Spring boot+mybatis+thymeleaf 实现登录注册增删改查功能的示例代码
本文重在实现理解,过滤器,业务,逻辑需求,样式请无视。。
项目结构如下
1.idea新建Spring boot项目,在pom中加上thymeleaf和mybatis支持。pom.xml代码如下
<?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> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.1.3.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.jz</groupId> <artifactId>table</artifactId> <version>0.0.1-SNAPSHOT</version> <name>table</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-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.3.1</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
2. 在项目resources目录下新建mybatis文件夹,用于存放mybatis配置文件。 在 application.properties 中配置本地数据源和mybatis配置文件地址, application.properties代码如下
spring.datasource.driverClassName=com.mysql.cj.jdbc.Driver spring.datasource.url=jdbc:mysql://localhost:3306/student?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=UTC spring.datasource.username=用户名 spring.datasource.password=密码 spring.jpa.showSql=true mybatis: mybatis.type-aliases-package=com.jz.table.entity mybatis.mapper-locations=mybatis/*.xml
com.mysql.cj.jdbc.Driver 是 mysql-connector-java 6中的,需要指定时区serverTimezone
2.2在启动类上加上扫描的Dao包
package com.jz.table; import org.mybatis.spring.annotation.MapperScan; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication @MapperScan("com.jz.table.dao") public class TableApplication { public static void main(String[] args) { SpringApplication.run(TableApplication.class, args); } }
3.数据库建两个表admin和userinfo用于登录和操作用
2019.10.3 现在mysql不能用admin作为表名了,请注意一下
4.开始写代码
entity:实体代码
1.Admin实体类
package com.jz.table.entity; public class Admin { private Integer id; private String name; private Integer password; private String job; public Admin() { } public Admin(Integer id, String name, Integer password, String job) { this.id = id; this.name = name; this.password = password; this.job = job; } public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public Integer getPassword() { return password; } public void setPassword(Integer password) { this.password = password; } public String getJob() { return job; } public void setJob(String job) { this.job = job; } }
2.UserInfo实体类
package com.jz.table.entity; public class UserInfo { private Integer id; private String name; private Integer age; private String sex; public UserInfo() { } public UserInfo(Integer id, String name, Integer age, String sex) { this.id = id; this.name = name; this.age = age; this.sex = sex; } public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public Integer getAge() { return age; } public void setAge(Integer age) { this.age = age; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } }
Dao层代码
1.AdminDao
package com.jz.table.dao; import com.jz.table.entity.Admin; public interface AdminDao { //登录判断 Admin login(Admin admin); //注册 int addAdmin(Admin admin); }
2.UserDao
package com.jz.table.dao; import com.jz.table.entity.UserInfo; import java.util.List; public interface UserDao { //查 List<UserInfo> findall(); //增 int adduser(UserInfo user); //根据Id查,用于修改时页面回显数据 UserInfo findByid(Integer id); //修改 int updateUser(UserInfo user); //删除 int delUser(Integer id); }
3.XML文件,因为没有业务逻辑,service省了,controller中直接引入dao
1.AdminMapper.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.jz.table.dao.AdminDao"> <select id="login" parameterType="com.jz.table.entity.Admin" resultType="com.jz.table.entity.Admin"> select name,job FROM admin WHERE name = #{name} AND password = #{password} </select> <insert id="addAdmin" parameterType="com.jz.table.entity.Admin"> INSERT INTO admin (name,password,job) VALUES (#{name},#{password},#{job}); </insert> </mapper>
2.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.jz.table.dao.UserDao"> <select id="findall" resultType="com.jz.table.entity.UserInfo"> select * from userinfo </select> <insert id="adduser" parameterType="com.jz.table.entity.UserInfo"> INSERT INTO userinfo(name,age,sex) VALUES (#{name},#{age},#{sex}) </insert> <select id="findByid" parameterType="java.lang.Integer" resultType="com.jz.table.entity.UserInfo"> SELECT * FROM userinfo where id = #{id} </select> <update id="updateUser" parameterType="com.jz.table.entity.UserInfo"> update userinfo SET name=#{name },age =#{age},sex=#{sex} WHERE id = #{id} </update> <delete id="delUser" parameterType="java.lang.Integer"> DELETE from userinfo WHERE id = #{id} </delete> </mapper>
4.页面,在templates文件夹下新建public和user文件夹用来存放公共页面和user操作页面
public文件夹下新建成功、失败提示页
1.success.html
<!DOCTYPE html> <!--引入thymeleaf--> <html lang="en" xmlns:th="http://www.thymeleaf.org"> <head> <meta charset="UTF-8"> <title>操作成功提示页</title> </head> <body> <h1>操作成功</h1> <a href="/index" rel="external nofollow" rel="external nofollow" > 返回首页</a> </body> </html>
2.false.html
