1.新建maven项目(具体的新建过程就不细说了)

2.添加maven依赖，也就是在pom.xml文件添加项目的依赖jar包：

       
      
       4.0.0
        
      
       springboot-test
        
      
       bootTest
        
      
       war
        
      
       0.0.1-SNAPSHOT
        
      
       bootTest Maven Webapp
        
      
       http://maven.apache.org
              
           
              
       
        org.springframework.boot
               
       
        spring-boot-starter-parent
               
       
        1.4.0.RELEASE
               
           
          
              
               
                   
        
         org.springframework.boot
                    
        
         spring-boot-starter-web
                
                       
               
                   
        
         org.springframework.boot
                    
        
         spring-boot-starter-data-jpa
                
                          
                  
                   
        
         mysql
                    
        
         mysql-connector-java
                
                       
               
                   
        
         org.springframework.boot
                    
        
         spring-boot-starter-jdbc
                
                        
                   
        
         org.springframework.boot
                    
        
         spring-boot-starter-test
                    
        
         test
                
                       
               
                  
        
         org.springframework.boot
                   
        
         spring-boot-starter-thymeleaf
                
           
                  
              
       
        spring-boot-data-jpa
               
                   
                        
         
          org.apache.maven.plugins
                         
         
          maven-compiler-plugin
                         
                             
          1.8                    
          
           1.8
                          
                     
                
           
      
     

3.在application.properties(放在resources目录下)中添加配置信息：

##JDBC Setting(Mysql的配置信息)spring.datasource.driver-class-name=com.mysql.jdbc.Driverspring.datasource.url=jdbc:mysql://127.0.0.1:3306/boottest?useUnicode=true&characterEncoding=utf-8spring.datasource.username=rootspring.datasource.password=rootspring.datasource.max-idle=10spring.datasource.max-wait=10000spring.datasource.min-idle=5spring.datasource.initial-size=5 ##服务器的配置信息server.port=8080server.session.timeout=10server.tomcat.uri-encoding=UTF-8## SpringDataJPA Settings #spring.jpa.generate-ddl:true ----->将这个属性设置为TRUE，就是设置数据库自动更新，即但数据库没有实体所对应的的表时，自动创建，有对应的表时执行更新，和hibernate的hbm2ddl.auto:updata功能差不多spring.jpa.generate-ddl: truespring.jpa.show-sql: truespring.jpa.properties.hibernate.format_sql: false#设置模板位置，即html文件的存放位置spring.thymeleaf.prefix=classpath:/templates/

4.项目的文件目录

5.测试

5.1 实体类User

package com.yxl.springboot.entity;import javax.persistence.Entity;import javax.persistence.GeneratedValue;import javax.persistence.Id;import javax.persistence.Table;@Entity@Table(name = "user") //声明实体对应得表，如果没有则创建(前提是application.properties文件中有相应的配置)public class User {    @Id    @GeneratedValue    private int id;    private String name;    private String password;            public User() {        super();        // TODO Auto-generated constructor stub    }    public User(int id, String name, String password) {        super();        this.id = id;        this.name = name;        this.password = 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;    }}

5.2 Mapper（Dao）层

package com.yxl.springboot.mapper;import org.springframework.data.jpa.repository.JpaRepository;import com.yxl.springboot.entity.User;//继承JpaRepository类public interface UserMapper extends JpaRepository
     
      {        public User findByName(String name);}
     

5.3 controller层

package com.yxl.springboot.controller;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.RequestMapping;import com.yxl.springboot.entity.User;import com.yxl.springboot.mapper.UserMapper;@Controllerpublic class SpringBootTestController {    @Autowired    private UserMapper userMapper;        @RequestMapping(value = "/find")    public String springBootTest(Model model) {        User findByName = userMapper.findByName("test");        model.addAttribute("user", findByName);        return "test";    }        @RequestMapping(value = "/all")    public String selectAll(Model model) {         List
     
       selectAll = userMapper.findAll();         model.addAttribute("user", selectAll);        return "test1";    }    }
     

 

5.4 test.html

     
哈哈哈！成功了!
     

5.5 test1.html

     
哈哈哈！成功了!
     
          
               
                    
编号
                    
姓名
                    
密码
               
          
          
                              
                    
                    
                    
               
          
     
 

5.5 程序入口Application.java

package com.yxl.springboot;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplicationpublic class Application {    public static void main(String[] args) {         SpringApplication.run(Application.class, args);    }}

5.6 数据库数据

5.7 运行结果

test.html

test1.html

参考博客：