Http请求工具包,做个记录

package common;


import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import org.apache.http.HttpEntity;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.*;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.util.EntityUtils;

import java.io.IOException;
import java.net.URISyntaxException;
import java.nio.charset.Charset;
import java.util.Map;

/**
 * Created by hx-pc on 17-5-25.
 */
public class HttpClientUtil {

    private static final Gson gson = new GsonBuilder().create();

    public static  
 
   T get(String url, Map
  
    param, Class
   
     responseClass) throws IOException, URISyntaxException { URIBuilder uriBuilder = getUriBuild(url); if (param != null) { for (Map.Entry entry : param.entrySet()) { uriBuilder = uriBuilder.setParameter(entry.getKey().toString(), entry.getValue().toString()); } } HttpGet httpGet = new HttpGet(uriBuilder.build()); return doRequest(responseClass, httpGet); } public static 
    
      T post(String url, Map
     
       param, Class
      
        responseClass) throws IOException, URISyntaxException { URIBuilder uriBuilder = getUriBuild(url); HttpPost httpPost = new HttpPost(uriBuilder.build()); if (param != null) { StringEntity stringEntity = new StringEntity(gson.toJson(param), Charset.defaultCharset()); stringEntity.setContentType("application/json;charset=UTF-8"); stringEntity.setContentEncoding("UTF-8"); httpPost.setEntity(stringEntity); } return doRequest(responseClass, httpPost); } public static 
       
         T delete(String url, Map
        
          param, Class
         
           responseClass) throws IOException, URISyntaxException { URIBuilder uriBuilder = getUriBuild(url); if (param != null) { for (Map.Entry entry : param.entrySet()) { uriBuilder = uriBuilder.setParameter(entry.getKey().toString(), entry.getValue().toString()); } } HttpDelete httpDelete = new HttpDelete(uriBuilder.build()); return doRequest(responseClass, httpDelete); } public static 
          
            T put(String url, Map
           
             param, Class
            
              responseClass) throws IOException, URISyntaxException { URIBuilder uriBuilder = getUriBuild(url); HttpPut httpPut = new HttpPut(uriBuilder.build()); if (param != null) { StringEntity stringEntity = new StringEntity(gson.toJson(param), Charset.defaultCharset()); stringEntity.setContentType("application/json;charset=UTF-8"); stringEntity.setContentEncoding("UTF-8"); httpPut.setEntity(stringEntity); } return doRequest(responseClass, httpPut); } private static 
             
               T doRequest(Class
              
                responseClass, HttpRequestBase httpRequestBase) throws IOException, URISyntaxException { CloseableHttpClient httpclient = getHttpClient(); httpRequestBase = buildHeader(httpRequestBase); return getResponse(responseClass, httpclient, httpRequestBase); } private static HttpRequestBase buildHeader(HttpRequestBase httpRequestBase) { httpRequestBase.addHeader("Content-Type","application/json;charset=UTF-8"); return httpRequestBase; } private static CloseableHttpClient getHttpClient() { RequestConfig defaultRequestConfig = RequestConfig.custom() .setConnectTimeout(1000) .setSocketTimeout(120*1000) .build(); return HttpClientBuilder.create().setDefaultRequestConfig(defaultRequestConfig).build(); } private static 
               
                 T getResponse(Class
                
                  responseClass, CloseableHttpClient httpclient, HttpRequestBase httpRequestBase) throws IOException { CloseableHttpResponse response = httpclient.execute(httpRequestBase); HttpEntity entity = response.getEntity(); String body = EntityUtils.toString(entity); EntityUtils.consume(entity); response.addHeader("Content-Type","application/json;charset=UTF-8"); response.close(); return gson.fromJson(body, responseClass); } private static URIBuilder getUriBuild(String url) throws URISyntaxException { return new URIBuilder().setScheme("http").setHost("127.0.0.1").setPort(8080).setPath(url); } }