<!DOCTYPE html> <html lang="en" xmlns:th="http://www.thymeleaf.org"> <head> <meta charset="UTF-8"> <title>操作失败提示页</title> <script th:src="@{/js/jquery-1.8.0.min.js}"></script> </head> <body> <h1>操作失败,请检查数据重试</h1> <input onclick="history.go(-1)" type="button" value="返回"> </body> </html>
4.2在templates文件夹下新建login和register页面作为登录和注册页面
1.login.html
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>首页</title> <style> /*a标签去下划线和点击不变色,div内容居中*/ a{ text-decoration: none; color: #333333; } #idiv{text-align: center;border-radius: 20px; width: 300px; height: 350px; margin: auto; position: absolute; top: 0; left: 0; right: 0; bottom: 0;} </style> </head> <body> <div id="idiv"> <form action="/gologin" method="post"> 请输入姓名<input id="name" name="name" required="required"><br><br> 请输入密码<input id="password" name="password" type="password" placeholder="仅支持正整数" required="required"><br><br> <input type="submit" value="登录"> <button> <a href="/goregister" rel="external nofollow" >注册</a></button> </form> </div> </body> </html>
2.register.html
<!DOCTYPE html> <html lang="en" xmlns:th="http://www.thymeleaf.org"> <head> <meta charset="UTF-8"> <title>账号注册</title> <script th:src="@{/js/jquery-1.8.0.min.js}"></script> </head> <body> <h2>账号注册</h2> 请输入姓名:<input type="text" id="name"/><br><br> 请输入密码:<input type="password" id="password" placeholder="仅支持整数" /><br><br> 请确认密码:<input type="password" id="passwordTwo" placeholder="仅支持整数"/><br><br> 请选择角色:<select id="job" style="width: 173px"> <option value="管理员">管理员</option> </select><br><br> <button onclick="register()">注册</button> </body> <script> function register() { var name = $("#name").val(); var password1 = $("#password").val(); var password2 = $("#passwordTwo").val(); var job = $("#job").val(); if (Number(password1) == Number(password2)){ $.post("/register",{name:name,password:password1,job:job},function (res) { if (res ==true){ alert("注册成功"); window.location.href ="/login"; } else { alert("注册失败,请检查数据重试"); } }) }else { alert("两次密码不一致!"); } } </script> </html>
3.controller中代码
@Controller public class TestController { @Resource private AdminDao ad; @Resource private UserDao ud; @RequestMapping("/login")//主页 public String index(){ return "login"; } @RequestMapping("/goregister")//去注册页面 public String goregister(){ return "register"; } @RequestMapping("/register")//注册 @ResponseBody public boolean register(Admin admin){ int i = ad.addAdmin(admin); if (i>0){ return true; }else { return false; } } @RequestMapping("/gologin")//登录获取用户信息存到seccion public String gologin(Admin admin,HttpServletRequest request,Model model){ Admin aa = ad.login(admin); if (aa==null){ return "public/false"; } HttpSession session = request.getSession(); session.setAttribute("aname",admin.getName()); session.setAttribute("apassword",admin.getPassword()); List<UserInfo> userlist = ud.findall(); model.addAttribute("admin",aa); model.addAttribute("alist",userlist); return "user/index"; } @RequestMapping("/index")//从其他页面操作后返回列表页面(重复登录) public String login(Admin admin,Model model,HttpServletRequest request){ HttpSession session = request.getSession(); admin.setName((String) session.getAttribute("aname")); admin.setPassword((Integer) session.getAttribute("apassword")); Admin aa = ad.login(admin); List<UserInfo> userlist = ud.findall(); model.addAttribute("admin",aa); model.addAttribute("alist",userlist); return "user/index"; } }
4.3user文件夹下新建index,addUser,updateUser页面,作为主页,添加,修改页面
1.index.html
<!DOCTYPE html> <html lang="en" xmlns:th="http://www.thymeleaf.org"> <head> <meta charset="UTF-8"> <title>首页</title> <style>a{text-decoration:none}</style> <script th:src="@{/js/jquery-1.8.0.min.js}"></script> </head> <body> 欢迎你 :<input th:value="${admin.name}" style="border: none; outline: none"/><br><br><br><br> <h2>人员信息维护</h2> <table width="888" border="1"> <thead> <tr> <th>id</th> <th>姓名</th> <th>年龄</th> <th>性别</th> <th>操作</th> </tr> <tr th:each="user:${alist}"> <td align="center" th:text="${user.id}"></td> <td align="center" th:text="${user.name}"></td> <td align="center" th:text="${user.age}"></td> <td align="center" th:text="${user.sex}"></td> <td align="center"><a th:href="@{'/goupdate/'+${user.id}}" rel="external nofollow" >修改</a> <a th:href="@{'/godel/'+${user.id}}" rel="external nofollow" >删除</a> </td> </tr> </thead> </table> <button><a href="/goadd" rel="external nofollow" >添加</a></button> </body> </html>
2.addUser.html
