访问url--传值-->调用request.getInputStream()获取参数

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"