// 代码网上抄的 忘记链接了 抱歉哈

packageupload;importjava.io.BufferedReader;importjava.io.DataOutputStream;importjava.io.FileInputStream;importjava.io.IOException;importjava.io.InputStream;importjava.io.InputStreamReader;importjava.net.HttpURLConnection;importjava.net.URL;public classuploadtest {publicuploadtest() {//TODO Auto-generated constructor stub

}public static voidmain(String[] args)

{try{

upLoadByCommonPost("http://127.0.0.1/upload_file.php");

}catch(IOException e) {//TODO Auto-generated catch block

e.printStackTrace();

}

}private static void upLoadByCommonPost(String uploadUrl) throwsIOException {

String end= "\r\n";

String twoHyphens= "--";

String boundary= "******";

URL url= newURL(uploadUrl);

HttpURLConnection httpURLConnection=(HttpURLConnection) url

.openConnection();

httpURLConnection.setChunkedStreamingMode(128 * 1024);//128K 应该按照文件大小来定义//允许输入输出流

httpURLConnection.setDoInput(true);

httpURLConnection.setDoOutput(true);

httpURLConnection.setUseCaches(false);//使用POST方法

httpURLConnection.setRequestMethod("POST");

httpURLConnection.setRequestProperty("Connection", "Keep-Alive");

httpURLConnection.setRequestProperty("Charset", "UTF-8");

httpURLConnection.setRequestProperty("Content-Type","multipart/form-data;boundary=" +boundary);

DataOutputStream dos= newDataOutputStream(

httpURLConnection.getOutputStream());

dos.writeBytes(twoHyphens+ boundary +end);

dos.writeBytes("Content-Disposition: form-data; name=\"uploadfile\"; filename=\"1.jpg\";" +end);

dos.writeBytes("Content-Type: image/jpeg" +end);

dos.writeBytes(end);

FileInputStream fis= new FileInputStream("d:\\1.jpg");byte[] buffer = new byte[1024*100]; //100k

int count = 0;//读取文件

while ((count = fis.read(buffer)) != -1) {

dos.write(buffer,0, count);

}

fis.close();

dos.writeBytes(end);

dos.writeBytes(twoHyphens+ boundary + twoHyphens +end);

dos.flush();

InputStream is=httpURLConnection.getInputStream();

InputStreamReader isr= new InputStreamReader(is, "utf-8");

BufferedReader br= newBufferedReader(isr);

String result;while ((result=br.readLine()) != null){

System.out.println(result);

}

dos.close();

is.close();

}

}