本文实例为大家分享了SpringBoot实现分页功能的具体代码,供大家参考,具体内容如下
新建demo\src\main\java\com\example\demo\mapper\UserMapper.java
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package com.example.demo.mapper; import com.example.demo.entity.User; import org.apache.ibatis.annotations.Mapper; import java.util.List; Mapper public interface UserMapper { public List<User> findUserByName(String userName); public List<User> ListUser(); public List<User> queryPage(Integer startRows); public int getRowCount(); public int insertUser(User user); public int delete( int userId); public int Update(User user); } |
新建demo\src\main\resources\mapper\UserMapper.xml
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<? xml version = "1.0" encoding = "UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD com.example.Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> < mapper namespace = "com.example.demo.mapper.UserMapper" > < resultMap id = "result" type = "com.example.demo.entity.User" > < result property = "userId" column = "userId" /> < result property = "userDate" column = "userDate" /> < result property = "userName" column = "userName" /> < result property = "userAddress" column = "userAddress" /> </ resultMap > < select id = "ListUser" resultMap = "result" > SELECT * FROM user </ select > < select id = "findUserByName" resultMap = "result" parameterType = "String" > SELECT * FROM user where userName like concat(concat('%',#{userName}),'%') order by userId desc </ select > < select id = "queryPage" resultMap = "result" parameterType = "Integer" > select * from user order by userId desc limit #{startRows},5 </ select > < select id = "getRowCount" resultType = "Integer" > select count(*) from user </ select > < insert id = "insertUser" parameterType = "com.example.demo.entity.User" > INSERT INTO user ( userId,userDate,userName,userAddress ) VALUES ( #{userId}, #{userDate, jdbcType=VARCHAR}, #{userName, jdbcType=VARCHAR}, #{userAddress, jdbcType=VARCHAR} ) </ insert > < delete id = "delete" parameterType = "int" > delete from user where userId=#{userId} </ delete > < update id = "Update" parameterType = "com.example.demo.entity.User" > update user set user.userDate=#{userDate},user.userName=#{userName},user.userAddress=#{userAddress} where user.userId=#{userId} </ update > </ mapper > |
新建demo\src\main\java\com\example\demo\service\UserService.java
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package com.example.demo.service; import com.example.demo.entity.User; import com.example.demo.mapper.UserMapper; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.List; Service public class UserService { @Autowired private UserMapper userMapper; public List<User> findByName(String userName) { return userMapper.findUserByName(userName); } public List<User> queryPage(Integer startRows) { return userMapper.queryPage(startRows); } public int getRowCount() { return userMapper.getRowCount(); } public User insertUser(User user) { userMapper.insertUser(user); return user; } public List<User> ListUser(){ return userMapper.ListUser(); } public int Update(User user){ return userMapper.Update(user); } public int delete( int userId){ return userMapper.delete(userId); } } |
新建demo\src\main\java\com\example\demo\controller\UserCtrl.java
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package com.example.demo.controller; import com.example.demo.entity.User; import com.example.demo.service.UserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.*; import java.util.List; RestController public class UserCtrl { @Autowired private UserService userService; @RequestMapping (value = "/delete" , method = RequestMethod.POST) public Integer delete(Integer userId) { System.out.println(userId); int result = userService.delete(userId); return result; } @RequestMapping (value = "/update" , method = RequestMethod.POST) @ResponseBody public String update(User user) { int result = userService.Update(user); if (result >= 1 ) { return "修改成功" ; } else { return "修改失败" ; } } @RequestMapping (value = "/insert" , method = RequestMethod.POST) public User insert(User user) { return userService.insertUser(user); } @RequestMapping ( "/ListUser" ) @ResponseBody public List<User> ListUser() { return userService.ListUser(); } @RequestMapping ( "/ListByName" ) @ResponseBody public List<User> ListUserByName(String userName) { return userService.findByName(userName); } /** * 分页 * @return */ @RequestMapping (value= "/page" ) @ResponseBody public List<User> page(Integer page){ int pageNow = page == null ? 1 : page; int pageSize = 5 ; int startRows = pageSize*(pageNow- 1 ); List<User> list = userService.queryPage(startRows); return list; } /** * rows * @return */ @RequestMapping (value= "/rows" ) @ResponseBody public int rows(){ return userService.getRowCount(); } } |
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/waillyer/article/details/110421383