oss文件上传demo (精简版通用)

项目代码链接 

https://gitee.com/PanGuanQing/oss-file-upload-demo.git

依赖

<!-- 阿里云oss依赖 -->
<dependency>
	<groupId>com.aliyun.oss</groupId>
	<artifactId>aliyun-sdk-oss</artifactId>
	<version>3.8.1</version>
</dependency>

UploadController

import com.example.ossuploaddemo.utils.OSSUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.SecureRandom;
import java.text.SimpleDateFormat;
import java.util.Date;

@RestController
public class UploadController {

    @Autowired
    private OSSUtil ossUtil;

    @RequestMapping("/upload")
    public String upload(MultipartFile file) throws IOException {
        String imgUrl = "";
        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
        // 最后上传生成的文件名
        String finalFileName = System.currentTimeMillis() + "" + new SecureRandom().nextInt(0x0400) + ".jpg";
        // oss中的文件夹名
        String objectName = sdf.format(new Date()) + "/" + finalFileName;
        // 上传oss
        ossUtil.uploadFile2OSS(file.getInputStream(), objectName);
        //获取文件的URl地址
        imgUrl = ossUtil.getImgUrl(objectName);
        return imgUrl;
    }
}

OSSUtil

import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.model.ObjectMetadata;
import com.aliyun.oss.model.PutObjectResult;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.Date;

@Slf4j
@Component
public class OSSUtil {

    private static final String endpoint = "oss-cn-beijing.aliyuncs.com";
    private static final String accessKeyId = "xxxxx";
    private static final String accessKeySecret = "xxxxx";
    private static final String bucketName = "pan-guan-qing";
    private static final String FOLDER = "image/";

    public static OSS getOSSClient() {
        return new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
    }


    public String getImgUrl(String fileUrl) {
        System.out.println(fileUrl);
        if (!StringUtils.isEmpty(fileUrl)) {
            return this.getUrl(this.FOLDER + fileUrl);
        }
        return "";
    }

    public String uploadFile2OSS(InputStream instream, String fileName) {

        String ret = "";
        try {
            OSS ossClient = getOSSClient();
            // 创建上传Object的Metadata
            ObjectMetadata objectMetadata = new ObjectMetadata();
            objectMetadata.setContentLength(instream.available());
            objectMetadata.setCacheControl("no-cache");
            objectMetadata.setContentType(getContentType(fileName.substring(fileName.lastIndexOf("."))));
            objectMetadata.setHeader("Pragma", "no-cache");
            System.out.println();
            // 上传文件
            PutObjectResult putResult = ossClient.putObject(bucketName, FOLDER + fileName, instream, objectMetadata);
            ret = putResult.getETag();
        } catch (IOException e) {
            log.error(e.getMessage(), e);
        } finally {
            try {
                if (instream != null) {
                    instream.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return ret;
    }

    public static final String getContentType(String filenameExtension) {

        if (filenameExtension.equalsIgnoreCase(".bmp")) {
            return "application/x-bmp";
        }
        if (filenameExtension.equalsIgnoreCase(".gif")) {
            return "image/gif";
        }
        if (filenameExtension.equalsIgnoreCase(".jpeg") ||
                filenameExtension.equalsIgnoreCase(".jpg") ||
                filenameExtension.equalsIgnoreCase(".png")) {
            return "image/jpg";
        }
        if (filenameExtension.equalsIgnoreCase(".html")) {
            return "text/html";
        }
        if (filenameExtension.equalsIgnoreCase(".txt")) {
            return "text/plain";
        }
        if (filenameExtension.equalsIgnoreCase(".vsd")) {
            return "application/vnd.visio";
        }
        if (filenameExtension.equalsIgnoreCase(".pptx") ||
                filenameExtension.equalsIgnoreCase(".ppt")) {
            return "application/vnd.ms-powerpoint";
        }
        if (filenameExtension.equalsIgnoreCase(".docx") ||
                filenameExtension.equalsIgnoreCase(".doc")) {
            return "application/msword";
        }
        if (filenameExtension.equalsIgnoreCase(".xla") ||
                filenameExtension.equalsIgnoreCase(".xlc") ||
                filenameExtension.equalsIgnoreCase(".xlm") ||
                filenameExtension.equalsIgnoreCase(".xls") ||
                filenameExtension.equalsIgnoreCase(".xlt") ||
                filenameExtension.equalsIgnoreCase(".xlw")) {
            return "application/vnd.ms-excel";
        }
        if (filenameExtension.equalsIgnoreCase(".xlsx")) {
            return "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
        }
        if (filenameExtension.equalsIgnoreCase(".xml")) {
            return "text/xml";
        }
        if (filenameExtension.equalsIgnoreCase(".pdf")) {
            return "application/pdf";
        }
        if (filenameExtension.equalsIgnoreCase(".zip")) {
            return "application/zip";
        }
        if (filenameExtension.equalsIgnoreCase(".tar")) {
            return "application/x-tar";
        }
        if (filenameExtension.equalsIgnoreCase(".avi")) {
            return "video/avi";
        }
        if (filenameExtension.equalsIgnoreCase(".mp4")) {
            return "video/mpeg4";
        }
        if (filenameExtension.equalsIgnoreCase(".mp3")) {
            return "audio/mp3";
        }
        if (filenameExtension.equalsIgnoreCase(".mp2")) {
            return "audio/mp2";
        }
        // 默认下载
//        return "application/octet-stream";
        return "image/jpg";
    }


    public String getUrl(String key) {
        OSS ossClient = getOSSClient();
        Date expiration = new Date(System.currentTimeMillis() + 3600L * 1000 * 24 * 30);
        // 生成URL
        URL url = ossClient.generatePresignedUrl(bucketName, key, expiration);
        System.out.println("url: "+url);
        if (url != null) {
            String host = "https://" + url.getHost() + url.getPath();
            //System.out.println("host: "+host);
            return url.toString();
        }
        return "";
    }
}

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