SpringBoot實現CURD

?項目列表

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 https://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.3.1.RELEASE</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>com.lin</groupId><artifactId>springboot0711</artifactId><version>0.0.1-SNAPSHOT</version><name>springboot0711</name><description>Demo project for Spring Boot</description><properties><java.version>1.8</java.version></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-jdbc</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>8.0.20</version></dependency><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.17</version></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>5</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>5.2.7.RELEASE</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId><version>2.3.1.RELEASE</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-jdbc</artifactId><version>2.3.1.RELEASE</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-thymeleaf</artifactId><version>2.3.1.RELEASE</version></dependency><dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId><version>2.1.3</version></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.11</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope><exclusions><exclusion><groupId>org.junit.vintage</groupId><artifactId>junit-vintage-engine</artifactId></exclusion></exclusions></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId><scope>test</scope></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>

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Bean

User

package com.lin.springboot0711.Bean;public class User {private int id;private String name;private String password;public int getId() {return id;}public void setId(int id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}@Overridepublic String toString() {return "User{" +"id=" + id +", name='" + name + '\'' +", password='" + password + '\'' +'}';} }

?Controller??

?ModifyUserController

package com.lin.springboot0711.Controller;import com.lin.springboot0711.Bean.User; import com.lin.springboot0711.Service.UserService; import org.springframework.stereotype.Controller; import org.springframework.ui.ModelMap; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody;import javax.annotation.Resource; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map;@Controller public class ModifyUserController {@ResourceUserService userService;//查詢所有用戶@RequestMapping("/users")public String showUsers(ModelMap modelMap){List<User> userList=userService.queryAllUser();modelMap.addAttribute("userList",userList);return "users";}// 新增用戶@RequestMapping("addUser")@ResponseBodypublic Map addUser(User user){int flag=userService.addUser(user);Map<String,Object>map=new HashMap<String ,Object>();if (flag==1) {map.put("msg","新增用戶成功");return map;}else {map.put("msg","新增用戶失敗");return map;}} // 根據用戶ID刪除用戶信息@RequestMapping(value = "/deleteUser+{id}")public String dropUser(@PathVariable("id")String id ,ModelMap modelMap){int flag=userService.dropUser(id);List<User>userList=userService.queryAllUser();modelMap.addAttribute("userList",userList);if (flag==1){return "users";}else{return "error";}} // 根據用戶ID查詢用戶信息@RequestMapping("/user+{id}")public String queryUser(@PathVariable("id") String id,ModelMap modelMap){User user=userService.queryUserById(id);modelMap.addAttribute("user",user);return "userInfo";} // 根據用戶ID來修改用戶信息@RequestMapping("/modifyUser")@ResponseBodypublic Map modifyUser(User user){int flag=userService.modifyUser(user);Map<String,Object>map =new HashMap<>();if (flag==1){map.put("msg","修改用戶信息成功");return map;}else {map.put("msg", "修改用戶信息失敗");return map;}}}

DAO

package com.lin.springboot0711.Dao;import com.lin.springboot0711.Bean.User; import org.apache.ibatis.annotations.Param;import java.util.List;public interface UserMapper {public User getInfo(@Param("name") String name,@Param("password") String password);public User selectUserById(String id);public int insertUser(User user);int updateUser(User user);int deleteUser(String id);List<User> getAllUser(); }

Service?

