七牛云上传下载示例代码

import com.google.gson.Gson;
import com.qiniu.common.QiniuException;
import com.qiniu.http.Response;
import com.qiniu.storage.Configuration;
import com.qiniu.storage.Region;
import com.qiniu.storage.UploadManager;
import com.qiniu.storage.model.DefaultPutRet;
import com.qiniu.storage.persistent.FileRecorder;
import com.qiniu.util.Auth;
import org.junit.Test;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.nio.file.Paths;

public class QiniuTest {
    //构造一个带指定 Region 对象的配置类
    Configuration cfg = new Configuration(Region.region0());
//...其他参数参考类注释

    UploadManager uploadManager = new UploadManager(cfg);
    //...生成上传凭证，然后准备上传
    String accessKey = "tCyNn3CG3Gv863E8o-xmWi";
    String secretKey = "i2tFgVi0rFBflwpzaB";
    String bucket = "xiaojf-image";

    @Test
    public void uploadLocalFile() {
//如果是Windows情况下，格式是 D:\\qiniu\\test.png
        String localFilePath = "/Users/xiaojf/Downloads/LOGO.jpg";
//默认不指定key的情况下，以文件内容的hash值作为文件名
        String key = null;

        Auth auth = Auth.create(accessKey, secretKey);
        String upToken = auth.uploadToken(bucket);

        try {
            Response response = uploadManager.put(localFilePath, key, upToken);
            //解析上传成功的结果
            DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);
            System.out.println(putRet.key);
            System.out.println(putRet.hash);
        } catch (QiniuException ex) {
            Response r = ex.response;
            System.err.println(r.toString());
            try {
                System.err.println(r.bodyString());
            } catch (QiniuException ex2) {
                //ignore
            }
        }

    }

    @Test
    public void uploadStream() {
//默认不指定key的情况下，以文件内容的hash值作为文件名
        String key = null;
        try {
            byte[] uploadBytes = "hello qiniu cloud".getBytes("utf-8");
            ByteArrayInputStream byteInputStream = new ByteArrayInputStream(uploadBytes);
            Auth auth = Auth.create(accessKey, secretKey);
            String upToken = auth.uploadToken(bucket);
            try {
                Response response = uploadManager.put(byteInputStream, key, upToken, null, null);
                //解析上传成功的结果
                DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);
                System.out.println(putRet.key);
                System.out.println(putRet.hash);
            } catch (QiniuException ex) {
                Response r = ex.response;
                System.err.println(r.toString());
                try {
                    System.err.println(r.bodyString());
                } catch (QiniuException ex2) {
                    //ignore
                }
            }
        } catch (UnsupportedEncodingException ex) {
            //ignore
        }
    }

    @Test
    public void uploadByte() {
        bucket = "xiaojf-public";
//默认不指定key的情况下，以文件内容的hash值作为文件名
        String key = null;
        try {
            byte[] uploadBytes = "hello qiniu cloud".getBytes("utf-8");
            Auth auth = Auth.create(accessKey, secretKey);
            String upToken = auth.uploadToken(bucket);
            try {
                Response response = uploadManager.put(uploadBytes, key, upToken);
                //解析上传成功的结果
                DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);
                System.out.println(putRet.key);
                System.out.println(putRet.hash);
            } catch (QiniuException ex) {
                Response r = ex.response;
                System.err.println(r.toString());
                try {
                    System.err.println(r.bodyString());
                } catch (QiniuException ex2) {
                    //ignore
                }
            }
        } catch (UnsupportedEncodingException ex) {
            //ignore
        }
    }

    @Test
    public void uploadBreak() {
//默认不指定key的情况下，以文件内容的hash值作为文件名
        String key = null;

        Auth auth = Auth.create(accessKey, secretKey);
        String upToken = auth.uploadToken(bucket);

        String localTempDir = Paths.get(System.getenv("java.io.tmpdir"), bucket).toString();
        try {
            //设置断点续传文件进度保存目录
            FileRecorder fileRecorder = new FileRecorder(localTempDir);
            UploadManager uploadManager = new UploadManager(cfg, fileRecorder);
            try {
                Response response = uploadManager.put("/Users/xiaojf/Downloads/LOGO.jpg", key, upToken);
                //解析上传成功的结果
                DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);
                System.out.println(putRet.key);
                System.out.println(putRet.hash);
            } catch (QiniuException ex) {
                Response r = ex.response;
                System.err.println(r.toString());
                try {
                    System.err.println(r.bodyString());
                } catch (QiniuException ex2) {
                    //ignore
                }
            }
        } catch (IOException ex) {
            ex.printStackTrace();
        }

    }


    @Test
    public void downloadPublic() {
        String fileName = "Fu3P9AgpOo_0q_4KnJdn9ZXVimfD";
        String domainOfBucket = "http://q9i7ishgo.bkt.clouddn.com";
        String finalUrl = String.format("%s/%s", domainOfBucket, fileName);
        System.out.println(finalUrl);
    }

    @Test
    public void downloadPrivate() throws UnsupportedEncodingException {
        String fileName = "FuVtJHPZ0p_bLFHzgEM3E8j1WobH";
        String domainOfBucket = "http://q9i6wr15u.bkt.clouddn.com";
        String encodedFileName = URLEncoder.encode(fileName, "utf-8").replace("+", "%20");
        String publicUrl = String.format("%s/%s", domainOfBucket, encodedFileName);
        Auth auth = Auth.create(accessKey, secretKey);
        long expireInSeconds = 3600;//1小时，可以自定义链接过期时间
        String finalUrl = auth.privateDownloadUrl(publicUrl, expireInSeconds);
        System.out.println(finalUrl);
    }
}

 maven 地址

<properties>
        <azure.storage.blob.version>11.0.0</azure.storage.blob.version>
        <qiniu.version>[7.2.0, 7.2.99]</qiniu.version>
    </properties>

<dependency>
            <groupId>com.qiniu</groupId>
            <artifactId>qiniu-java-sdk</artifactId>
            <version>${qiniu.version}</version>
        </dependency>