java接入阿里云oss对象存储

java接入阿里云oss对象存储

导入阿里云的maven环境

        <!-- 阿里云SDK-OSS对象存储 -->
        <dependency>
            <groupId>com.aliyun.oss</groupId>
            <artifactId>aliyun-sdk-oss</artifactId>
            <version>3.10.2</version>
        </dependency>

编写controller层

package com.fwh.demo.controller.common;

import com.fwh.demo.service.FileService;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
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;

import java.io.IOException;

@RestController(value = "FileController")
@RequestMapping("/api/file")
public class FileController {

    @Autowired
    private FileService fileService;

    @PostMapping("/upload")
    @ApiOperation(value = "图片上传")
    public String upload(MultipartFile file) throws IOException {
        return fileService.uploadALiYun(file);
    }
}

编写接口

package com.fwh.demo.service;

import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;

public interface FileService {

    /**
     * 文件上传到阿里云
     *
     * @param multipartFile 上传文件
     * @return 访问URL
     */
    String uploadALiYun(MultipartFile multipartFile) throws IOException;
}

编写实现类

package com.fwh.demo.service;

import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.io.InputStream;
import java.util.UUID;

@Slf4j
@Service
public class FileServiceImpl implements FileService {

    /**
     * 文件上传到阿里云
     *
     * @param multipartFile 上传文件
     * @return 访问URL
     */
    @Override
    public String uploadALiYun(MultipartFile multipartFile) throws IOException {

        String endpoint = "";
        String accessKey = "";
        String secretKey = "";
        String bucket = "";
        String domain = "";
        String dir = "";

        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKey, secretKey);

        // 上传文件流
        InputStream inputStream = multipartFile.getInputStream();

        //为了使得文件可以重复上传，每次上传的时候需要将文件名进行修改
        String fileName = multipartFile.getOriginalFilename();
        log.info("图片上传的名字为：{}", fileName);
        String uuid = UUID.randomUUID().toString().replaceAll("-", "");
        String newFileName = uuid + fileName;

        try {
            //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
            ossClient.putObject(bucket, dir + newFileName, inputStream);
        } catch (Exception e) {
            log.info(e.getMessage());
        } finally {
            // 关闭OSSClient。
            ossClient.shutdown();
        }

        return domain + newFileName;
    }
}

到此，已经完成