-app>

实体类

User

package com.ssm.entity;
import com.alibaba.excel.metadata.BaseRowModel;
import java.io.Serializable;
/**
 * Created by jiangfeixiang on 2018/9/4
 * @author smfx1314
 *
 */
public class User extends BaseRowModel implements Serializable {
 private Integer id;
 
 private String username;
 private String sex;
 private String city;
 private Integer age;
 public Integer getId() {
 return id;
 }
 public void setId(Integer id) {
 this.id = id;
 }
 public String getUsername() {
 return username;
 }
 public void setUsername(String username) {
 this.username = username;
 }
 public String getSex() {
 return sex;
 }
 public void setSex(String sex) {
 this.sex = sex;
 }
 public String getCity() {
 return city;
 }
 public void setCity(String city) {
 this.city = city;
 }
 public Integer getAge() {
 return age;
 }
 public void setAge(Integer age) {
 this.age = age;
 }
 @Override
 public String toString() {
 return "User{" +
 "id=" + id +
 ", username='" + username + ''' +
 ", sex='" + sex + ''' +
 ", city='" + city + ''' +
 ", age=" + age +
 '}';
 }
}

dao层

UserMapper接口

package com.ssm.dao;
import com.ssm.entity.User;
import org.springframework.stereotype.Repository;
import java.util.List;
/**
 * Created by jiangfeixiang on 2018/9/4
 * @author smfx1314
 */
@Repository
public interface UserMapper {
 /**
 * 查询所有用户
 * @return
 */
 List<User> getAllUser();
 /**
 *
 * @param username
 * @return
 */
 User checkUserName(String username);
 /**
 * 保存用户
 * @param user
 * @return
 */
 int saveUser(User user);
 /**
 * 根据id删除用户
 * @param id
 * @return
 */
 int deleteUser(Integer id);
 /**
 * 修改用户
 * @param user
 */
 void updateUser(User user);
}

对应的UserMapper.xml

<?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.ssm.dao.UserMapper" >
 <!--<resultMap id="BaseResultMap" type="User" >
 <id column="id" property="id" jdbcType="INTEGER" />
 <result column="username" property="username" jdbcType="VARCHAR" />
 <result column="password" property="password" jdbcType="VARCHAR" />
 </resultMap>-->
 <!--查询所有用户-->
 <select id="getAllUser" resultType="User">
 SELECT * FROM USER
 </select>
 <!--根据用户名查询，校验用户名-->
 <select id="checkUserName" resultType="User" parameterType="String">
 SELECT * FROM USER WHERE username=#{username}
 </select>
 <!--保存用户-->
 <insert id="saveUser" parameterType="User">
 INSERT INTO USER(username,sex,city,age) VALUES(#{username},#{sex},#{city},#{age})
 </insert>
 <!--修改用户-->
 <update id="updateUser" parameterType="User">
 UPDATE USER SET username=#{username},sex=#{sex},city=#{city},age=#{age} WHERE id=#{id}
 </update>
 <!--根据id删除用户-->
 <delete id="deleteUser" parameterType="Integer">
 DELETE FROM USER WHERE id=#{id}
 </delete>
</mapper>

service层

UserService接口

package com.ssm.service;
import com.ssm.entity.User;
import java.util.List;
/**
 * Created by jiangfeixiang on 2018/9/4
 */
public interface UserService {
 /**
 * 返回所有用户
 * @return
 */
 List<User> getAllUser();
 /**
 * 校验用户名
 * @param username
 * @return
 */
 User checkUserName(String username);
 /**
 * 保存用户
 * @param user
 * @return
 */
 int saveUser(User user);
 /**
 * 删除用户根据id
 * @param id
 * @return
 */
 int deleteUser(Integer id);
 /**
 * 修改用户
 * @param user
 */
 void updateUser(User user);
}

