【Android】Http请求

比较简单直接贴代码了。

package jftt.test;import java.io.IOException;import java.util.List;import org.apache.http.HttpResponse;import org.apache.http.HttpStatus;import org.apache.http.NameValuePair;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.HttpClient;import org.apache.http.client.entity.UrlEncodedFormEntity;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.params.BasicHttpParams;import org.apache.http.params.HttpConnectionParams;import org.apache.http.params.HttpParams;import android.util.Log;public class HttpRequest {/** *Post请求 */public void doPost(String url , List<NameValuePair> nameValuePairs){//新建HttpClient对象 HttpClient httpclient = new DefaultHttpClient();//创建POST连接HttpPost httppost = new HttpPost(url);try {////使用PSOT方式，必须用NameValuePair数组传递参数//List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();//nameValuePairs.add(new BasicNameValuePair("id", "12345"));//nameValuePairs.add(new BasicNameValuePair("stringdata","hps is Cool!"));httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));HttpResponse response = httpclient.execute(httppost);} catch (ClientProtocolException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}/** *Get请求 */public void doGet(String url){HttpParams httpParams = new BasicHttpParams(); HttpConnectionParams.setConnectionTimeout(httpParams,30000); HttpConnectionParams.setSoTimeout(httpParams, 30000); HttpClient httpClient = new DefaultHttpClient(httpParams); // GET HttpGet httpGet = new HttpGet(url);try {HttpResponse response = httpClient.execute(httpGet);if (response.getStatusLine().getStatusCode() != HttpStatus.SC_OK){Log.i("GET", "Bad Request!");}} catch (IOException e) {e.printStackTrace();}}}

需要主要的是:

1. 使用POST方式时，传递参数必须使用NameValuePair数组

2. 使用GET方式时，通过URL传递参数，注意写法

3.通过setEntity方法来发送HTTP请求

4.通过DefaultHttpClient 的 execute方法来获取HttpResponse

5. 通过getEntity()从Response中获取内容

String content = EntityUtils.toString(response.getEntity());

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