HttpClient串連池

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package cn.com.cfets.imt.impl.spring.util;import org.apache.http.HeaderElement;import org.apache.http.HeaderElementIterator;import org.apache.http.HttpResponse;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.config.RequestConfig;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.conn.ConnectionKeepAliveStrategy;import org.apache.http.entity.ByteArrayEntity;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.BasicHeaderElementIterator;import org.apache.http.protocol.HTTP;import org.apache.http.protocol.HttpContext;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.util.StringUtils;import java.io.IOException;import java.net.URI;import java.net.URISyntaxException;import java.net.URL;import java.util.Map;/** * 串連池 * Created by fenglei.ma on 2018/5/23. 17:54 */public class HttpClientUtils {    private static final Logger log = LoggerFactory.getLogger(HttpClientUtils.class);    public static int CONNECT_TIME = 3 * 1000;    public static int SOCKET_TIME  = 3 * 1000; // 毫秒    public static int REQUEST_TIME = 3 * 1000;    // 是否重連    public static String ISRECONN = "N";    // 這裡使用串連池防止高並發大量請求時來提高輸送量    public static PoolingHttpClientConnectionManager cm = null;    // 使用預設的httpClient執行個體.    public static CloseableHttpClient httpClient = null;    // 每個route最大串連數    private static final int count = 32;    // 整個串連池的最大串連數    private static final int totalCount = 500;    private static final int Http_Default_Keep_Time =15000;    public static synchronized void initPools() {        if (httpClient == null) {            cm = new PoolingHttpClientConnectionManager();            cm.setDefaultMaxPerRoute(count);            cm.setMaxTotal(totalCount);            // 禁用重新導向  setRedirectsEnabled(Boolean.FALSE)            if("Y".equalsIgnoreCase(ISRECONN)){                httpClient = HttpClients.custom().setDefaultRequestConfig(                        RequestConfig.custom().setRedirectsEnabled(Boolean.FALSE).build()                ).setKeepAliveStrategy(defaultStrategy).setConnectionManager(cm).build();            }else if("N".equalsIgnoreCase(ISRECONN) || StringUtils.isEmpty(ISRECONN)){                /**                 * automaticRetriesDisabled類型是boolean，預設值是false，                 * 這裡設定為true,禁止重試串連3次                 */                httpClient = HttpClients.custom().setDefaultRequestConfig(                        RequestConfig.custom().setRedirectsEnabled(Boolean.FALSE).build()                ).setKeepAliveStrategy(defaultStrategy).setConnectionManager(cm).disableAutomaticRetries().build();            }        }    }    /**     * 配置請求的逾時設定     * @param httpRequestBase     */    private static void config(HttpRequestBase httpRequestBase) {        RequestConfig requestConfig = RequestConfig.custom()                .setConnectionRequestTimeout(REQUEST_TIME)                .setConnectTimeout(CONNECT_TIME).setSocketTimeout(SOCKET_TIME).build();        httpRequestBase.setConfig(requestConfig);    }    /**     * Http connection keepAlive 設定     */    public static ConnectionKeepAliveStrategy defaultStrategy = new ConnectionKeepAliveStrategy() {        public long getKeepAliveDuration(HttpResponse response, HttpContext context) {            HeaderElementIterator it = new BasicHeaderElementIterator(response.headerIterator(HTTP.CONN_KEEP_ALIVE));            int keepTime = Http_Default_Keep_Time;            while (it.hasNext()) {                HeaderElement he = it.nextElement();                String param = he.getName();                String value = he.getValue();                if (value != null && param.equalsIgnoreCase("timeout")) {                    try {                        return Long.parseLong(value) * 1000;                    } catch (Exception e) {                        log.error("format KeepAlive timeout exception, exception:" + e.toString());                    }                }            }            return keepTime * 1000;        }    };    /**     * Get 請求     * @param path 請求url     * @param jsonParam 請求參數     * @param allHeader 要求標頭     * @return     */    public static HttpResponse executeGetMothedRequest(String path, String jsonParam, Map<String, String> allHeader) {        HttpGet httpget = null;        HttpResponse response = null;        try {            if (!StringUtils.isEmpty(jsonParam)) {                path = path + "?" + jsonParam;                log.info(path);            }            URL url = new URL(path);            URI uri = new URI(url.getProtocol(), null, url.getHost(), url.getPort(), url.getPath(), url.getQuery(), null);            httpget = new HttpGet(uri);            httpget.setHeader("Content-Type", "application/json");            for (Map.Entry<String, String> e : allHeader.entrySet()) {                httpget.setHeader(e.getKey(), e.getValue());            }            if(httpClient == null){                initPools();            }            config(httpget);            response = httpClient.execute(httpget);        } catch (Exception e) {            log.error(e.getMessage(), e);        }        return response;    }    /**     * Post 請求     * @param url 請求url     * @param body  請求資料     * @param paramJson 請求參數     * @param allHeade 請求訊息頭     * @return     */    public static HttpResponse executePostMothedRequest(String url, byte[] body, String paramJson, Map<String, String> allHeade) {        HttpPost httppost = null;        HttpResponse response = null;        try {            if (!StringUtils.isEmpty(paramJson)) {                url = url + "?" + paramJson;                log.info(url);            }            httppost = new HttpPost(url);            // 訊息頭            for (Map.Entry<String, String> e : allHeade.entrySet()) {//                httppost.setHeader("Content-Type", "application/json");                httppost.setHeader(e.getKey(), e.getValue());            }            // 包含上傳檔案資料            if (!StringUtils.isEmpty(body)) {//                httppost.setHeader("Content-Type", "application/json");                httppost.setEntity(new ByteArrayEntity(body));            }            if(httpClient == null){                initPools();            }            config(httppost);            response = httpClient.execute(httppost);            if (response.getStatusLine().getStatusCode() >= 400) {                log.warn("Failed : HTTP error code :" + response.getStatusLine().getStatusCode());            }        } catch (Exception e) {            log.error(e.getMessage(), e);        }        return response;    }}

 

HttpClient串連池