以下代码全部功能完善，并且亲测，线上正在使用，大家可以放心使用，如果有什么问题，可以给我留言。
package com.xhrd.dev.util.httpclient; import Java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.util.Iterator; import java.util.Map; import java.util.Map.Entry; import org.apache.commons.httpclient.HttpClient; import org.apache.commons.httpclient.HttpException; import org.apache.commons.httpclient.HttpStatus; import org.apache.commons.httpclient.methods.GetMethod; import org.apache.commons.httpclient.methods.PostMethod; import org.apache.http.message.BasicNameValuePair;
public class HttpClientUtil { /** * 请求Http post类型URL * * @param url 请求Url * @param map 请求参数 * @return */ public static String fireHttpPost(String url,Map<String,Object> map){ String json = ""; HttpClient client = new HttpClient(); PostMethod postMethod = new PostMethod(url); postMethod.addRequestHeader("Content-Type", "application/json;charset=UTF-8"); Iterator iterator = map.entrySet().iterator(); while(iterator.hasNext()){ Entry<String,Object> elem = (Entry<String, Object>) iterator.next(); postMethod.addParameter(elem.getKey(), elem.getValue().toString()); } try { int statusCode = client.executeMethod(postMethod); if(statusCode == HttpStatus.SC_OK){ json = postMethod.getResponseBodyAsString(); } } catch (HttpException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return json; } /** * 请求Http post类型URL * * @param url 请求Url * @return */ public static String fireHttpGet(String url){ String json = ""; HttpClient client = new HttpClient(); GetMethod getMethod = new GetMethod(url); getMethod.addRequestHeader("Content-Type", "application/json;charset=UTF-8"); try { int statusCode = client.executeMethod(getMethod); if(statusCode == HttpStatus.SC_OK){ json = getMethod.getResponseBodyAsString(); } } catch (HttpException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return json; } }
以上方法，一个为HttpClient Post请求，一个为 HttpClient get 请求。
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