准备工作

• jdk 1.8
• maven 3.0
• idea
• mysql

初始化mysql:

-- create table `account`DROP TABLE `account` IF EXISTSCREATE TABLE `account` (  `id` int(11) NOT NULL AUTO_INCREMENT,  `name` varchar(20) NOT NULL,  `money` double DEFAULT NULL,  PRIMARY KEY (`id`)) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;INSERT INTO `account` VALUES ('1', 'aaa', '1000');INSERT INTO `account` VALUES ('2', 'bbb', '1000');INSERT INTO `account` VALUES ('3', 'ccc', '1000');

创建工程

引入依赖：

在pom文件引入spring-boot-starter-jdbc的依赖：

                
     
      org.springframework.boot
                 
     
      spring-boot-starter-jdbc
             
    

引入mysql连接类和连接池：

                
     
      mysql
                 
     
      mysql-connector-java
                 
     
      runtime
             
             
                
     
      com.alibaba
                 
     
      druid
                 
     
      1.0.29
             
    

开启web:

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

配置相关文件

在application.properties文件配置mysql的驱动类，数据库地址，数据库账号、密码信息。

spring.datasource.driver-class-name=com.mysql.jdbc.Driverspring.datasource.url=jdbc:mysql://localhost:3306/testspring.datasource.username=rootspring.datasource.password=123456

通过引入这些依赖和配置一些基本信息，springboot就可以访问数据库类。

具体编码

实体类

public class Account {    private int id ;    private String name ;    private double money; ....省略了getter. setter }

dao层

public interface IAccountDAO {    int add(Account account);     int update(Account account);     int delete(int id);     Account findAccountById(int id);     List
    
      findAccountList();}
    

具体的实现类：

package com.forezp.dao.impl; import com.forezp.dao.IAccountDAO;import com.forezp.entity.Account;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.jdbc.core.BeanPropertyRowMapper;import org.springframework.jdbc.core.JdbcTemplate;import org.springframework.stereotype.Repository; import java.util.List; /** * Created by fangzhipeng on 2017/4/20. */@Repositorypublic class AccountDaoImpl implements IAccountDAO {     @Autowired    private JdbcTemplate jdbcTemplate;    @Override    public int add(Account account) {        return jdbcTemplate.update("insert into account(name, money) values(?, ?)",              account.getName(),account.getMoney());     }     @Override    public int update(Account account) {        return jdbcTemplate.update("UPDATE  account SET NAME=? ,money=? WHERE id=?",                account.getName(),account.getMoney(),account.getId());    }     @Override    public int delete(int id) {        return jdbcTemplate.update("DELETE from TABLE account where id=?",id);    }     @Override    public Account findAccountById(int id) {        List
    
      list = jdbcTemplate.query("select * from account where id = ?", new Object[]{id}, new BeanPropertyRowMapper(Account.class));        if(list!=null && list.size()>0){            Account account = list.get(0);            return account;        }else{            return null;        }    }     @Override    public List
     
       findAccountList() {        List
      
        list = jdbcTemplate.query("select * from account", new Object[]{}, new BeanPropertyRowMapper(Account.class));        if(list!=null && list.size()>0){            return list;        }else{            return null;        }    }}
      
     
    

完整项目的源码来源 技术支持1791743380