httpclient-4.1.1.jar
httpcore-4.2.jar
commons-logging-1.1.jar
import java.io.IOException;import java.io.UnsupportedEncodingException;import java.net.URLEncoder;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import org.apache.http.HttpResponse;import org.apache.http.client.ClientProtocolException;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.message.BasicNameValuePair;import org.apache.http.protocol.HTTP;import org.apache.http.util.EntityUtils;public final class TestHttpPost { /** * 执行一个HTTP GET请求，返回请求响应的HTML * * @param url * 请求的URL地址 * @param queryString * 请求的查询参数,可以为null * @return 返回请求响应的HTML */ public static String doGet(String url, String name, String queryString) { String strResult = null; try {//转码 name = URLEncoder.encode(name, "UTF-8"); queryString = URLEncoder.encode(queryString, "UTF-8"); } catch (UnsupportedEncodingException e) { // TODO Auto-generated catch block e.printStackTrace(); } String uriAPI = "http://127.0.0.1/html4/login_mobile.php?" + name + "=" + queryString; DefaultHttpClient client = new DefaultHttpClient(); HttpGet httpGet = new HttpGet(uriAPI); HttpResponse httpResponse; try { httpResponse = client.execute(httpGet); if (httpResponse.getStatusLine().getStatusCode() == 200) { // 第3步：使用getEntity方法获得返回结果 strResult = EntityUtils.toString(httpResponse.getEntity()); // 去掉返回结果中的"\r"字符， } } catch (ClientProtocolException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return strResult; } /** * 执行一个HTTP POST请求，返回请求响应的HTML * * @param url * 请求的URL地址 * @param params * 请求的查询参数,可以为null * @return 返回请求响应的HTML * @throws IOException * @throws IllegalStateException */ public static String doPost(String url, Map<String, String> params) throws IllegalStateException, IOException { String strResult = ""; DefaultHttpClient httpClient = new DefaultHttpClient(); HttpPost post = new HttpPost(url); List<BasicNameValuePair> postData = new ArrayList<BasicNameValuePair>(); for (Map.Entry<String, String> entry : params.entrySet()) { postData.add(new BasicNameValuePair(entry.getKey(), entry .getValue())); System.out.print(entry.getValue()); } UrlEncodedFormEntity entity = new UrlEncodedFormEntity(postData,HTTP.UTF_8);//过时了? post.setEntity(entity); HttpResponse response = httpClient.execute(post); // 若状态码为200 ok if (response.getStatusLine().getStatusCode() == 200) { // 取出回应字串 strResult = EntityUtils.toString(response.getEntity()); } return strResult; } public static void main(String[] args) throws IllegalStateException, IOException { HashMap<String, String> user = new HashMap<String, String>(); user.put("username", "admin"); user.put("password", "123"); String post = doPost("http://127.0.0.1/html4/login_mobile.php", user); String get = doGet("http://127.0.0.1/html4/login_mobile.php", "name", "admin"); System.out.println("Post:" + post); System.out.println("Get:" + get); }}
