访问url--传值-->调用request.getInputStream()获取参数
Java访问url--传值
import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStreamWriter; import java.io.UnsupportedEncodingException; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.ProtocolException; import java.net.URL; public class Test { public static void main(String[] args) { try { URL url = new URL("http://192.168.1.99:8005/shipnav/mobilepilotop?type=3"); HttpURLConnection connection = (HttpURLConnection) url.openConnection(); /** * 然后把连接设为输出模式。URLConnection通常作为输入来使用,比如下载一个Web页。 * 通过把URLConnection设为输出,你可以把数据向你个Web页传送。下面是如何做: */ connection.setDoOutput(true); connection.setDoInput(true); connection.setRequestProperty("content-type", "text/html"); connection.setRequestMethod("POST"); connection.setConnectTimeout(50000); connection.setReadTimeout(50000); connection.connect(); /** * 最后,为了得到OutputStream,简单起见,把它约束在Writer并且放入POST信息中,例如: ... */ BufferedWriter out = new BufferedWriter(new OutputStreamWriter(connection.getOutputStream(), "UTF-8")); out.write("message=402881e3409a949201409aa8215e002c,563004840,2013-10-08 16:43:00"); //以流的形式传值 out.flush(); String sCurrentLine; String sTotalString; sCurrentLine = ""; sTotalString = ""; InputStream l_urlStream; l_urlStream = connection.getInputStream(); // 传说中的三层包装阿! BufferedReader l_reader = new BufferedReader(new InputStreamReader(l_urlStream)); while ((sCurrentLine = l_reader.readLine()) != null) { sTotalString += sCurrentLine + "/r/n"; } System.out.println(sTotalString); //获取返回的流 } catch (MalformedURLException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (ProtocolException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (UnsupportedEncodingException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }
获取请求传过来的参数(流)
ServletInputStream inStream = req.getInputStream(); ByteArrayOutputStream swapStream = new ByteArrayOutputStream(); byte[] buff = new byte[8192]; // buff用于存放循环读取的临时数据 int rc = 0; while ((rc = inStream.read(buff, 0, 1024)) > 0) { swapStream.write(buff, 0, rc); } byte[] in_b = swapStream.toByteArray(); // in_b为转换之后的结果? String msg = new String(in_b); System.out.println("----------------------------------" + msg); //msg="message=402881e3409a949201409aa8215e002c,563004840,2013-10-08 16:43:00"
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