java上传文件到阿里云

最新推荐文章于 2024-12-06 15:21:31 发布

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#上传图片 #上传到阿里云

本文介绍了如何使用Java编程语言将文件上传至阿里云。首先，需要在项目中添加相应的依赖，然后通过阿里云提供的SDK进行文件上传操作。

1.添加依赖

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-mock</artifactId>
    <version>2.0.8</version>
</dependency>

---------------------------------------------------------------------------------------------------------


import com.aliyun.oss.OSSClient;
import com.aliyun.oss.model.ObjectMetadata;
import com.aliyun.oss.model.PutObjectResult;
import org.springframework.mock.web.MockMultipartFile;
import org.springframework.web.multipart.MultipartFile;

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

public class UploadImg {

    //阿里云API的内或外网域名
    private static String ENDPOINT;
    //阿里云API的密钥Access Key ID
    private static String ACCESS_KEY_ID ;
    //阿里云API的密钥Access Key Secret
    private static String ACCESS_KEY_SECRET ;
    //阿里云API的bucket名称
    private static String BACKET_NAME;


    static{
        ENDPOINT  = "oss-cn-shenzhen.aliyuncs.com";
        ACCESS_KEY_ID = "********************";  //自己的密钥
        ACCESS_KEY_SECRET = "******************";
        BACKET_NAME ="**********";

    }

    //上传图片文件，返回地址
    public  String uploadFile(byte[] content,String filename) throws IOException {
        OSSClient client= new OSSClient(ENDPOINT,ACCESS_KEY_ID, ACCESS_KEY_SECRET);
        MultipartFile file = new MockMultipartFile(filename,content);
        String imgUrl;

        //创建上传object的metadata
        ObjectMetadata metadata=new ObjectMetadata();
        metadata.setContentLength(file.getInputStream().available());

        metadata.setContentEncoding("utf-8");
        metadata.setContentType(file.getContentType());
        metadata.setContentDisposition("inline");
        //设置上传文件的类型
        metadata.setContentType("image/jpeg");

        //上传文件

        PutObjectResult putresult=client.putObject(BACKET_NAME,filename, file.getInputStream(),metadata);

        Date expiration = new Date(new Date().getTime() + 3600 * 1000);

        URL url=client.generatePresignedUrl(BACKET_NAME, filename, expiration);

        imgUrl = url.toString();

        client.shutdown();

        return imgUrl;
    }
}