httpUrl请求-优快云博客

本文详细介绍了如何使用Java进行网络请求，包括创建URL对象、设置访问地址、获取HttpURLConnection对象及设置连接超时等步骤，并展示了如何读取响应数据。

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/**
* 联网请求数据
*/
private void getData() {
try {

//得到URL对象,并设置访问地址
URL url=new URL("http://www.baidu.com/");
//得到HttpURLConnection对象
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
//设置连接超时
httpURLConnection.setConnectTimeout(5000);
//设置请求方式 get/post
httpURLConnection.setRequestMethod("POST");
//读取超时
httpURLConnection.setReadTimeout(5000);

//正式联网
httpURLConnection.connect();
//获得状态码
int code =httpURLConnection.getResponseCode();

if(code==200){

System.out.println("联网请求成功");

//获取包含数据的输入流
InputStream inputStream = httpURLConnection.getInputStream();

BufferedReader bufferedReader=new BufferedReader(new InputStreamReader(inputStream, "UTF-8"));
//记录每一行读取的数据
String data;
//拼接字符串
StringBuffer stringBuffer=new StringBuffer();
while ((data=bufferedReader.readLine())!=null) {
stringBuffer.append(data);

}

/* System.out.println(stringBuffer.toString());

textView.setText(stringBuffer.toString());*/

Message msg = Message.obtain();
msg.obj=stringBuffer.toString();
handler.sendMessage(msg);

}else{

System.out.println("联网失败");

}

} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}