SpringBoot+MyBatisPlus操作Oracle数据库

曾经终败给现在 2022-09-10 00:10 449阅读 0赞

## 1.导入依赖 ##

<dependency>
                <groupId>com.baomidou</groupId>
                <artifactId>mybatis-plus-boot-starter</artifactId>
                <version>3.4.2</version>
            </dependency>
            
            <dependency>
                <groupId>com.oracle.database.jdbc</groupId>
                <artifactId>ojdbc8</artifactId>
                <version>12.2.0.1</version>
            </dependency>

## 2.编辑application.properties配置文件 ##

spring.datasource.driver-class-name=oracle.jdbc.OracleDriver
    spring.datasource.url=jdbc:oracle:thin:@127.0.0.1:1521/服务名
    spring.datasource.username=xiaoming
    spring.datasource.password=123456

工程目录结构：  
![在这里插入图片描述][watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAWGVvbl9DQw_size_18_color_FFFFFF_t_70_g_se_x_16]

## 3.在启动类加上注解 ##

package com.example.demo1;
    
    import org.mybatis.spring.annotation.MapperScan;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    
    @SpringBootApplication
    @MapperScan("com.example.demo1.mapper")
    public class Demo1Application { 
        public static void main(String[] args) { 
            SpringApplication.run(Demo1Application.class, args);
        }
    }

## 4.编辑WarnRegionWhiteService接口 ##

package com.example.demo1.service;
    
    import com.baomidou.mybatisplus.extension.service.IService;
    import com.example.demo1.entity.WarnRegionWhite;
    
    import java.util.List;
    
    public interface WarnRegionWhiteService extends IService<WarnRegionWhite> { 
        List<WarnRegionWhite> selectAll();
    }

## 5.编辑WarnRegionWhiteServiceImpl实现类 ##

package com.example.demo1.service.impl;
    
    import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
    import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
    import com.example.demo1.entity.WarnRegionWhite;
    import com.example.demo1.mapper.WarnRegionWhiteMapper;
    import com.example.demo1.service.WarnRegionWhiteService;
    import org.springframework.stereotype.Service;
    
    import java.util.List;
    
    @Service
    public class WarnRegionWhiteServiceImpl extends ServiceImpl<WarnRegionWhiteMapper,WarnRegionWhite> implements WarnRegionWhiteService { 
        @Override
        public List<WarnRegionWhite> selectAll() { 
            QueryWrapper<WarnRegionWhite> qw = new QueryWrapper<>();
            qw.eq("id",4960);
            List<WarnRegionWhite> warnRegionWhiteList = baseMapper.selectList(qw);
            return warnRegionWhiteList;
        }
    }

## 6.编辑WarnRegionWhiteMapper接口 ##

package com.example.demo1.mapper;
    
    import com.baomidou.mybatisplus.core.mapper.BaseMapper;
    import com.example.demo1.entity.WarnRegionWhite;
    import org.apache.ibatis.annotations.Mapper;
    import org.springframework.stereotype.Repository;
    
    @Repository
    @Mapper
    public interface WarnRegionWhiteMapper extends BaseMapper<WarnRegionWhite> { 
    
    }

## 7.编辑WarnRegionWhite实体类 ##

package com.example.demo1.entity;
    
    import com.baomidou.mybatisplus.annotation.TableName;
    import lombok.Data;
    import java.io.Serializable;
    
    @Data
    @TableName("WORK.WARN_REGION_WHITE")
    public class WarnRegionWhite implements Serializable { 
        //成员属性
    }

## 8.编辑Controller类 ##

package com.example.demo1.controller;
    
    import com.example.demo1.entity.WarnRegionWhite;
    import com.example.demo1.service.WarnRegionWhiteService;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    import java.util.List;
    
    @RestController
    public class TestController { 
        @Autowired
        WarnRegionWhiteService warnRegionWhiteService;
        @GetMapping("/getOne")
        public List<WarnRegionWhite> getOne(){ 
            return warnRegionWhiteService.selectAll();
        }
    }

## 9.打开浏览器 ##

在地址栏输入http://127.0.0.1:8080/getOne 即可请求

[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAWGVvbl9DQw_size_18_color_FFFFFF_t_70_g_se_x_16]: /images/20220829/82c06bd871d34c50a779aa1597629ea6.png