SpringBoot -登录注册

SpringBoot -登录注册

在前面的学习中我们学会简单创建一个springboot项目，那么现在就开始学习如何做注册登录了

工具springboot +maven +hibernate+mysql 

参考了https://blog.csdn.net/coder_py/article/details/78125589

1、项目结构  

• html 分为主页面index、注册register、登录login 和 登录成功success页面。

2、pom文件

	4.0.0

	com.online.shixun
	HelloSpringboot
	0.0.1-SNAPSHOT
	jar

	HelloSpringboot
	Demo project for Spring Boot

	
		org.springframework.boot
		spring-boot-starter-parent
		2.0.0.RELEASE
		 
	

	
		UTF-8
		UTF-8
		1.8
	

	
		
			org.springframework.boot
			spring-boot-devtools
			true
			true
		

		
			org.springframework.boot
			spring-boot-starter
		
		
		
			org.springframework.boot
			spring-boot-starter-thymeleaf
		

		
			org.springframework.boot
			spring-boot-starter-web
		

		
			org.springframework.boot
			spring-boot-starter-test
			test
		

		
		
			org.springframework.boot
			spring-boot-starter-data-jpa
		
		
			mysql
			mysql-connector-java
		

	

	
		
			
				org.springframework.boot
				spring-boot-maven-plugin
			
		
	

3、编写实体User类

package com.online.shixun.entity;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

@Entity(name = "t_user")
public class User {

	@Id
	@GeneratedValue(strategy = GenerationType.IDENTITY)
	private Long id;

	private String username;

	private String password;

	public Long getId() {
		return id;
	}
	public void setId(Long id) {
		this.id = id;
	}
	public String getUsername() {
		return username;
	}
	public void setUsername(String username) {
		this.username = username;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
}

4、DAO层

package com.online.shixun.dao;

import java.util.List;

import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

import com.online.shixun.entity.User;

@Repository
public interface UserDao extends JpaRepository {

	public User findByUsernameAndPassword(String username, String password);

	public List findByUsername(String username);

}

5、Service层

package com.online.shixun.service;

import java.util.List;

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

import com.online.shixun.dao.UserDao;
import com.online.shixun.entity.User;

@Service
public class UserService {

	@Autowired
	UserDao userDao;

	public User FindNameAndPsw(String username, String password) {
		return userDao.findByUsernameAndPassword(username, password);
	}
	public void save(User user1) {
		userDao.save(user1);
	}
	public List findByName(String username) {
		return userDao.findByUsername(username);
	}
}

6、Controller类

package com.online.shixun.controller;

import javax.servlet.http.HttpServletRequest;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import com.online.shixun.entity.User;
import com.online.shixun.service.UserService;

@Controller
@RequestMapping("/front/*")
public class UserController {

	@Autowired
	UserService userService;

	@RequestMapping("/")
	public String index() {
		return "index";
	}

	/**
	 * 去注册页面
	 * 
	 * @return
	 */
	@RequestMapping("/register")
	public String register() {
		return "register";
	}

	/**
	 * 执行注册 成功后登录页面 否则调回注册页面
	 * 
	 * @param request
	 * @param user
	 * @return
	 */
	@RequestMapping("/doregister")
	public String register(HttpServletRequest request, User user) {
		String username = request.getParameter("username");
		String password = request.getParameter("password");
		String password2 = request.getParameter("password2");
		if (password.equals(password2)) {
			if (registerUser(username) == true) {
				User user1 = new User();
				user1.setUsername(username);
				user1.setPassword(password);
				userService.save(user1);
				return "login";
			} else {
				return "register";
			}
		} else {
			return "register";
		}
	}

	public Boolean registerUser(String username) {
		Boolean a = true;
		if (userService.findByName(username).isEmpty()) {
			return a;
		} else {
			return false;
		}
	}

	/**
	 * 去登录页面
	 * 
	 * @return
	 */
	@RequestMapping("/login")
	public String login() {
		return "login";
	}

	/**
	 * 执行登录
	 * 
	 * @param request
	 * @return
	 */
	@RequestMapping("/dologin")
	public String login(HttpServletRequest request) {
		String username = request.getParameter("username");
		String password = request.getParameter("password");
		User user = userService.FindNameAndPsw(username, password);
		String str = "";
		if (user != null) {
			str = "success";
		} else {
			str = "login";
		}
		return str;
	}

}

7、application.properties配置文件

server.port=8084

spring.datasource.url = jdbc:mysql://localhost:3306/test
spring.datasource.username = root
spring.datasource.password = root
spring.datasource.driverClassName = com.mysql.jdbc.Driver

spring.jpa.database = MYSQL
spring.jpa.show-sql = true
spring.jpa.hibernate.ddl-auto = update
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect

spring.thymeleaf.cache=false
spring.thymeleaf.prefix=classpath:/templates/
spring.thymeleaf.suffix=.html
spring.thymeleaf.mode=HTML5
spring.thymeleaf.encoding=utf-8
spring.thymeleaf.servlet.content-type=text/html

8、静态页面

index.html

    点击这里去登录点击这里去注册

login.html

	

		

		    用户名
		
		

			密    码

		
		

		

			没有账号？去注册
			重置
			登录
		
	

register.html

	

		

			用户名称
 

		
		

			登录密码
 

		
		

			确认密码

			

		
		

			已有账号去登录 
		
	

success.html

登录成功！

感觉自己还是收获了不少的东西，虽然有许多东西还是不太清楚，勉勉强强也还是把项目搭建然后跑起来了，流程是清楚了，有点时候老是犯很低级的错误，刚开始做的时候发现有问题，结果是自己mysql数据库没开，真为自己的智商着急，希望以后不在犯同样的错误。没有写过大框架的的小女孩看什么都觉得难