JAVA HttpClient(普通参数、JSON格式参数)

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代码如下：

import com.alibaba.fastjson.JSONObject;import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.NameValuePair;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.entity.StringEntity;import org.apache.http.impl.client.CloseableHttpClient;import org.apache.http.impl.client.HttpClients;import org.apache.http.message.BasicNameValuePair;import org.apache.http.util.EntityUtils;import java.io.IOException;import java.io.UnsupportedEncodingException;import java.util.ArrayList;import java.util.List;import java.util.Map;/** * HttpClient客户端 * Created by itdragons on 2017-8-8. */public class HttpClient {/** * post请求-json参数 */public static String postHttp(String url, JSONObject paramJson) {return postHttp(url, new StringEntity(paramJson.toString(),"UTF-8"));}/** * post请求-参数 */public static String postHttp(String url, Map<String, String> paramMap) throws UnsupportedEncodingException {List<NameValuePair> params = new ArrayList<NameValuePair>();if(paramMap != null){for(Map.Entry<String,String> entry : paramMap.entrySet()){params.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));}}return postHttp(url, new UrlEncodedFormEntity(params, "UTF-8"));}/** * post请求 */private static String postHttp(String url, HttpEntity formEntity) {CloseableHttpClient client = null;HttpPost post = null;String result = "";try {client = HttpClients.createDefault();//HttpClient httpClient = new DefaultHttpClient();post = new HttpPost(url);post.setEntity(formEntity);HttpResponse resp = client.execute(post);HttpEntity entity = resp.getEntity();result = EntityUtils.toString(entity, "UTF-8");} catch (Exception e) {e.printStackTrace();} finally {//关闭连接，释放资源//httpClient.getConnectionManager().shutdown();httpClient = null;if (post != null) {post.releaseConnection();}if (client != null) {try {client.close();} catch (IOException e) {e.printStackTrace();}}}return result;}/** * get请求 */public static String getHttp(String url) {CloseableHttpClient client = null;HttpGet get = null;String result = "";try {client = HttpClients.createDefault();get = new HttpGet(url);HttpResponse resp = client.execute(get);HttpEntity entity = resp.getEntity();result = EntityUtils.toString(entity, "UTF-8");} catch (Exception e) {e.printStackTrace();} finally {//关闭连接，释放资源if (get != null) {get.releaseConnection();}if (client != null) {try {client.close();} catch (IOException e) {e.printStackTrace();}}}return result;}}