Spring Boot+MySql 登录注册

实体类：

package com.example.demo;import javax.persistence.Entity;import javax.persistence.GeneratedValue;import javax.persistence.Id;/** * 实体类 * @author linziyu * */@Entity(name="table_user")public class UserEntity {    @Id    @GeneratedValue    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;    }}

数据操作：

package com.example.demo;import org.springframework.data.repository.CrudRepository;import org.springframework.stereotype.Repository;@Repositorypublic interface UserDao extends CrudRepository
   
    {	public UserEntity findByUsernameAndPassword(String username,String password);}

控制层：

package com.example.demo;import javax.servlet.http.HttpServletRequest;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;@Controller@RequestMapping("/front/*")public class IndexController {    @Autowired    private UserDao userDao;    @RequestMapping("/index")    public String index() {        return "index";    }    @RequestMapping("/register")    public String register(){        return "register";    }    @RequestMapping("/addregister")    public String register(HttpServletRequest request){        String username = request.getParameter("username");        String password = request.getParameter("password");        String password2 = request.getParameter("password2");        if (password.equals(password2)){            UserEntity userEntity = new UserEntity();            userEntity.setUsername(username);            userEntity.setPassword(password);            userDao.save(userEntity);            return "index";        }else {            return "register";        }    }        @RequestMapping("/login")      public String login(){          return "login";      }          @RequestMapping("/addlogin")      public String login(HttpServletRequest request){          String username = request.getParameter("username");          String password = request.getParameter("password");          UserEntity userEntity = userDao.findByUsernameAndPassword(username,password);          String str = "";          if (userEntity !=null){              str = "index";          }else {              str = "login";          }          return str;      }  }

配置文件：

server.port=8082spring.datasource.url = jdbc:mysql://localhost:3306/flask1spring.datasource.username = rootspring.datasource.password = 123spring.datasource.driverClassName = com.mysql.jdbc.Driver# Specify the DBMSspring.jpa.database = MYSQL# Show or not log for each sql queryspring.jpa.show-sql = true# Hibernate ddl auto (create, create-drop, update)spring.jpa.hibernate.ddl-auto = update# Naming strategy\uFF01spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.ImprovedNamingStrategy# stripped before adding them to the entity manager)spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect#\u5F00\u53D1\u65F6\u5EFA\u8BAE\u5173\u95ED\u7F13\u5B58spring.thymeleaf.cache=falsespring.thymeleaf.prefix=classpath:/templates/spring.thymeleaf.suffix=.htmlspring.thymeleaf.mode=HTML5spring.thymeleaf.encoding=utf-8spring.thymeleaf.content-type=text/html

Pom.xml:


   
   	
    
     4.0.0
    	
    
     com.example
    	
    
     login
    	
    
     0.0.1-SNAPSHOT
    	
    
     jar
    	
    
     login
    	
    
     Demo project for Spring Boot
    	
    		
     
      org.springframework.boot
     		
     
      spring-boot-starter-parent
     		
     
      1.5.7.RELEASE
     		
      
     	
    	
    		
     
      UTF-8
     		
     
      UTF-8
     		
     
      1.7
     	
    	
    			
     		    
      
       org.springframework.boot
      		    
      
       spring-boot-devtools
      		    
      
       true
      		    
      
       true
      			
     		
     			
      
       org.springframework.boot
      			
      
       spring-boot-starter
      		
     		
     			
      
       mysql
      			
      
       mysql-connector-java
      			
      
       runtime
      		
     		
     			
      
       org.springframework.boot
      			
      
       spring-boot-starter-test
      			
      
       test
      		
     		 
             		
      
       org.springframework.boot
              		
      
       spring-boot-starter-thymeleaf
            	
           	    	 
            		 
      
       org.springframework.boot
              			
      
       spring-boot-starter-data-jpa
           		 
       	
    	
    		
     			
      				
       
        org.springframework.boot
       				
       
        spring-boot-maven-plugin

注册页面：

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