Android实现网络访问

package com.tju.slide.eight3; import java.io.IOException; import java.util.ArrayList; import java.util.List; import org.apache.http.HttpResponse; import org.apache.http.NameValuePair; import org.apache.http.client.HttpClient; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.HttpGet; import org.apache.http.client.methods.HttpPost; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.message.BasicNameValuePair; import org.apache.http.util.EntityUtils; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; public class slide8_3 extends Activity { public String myhttpget(String url) throws Exception { String out = null; try { HttpClient client = new DefaultHttpClient(); HttpGet request = new HttpGet(url); HttpResponse response = client.execute(request); out = EntityUtils.toString(response.getEntity()); } catch (IOException e) { e.printStackTrace(); } return out; } public String myhttppost(String url, String name, String value) throws Exception { String out = null; try { HttpClient client = new DefaultHttpClient(); HttpPost request = new HttpPost(url); List<NameValuePair> postParameters = new ArrayList<NameValuePair>(); postParameters.add(new BasicNameValuePair(name, value)); UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity( postParameters); request.setEntity(formEntity); HttpResponse response = client.execute(request); out = EntityUtils.toString(response.getEntity()); } catch (IOException e) { e.printStackTrace(); } return out; } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); final TextView textView = (TextView) findViewById(R.id.TextView01); final EditText editText = (EditText) findViewById(R.id.editText1); final EditText name = (EditText) findViewById(R.id.editText2); final EditText value = (EditText) findViewById(R.id.editText3); Button btn = (Button) this.findViewById(R.id.Button1); btn.setOnClickListener(new Button.OnClickListener() { public void onClick(View v) { try { textView.setText(myhttpget(editText.getText().toString() + "?" + name.getText().toString() + "=" + value.getText().toString())); } catch (Exception e) { e.printStackTrace(); } } }); Button btn2 = (Button) this.findViewById(R.id.Button2); btn2.setOnClickListener(new Button.OnClickListener() { public void onClick(View v) { try { textView.setText(myhttppost(editText.getText().toString(), name.getText().toString(), value.getText() .toString())); } catch (Exception e) { e.printStackTrace(); } } }); } }