Android-HTTP.rar_android

package com.httpDemo01; import java.io.BufferedReader; import java.io.DataOutputStream; import java.io.IOException; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL; import java.net.URLEncoder; import android.app.Activity; import android.os.Bundle; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.TextView; public class Activity2 extends Activity { private final String DEBUG_TAG = "System.out"; private TextView mTextView; private Button mButton; protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mTextView = (TextView) findViewById(R.id.TextView01); mButton = (Button) findViewById(R.id.Button01); mButton.setOnClickListener(new httpListener()); } // 设置按钮监听器 class httpListener implements OnClickListener { public void onClick(View v) { refresh(); } } private void refresh() { String httpUrl = "http://192.168.0.101:8080/Test/test.jsp"; String resultData = ""; URL url = null; try { // 创建一个URL对象 url = new URL(httpUrl); } catch (MalformedURLException e) { Log.d(DEBUG_TAG, "create URL Exception"); } // 声明HttpURLConnection对象 HttpURLConnection urlConn = null; // 声明InputStreamReader对象 InputStreamReader in = null; // 声明BufferedReader对象 BufferedReader buffer = null; String inputLine = null; // 声明DataOutputStream流 DataOutputStream out = null; if (url != null) { try { // 使用HttpURLConnection打开连接 urlConn = (HttpURLConnection) url.openConnection(); // 因为这个是POST请求所以要设置为true urlConn.setDoInput(true); urlConn.setDoOutput(true); // 设置POST方式 urlConn.setRequestMethod("POST"); // POST请求不能设置缓存 urlConn.setUseCaches(false); urlConn.setInstanceFollowRedirects(false); // 配置本次连接的Content-type，配置为application/x-www-form-urlencoded的 urlConn.setRequestProperty("Content-Type","application/x-www-form-urlencoded"); // 连接，从postUrl.openConnection()至此的配置必须要在connect之前完成 // 要注意的是connectio.getOutputStream会隐含的进行connect urlConn.connect(); // DataOutputStream流 out = new DataOutputStream(urlConn.getOutputStream()); String content = "par=" + URLEncoder.encode("abcdefg", "gb2312"); // 将要上传的内容写入流中 out.writeBytes(content); // 得到读取的内容(流) in = new InputStreamReader(urlConn.getInputStream()); // 创建BufferReader对象，输出时候用到 buffer = new BufferedReader(in); // 使用循环来读取数据 while ((inputLine = buffer.readLine()) != null) { // 在每一行后面加上换行 resultData += inputLine + "\n"; } // 设置显示取的的内容 if (resultData != null && !resultData.equals("")) { mTextView.setText(resultData); } else { mTextView.setText("读取的内容为空"); } } catch (IOException e) { e.printStackTrace(); } finally { try { // 刷新DataOutputStream流 out.flush(); // 关闭DataOutputStream流 out.close(); // 关闭InputStreamReader in.close(); // 关闭URL连接 urlConn.disconnect(); } catch (IOException e) { e.printStackTrace(); } } } else { Log.d(DEBUG_TAG, "URL is NULL"); } } }