HTTP访问协议封装

来源：互联网发布：梦里花落知多少书包网编辑：程序博客网时间：2024/05/21 12:42

此封装类可以直接调用接口

package com.google.zxing.client.android.util;

import java.io.IOException;

import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
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.util.Log;

public class HttpUtil {
//声明Based URL常量
// public static final String BASE_URL="http://192.168.1.125:8080";

//服务端的

// public static final String BASE_URL="http://www.bai.cn";

//通过URL获取HttpGet对象
public static HttpGet getHttpGet(String url){
  //实例化HttpGet
  HttpGet request = new HttpGet(url);
  return request;
}

//通过URL获取HttpPost对象
public static HttpPost getHttpPost(String url){
  HttpPost request = new HttpPost(url);
  return request;
}
//通过HttpGet获得HttpResponse对象
public static HttpResponse getHttpResponse(HttpGet request) throws ClientProtocolException, IOException{
  HttpResponse response= new DefaultHttpClient().execute(request);
  return response;
}
//通过HttpPost获得HttpResponse对象
public static HttpResponse getHttpResponse(HttpPost request) throws ClientProtocolException, IOException{
  HttpResponse response = new DefaultHttpClient().execute(request);
  return response;
}

/**
* 通过URL发送post请求,返回请求结果
*/
public static String queryStringForPost(String url){
  //获得HttpPost实例
  HttpPost request = HttpUtil.getHttpPost(url);
  String result = null ;
  try {
   HttpResponse response =HttpUtil.getHttpResponse(request);
   //判断是否请求成功
   if(response.getStatusLine().getStatusCode()==200){
    //获得返回结果
    result = EntityUtils.toString(response.getEntity());
    return result;
   }
  } catch (Exception e) {
   e.printStackTrace();
   result ="网络异常";
   Log.i("Other", "走这里了?");
   return result;
  }
  return null;
}
/**
* 通过HttpPost发送get 请求,返回请求结果
*/
public static String queryStringForGet(String url){
  //获得HttpPost实例
  HttpGet request = HttpUtil.getHttpGet(url);
  String result = null ;
  try {
   HttpResponse response =HttpUtil.getHttpResponse(request);
   //判断是否请求成功
   if(response.getStatusLine().getStatusCode()==200){
    //获得返回结果
    result = EntityUtils.toString(response.getEntity());
    return result;
   }
  } catch (Exception e) {
   e.printStackTrace();
   result ="网络异常";
   return result;
  }
  return null;
}
/**
* 通过HttpPost发送Post请求,返回请求结果
*/
public static String queryStringForPost(HttpPost request){
  String result = null ;
  try {
   //获取HttpResponse实例
   HttpResponse response =HttpUtil.getHttpResponse(request);
   //判断是否请求成功
   if(response.getStatusLine().getStatusCode()==200){
    //获得返回结果
    result = EntityUtils.toString(response.getEntity());
    return result;
   }
  } catch (Exception e) {
   e.printStackTrace();
   result ="网络异常";
   Log.i("Other", "123sdfgds");
   return result;
  }
  return null;
}

}