Android中使用HttpGet和HttpPost访问HTTP资源和区别

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

[java] view
plaincopy

public String getResultForHttpGet(String name,String pwd) throws ClientProtocolException, IOException{

//服务器 ：服务器项目 ：servlet名称

String path="http://192.168.5.21:8080/test/test";

String uri=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



String result="";



HttpGet httpGet=new HttpGet(uri);//编者按：与HttpPost区别所在，这里是将参数在地址中传递

HttpResponse response=new DefaultHttpClient().execute(httpGet);

if(response.getStatusLine().getStatusCode()==200){

HttpEntity entity=response.getEntity();

result=EntityUtils.toString(entity, HTTP.UTF_8);

}

return result;

}

（二）HttpPost ：doPost()方法

//doPost():将参数打包到http报头中传递

[java] view
plaincopy

public String getReultForHttpPost(String name,String pwd) throws ClientProtocolException, IOException{

//服务器 ：服务器项目 ：servlet名称

String path="http://192.168.5.21:8080/test/test";

HttpPost httpPost=new HttpPost(path);

List<NameValuePair>list=new ArrayList<NameValuePair>();

list.add(new BasicNameValuePair("name", name));

list.add(new BasicNameValuePair("pwd", pwd));

httpPost.setEntity(new UrlEncodedFormEntity(list,HTTP.UTF_8));//编者按：与HttpGet区别所在，这里是将参数用List传递



String result="";



HttpResponse response=new DefaultHttpClient().execute(httpPost);

if(response.getStatusLine().getStatusCode()==200){

HttpEntity entity=response.getEntity();

result=EntityUtils.toString(entity, HTTP.UTF_8);

}

return result;

}

-------------------------------------------------------------------------------------------------------

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。