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package com.lin.springboot0711.Service;import com.lin.springboot0711.Bean.User;import java.util.List;public interface UserService {User loginIn(String name,String password);User queryUserById(String id);int addUser(User user);int dropUser(String id);int modifyUser(User user);List<User>queryAllUser(); }

ServiceImpl

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package com.lin.springboot0711.ServiceImpl;import com.lin.springboot0711.Bean.User; import com.lin.springboot0711.Dao.UserMapper; import com.lin.springboot0711.Service.UserService; import org.springframework.stereotype.Service;import javax.annotation.Resource; import java.util.List;@Service public class UserServiceImpl implements UserService { // 將DAO注入Service層@Resourceprivate UserMapper userMapper;@Overridepublic User loginIn(String name,String password){return userMapper.getInfo(name,password);}@Overridepublic User queryUserById(String id){return userMapper.selectUserById(id);}@Overridepublic int addUser(User user){int aFlag=userMapper.insertUser(user);return aFlag;}@Overridepublic int dropUser(String id){int dFlag=userMapper.deleteUser(id);return dFlag;}@Overridepublic int modifyUser(User user){int mFlag=userMapper.updateUser(user);return mFlag;}@Overridepublic List<User>queryAllUser(){return userMapper.getAllUser();} }

Springboot0711Application

package com.lin.springboot0711;import org.mybatis.spring.annotation.MapperScan; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplication @MapperScan("com.lin.springboot0711.Dao") public class Springboot0711Application {public static void main(String[] args) {SpringApplication.run(Springboot0711Application.class, args);}}

?mapper? UserMapper.xml

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<?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.lin.springboot0711.Dao.UserMapper"><select id="getInfo" resultType="com.lin.springboot0711.Bean.User">SELECT * FROM userWHEREname = #{name} AND password = #{password}</select> <!-- 根據ID查詢用戶信息--><select id="selectUserById" parameterType="String" resultType="com.lin.springboot0711.Bean.User">select * from user where id=#{id};</select> <!-- 插入新用戶 id自增--><insert id="insertUser" parameterType="com.lin.springboot0711.Bean.User" useGeneratedKeys="true" keyProperty="id">insert into user(name, password) VALUES (#{name},#{password});</insert><delete id="deleteUser" parameterType="String">delete from user where id=#{id};</delete><!--根據ID修改用戶信息，返回數據庫操作影響行數，為0則是失敗--><update id="updateUser" parameterType="com.lin.springboot0711.Bean.User">update user set name=#{name} ,password=#{password} where id=#{id};</update><select id="getAllUser" resultType="com.lin.springboot0711.Bean.User">select * from user;</select></mapper>

layui框架包（空間查看）

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?login.html

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<!DOCTYPE html> <html lang="en"> <head><meta charset="UTF-8"><title>login</title> </head> <body> <form role="form" action = "/loginIn" method="post">賬號：<input type="text" id="name" name = "name"> <br>密碼：<input type="password" id = "password" name = "password"> <br><input type="submit" id = "login" value = "login"> </form></body> </html>

error.html

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<!DOCTYPE html> <html lang="en"> <head><meta charset="UTF-8"><title>error</title> </head> <body> <h1>登錄失敗！</h1> </body> </html>

success.html

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<!DOCTYPE html> <html lang="en"> <head><meta charset="UTF-8"><title>success</title> </head> <body> <h1>登錄成功！</h1> </body> </html>

