Android中使用HttpGet和HttpPost访问HTTP资源

需求：用户登录（name:用户名，pwd:密码）

（一）HttpGet :doGet()方法
//doGet():将参数的键值对附加在url后面来传递

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publicStringgetResultForHttpGet(Stringname,Stringpwd)throwsClientProtocolException,IOException{
//服务器：服务器项目：servlet名称
Stringpath="http://192.168.5.21:8080/test/test";
Stringuri=path+"?name="+name+"&pwd="+pwd;
//name:服务器端的用户名，pwd:服务器端的密码
//注意字符串连接时不能带空格
Stringresult="";
HttpGethttpGet=newHttpGet(uri);//编者按：与HttpPost区别所在，这里是将参数在地址中传递
HttpResponseresponse=newDefaultHttpClient().execute(httpGet);
if(response.getStatusLine().getStatusCode()==200){
HttpEntityentity=response.getEntity();
result=EntityUtils.toString(entity,HTTP.UTF_8);
}
returnresult;
}

（二）HttpPost ：doPost()方法
//doPost():将参数打包到http报头中传递

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publicStringgetReultForHttpPost(Stringname,Stringpwd)throwsClientProtocolException,IOException{
//服务器：服务器项目：servlet名称
Stringpath="http://192.168.5.21:8080/test/test";
HttpPosthttpPost=newHttpPost(path);
List<NameValuePair>list=newArrayList<NameValuePair>();
list.add(newBasicNameValuePair("name",name));
list.add(newBasicNameValuePair("pwd",pwd));
httpPost.setEntity(newUrlEncodedFormEntity(list,HTTP.UTF_8));//编者按：与HttpGet区别所在，这里是将参数用List传递
Stringresult="";
HttpResponseresponse=newDefaultHttpClient().execute(httpPost);
if(response.getStatusLine().getStatusCode()==200){
HttpEntityentity=response.getEntity();
result=EntityUtils.toString(entity,HTTP.UTF_8);
}
returnresult;
}

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由此我们可知，HttpGet和HttpPost的区别在于前者是将参数在地址中传递，后者是将参数用List传递。

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