Android应用源码之31.模拟Http请求(.zip项目安卓应用源码下载

package com.szy.http; import java.io.ByteArrayOutputStream; import java.io.DataOutputStream; import java.io.IOException; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.URL; /** *@author coolszy *@date 2011-6-16 *@blog http://blog.csdn.net/coolszy */ public class BasicHttpClient { private static final int TIME_OUT = 1000 * 6; // 超时 private static final String METHOD_POST = "POST"; private static final String METHOD_GET = "GET"; private static final int HTTP_OK = 200; /** * 已Get方式模拟Http请求 */ public String httpGet(String urlStr) { URL url = null; HttpURLConnection conn = null; InputStream inStream = null; String response = null; try { url = new URL(urlStr); conn = (HttpURLConnection) url.openConnection(); conn.setDoInput(true); conn.setConnectTimeout(TIME_OUT); conn.setRequestMethod(METHOD_GET); conn.setRequestProperty("accept", "*/*"); conn.connect(); int responseCode = conn.getResponseCode(); if (responseCode == HTTP_OK) { inStream = conn.getInputStream(); response = getResponse(inStream); } else { response = "返回码："+responseCode; } } catch (Exception e) { e.printStackTrace(); } finally { conn.disconnect(); } return response; } public String httpPost(String urlStr, String params) { byte[] data = params.getBytes(); URL url = null; HttpURLConnection conn = null; InputStream inStream = null; String response = null; try { url = new URL(urlStr); conn = (HttpURLConnection) url.openConnection(); conn.setConnectTimeout(TIME_OUT); conn.setDoOutput(true); conn.setDoInput(true); conn.setUseCaches(false); conn.setRequestMethod(METHOD_POST); conn.setRequestProperty("Connection", "Keep-Alive"); conn.setRequestProperty("Charset", "UTF-8"); conn.setRequestProperty("Content-Length", String.valueOf(data.length)); conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); conn.connect(); DataOutputStream outputStream = new DataOutputStream(conn.getOutputStream()); outputStream.write(data); outputStream.flush(); outputStream.close(); int responseCode = conn.getResponseCode(); if (responseCode == HTTP_OK) { inStream = conn.getInputStream(); response = getResponse(inStream); } else { response = "返回码："+responseCode; } } catch (Exception e) { e.printStackTrace(); } finally { conn.disconnect(); } return response; } private String getResponse(InputStream inStream) throws IOException { ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); int len = -1; byte[] buffer = new byte[1024]; while((len=inStream.read(buffer))!=-1) { outputStream.write(buffer, 0, len); } byte[] data = outputStream.toByteArray(); return new String(data); } }