ssm综合增删改查

项目结构

使用mybatis逆向工程生成需要的Bean类和Mapper复制到项目中

web.xml





    Archetype Created Web Application

    

        DispatcherServlet

        org.springframework.web.servlet.DispatcherServlet

        

            contextConfigLocation

            classpath:applicationContext.xml

        

    

    

        DispatcherServlet

        *.do

mydata.properties

jdbc.driver=com.mysql.cj.jdbc.Driver

jdbc.url=jdbc:mysql://127.0.0.1:3306/test?serverTimezone=UTC

jdbc.username=root

jdbc.password=123456

applicationContext.xml

Service层

package com.weiwei.ssmdemo.service;

import com.weiwei.ssmdemo.bean.UserBean;

import java.util.List;

public interface UserBeanService {

    void insertUserBean(UserBean userBean);

    void updateUserBean(UserBean userBean);

    void deleteUserBean(int userid);

    List selectUserBean();

    List selectUserBeanByWhere(UserBean userBean);

}

package com.weiwei.ssmdemo.service;

import com.weiwei.ssmdemo.bean.UserBean;

import com.weiwei.ssmdemo.bean.UserBeanExample;

import com.weiwei.ssmdemo.mapper.UserBeanMapper;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;



import java.util.List;

@Service("userBeanService")

public class UserBeanServiceImpl implements UserBeanService{

    @Autowired

    private UserBeanMapper userBeanMapper;

    @Override

    public void insertUserBean(UserBean userBean) {

        userBeanMapper.insert(userBean);

    }



    @Override

    public void updateUserBean(UserBean userBean) {

        userBeanMapper.updateByPrimaryKey(userBean);

    }



    @Override

    public void deleteUserBean(int userid) {

        userBeanMapper.deleteByPrimaryKey(userid);

    }



    @Override

    public List selectUserBean() {

        return userBeanMapper.selectByExample(null);

    }



    @Override

    public List selectUserBeanByWhere(UserBean userBean) {

        UserBeanExample userBeanExample = new UserBeanExample();

        UserBeanExample.Criteria criteria = userBeanExample.createCriteria();

        if(userBean.getUserName()!=null&&userBean.getUserName().length()>0){

            criteria.andUserNameLike("%"+userBean.getUserName()+"%");

        }

        if(userBean.getUserAge()!=null){

            criteria.andUserAgeEqualTo(userBean.getUserAge());

        }

        if (userBean.getUserId()!=null){

            criteria.andUserIdEqualTo(userBean.getUserId());

        }

        return userBeanMapper.selectByExample(userBeanExample);

    }

}

Controller层

package com.weiwei.ssmdemo.controller;



import com.weiwei.ssmdemo.bean.ResBean;

import com.weiwei.ssmdemo.bean.UserBean;

import com.weiwei.ssmdemo.service.UserBeanService;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestBody;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.ResponseBody;



import java.util.List;



@Controller

@RequestMapping("/user")

public class UserBeanController {

    @Autowired

    private UserBeanService userBeanService;

    @RequestMapping("adduser.do")

    @ResponseBody

    //添加用户信息

    public ResBean addUser(@RequestBody UserBean userBean){

        try {

            userBeanService.insertUserBean(userBean);

            return new ResBean(true,"添加成功");

        }catch (Exception e){

            e.printStackTrace();

            return new ResBean(false,"添加失败");

        }

    }



    //修改用户信息

    @RequestMapping("updateuser.do")

    @ResponseBody

    public ResBean updateUser(@RequestBody UserBean userBean){

        try {

            userBeanService.updateUserBean(userBean);

            return new ResBean(true,"修改成功");

        }catch (Exception e){

            e.printStackTrace();

            return new ResBean(false,"修改失败");

        }

    }



    //删除用户信息

    @RequestMapping("deleteuser.do")

    @ResponseBody

    public ResBean deleteUser(int userid){

        try {

            userBeanService.deleteUserBean(userid);

            return new ResBean(true,"删除成功");

        }catch (Exception e){

            e.printStackTrace();

            return new ResBean(false,"删除失败");

        }

    }



    //查询所有用户信息

    @RequestMapping("selectall.do")

    @ResponseBody

    public List selectAllUser(){

        try {

           return userBeanService.selectUserBean();

        }catch (Exception e){

            e.printStackTrace();

            return null;

        }

    }



    //条件查询

    @RequestMapping("selectwhere.do")

    @ResponseBody

    public List selectWhere(@RequestBody UserBean userBean){

        try{

            return  userBeanService.selectUserBeanByWhere(userBean);

        }catch (Exception e){

            e.printStackTrace();

            return null;

        }

    }

}

返回类ResBean

package com.weiwei.ssmdemo.bean;



public class ResBean {

    private boolean flag;

    private String success;



    public ResBean(boolean flag, String success) {

        this.flag = flag;

        this.success = success;

    }



    public boolean isFlag() {

        return flag;

    }



    public void setFlag(boolean flag) {

        this.flag = flag;

    }



    public String getSuccess() {

        return success;

    }



    public void setSuccess(String success) {

        this.success = success;

    }

}

返给前端的接口文档

1、添加用户信息

简要描述

ssm增删改查

请求URL

http://localhost:8080/ssmdemo/user/adduser.do

请求方式

post

请求参数示例

{

"userName": "大三",

"userAge": 27,

"userAddress": "存储"

}

json字段说明

字段名	必选	类型	说明
userName	是	string	用户姓名
userAge	是	number	用户年龄
userAddress	是	string	用户地址

备注

2、修改用户信息

简要描述

修改用户信息

请求URL

http://localhost:8080/ssmdemo/user/updateuser.do

请求方式

post

请求参数示例

{

"userId": 3,

"userName": "韩信",

"userAge": 40,

"userAddress": "军营"

}

json字段说明

字段名	必选	类型	说明
userId	是	number	需要修改的用户id
userName	是	string	需要修改的用户姓名
userAge	是	number	需要修改的用户年龄
userAddress	是	string	需要修改的用户地址

备注

3、删除用户信息

简要描述

删除用户信息

请求URL

http://localhost:8080/ssmdemo/user/deleteuser.do

请求方式

get

请求Query参数

参数名	必选	类型	说明
userid	是	number	需要删除的用户id

备注

4、查询所有用户信息

简要描述

查询所有用户信息

请求URL

http://localhost:8080/ssmdemo/user/selectall.do

请求方式

post

成功返回示例

[

{

"userId": 2,

"userName": "张三",

"userAge": 12,

"userAddress": "西安"

{

"userId": 3,

"userName": "韩信",

"userAge": 40,

"userAddress": "军营"

{

"userId": 4,

"userName": "李思思",

"userAge": 54,

"userAddress": "重庆"

}

]

备注

5、条件查询

简要描述

条件查询

请求URL

http://localhost:8080/ssmdemo/user/selectwhere.do

请求方式

post

请求参数示例

{

"userName": "三"

}

成功返回示例

[

{

"userId": 2,

"userName": "张三",

"userAge": 12,

"userAddress": "西安"

{

"userId": 7,

"userName": "小三",

"userAge": 27,

"userAddress": "存储"

{

"userId": 8,

"userName": "大三",

"userAge": 27,

"userAddress": "存储"

}

]

ssm综合增删改查

Java相关栏目本月热门文章