深入Android通过Apache HTTP访问HTTP资源示例代码

package com.jiahui.net; import java.io.InputStream; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.StatusLine; import org.apache.http.client.HttpClient; 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.util.EntityUtils; import android.app.Activity; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; import android.widget.ImageButton; import android.widget.ImageView; import android.widget.TextView; import android.widget.Toast; public class HTTPDemoActivity extends Activity { private Button getBtn, postBtn, imageBtn; private EditText urlText, imageUrlText; private TextView resutlView; private ImageView imageView; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); urlText = (EditText) findViewById(R.id.urlText); imageUrlText = (EditText) findViewById(R.id.imageurlText); resutlView = (TextView) findViewById(R.id.resultView); getBtn = (Button) findViewById(R.id.getBtn); postBtn = (Button) findViewById(R.id.postBtn); imageBtn = (Button) findViewById(R.id.imgBtn); imageView = (ImageView) findViewById(R.id.imgeView01); getBtn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { System.out.println(urlText.getText().toString()); resutlView .setText(request("GET", urlText.getText().toString())); } }); postBtn.setOnClickListener(new OnClickListener() { public void onClick(View v) { System.out.println(urlText.getText().toString()); resutlView .setText(request("POST", urlText.getText().toString())); } }); imageBtn.setOnClickListener(new OnClickListener() { public void onClick(View v) { getImage(imageUrlText.getText().toString()); } }); } private String request(String method, String url) { HttpResponse httpResponse = null; StringBuffer result = new StringBuffer(); try { if (method.equals("GET")) { // 1.通过url创建HttpGet对象 HttpGet httpGet = new HttpGet(url); // 2.通过DefaultClient的excute方法执行返回一个HttpResponse对象 HttpClient httpClient = new DefaultHttpClient(); httpResponse = httpClient.execute(httpGet); // 3.取得相关信息 // 取得HttpEntiy HttpEntity httpEntity = httpResponse.getEntity(); // 得到一些数据 // 通过EntityUtils并指定编码方式取到返回的数据 result.append(EntityUtils.toString(httpEntity, "utf-8")); //得到StatusLine接口对象 StatusLine statusLine = httpResponse.getStatusLine(); //得到协议 ; result.append("协议:" + statusLine.getProtocolVersion() + "\r\n"); int statusCode = statusLine.getStatusCode(); result.append("状态码:" + statusCode + "\r\n"); } else if (method.equals("POST")) { // 1.通过url创建HttpGet对象 HttpPost httpPost = new HttpPost(url); // 2.通过DefaultClient的excute方法执行返回一个HttpResponse对象 HttpClient httpClient = new DefaultHttpClient(); httpResponse = httpClient.execute(httpPost); // 3.取得相关信息 // 取得HttpEntiy HttpEntity httpEntity = httpResponse.getEntity(); // 得到一些数据 // 通过EntityUtils并指定编码方式取到返回的数据 result.append(EntityUtils.toString(httpEntity, "utf-8")); StatusLine statusLine = httpResponse.getStatusLine(); statusLine.getProtocolVersion(); int statusCode = statusLine.getStatusCode(); result.append("状态码:" + statusCode + "\r\n"); } } catch (Exception e) { Toast.makeText(HTTPDemoActivity.this, "网络连接异常", Toast.LENGTH_LONG) .show(); } return result.toString(); } public void getImage(String url) { try { // 1.通过url创建HttpGet对象 HttpGet httpGet = new HttpGet(url); // 2.通过DefaultClient的excute方法执行返回一个HttpResponse对象 HttpClient httpClient = new DefaultHttpClient(); HttpResponse httpResponse = httpClient.execute(httpGet); // 3.取得相关信息 // 取得HttpEntiy HttpEntity httpEntity = httpResponse.getEntity(); // 4.通过HttpEntiy.getContent得到一个输入流 InputStream inputStream = httpEntity.getContent(); System.out.println(inputStream.available()); //通过传入的流再通过Bitmap工厂创建一个Bitmap Bitmap bitmap = BitmapFactory.decodeStream(inputStream); //设置imageView imageView.setImageBitmap(bitmap); } catch (Exception e) { Toast.makeText(HTTPDemoActivity.this, "网络连接异常", Toast.LENGTH_LONG) .show(); } } }