Java: HttpURLConnection 上传文件_20160912_七侠镇莫尛貝

参考资料：

http://lapulande.iteye.com/blog/719581

http://my.oschina.net/gavinjin/blog/48897?p=1

publicstatic String PostFile(String url_post, String filename, String RA_O,String RA_OU,String charset, boolean b_flag, String cookies) throws IOException {    String BOUNDARY = "---------------------------27104325129557"; // 定义数据分隔线    String fname = filename    URL postUrl = new URL(url_post);    HttpURLConnection connection = (HttpURLConnection) postUrl.openConnection();    if ("" != cookies) {        connection.setRequestProperty("Cookie", cookies);        println("set cookies = [" + cookies + "]")    }    connection.setDoOutput(true);    connection.setDoInput(true);    connection.setUseCaches(false);    connection.setRequestMethod("POST");    connection.setRequestProperty("connection", "Keep-Alive");    connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)");    connection.setRequestProperty("Charsert", "UTF-8");    connection.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);    connection.connect();    DataOutputStream out = new DataOutputStream(connection.getOutputStream());    byte[] end_data = ("\r\n--" + BOUNDARY + "--\r\n").getBytes();// 定义最后数据分隔线    // <input type="hidden" name="O" id="O" value="TopCA"/>    // <input type="hidden" name="OU" id="OU" value="RA_2k2_0_"/>    // <input type="hidden" value="findCert" name="actionType"/>    File file = new File(fname);    StringBuilder sb = new StringBuilder();    sb.append("--" + BOUNDARY + "\r\n");    sb.append("Content-Disposition: form-data;name=\"certType"  + "\"\r\n\r\n");    sb.append("load\r\n");    sb.append("--" + BOUNDARY + "\r\n");    sb.append("Content-Disposition: form-data;name=\"O"  + "\"\r\n\r\n");    sb.append(RA_O +"\r\n");    sb.append("--" + BOUNDARY + "\r\n");    sb.append("Content-Disposition: form-data;name=\"OU"  + "\"\r\n\r\n");    sb.append(RA_OU+"\r\n");    if(true){        sb.append("--" + BOUNDARY + "\r\n");        sb.append("Content-Disposition: form-data;name=\"file1" + "\";filename=\"\"\r\n");        sb.append("Content-Type:application/octet-stream\r\n\r\n\r\n");        sb.append("--" + BOUNDARY + "\r\n");        sb.append("Content-Disposition: form-data;name=\"file2" + "\";filename=\"\"\r\n");        sb.append("Content-Type:application/octet-stream\r\n\r\n\r\n");        sb.append("--" + BOUNDARY + "\r\n");        sb.append("Content-Disposition: form-data;name=\"file3" + "\";filename=\"\"\r\n");        sb.append("Content-Type:application/octet-stream\r\n\r\n\r\n");        sb.append("--" + BOUNDARY + "\r\n");        sb.append("Content-Disposition: form-data;name=\"file4" + "\";filename=\"\"\r\n");        sb.append("Content-Type:application/octet-stream\r\n\r\n\r\n");    }    sb.append("--" + BOUNDARY + "\r\n");    sb.append("Content-Disposition: form-data;name=\"file5" + "\";filename=\"" + file.getName() + "\"\r\n");    sb.append("Content-Type:application/octet-stream\r\n\r\n");    byte[] data = sb.toString().getBytes();    out.write(data);//    println("sb = [" + new String(sb) + "]" )    DataInputStream filein = new DataInputStream(new FileInputStream(file));    int bytes = 0;    byte[] bufferOut = new byte[1024];    while ((bytes = filein.read(bufferOut)) != -1) {        out.write(bufferOut, 0, bytes);    }//    out.write("\r\n".getBytes()); //多个文件时，二个文件之间加入这个    filein.close();        // DataOutputStream.writeBytes将字符串中的16位的unicode字符以8位的字符形式写道流里面    String body=new String(end_data)//    println("body = [" +  body + "]")    out.writeBytes(body);    out.flush();    out.close(); // flush and close    BufferedReader reader = new BufferedReader(new InputStreamReader(  connection.getInputStream(), charset));    if(false){        String line;        System.out.println("Contents of post request:");        while ((line = reader.readLine()) != null)  {            System.out.println(line);        }        println(" ")    }    reader.close();    connection.disconnect();    return cookieVal}

使用方法：

String cookie_login = MyHttpUrlConn.Post(URL_LOGIN,"userName=admin&password=12345678","utf-8",false,"");

MyHttpUrlConn.PostFile(Post_upload,USER_FILE_PATH,"mxb","6","utf-8",false,cookie_login);