HttpClient访问网络

HttpClient项目时Apache提供用于访问网络的类,对访问网络的方法进行了封装。在HttpURlConnection类中的输入输出操作,统一封装成HttpGet、HttpPost、HttpResponse

一、服务器端前台

1、发送GET请求的步骤:

(1)创建HttpClient对象:HttpClient httpClient=new DefaultHttpClient();

(2)创建HttpGet对象:HttpGet httpGet=new HttpGet("http://www.teachcourse.cn");

(3)添加发送参数:httpGet.setParams("姑娘的眼睛真大,好漂亮咯!");

(4)调用HttpClient对象的execute()方法发送请求:HttpResponse httpResponse=httpClient.execute();

2、案例演示:

 HttpClient httpClient=new DefaultHttpClient();

 HttpGet httpGet=new HttpGet("http://www.teachcourse.cn");

 try{

 HttpResponse httpResponse=httpClient.execute();

 if(httpResponse.getStatusLine().getStatusCode()==HttpStatus.SC_OK){//解释服务器响应

 result=EntityUtils.toString(httpResponse.getEntiry());//获取返回的字符串

 }else{result="请求失败!";}

 }catch(ClientProtocolException e){

 e.printStackTrace();

 }catch(IOException e){e.printStackTrace();};
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