httpclient

从网上看到的HttpClient文章调用时在自己的项目中运行有点不对，用URL调用时不对，使用该下面的方法可以成功,httpclient使用4.3.3版本
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.PoolingClientConnectionManager;
import org.apache.http.util.EntityUtils;

import com.aisino.idm.client.utils.AuthUtils;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;

public static DefaultHttpClient client = getClient();

final String CONTENT_TYPE_TEXT_JSON = "text/json";
DefaultHttpClient client = new DefaultHttpClient(new PoolingClientConnectionManager());

HttpPost httpPost = new HttpPost(url);
httpPost.setHeader("Content-Type", "application/json;charset=UTF-8");

String js = JSON.toJSONString(params);
StringEntity se = new StringEntity(js);
se.setContentType(CONTENT_TYPE_TEXT_JSON);

httpPost.setEntity(se);

CloseableHttpResponse response = null;

response = client.execute(httpPost);
HttpEntity entity = null;
entity = response.getEntity();
String s = EntityUtils.toString(entity, "UTF-8");
JSONObject jsonObject = JSON.parseObject(s);