Spring Boot整合MyBatis连接Oracle数据库的步骤全纪录

Z时代
2024-01-10
分类：综合

前言

本文主要分享了Spring Boot整合MyBatis连接Oracle数据库的相关内容，下面话不多说了，直接来详细的步骤吧。

步骤如下：

1、Spring Boot项目添加MyBatis依赖和Oracle驱动：


<dependency>
 <groupId>org.mybatis.spring.boot</groupId>
 <artifactId>mybatis-spring-boot-starter</artifactId>
 <version>1.3.2</version>
</dependency>
<dependency>
 <groupId>com.oracle</groupId>
 <artifactId>ojdbc6</artifactId>
 <version>11.2.0.1.0</version>
</dependency>

2、配置application.properties：

#spring.datasource.driver-class-name=com.mysql.jdbc.Driver

#spring.datasource.url=jdbc:mysql://localhost:3306/ems

#spring.datasource.username=root

#spring.datasource.password=root

mybatis.mapper-locations=classpath:/com/example/demo/mapper/*.xml

server.port=9090

spring.datasource.driver-class-name=oracle.jdbc.driver.OracleDriver

spring.datasource.url=jdbc:oracle:thin:@134.32.9.247:1700/mbss

spring.datasource.username=dbrtadm

spring.datasource.password=dbrtadm

3、新建实体类，注意与数据库字段对应：


package com.example.demo.entity;
import lombok.Getter;
import lombok.Setter;
@Getter
@Setter
public class User {
 public int id;
 public String order_id;
}

4、新建mapper（xml）：


<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.example.demo.dao.UserMapper"> 
 <select id = "listUser" resultType="com.example.demo.entity.User">
  select * from t_ps_order_qr
 </select>
</mapper>

5、新建dao接口：


package com.example.demo.dao;
import java.util.List;
import org.apache.ibatis.annotations.Mapper;
@Mapper
public interface UserMapper {
 public List listUser();
}

　此处应加@Mapper注解，interface的方法名对应xml的标签id。

6、新建controller：


package com.example.demo.controller;
import java.util.List;
import javax.annotation.Resource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import com.example.demo.dao.UserMapper;
@RestController
public class TestController {
 @Resource
 UserMapper um;
 @GetMapping("/listu")
 public List listUser() {
  return um.listUser();
 }
}