完整代码下载地址: https://download.csdn.net/download/qq_35207086/87680396
第一步:建立简单的项目
第二步:建一个简单的数据表
第三步:配置文件如下:
pom.xml文件配置:
4.0.0
org.springframework.boot
spring-boot-starter-parent
2.4.5
com.wei
demo01
0.0.1-SNAPSHOT
demo01
Demo project for Spring Boot
1.8
org.springframework.boot
spring-boot-starter-jdbc
org.springframework.boot
spring-boot-starter-thymeleaf
org.springframework.boot
spring-boot-starter-web
org.mybatis.spring.boot
mybatis-spring-boot-starter
2.1.0
mysql
mysql-connector-java
8.0.24
runtime
org.springframework.boot
spring-boot-starter-test
test
junit
junit
test
org.projectlombok
lombok
true
org.springframework.boot
spring-boot-maven-plugin
org.projectlombok
lombok
application.properties文件配置:
#改变端口号:
server.port=8080
#给整个项目加个前缀,多个项目就不会重复:
#server.servlet.context-path=/first
#school.grade=3
#school.classNum=4
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.password=root
spring.datasource.username=root
spring.datasource.url=jdbc:mysql://localhost:3306/demo?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8&useSSL=true
spring.thymeleaf.prefix=classpath:/templates/
#mapper.mappers=tk.mybatis.mapper.common.Mapper
#mapper.not-empty=true
项目目录如下:
LoginController.java文件:
注意:@Controller只能用这个,不能用@RestController
package com.wei.demo01.controller;
import com.wei.demo01.entity.UserBean;
import com.wei.demo01.service.UserService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import javax.annotation.Resource;
@Slf4j
@Controller
public class LoginController {
//将Service注入Web层
@Resource
UserService userService;
//实现登录
@RequestMapping("/login")
public String show(){
return "login";
}
@RequestMapping(value = "/loginIn",method = RequestMethod.POST)
public String login(String name,String password){
UserBean userBean = userService.LoginIn(name, password);
log.info("name:{}",name);
log.info("password:{}",password);
if(userBean!=null){
return "success";
}else {
return "error";
}
}
@RequestMapping("/signup")
public String disp(){
return "signup";
}
//实现注册功能
@RequestMapping(value = "/register",method = RequestMethod.POST)
public String signUp(String name,String password){
userService.Insert(name, password);
return "success";
}
}
UserBean.java文件
package com.wei.demo01.entity;
import java.io.Serializable;
public class UserBean implements Serializable {
private Integer id;
private String name;
private String password;
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 String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
UserMapper接口文件:
注意:我在这里为偷懒,开始加入了@Mapper注解,目的就是为了不再写mapper映射文件(那个xml写的是真的是太慢了)
package com.wei.demo01.mapper;
import com.wei.demo01.entity.UserBean;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Repository;
@Mapper
public interface UserMapper {
//查询,可以实现登录功能
@Select("SELECT * FROM user WHERE name = #{name} AND password = #{password}")
UserBean getInfo(@Param("name") String name, @Param("password") String password);
//多个参数要加@Param修饰
//增加,可以实现注册功能
@Insert("insert into user(name,password)values(#{name},#{password})")
void saveInfo(@Param("name") String name, @Param("password") String password);
}
UserService.java文件
package com.wei.demo01.service;
import com.wei.demo01.entity.UserBean;
import com.wei.demo01.mapper.UserMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
@Service
public class UserService {
//将dao层属性注入service层
@Resource
private UserMapper userMapper;
public UserBean LoginIn(String name, String password) {
return userMapper.getInfo(name,password);
}
public void Insert(String name,String password){
userMapper.saveInfo(name, password);
}
}
下面都是一些静态html网页:
下面就把所有的代码按顺序依次放在一个框子里面;
error
登陆失败!
index
你好啊
login
账号:
密码:
注册成功
请输入姓名:
请输入密码:
success
欢迎,恭喜登陆成功/注册成功
最后登录效果展示:
注册效果展示:
注册成功!数据库更新成功!
![](https://img-blog.csdnimg.cn/20210522172347190.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM1MjA3MDg2,size_16,color_FFFFFF,t_70)
有网友说我这个注册按钮打不开,跳转不到注册页面,那我在这里更新一下:
在登录页面中加入以下内容即可:
![](https://img-blog.csdnimg.cn/img_convert/e2b7e0b293fd7e25712f59d1561984ab.png)
OK!完成!感谢大家的阅览,希望能够帮助你!!!
如果帮助到你,打赏一点吧,感谢
![](https://img-blog.csdnimg.cn/055a2b00390e438c9b42f7a63d1f1c4e.jpeg)
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