如何上传base64编码图片到七牛云

POST /putb64/<Fsize>/key/<EncodedKey>/mimeType/<EncodedMimeType>/crc32/<Crc32>/x:user-var/<EncodedUserVarVal>
Host: upload.qiniup.com
Authorization: UpToken <UpToken>
Content-Type: application/octet-stream

<Base64EncodedFileContent>

200 OK {
  hash: <ETag>
}

function putb64(){
  var pic = "填写你的base64后的字符串";
  var url = "http://upload.qiniup.com/putb64/20264"; //非华东空间需要根据注意事项 1 修改上传域名
  var xhr = new XMLHttpRequest();
  xhr.onreadystatechange=function(){
    if (xhr.readyState==4){
      document.getElementById("myDiv").innerHTML=xhr.responseText;
    }
  }
  xhr.open("POST", url, true);
  xhr.setRequestHeader("Content-Type", "application/octet-stream");
  xhr.setRequestHeader("Authorization", "UpToken 填写你从服务端获取的上传token");
  xhr.send(pic);
}

import java.io.File;
import java.io.FileInputStream;
import com.qiniu.util.*;
import okhttp3.*;
public class put64 {
    String ak = "";
    String sk = "";    // 密钥配置
    Auth auth = Auth.create(ak, sk);    // TODO Auto-generated constructor stub 
    String bucketname = "";    //空间名
    String key = "";    //上传的图片名

    public String getUpToken() {        
        return auth.uploadToken(bucketname, null, 3600, new StringMap().put("insertOnly", 1));
    }    
    public void put64image() throws Exception {
        String file = "D:\\Documents\\Pictures\\1.png";//图片路径
        FileInputStream fis = null;        
        int l = (int) (new File(file).length());        
        byte[] src = new byte[l];
        fis = new FileInputStream(new File(file));
        fis.read(src);
        String file64 = Base64.encodeToString(src, 0);
        String url = "http://upload.qiniup.com/putb64/" + l+"/key/"+ UrlSafeBase64.encodeToString(key);      
   //非华东空间需要根据注意事项 1 修改上传域名
        RequestBody rb = RequestBody.create(null, file64);
        Request request = new Request.Builder().
                url(url).
                addHeader("Content-Type", "application/octet-stream")
                .addHeader("Authorization", "UpToken " + getUpToken())
                .post(rb).build();
        System.out.println(request.headers());

        OkHttpClient client = new OkHttpClient();
        okhttp3.Response response = client.newCall(request).execute();
        System.out.println(response);
    }   
     public static void main(String[] args) throws Exception {   
          new put64().put64image();
    }
}