阿里云oss

1导包

 <dependencies>
        <!--aliyunOSS-->
        <dependency>
            <groupId>com.aliyun.oss</groupId>
            <artifactId>aliyun-sdk-oss</artifactId>
<!--            <version>2.8.3</version>-->
        </dependency>
<!--        <aliyun-sdk-oss.version>3.1.0</aliyun-sdk-oss.version>-->
        <dependency>
            <groupId>com.atguigu</groupId>
            <artifactId>common_utils</artifactId>
            <version>0.0.1-SNAPSHOT</version>
            <scope>compile</scope>
        </dependency>

2去阿里云网站 对象存储开启oss 并且开启asscess key

3 得到需要的几个参数（

//定义公开静态常量
public static String END_POIND;
public static String ACCESS_KEY_ID;
public static String ACCESS_KEY_SECRET;
public static String BUCKET_NAME;

）

4把参数包装成工具类

package com.jc.oss.utils;

import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

//当项目已启动，spring接口，spring加载之后，执行接口一个方法
@Component
public class ConstantPropertiesUtils implements InitializingBean {

    //读取配置文件内容
    @Value("${aliyun.oss.file.endpoint}")
    private String endpoint;

    @Value("${aliyun.oss.file.keyid}")
    private String keyId;

    @Value("${aliyun.oss.file.keysecret}")
    private String keySecret;

    @Value("${aliyun.oss.file.bucketname}")
    private String bucketName;

    //定义公开静态常量
    public static String END_POIND;
    public static String ACCESS_KEY_ID;
    public static String ACCESS_KEY_SECRET;
    public static String BUCKET_NAME;

    @Override
    public void afterPropertiesSet() throws Exception {
        END_POIND = endpoint;
        ACCESS_KEY_ID = keyId;
        ACCESS_KEY_SECRET = keySecret;
        BUCKET_NAME = bucketName;
    }
}

 

5编写实现类 根据官网教程来写

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package com.jc.oss.service.impl;   import com.aliyun.oss.OSS; import com.aliyun.oss.OSSClientBuilder; import com.jc.oss.service.OssService; import com.jc.oss.utils.ConstantPropertiesUtils; //import org.joda.time.DateTime; import org.springframework.stereotype.Service; import org.springframework.web.multipart.MultipartFile;   import java.io.InputStream; import java.util.UUID;   @Service public class OssServiceImpl implements OssService {       //上传头像到oss     @Override     public String uploadFileAvatar(MultipartFile file) {         // 工具类获取值         String endpoint = ConstantPropertiesUtils.END_POIND;         String accessKeyId = ConstantPropertiesUtils.ACCESS_KEY_ID;         String accessKeySecret = ConstantPropertiesUtils.ACCESS_KEY_SECRET;         String bucketName = ConstantPropertiesUtils.BUCKET_NAME;           try {             // 创建OSS实例。                        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);               //获取上传文件输入流             InputStream inputStream = file.getInputStream();             //获取文件名称             String fileName = file.getOriginalFilename();               //1 在文件名称里面添加随机唯一的值             String uuid = UUID.randomUUID().toString().replaceAll("-","");             // yuy76t5rew01.jpg             fileName = uuid+fileName;               //2 把文件按照日期进行分类             //获取当前日期             //   2019/11/12 //            String datePath = new DateTime().toString("yyyy/MM/dd"); //            //拼接 //            //  2019/11/12/ewtqr313401.jpg //            fileName = datePath+"/"+fileName;               //调用oss方法实现上传             //第一个参数  Bucket名称             //第二个参数  上传到oss文件路径和文件名称   aa/bb/1.jpg             //第三个参数  上传文件输入流             ossClient.putObject(bucketName,fileName , inputStream);               // 关闭OSSClient。             ossClient.shutdown();               //把上传之后文件路径返回             //需要把上传到阿里云oss路径手动拼接出来             //  https://edu-guli-1010.oss-cn-beijing.aliyuncs.com/01.jpg             String url = "https://"+bucketName+"."+endpoint+"/"+fileName;             return url;         }catch(Exception e) {             e.printStackTrace();             return null;         }     } }

5编写controller

上传文件 返回文件连接

package com.jc.oss.controller;

//import com.atguigu.commonutils.R;
import com.jc.commonutils.R;
import com.jc.oss.service.OssService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

@RestController
@RequestMapping("/eduoss/fileoss")
@CrossOrigin
public class OssController {

    @Autowired
    private OssService ossService;

    //上传头像的方法
    @PostMapping
    public R uploadOssFile(MultipartFile file) {
        //获取上传文件  MultipartFile
        //返回上传到oss的路径
        String url = ossService.uploadFileAvatar(file);
        return R.ok().data("url",url);
    }
}