UserServiceImpl实现类

package com.ssm.service.impl;
import com.ssm.dao.UserMapper;
import com.ssm.entity.User;
import com.ssm.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.util.List;
/**
 * Created by jiangfeixiang on 2018/9/4
 */
@Service
@Transactional
public class UserServiceImpl implements UserService {
 @Autowired
 private UserMapper userMapper;
 /**
 * 查询所有用户
 * @return
 */
 @Override
 public List<User> getAllUser() {
 List<User> allUser = userMapper.getAllUser();
 return allUser;
 }
 /**
 * 校验用户名
 * @param username
 * @return
 */
 @Override
 public User checkUserName(String username) {
 return userMapper.checkUserName(username);
 }
 /**
 * 保存用户
 * @param user
 * @return
 */
 @Override
 public int saveUser(User user) {
 int i = userMapper.saveUser(user);
 return i;
 }
 /**
 * 修改用户
 */
 @Override
 public void updateUser(User user) {
 userMapper.updateUser(user);
 }
 /**
 * 根据id删除用户
 * @param id
 * @return
 */
 @Override
 public int deleteUser(Integer id) {
 return userMapper.deleteUser(id);
 }
}

Controller层

UserController

package com.ssm.controller;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.ssm.common.ResultData;
import com.ssm.entity.User;
import com.ssm.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
 * Created by jiangfeixiang on 2018/9/4
 * @author
 */
@Controller
@RequestMapping(value = "/user")
public class UserController {
 @Autowired
 private UserService userService;
 /**
 *这里统一返回ResultData封装的json数据格式，不在用Map<String,Object>形式了
 * @return
 */
 @RequestMapping(value = "/getAllUser",method = RequestMethod.GET)
 @ResponseBody
 public ResultData getAllUser(@RequestParam(defaultValue="1",required=true,value="pn") Integer pn){
 Map<String, Object> map = new HashMap<>();
 /**
 * 每页显示记录数
 *
 */
 Integer pageSize=5;
 /**
 * 分页查询，注意顺序，startPage()方法放前面
 */
 PageHelper.startPage(pn, pageSize);
 /**
 * 获取所用用户信息
 */
 List<User> allUser = userService.getAllUser();
 /**
 * 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,传入连续显示的页数
 */
 PageInfo<User> pageInfo=new PageInfo(allUser);
// map.put("code",100);
// map.put("msg","成功");
// map.put("pageInfo",pageInfo);
 //return map;
 return ResultData.success(pageInfo);
 }
 /**
 * 校验用户名
 * @param username
 * @return
 */
 @RequestMapping(value = "/checkUser/{username}",method = RequestMethod.POST)
 @ResponseBody
 public ResultData checkUserName(@PathVariable("username") String username){
 //校验用户名
 User user = userService.checkUserName(username);
 System.out.println(user);
 return ResultData.success(user);
 }
 /**
 * 保存用户信息
 * @param user
 * @return
 */
 @RequestMapping(value = "/saveUser",method = RequestMethod.POST)
 @ResponseBody
 public ResultData saveUser(@RequestBody User user){
 int i = userService.saveUser(user);
 return ResultData.success();
 }
 /**
 * 修改员工信息（更新）
 */
 @RequestMapping(value = "/updateUser",method = RequestMethod.POST)
 @ResponseBody
 public ResultData updateUser(@RequestBody User user){
 System.out.print(user);
 userService.updateUser(user);
 return ResultData.success();
 }
 /**
 * 根据id删除用户
 */
 @RequestMapping(value = "/deleteUser/{id}",method = RequestMethod.DELETE)
 @ResponseBody
 public ResultData deleteUser(@PathVariable("id")Integer id){
 //保存用户
 int i = userService.deleteUser(id);
 System.out.println(i);
 return ResultData.success();
 }
}