<!DOCTYPE html> <html lang="en" xmlns:th="http://www.thymeleaf.org"> <head> <meta charset="UTF-8"> <title>添加用户</title> <script th:src="@{/js/jquery-1.8.0.min.js}"></script> </head> <body> <h2>我是添加页面</h2> 请输入姓名:<input id="name" name="name" type="text" /><br><br> 请输入年龄:<input id="age" name="age" type="text" /><br><br> 请选择性别:<select id="sex" name="sex" style="width: 173px"> <option value="男">男</option> <option value="女">女</option> </select><br><br> <button onclick="goadd()" name="sub" id="sub">添加</button> <button name="button" onclick="javascript:history.back(-1);">返回</button> </body> <script> function goadd() { var name = $("#name").val(); var age = $("#age").val(); var sex = $("#sex").val(); $.post("/addUser",{name:name,age:age,sex:sex},function (res) { if (res==true){ alert("添加成功") window.location.href ="/index"; }else { alert("添加失败,请检查数据重试!"); } }) } </script> </html>
3.updateUser.html
<!DOCTYPE html> <html lang="en" xmlns:th="http://www.thymeleaf.org"> <head> <meta charset="UTF-8"> <title>修改用户</title> <script th:src="@{/js/jquery-1.8.0.min.js}"></script> </head> <body> <h2>这是修改页面</h2> <input type="hidden" id="id" th:value="${user.id}"><br><br> 请输入姓名:<input id="name" th:value="${user.name}"/><br><br> 请输入年龄:<input id="age" th:value="${user.age}"/><br><br> 请选择性别:<select id="sex" style="width: 173px"> <option value="男">男</option> <option value="女">女</option> </select><br><br> <button onclick="goupdate()">修改</button> <button name="button" onclick="javascript:history.back(-1);">返回</button> </body> <script> function goupdate() { var id=$("#id").val(); var name = $("#name").val(); var age = $("#age").val(); var sex = $("#sex").val(); $.post("/update",{id:id,name:name,age:age,sex:sex},function (res) { if (res==true) { alert("修改成功"); window.location.href="/index" rel="external nofollow" rel="external nofollow" ; }else { alert("修改失败,请检查数据重试!"); } }) } </script> </html>
4.controller中代码
@RequestMapping("/goadd")//去添加页面 public String goadd(){ return "user/addUser"; } @RequestMapping("/addUser")//添加信息 @ResponseBody public boolean addUser(UserInfo user){ int i = ud.adduser(user); if (i>0){ return true; }else { return false; } } @RequestMapping("/goupdate/{id}")//去修改页面,回显数据 public String goupdate(@PathVariable("id") int id,Model model){ UserInfo user = ud.findByid(id); model.addAttribute("user",user); return "user/updateUser"; } @RequestMapping("/update")//修改 @ResponseBody public boolean updateUser(UserInfo user){ int i = ud.updateUser(user); if (i>0){ return true; }else { return false; } } @RequestMapping("/godel/{id}")//删除 public String delUser(@PathVariable("id") Integer id){ ud.delUser(id); return "public/success"; }
5.完整controller代码
package com.jz.table.controller; import com.jz.table.dao.AdminDao; import com.jz.table.dao.UserDao; import com.jz.table.entity.Admin; import com.jz.table.entity.UserInfo; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import javax.annotation.Resource; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpSession; import java.util.List; @Controller public class TestController { @Resource private AdminDao ad; @Resource private UserDao ud; @RequestMapping("/login")//主页 public String index(){ return "login"; } @RequestMapping("/goregister")//去注册页面 public String goregister(){ return "register"; } @RequestMapping("/register")//注册 @ResponseBody public boolean register(Admin admin){ int i = ad.addAdmin(admin); if (i>0){ return true; }else { return false; } } @RequestMapping("/gologin")//登录获取用户信息存到seccion public String gologin(Admin admin,HttpServletRequest request,Model model){ Admin aa = ad.login(admin); if (aa==null){ return "public/false"; } HttpSession session = request.getSession(); session.setAttribute("aname",admin.getName()); session.setAttribute("apassword",admin.getPassword()); List<UserInfo> userlist = ud.findall(); model.addAttribute("admin",aa); model.addAttribute("alist",userlist); return "user/index"; } @RequestMapping("/index")//从其他页面操作后返回列表页面(重复登录) public String login(Admin admin,Model model,HttpServletRequest request){ HttpSession session = request.getSession(); admin.setName((String) session.getAttribute("aname")); admin.setPassword((Integer) session.getAttribute("apassword")); Admin aa = ad.login(admin); List<UserInfo> userlist = ud.findall(); model.addAttribute("admin",aa); model.addAttribute("alist",userlist); return "user/index"; } @RequestMapping("/goadd")//去添加页面 public String goadd(){ return "user/addUser"; } @RequestMapping("/addUser")//添加信息 @ResponseBody public boolean addUser(UserInfo user){ int i = ud.adduser(user); if (i>0){ return true; }else { return false; } } @RequestMapping("/goupdate/{id}")//去修改页面,回显数据 public String goupdate(@PathVariable("id") int id,Model model){ UserInfo user = ud.findByid(id); model.addAttribute("user",user); return "user/updateUser"; } @RequestMapping("/update")//修改 @ResponseBody public boolean updateUser(UserInfo user){ int i = ud.updateUser(user); if (i>0){ return true; }else { return false; } } @RequestMapping("/godel/{id}")//删除 public String delUser(@PathVariable("id") Integer id){ ud.delUser(id); return "public/success"; } }
效果如图
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