java版spring cloud+spring boot+redis多租户社交电子商务平台（三）SpringBoot用JdbcTemplates访问Mysql...-白红宇

准备工作

jdk 1.8

maven 3.0

idea

mysql

springcloud b2b2c电子商务社交平台源码请加企鹅求求：一零三八七七四六二六。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');复制代码

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
              
     复制代码

引入mysql连接类和连接池：


                 
      
       mysql
                  
      
       mysql-connector-java
                  
      
       runtime
              
              
                 
      
       com.alibaba
                  
      
       druid
                  
      
       1.0.29
              
     复制代码

开启web:


                 
      
       org.springframework.boot
                  
      
       spring-boot-starter-web
              
     复制代码

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复制代码

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 }复制代码

dao层

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

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;        }    }}复制代码

Spring Cloud大型企业分布式微服务云构建的B2B2C电子商务平台源码请加企鹅求求：一零三八七七四六二六