HTTPClientUtil.java
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package com.server.utils;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import javax.servlet.http.HttpServletRequest;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
/**
* Created by stone on 2017/6/14.
*/
public class HTTPClientUtil {
public static String getPublicService(Map<String, String> map, String url,String charset)
throws Exception {
HttpClient httpClient = null;
HttpPost httpPost = null;
String result = null;
try{
httpClient = new DefaultHttpClient();
httpPost = new HttpPost(url);
//设置参数
List<NameValuePair> list = new ArrayList<NameValuePair>();
Iterator iterator = map.entrySet().iterator();
while(iterator.hasNext()){
Entry<String,String> elem = (Entry<String, String>) iterator.next();
list.add(new BasicNameValuePair(elem.getKey(),elem.getValue()));
}
if(list.size() > 0){
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list,charset);
httpPost.setEntity(entity);
}
HttpResponse response = httpClient.execute(httpPost);
if(response != null){
HttpEntity resEntity = response.getEntity();
if(resEntity != null){
result = EntityUtils.toString(resEntity,charset);
}
}
}catch(Exception ex){
ex.printStackTrace();
}
return result;
}
public static String getUrl(HttpServletRequest request){
StringBuffer url = request.getRequestURL();
String visitUrl = url.delete(url.length() - request.getRequestURI().length(), url.length()).toString();
return visitUrl;
}
}