为了Controller统一返回json数据格式，所以封装了ResultData

ResultData

package com.ssm.common;
/**
 * @Author: 姜飞祥
 * @Description: 封装结果集成统一的json样式
 * @Date: Create in 2018/9/15 12:08
 * @param: $params$
 * @return: $returns$
 */
public class ResultData<T>{
 /**
 * 信息状态码，0表示成功，1表示失败
 */
 private Integer code;
 /**
 * 提示信息
 */
 private String msg;
 /**
 * 返回的对象,因为有分页信息，方便返回json数据见名之意，这里直接变量名为pageInfo。
 */
 private T pageInfo;
 /**
 * 成功时调用的函数
 * @param object 要返回的对象
 * @return
 */
 public static ResultData<Object> success(Object object) {
 ResultData result = new ResultData();
 result.setCode(200);
 result.setMsg("成功");
 result.setPageInfo(object);
 return result;
 }
 /**
 * 成功时，如果没有要返回的对象，调用此方法
 * @return
 */
 public static ResultData<Object> success() {
 ResultData result = new ResultData();
 result.setCode(200);
 result.setMsg("成功");
 result.setPageInfo(null);
 //return success(null);
 return result;
 }
 /**
 * 失败时调用的函数
 * @return
 */
 public static ResultData<Object> fail() {
 ResultData result = new ResultData();
 result.setCode(100);
 result.setMsg("失败");
 return result;
 }
 public Integer getCode() {
 return code;
 }
 public void setCode(Integer code) {
 this.code = code;
 }
 public String getMsg() {
 return msg;
 }
 public void setMsg(String msg) {
 this.msg = msg;
 }
 public T getPageInfo() {
 return pageInfo;
 }
 public void setPageInfo(T pageInfo) {
 this.pageInfo = pageInfo;
 }
 @Override
 public String toString() {
 return "ResultData{" +
 "code=" + code +
 ", msg='" + msg + ''' +
 ", pageInfo=" + pageInfo +
 '}';
 }
}

下面是前端代码

bootstrap官网：https://v3.bootcss.com/getting-started/#download
下载后整个复制到static下。
jquery官网：http://jquery.com/download/
下载后复制到static>js下即可，并创建index.js文件
index.html

