HttpUtils请求工具类的代码

import java.io.IOException; import java.io.UnsupportedEncodingException; import java.net.URISyntaxException; import java.util.ArrayList; import java.util.Map; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.http.HttpEntity; import org.apache.http.NameValuePair; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.config.RequestConfig; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.CloseableHttpResponse; import org.apache.http.client.methods.HttpGet;import org.apache.http.client.methods.HttpPost; import org.apache.http.client.methods.HttpRequestBase; 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.HttpClients; import org.apache.http.impl.conn.PoolingHttpClientConnectionManager; import org.apache.http.message.BasicNameValuePair; import org.apache.http.util.EntityUtils; import com.pingan.qhcs.map.audit.constant.CodeConstant; import com.pingan.qhcs.map.audit.exception.MapException; public class HttpClientUtil { protected static Log logger = LogFactory.getLog(HttpClientUtil.class); private static PoolingHttpClientConnectionManager cm; private static String EMPTY_STR = ""; private static String UTF_8 = "UTF-8"; private static void init() { if (cm == null) { cm = new PoolingHttpClientConnectionManager(); cm.setMaxTotal(50);// 整个连接池最大连接数cm.setDefaultMaxPerRoute(5);// 每路由最大连接数，默认值是2 } }/** * 通过连接池获取HttpClient * * @return */public static CloseableHttpClient getHttpClient() { init();return HttpClients.custom().setConnectionManager(cm).build(); }public static String httpGetRequest(String url) { HttpGet httpGet = new HttpGet(url);return getResult(httpGet); }public static String httpGetRequest(String url, Map params) throws URISyntaxException { URIBuilder ub = new URIBuilder(); ub.setPath(url); ArrayList pairs = covertParams2NVPS(params); ub.setParameters(pairs); HttpGet httpGet = new HttpGet(ub.build()); return getResult(httpGet); }public static String httpGetRequest(String url, Map headers, Map params)throws URISyntaxException { URIBuilder ub = new URIBuilder(); ub.setPath(url); ArrayList pairs = covertParams2NVPS(params); ub.setParameters(pairs); HttpGet httpGet = new HttpGet(ub.build());for (Map.Entry param : headers.entrySet()) { httpGet.addHeader(param.getKey(), String.valueOf(param.getValue())); }return getResult(httpGet); } public static String httpPostRequest(String url) { HttpPost httpPost = new HttpPost(url);return getResult(httpPost); } public static String httpPostRequest(String url, Map params) throws UnsupportedEncodingException { HttpPost httpPost = new HttpPost(url); ArrayList pairs = covertParams2NVPS(params); httpPost.setEntity(new UrlEncodedFormEntity(pairs, UTF_8));return getResult(httpPost); } public static String httpPostRequest(String url, Map headers, Map params)throws UnsupportedEncodingException { HttpPost httpPost = new HttpPost(url); for (Map.Entry param : headers.entrySet()) { httpPost.addHeader(param.getKey(), String.valueOf(param.getValue())); } ArrayList pairs = covertParams2NVPS(params); httpPost.setEntity(new UrlEncodedFormEntity(pairs, UTF_8));return getResult(httpPost); } public static String httpPostRequest(String url, Map headers, String strBody)throws Exception { HttpPost httpPost = new HttpPost(url);for (Map.Entry param : headers.entrySet()) { httpPost.addHeader(param.getKey(), String.valueOf(param.getValue())); } httpPost.setEntity(new StringEntity(strBody, UTF_8));return getResult(httpPost); } private static ArrayList covertParams2NVPS(Map params) { ArrayList pairs = new ArrayList(); for (Map.Entry param : params.entrySet()) { pairs.add(new BasicNameValuePair(param.getKey(), String.valueOf(param.getValue()))); }return pairs; }/** * 处理Http请求 * * setConnectTimeout：设置连接超时时间，单位毫秒。 * setConnectionRequestTimeout：设置从connect Manager获取Connection 超时时间，单位毫秒。这个属性是新加的属性，因为目前版本是可以共享连接池的。 * setSocketTimeout：请求获取数据的超时时间，单位毫秒。 如果访问一个接口，多少时间内无法返回数据，就直接放弃此次调用。 * * @param request * @return */private static String getResult(HttpRequestBase request) { RequestConfig requestConfig = RequestConfig.custom().setConnectTimeout(60000) .setConnectionRequestTimeout(5000).setSocketTimeout(60000).build(); request.setConfig(requestConfig);// 设置请求和传输超时时间 // CloseableHttpClient httpClient = HttpClients.createDefault(); CloseableHttpClient httpClient = getHttpClient(); try { CloseableHttpResponse response = httpClient.execute(request); //执行请求 // response.getStatusLine().getStatusCode(); HttpEntity entity = response.getEntity(); if (entity != null) { // long len = entity.getContentLength();// -1 表示长度未知 String result = EntityUtils.toString(entity); response.close(); // httpClient.close(); return result; } } catch (ClientProtocolException e) { logger.error("[maperror] HttpClientUtil ClientProtocolException : " + e.getMessage()); throw new MapException(CodeConstant.CODE_CONNECT_FAIL, "HttpClientUtil ClientProtocolException ：" + e.getMessage()); } catch (IOException e) { logger.error("[maperror] HttpClientUtil IOException : " + e.getMessage()); throw new MapException(CodeConstant.CODE_CONNECT_FAIL, "HttpClientUtil IOException ：" + e.getMessage()); } finally { } return EMPTY_STR; } }