java获取网络图片上传到OSS的方法

三叶草

这篇文章主要为大家详细介绍了java获取网络图片上传到OSS，具有一定的参考价值，感兴趣的小伙伴们可以参考一下
oss不支持通过一个网络地址来上传图片，所以若想将网络上的图片上传到oss上需要走点弯路。
1、通过链接将图片下载到本地的一个文件夹下面
2、用oss上传该文件夹下的文件
3、上传完成后删除本地的文件
具体代码如下：

//获取当前项目的绝对路径 
public static string gettomcatpath(){ 
 string nowpath;   
 string tempdir; 
 nowpath=system.getproperty("user.dir"); 
 tempdir=nowpath.replace("bin", ""); //把bin 文件夹变到 webapps文件里面 
 return tempdir; 
} 
/**
* 将图片下载下来后，上传到oss
* @param imglink
* @param downloadpath
* @return
* @throws exception
*/
private string downloadimaganduploadtooss(string imglink,string downloadpath) throws exception{
 list<string> urllist=new arraylist<string>();
 urllist.add(imglink);
 string imgname=dateutil.formatdate(new date(), "yyyymmddhhmmss")+uuidutil.createuuid()+".jpg";
 downloadpicture(urllist,downloadpath,imgname);
string key="caralbum/"+imgname;
string imgurl=ossobjectapi.genosspicurl(ossobjectapi.xi_an_bucket_name,ossobjectapi.xian_access_id,ossobjectapi.xian_access_key,
 "http://oss-cn-zhangjiakou.aliyuncs.com/",downloadpath+imgname,key);
fileutil.delete(downloadpath+imgname);
return imgurl;
} 
/** 
 * 传入要下载的图片的url列表，将url所对应的图片下载到本地 
 * @param urllist 
 * @throws exception 
 */
private void downloadpicture(list<string> urllist,string path,string imgname) throws exception { 
 if(urllist==null||urllist.size()==0){
  return;
 }
 url url = null; 
 fileoutputstream fileoutputstream =null;
 inputstream inputstream =null;
 for (string urlstring : urllist) { 
  try { 
  url = new url(urlstring);
  httpurlconnection connection = (httpurlconnection) url.openconnection();
  connection.addrequestproperty("user-agent","mozilla/5.0 (windows nt 6.1; wow64; rv:55.0) gecko/20100101 firefox/55.0");
  connection.setconnecttimeout(10 * 1000);
  connection.setreadtimeout(15 * 1000);
  inputstream = connection.getinputstream();
  byte[] buffer = new byte[1024];
  int length;
  fileoutputstream= new fileoutputstream(path+ file.separator+ imgname);
  while ((length = inputstream.read(buffer)) != -1) {
   fileoutputstream.write(buffer, 0, length);
  }
  } catch (exception e) { 
   e.printstacktrace(); 
  } finally{
   inputstream.close();
   fileoutputstream.flush();
   fileoutputstream.close(); 
  }
 } 
 
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持CodeAE代码之家。
原文链接：https://blog.csdn.net/qq_33556185/article/details/79152679