<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <title>用户管理</title>
 <!--引入jquery -->
 <script src="./static/js/jquery-3.3.1.js"></script>
 <!-- 引入样式-->
 <link rel="stylesheet" href="./static/bootstrap-3.3.7-dist/css/bootstrap.min.css">
 <script src="./static/bootstrap-3.3.7-dist/js/bootstrap.min.js"></script>
 <script type="text/javascript" src="./static/js/index.js"></script>
</head>
<body>
<!--使用bootstrap搭建页面 -->
<div class="container">
 <!--标题 -->
 <div class="row">
 <div class="col-md-12">
 <h1>用户管理</h1>
 </div>
 </div>
 <!--按钮 -->
 <div class="row">
 <div class="col-md-3 col-md-offset-8 col-sm-4 col-sm-offset-8">
 <button class="btn btn-primary" id="user_add_modal_btn">新增</button>
 <button class="btn btn-danger" id="user_delete_all_btn">删除</button>
 </div>
 </div>
 <br>
 <!--显示表格数据 -->
 <div class="row">
 <div class="table-responsive col-md-12">
 <table class="table table-hover" id="users_table">
 <thead>
 <tr>
 <th>
 <input type="checkbox" id="check_all"/>
 </th>
 <th>ID</th>
 <th>姓名</th>
 <th>性别</th>
 <th>城市</th>
 <th>年龄</th>
 <th>操作</th>
 </tr>
 </thead>
 <tbody>
 </tbody>
 </table>
 </div>
 </div>
 <!--显示分页信息 -->
 <div class="row">
 <!--分页文字信息 -->
 <div class="col-md-6 col-sm-6" id="page_info_area">
 当前第页，总共页，总共条记录
 </div>
 <!--分页导航条信息 -->
 <div class="col-md-6 col-sm-6" id="page_nav_area">
 </div>
 </div>
</div>
<!-- 添加用户弹出的模态框 -->
<div class="modal fade" id="userAddModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
 <div class="modal-dialog" role="document">
 <div class="modal-content">
 <div class="modal-header">
 <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span
 aria-hidden="true">×</span></button>
 <h4 class="modal-title" id="userAddModalLabel">添加用户</h4>
 </div>
 <div class="modal-body">
 <form class="form-horizontal">
 <div class="form-group">
 <label class="col-sm-2 control-label">姓名</label>
 <div class="col-sm-10">
 <input type="text" name="username" class="form-control" id="username_add_input" placeholder="姓名2-16位中英文、数字">
 <span class="help-block"></span>
 </div>
 </div>
 <div class="form-group">
 <label class="col-sm-2 control-label">性别</label>
 <div class="col-sm-10">
 <label class="radio-inline">
 <input type="radio" name="sex" id="sex1_add_input" value="男" checked="checked"> 男
 </label>
 <label class="radio-inline">
 <input type="radio" name="sex" id="sex2_add_input" value="女"> 女
 </label>
 </div>
 </div>
 <div class="form-group">
 <label class="col-sm-2 control-label">城市</label>
 <div class="col-sm-10">
 <input type="text" name="city" class="form-control" id="city_add_input" placeholder="请输入城市">
 <span class="help-block"></span>
 </div>
 </div>
 <div class="form-group">
 <label class="col-sm-2 control-label">年龄</label>
 <div class="col-sm-10">
 <input type="text" name="age" class="form-control" id="age_add_input" placeholder="请输入年龄">
 </div>
 </div>
 </form>
 </div>
 <div class="modal-footer">
 <button type="button" class="btn btn-default" data-dismiss="modal">关闭</button>
 <button type="button" class="btn btn-primary" id="user_save_btn">保存</button>
 </div>
 </div>
 </div>
</div>
<!--修改用户弹出的模态框 -->
<div class="modal fade" id="userReviseModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
 <div class="modal-dialog" role="document">
 <div class="modal-content">
 <div class="modal-header">
 <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span
 aria-hidden="true">×</span></button>
 <h4 class="modal-title" id="userReviseModalLabel">修改用户</h4>
 </div>
 <div class="modal-body">
 <form class="form-horizontal">
 <div class="form-group">
 <label class="col-sm-2 control-label">姓名</label>
 <div class="col-sm-10">
 <input type="text" name="username" class="form-control" id="username_revise_input" placeholder="姓名是2-5位中文或6-16位英文和数字的组合">
 <span class="help-block"></span>
 </div>
 </div>
 <div class="form-group">
 <label class="col-sm-2 control-label">性别</label>
 <div class="col-sm-10">
 <label class="radio-inline">
 <input type="radio" name="sex" id="sex1_revise_input" value="男" checked="checked"> 男
 </label>
 <label class="radio-inline">
 <input type="radio" name="sex" id="sex2_revise_input" value="女"> 女
 </label>
 </div>
 </div>
 <div class="form-group">
 <label class="col-sm-2 control-label">城市</label>
 <div class="col-sm-10">
 <input type="text" name="city" class="form-control" id="city_revise_input" placeholder="城市">
 <span class="help-block"></span>
 </div>
 </div>
 <div class="form-group">
 <label class="col-sm-2 control-label">年龄</label>
 <div class="col-sm-10">
 <input type="text" name="age" class="form-control" id="age_revise_input" placeholder="年龄">
 </div>
 </div>
 </form>
 </div>
 <div class="modal-footer">
 <button type="button" class="btn btn-default" data-dismiss="modal">关闭</button>
 <button type="button" class="btn btn-primary" id="user_revise_btn">修改</button>
 </div>
 </div>
 </div>
</div>
</body>
</html>

