java 发送http请求

在这里介绍一个关于发送和接受http的示例，关于URL和HttpURLConnection类请参考jdk.

 

 

String method = "POST";
String content = "<name>dd</name>";
URL url = new URL(http://192.168.100.77/test.jsp);

HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();

urlConnection.setRequestMethod(method);
urlConnection.setDoOutput(true);//URL 连接可用于输入和/或输出
urlConnection.setDoInput(true);//URL 连接可用于输入和/或输出
urlConnection.setUseCaches(false);

//设置http头
urlConnection.addRequestProperty("POST","/  HTTP/1.1");
urlConnection.addRequestProperty("Content-Typeapplication/client");
urlConnection.addRequestProperty("Content-Lengt","1000");

//设置包体
urlConnection.getOutputStream().write(content.toString().getBytes());
urlConnection.getOutputStream().flush();
urlConnection.getOutputStream().close();

//取得返回包体
            InputStream in = urlConnection.getInputStream();
            BufferedReader bufferedReader = new BufferedReader(
                    new InputStreamReader(in));//取得返回内容
            httpResponser.contentCollection = new Vector<String>();
            StringBuffer temp = new StringBuffer();
            String line = bufferedReader.readLine();
       nbsp;System.out.println("lenth:"+urlConnection.getContentLength());
            while (line != null) ...{
                httpResponser.contentCollection.add(line);
                temp.append(line).append(" ");
                line = bufferedReader.readLine();
            }

//取得返回http头信息
          String content-type = urlConnection.getHeaderField("Content-Type");
          String contentLenth = urlConnection.getHeaderField("Content-Length");
          Sring code = urlConnection.getHeaderField("errorcode");

 

文章出处：飞诺网(www.firnow.com):http://dev.firnow.com/course/3_program/java/javashl/200845/108427_2.html

 

///

JarURLConnection clientConnection = ((JarURLConnection) getJarURL(
world).openConnection());
clientConnection.addRequestProperty("Protocol", "HTTP/1.1");
clientConnection.addRequestProperty("Connection", "keep-alive");
clientConnection.addRequestProperty("Keep-Alive", "200");
clientConnection.addRequestProperty("Referrer", "-");
clientConnection.addRequestProperty("User-Agent",
"Mozilla/5.0 (" + System.getProperty("os.name") + " "
+ System.getProperty("os.version") + ") Java/"
+ System.getProperty("java.version"));
classLoader = AppletClassLoader
.newInstance(new URL[] { clientConnection.getJarFileURL() });