?userInfo.html

<!DOCTYPE html> <html lang="en" xmlns:th="http://www.thymeleaf.org"> <head><meta charset="UTF-8"><title>UserInfo</title><!-- 新 Bootstrap4 核心 CSS 文件 --><link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"><script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script><!-- bootstrap.bundle.min.js 用于彈窗、提示、下拉菜單，包含了 popper.min.js --><script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script><!-- 最新的 Bootstrap4 核心 JavaScript 文件 --><script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <div id="modifyUser"><form name="modifyUser"><div class="form-group"><label for="id">ID:</label><input type="text" class="form-control" name="id" id="id" th:value="${user.getId()}" disabled></div><div class="form-group"><label for="name">name:</label><input type="text" class="form-control" name="name" id="name" th:value="${user.getName()}"></div><div class="form-group"><label for="pwd">Password:</label><input type="text" class="form-control" name="pwd" id = "pwd" th:value="${user.getPassword()}"></div> <!-- <div class="form-check">--> <!-- <label for="role">role:</label>--> <!-- <select class="form-control" name="role" id = "role" th:value="${user.getRole()}">--> <!-- <option th:selected="${user.getRole()=='admin'}" value = "admin">admin</option>--> <!-- <option th:selected="${user.getRole()=='user'}" value = "user">user</option>--> <!-- </select>--> <!-- </div>--></form><button id = "modify">ModifyUser</button> </div> <script >//字符串判空方法function isBlank(str){if(str == "" || str == null || str == undefined){return true;}else {return false;}}//添加用戶js響應事件$("#modify").click(function(){var id = $("#id").val();var name = $("#name").val();var password = $("#pwd").val();//判斷是否有未填項if(isBlank(name) || isBlank(password) ){window.confirm("請完善信息");}else {var param = {"id": id,"name": name,"password": password};$.ajax({url:"/modifyUser", //請求urldata: param, //請求參數async: true, //是否異步success: function f(result) {window.confirm(result.msg); //修改用戶信息成功提示框location.href = "users"; //重新加載界面，同步數據庫信息}});}}); </script> </body> </html>

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?users.html

<!DOCTYPE html> <html lang="en" xmlns:th="http://www.thymeleaf.org"> <head><meta charset="UTF-8"><title>Users</title><!-- 新 Bootstrap4 核心 CSS 文件 --><link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"><script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script><!-- bootstrap.bundle.min.js 用于彈窗、提示、下拉菜單，包含了 popper.min.js --><script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script><!-- 最新的 Bootstrap4 核心 JavaScript 文件 --><script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <div id = "selectResult"><table class="table table-dark table-hover"><thead><tr><th>用戶ID</th><th>用戶名稱</th><th>用戶密碼</th><th>操作</th></tr></thead><tbody><tr th:each="user : ${userList}"><td th:text="${user.id}"></td><td th:text="${user.name}"></td><td th:text="${user.password}"></td><td><a th:href = "@{/user+{id}(id=${user.id})}">修改</a><a th:href = "@{/deleteUser+{id}(id=${user.id})}" id = "delete">刪除</a></td></tr></tbody></table> </div> <div id = "addUser"><form name="addUser"><div class="form-group"><label for="name">name:</label><input type="text" class="form-control" name="name" id="name"></div><div class="form-group"><label for="pwd">Password:</label><input type="password" class="form-control" name="pwd" id = "pwd"></div> <!-- <div class="form-check">--> <!-- <label for="role">role:</label>--> <!-- <select class="form-control" name="role" id = "role">--> <!-- <option>admin</option>--> <!-- <option>user</option>--> <!-- </select>--> <!-- </div>--></form><button id = "add">AddUser</button></div><script >//字符串判空方法function isBlank(str){if(str == "" || str == null || str == undefined){return true;}else {return false;}}//添加用戶js響應事件$("#add").click(function(){var name = document.forms["addUser"]["name"].value;var password = document.forms["addUser"]["pwd"].value;//判斷是否有未填項if(isBlank(name) || isBlank(password) ){window.confirm("請完善信息");}else {var param = {"name": name,"password": password};$.ajax({url:"/addUser", //請求urldata: param, //請求參數async: true, //是否異步success: function f(result) {window.confirm(result.msg); //新增用戶成功提示框location.href = "users"; //重新加載界面，同步數據庫信息}});}}); </script> </body> </html>

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?application.yml

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spring:datasource:name: springboot #數據庫名url: jdbc:mysql://localhost:3306/springboot?serverTimezone=UTCusername: #用戶名password: #密碼driver-class-name: com.mysql.cj.jdbc.Driver #數據庫鏈接驅動 mybatis:mapper-locations: classpath:mapper/*.xmltype-aliases-package: com.lin.springboot0711.Bean

操作過程

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說明

?該項目是一個簡單的CURD? 參考GitHub一個小的項目修改??

附上GitHub地址：https://github.com/redesperado/test1.git

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