index.js

$(function () {
 var totalRecord,currentPage;
 //1.显示所有数据
 to_page(1);
 //2.添加用户
 addUser();
 //3.修改用户
 reviseUser();
 //4.单个删除用户
 deleteUser();
 /**
 * 1.显示所用用户
 * @param pn
 */
 function to_page(pn) {
 $.ajax({
 url: "/user/getAllUser",
 data:"pn="+pn,
 type: "GET",
 dataType: "json",
 contentType:"application/json;charset=UTF-8",
 success: function (data) {
 //alert(data.msg);
 //解析并显示员工数据表
 build_users_table(data)
 //2.解析并显示分页信息
 build_page_info(data);
 //3.解析并显示分页条数据
 build_page_nav(data);
 }
 })
 }
 /**
 * 解析并显示员工数据表
 * @param data
 */
 function build_users_table(data) {
 //清空table表格
 $("#users_table tbody").empty();
 var users = data.pageInfo.list;
 //遍历元素
 $.each(users, function (index, item) {
 var checkBox=$("<td><input type='checkbox' class='check_item'/></td>");
 var id = $("<td></td>").append(item.id);
 var username = $("<td></td>").append(item.username);
 var sex = $("<td></td>").append(item.sex);
 var city = $("<td></td>").append(item.city);
 var age = $("<td></td>").append(item.age);
 var button1 = $("<button></button>").addClass("btn btn-primary btn-sm edit_btn").append($("<span></span>").addClass("glyphicon glyphicon-pencil").attr("aria-hidden", true)).append("编辑");
 var button2 = $("<button></button>").addClass("tn btn-danger btn-sm delete_btn").append($("<span></span>").addClass("glyphicon glyphicon-trash").attr("aria-hidden", true)).append("删除");
 var td_btn = $("<td></td>").append(button1).append(" ").append(button2);
 $("<tr></tr>").append(checkBox).append(id).append(username).append(sex).append(city).append(age)
 .append(td_btn ).appendTo("#users_table tbody");
 })
 }
 /**
 * 解析显示分页信息
 * @param data
 */
 function build_page_info(data) {
 $("#page_info_area").empty();
 $("#page_info_area").append("当前" + data.pageInfo.pageNum + "页,总共" + data.pageInfo.pages +
 "页，总共" + data.pageInfo.total + "条记录");
 totalRecord = data.pageInfo.total;
 currentPage=data.pageInfo.pageNum;
 }
 /**
 * 解析显示分页导航条
 * @param data
 */
 function build_page_nav(data) {
 $("#page_nav_area").empty();
 var ul = $("<ul></ul>>").addClass("pagination");
 var firstPageLi = $("<li></li>").append($("<a></a>").append("首页").attr("href", "#"));
 var prePageLi = $("<li></li>").append($("<a></a>").append("«").attr("href", "#"));
 var nextPageLi = $("<li></li>").append($("<a></a>").append("»").attr("href", "#"));
 var lastPageLi = $("<li></li>").append($("<a></a>").append("末页").attr("href", "#"));
 //如果没有前一页，前一页和首页就不能点
 if (data.pageInfo.hasPreviousPage == false) {
 firstPageLi.addClass("disabled");
 prePageLi.addClass("disabled");
 } else {
 //首页
 firstPageLi.click(function () {
 to_page(1);
 });
 prePageLi.click(function () {
 to_page(data.pageInfo.pageNum - 1);
 });
 }
 if (data.pageInfo.hasNextPage == false) {
 nextPageLi.addClass("disabled");
 lastPageLi.addClass("disabled");
 } else {
 //构建点击事件
 nextPageLi.click(function () {
 to_page(data.pageInfo.pageNum + 1);
 });
 lastPageLi.click(function () {
 to_page(data.pageInfo.lastPage);
 })
 }
 //添加首页和前一页
 ul.append(firstPageLi).append(prePageLi);
 //遍历添加页码
 $.each(data.pageInfo.navigatepageNums, function (index, item) {
 var numLi = $("<li></li>").append($("<a></a>").append(item).attr("href", "#"));
 //如果是当前选中页面，添加active标识
 if (data.pageInfo.pageNum == item) {
 numLi.addClass("active");
 }
 //给每个页码添加点击就跳转
 numLi.click(function () {
 to_page(item);
 });
 ul.append(numLi);
 });
 //添加下一页和末页
 ul.append(nextPageLi).append(lastPageLi);
 var navEle = $("<nav></nav>").append(ul);
 navEle.appendTo("#page_nav_area");
 }
 /**
 * 2.实现新增功能
