LetvHttpJavaHandler.java

package com.letv.http;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

import org.apache.http.HttpStatus;

import com.letv.http.impl.LetvHttpBaseParameter;

/**
 * 网络请求处理类，java实现
 * */

public final class LetvHttpJavaHandler implements LetvHttpBaseHandler{
	
	/**
	 * GET 请求
	 * */
	public final String doGet(LetvHttpBaseParameter<?,?,?> params) throws IOException {
		if(params == null){
			return null;
		}
		String baseUrl ;
		URL url;
		String response = null ;
		HttpURLConnection httpConnection = null;
		InputStream is = null ;
		
		try {
			baseUrl = params.getBaseUrl() + params.encodeUrl();
			LetvHttpLog.Log("GET  " + baseUrl);
			url = new URL(baseUrl);
			httpConnection = (HttpURLConnection) url.openConnection();
			httpConnection.setRequestMethod("GET");
			httpConnection.setReadTimeout(LetvHttpConstant.READ_TIMEOUT);
			httpConnection.setConnectTimeout(LetvHttpConstant.CONNECT_TIMEOUT);
			httpConnection.connect();
			int responseCode = httpConnection.getResponseCode();
			if (responseCode == HttpStatus.SC_OK) {
				is = httpConnection.getInputStream();
			} else {
				if(LetvHttpConstant.isDebug){
					is = httpConnection.getErrorStream();
					response = read(is);
					LetvHttpLog.Err(response);
				}
				throw new IOException("responseCode is not 200");
			}
			response = read(is);
//			LetvHttpLog.Log(response);
			return response ;
		} finally {
			httpConnection.disconnect();
			if(is != null){try {is.close();} catch (Exception e) {e.printStackTrace();}}
			url = null ;
			response = null ;
			httpConnection = null ;
			is = null ;
		}
	}

	
	/**
	 * POST 请求
	 * */
	public final String doPost(LetvHttpBaseParameter<?,?,?> params) throws IOException {
		if(params == null){
			return null;
		}
		URL url;
		String response = null ;
		HttpURLConnection httpConnection = null;
		InputStream is = null ;
		
		try {
			url = new URL(params.getBaseUrl());
			httpConnection = (HttpURLConnection) url.openConnection();

			httpConnection.setRequestMethod("POST");
			httpConnection.setReadTimeout(LetvHttpConstant.READ_TIMEOUT);
			httpConnection.setConnectTimeout(LetvHttpConstant.CONNECT_TIMEOUT);
			httpConnection.setDoOutput(true);
			httpConnection.connect();
			String p = params.encodeUrl().toString() ;
			LetvHttpLog.Log("POST  " + params.getBaseUrl() + "?" + p);
			httpConnection.getOutputStream().write(p.toString().getBytes());

			int responseCode = httpConnection.getResponseCode();

			if (responseCode == HttpStatus.SC_OK) {
				is = httpConnection.getInputStream();
			} else {
				if(LetvHttpConstant.isDebug){
					is = httpConnection.getErrorStream();
					response = read(is);
					LetvHttpLog.Err(response);
				}
				throw new IOException("responseCode is not 200");
			}

			response = read(is);
//			LetvHttpLog.Log(response);
			return response ;
		} finally {
			httpConnection.disconnect();
			if(is != null){try {is.close();} catch (Exception e) {e.printStackTrace();}}
			url = null ;
			response = null ;
			httpConnection = null ;
			is = null ;
		}
	}
	
	/**
	 * 将回来的IO流转化为字符串
	 * */
	private final String read(InputStream in) throws IOException {
		if(in == null){
			return null ;
		}
		InputStreamReader r = null ;
		String result = null ;
		char[] buf = new char[100] ;
		try{
			StringBuilder sb = new StringBuilder();
			r = new InputStreamReader(in);
			int len = 0 ;
			while ((len = r.read(buf)) != -1) {
				sb.append(buf , 0 , len);
			}
			
			result = sb.toString();
			
			return result ;
		} finally{
			if(r != null){r.close();}
			r = null ;
			result = null ;
			buf = null ;
			in = null ;
		}
	}
}