Android网络操作（上传下载等）(3)

    private static String retrieveHttpEntity(HttpEntity httpEntity) throws UnsupportedEncodingException, IllegalStateException, 
            IOException { 
        StringBuffer stringBuffer = new StringBuffer(); 
        InputStreamReader is = new InputStreamReader(httpEntity.getContent(), HTTP.UTF_8); 
        BufferedReader bufferedReader = new BufferedReader(is); 
        String line; 
        while ((line = bufferedReader.readLine()) != null) { 
            stringBuffer.append(line); 
        } 
        return stringBuffer.toString(); 
    } 
 
    public static String uploadFile(String actionUrl, String newName, InputStream fStream) { 
        String end = "\r\n"; 
        String twoHyphens = "--"; 
        String boundary = java.util.UUID.randomUUID().toString(); 
        DataOutputStream ds = null; 
        try { 
            URL url = new URL(actionUrl); 
            HttpURLConnection con = (HttpURLConnection) url.openConnection(); 
            /* 允许Input、Output，不使用Cache */ 
            con.setDoInput(true); 
            con.setDoOutput(true); 
            con.setUseCaches(false); 
            /* 设定传送的method=POST */ 
            con.setRequestMethod("POST"); 
            /* setRequestProperty */ 
            con.setRequestProperty("Connection", "Keep-Alive"); 
            con.setRequestProperty("Charset", "UTF-8"); 
            con.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);