 * @returns {boolean}
 */
 function addUser() {
 //为新增按钮添加modal
 $("#user_add_modal_btn").click(function () {
 //清除表单数据
 $("#userAddModal form")[0].reset();
 $("#userAddModal").modal({
 backdrop: "static"
 })
 });
 /**
 * 2.保存用户信息
 * 校验该用户是否存在,如果存在就不能添加该用户
 */
 $("#username_add_input").change(function () {
 var username = $("#username_add_input").val();
 //发送Ajax请求校验姓名是否可用
 $.ajax({
 url: "/user/checkUser/"+username,
 //data: "username=" + username,
 type: "POST",
 success: function (data) {
 //alert(data.pageInfo.username);
 //表示成功，用户名可用
 if (data.code == 200 && data.pageInfo != null) {
 alert("用户名**"+ data.pageInfo.username +"**已经存在");
 $("#user_save_btn").attr("ajax-va", "error");
 } else if (data.code == 200 && data.pageInfo == null) {
 //为保存按钮添加属性
 $("#user_save_btn").attr("ajax-va", "success");
 }
 }
 })
 });
 /**
 * 保存用户信息
 */
 $("#user_save_btn").click(function () {
 var username = $("#username_add_input").val();
 var sex =$("input[name=sex]:checked").val();
 var city =$("#city_add_input").val();
 var age =$("#age_add_input").val();
 //2.发送ajax请求保存员工
 $.ajax({
 url: "/user/saveUser",
 type: "POST",
 data: JSON.stringify({username:username,sex:sex,city:city,age:age}),
 dataType:"json",
 contentType:"application/json;charset=UTF-8",
 success: function (data) {
 if (data.code == 200){
 //1.关闭modal框
 $("#userAddModal").modal('hide');
 //2.来到最后一页，显示刚才保存的数据
 to_page(totalRecord);
 }
 }
 });
 });
 }
 /**
 * 3.修改用户
 */
 function reviseUser() {
 //为编辑按钮绑定弹出modal框事件
 //1.因为在按钮创建之前就绑定了click，所以用普通click方法绑定不上
 $(document).on("click",".edit_btn",function () {
 //清除表单数据
 $("#userReviseModal form")[0].reset();
 $("#username_revise_input").next("span").text("");
 //修改框中用户信息回显
 var id= $(this).parent().parent().children("td").eq(1).text();
 //将id的值传递给修改按钮的属性，方便发送Ajax请求
 $("#user_revise_btn").attr("edit-id",id);
 var username=$(this).parent().parent().children("td").eq(2).text();
 var sex=$(this).parent().parent().children("td").eq(3).text();
 var city=$(this).parent().parent().children("td").eq(4).text();
 var age=$(this).parent().parent().children("td").eq(5).text();
 $("#username_revise_input").val(username);
 $("#userReviseModal input[name=sex]").val([sex]);
 $("#city_revise_input").val(city);
 $("#age_revise_input").val(age);
 $("#userReviseModal").modal({
 backdrop: "static"
 })
 });
 //2.为模态框中的修改按钮绑定事件，更新员工信息
 $("#user_revise_btn").click(function () {
 //2.验证通过后发送ajax请求保存更新的员工数据
 //如果要直接发送PUT之类的请求
 //在WEB.xml配置HttpPutFormContentFilter过滤器即可
 //这里未使用如上所述方法
 var id = $(this).attr("edit-id");
 var username = $("#username_revise_input").val();
 var sex = $("#userReviseModal input[name=sex]").val();
 var city =$("#city_revise_input").val();
 var age =$("#age_revise_input").val();
 $.ajax({
 url:"/user/updateUser",
 type:"POST",
 data:JSON.stringify({id:id,username:username,sex:sex,city:city,age:age}),
 dataType:"json",
 contentType:"application/json;charset=UTF-8",
 success:function () {
 //1.关闭modal框
 $("#userReviseModal").modal('hide');
 //2.来到当前页，显示刚才保存的数据
 to_page(currentPage);
 }
 })
 })
 }
 /**
 * 4.删除用户
 */
 function deleteUser() {
 $(document).on("click",".delete_btn",function () {
 //1.弹出确认删除对话框
 var username=$(this).parents("tr").find("td:eq(2)").text();
 var id=$(this).parents("tr").find("td:eq(1)").text();
 if(confirm("确认删除【"+username+"】吗？")){
 // alert(id);
 //确认，发送ajax请求删除
 $.ajax({
 url:"/user/deleteUser/"+id,
 type:"DELETE",
 success:function (data) {
 alert(data.msg);
 to_page(currentPage);
 }
 })
 }
 })
 }
})

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