httpClient4.2.1连接池 实现post get请求 https请求

项目dome github https://github.com/gyn781369549/httpClient
pom.xml依赖的包

    <!-- https://mvnrepository.com/artifact/log4j/log4j -->    <dependency>        <groupId>log4j</groupId>        <artifactId>log4j</artifactId>        <version>1.2.17</version>    </dependency>    <!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient -->    <dependency>        <groupId>org.apache.httpcomponents</groupId>        <artifactId>httpclient</artifactId>        <version>4.2.1</version>    </dependency>    <!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->    <dependency>        <groupId>com.alibaba</groupId>        <artifactId>fastjson</artifactId>        <version>1.2.41</version>    </dependency>

package httpClient.util;import java.io.ByteArrayInputStream;import java.io.IOException;import java.security.cert.CertificateException;import java.security.cert.X509Certificate;import java.util.Date;import javax.net.ssl.SSLContext;import javax.net.ssl.TrustManager;import javax.net.ssl.X509TrustManager;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.HttpVersion;import org.apache.http.ParseException;import org.apache.http.client.HttpClient;import org.apache.http.client.methods.HttpGet;import org.apache.http.client.methods.HttpPost;import org.apache.http.conn.scheme.PlainSocketFactory;import org.apache.http.conn.scheme.Scheme;import org.apache.http.conn.scheme.SchemeRegistry;import org.apache.http.conn.ssl.SSLSocketFactory;import org.apache.http.entity.StringEntity;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.impl.client.DefaultHttpRequestRetryHandler;import org.apache.http.impl.conn.PoolingClientConnectionManager;import org.apache.http.params.BasicHttpParams;import org.apache.http.params.CoreConnectionPNames;import org.apache.http.params.HttpConnectionParams;import org.apache.http.params.HttpParams;import org.apache.http.params.HttpProtocolParams;import org.apache.http.util.EntityUtils;import com.alibaba.fastjson.JSONObject;public class httpUtil {    private static final Log log = LogFactory.getLog(httpUtil.class);    private static HttpClient httpClient = getHttpClient();    private static HttpClient postClient = null;    private static HttpResponse httpResponse = null;    /**     * 适合多线程的HttpClient,用httpClient4.2.1实现     *      * @return DefaultHttpClient     */    public static DefaultHttpClient getHttpClient() {        // 设置组件参数, HTTP协议的版本,1.1/1.0/0.9        HttpParams params = new BasicHttpParams();        HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);        HttpProtocolParams.setUserAgent(params, "HttpComponents/1.1");        HttpProtocolParams.setUseExpectContinue(params, true);        // 设置连接超时时间        final int REQUEST_TIMEOUT = 15 * 1000; // 设置请求超时2秒钟        final int SO_TIMEOUT = 15 * 1000; // 设置等待数据超时时间2秒钟        final long CONN_MANAGER_TIMEOUT = 500L; //        // 该值就是连接不够用的时候等待超时时间，一定要设置，而且不能太大        //        HttpConnectionParams.setConnectionTimeout(params, REQUEST_TIMEOUT);        HttpConnectionParams.setSoTimeout(params, SO_TIMEOUT);        params.setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, REQUEST_TIMEOUT);        params.setParameter(CoreConnectionPNames.SO_TIMEOUT, SO_TIMEOUT);        // params.setLongParameter(ClientPNames.CONN_MANAGER_TIMEOUT,CONN_MANAGER_TIMEOUT);        params.setBooleanParameter(CoreConnectionPNames.STALE_CONNECTION_CHECK, true);// 在提交请求之前                                                                                        // 测试连接是否可用        // 设置访问协议        SchemeRegistry schreg = new SchemeRegistry();        schreg.register(new Scheme("http", 80, PlainSocketFactory.getSocketFactory()));        schreg.register(new Scheme("https", 443, SSLSocketFactory.getSocketFactory()));        // 多连接的线程安全的管理器        PoolingClientConnectionManager pccm = new PoolingClientConnectionManager(schreg);        pccm.setMaxTotal(200); // 客户端总并行链接最大数 MaxtTotal是整个池子的大小；        pccm.setDefaultMaxPerRoute(200); // 每个主机的最大并行链接数        DefaultHttpClient httpClient = new DefaultHttpClient(pccm, params);        httpClient.setHttpRequestRetryHandler(new DefaultHttpRequestRetryHandler(0, false));// 另外设置http                                                                                            // client的重试次数，默认是3次；当前是禁用掉（如果项目量不到，这个默认即可）        return httpClient;    }    /**     * 发送get请求     *      * @param url     * @return     * @throws IOException     */    public static String sendGet(String url) throws IOException {        int code = 0;        HttpGet get = new HttpGet(url);        try {            String cont = null;            if (httpClient == null) {                httpClient = getHttpClient();            }            httpResponse = httpClient.execute(get);            code = httpResponse.getStatusLine().getStatusCode();            System.out.println(                    new Date("yyyy mm dd hh mm ss") + ",124row WechatKit.sendGet code:" + code + ",URL " + url);            if (code >= 200 && code < 300) {                HttpEntity entity = httpResponse.getEntity();                if (entity != null) {                    cont = EntityUtils.toString(entity);                    System.out.println(cont);                    return cont;                } else {                    return Integer.toString(code);                }            } else {                return Integer.toString(code);            }        } catch (Exception e) {            e.printStackTrace();        } finally {            // if(get!=null){            // get.reset();            // }            if (httpResponse != null) {                EntityUtils.consume(httpResponse.getEntity());            }        }        return Integer.toString(code);    }    /**     * 通过post发送!     *      * @param url     * @param json     * @return     * @throws IOException     * @throws ParseException     */    public static String post(String url, JSONObject json, String token) throws ParseException, IOException {        HttpPost post = new HttpPost(url);        int code = 0;        try {            if (postClient == null) {                postClient = getClient(true);            }            StringEntity s = new StringEntity(json.toString());            s.setContentEncoding("UTF-8");            s.setContentType("application/json");// :                                                    // {“Content-Type”:”application/json”,”Authorization”:”Bearer                                                    // ${token}”}            // post.addHeader("Content-Type", "application/json");            if (token != null) {                post.addHeader("Authorization", "Bearer " + token);            }            post.setEntity(s);            httpResponse = postClient.execute(post);            code = httpResponse.getStatusLine().getStatusCode();            System.out.println("postcode:" + code);            if (code >= 200 && code < 300) {                HttpEntity entity = httpResponse.getEntity();                if (entity != null) {                    String charset = EntityUtils.toString(entity);                    System.out.println("post返回的东西:" + charset);                    return charset;                } else {                    return null;                }            } else {                return null;            }        } catch (Exception e) {            e.printStackTrace();        } finally {            if (httpResponse != null) {                EntityUtils.consume(httpResponse.getEntity());            }            if (post != null) { // 不要忘记释放，尽量通过该方法实现，                post.releaseConnection();                // 存在风险，不要用                // postMethod.setParameter("Connection", "close");                // InputStream is = postMethod.getResponseBodyAsStream();                // is.clsoe();也会关闭并释放连接的            }        }        return null;    }    /**     * 通过post发送!     *      * @param url     * @param json     * @return     * @throws IOException     * @throws ParseException     */    public static byte[] post(String url, JSONObject json) throws ParseException, IOException {        HttpPost post = new HttpPost(url);        int code = 0;        byte[] responseContent=null;        try {            if (postClient == null) {                postClient = getClient(true);            }            StringEntity s = new StringEntity(json.toString());            s.setContentEncoding("UTF-8");            s.setContentType("text/plain");// :                                                    // {“Content-Type”:”application/json”,”Authorization”:”Bearer                                                    // ${token}”}            // post.addHeader("Content-Type", "application/json");            post.setEntity(s);            httpResponse = postClient.execute(post);            code = httpResponse.getStatusLine().getStatusCode();            System.out.println("postcode:" + code);            if (code >= 200 && code < 300) {                 responseContent = EntityUtils.toByteArray(httpResponse.getEntity());                  return responseContent;            } else {                return null;            }        } catch (Exception e) {            e.printStackTrace();        } finally {            if (httpResponse != null) {                EntityUtils.consume(httpResponse.getEntity());            }            if (post != null) { // 不要忘记释放，尽量通过该方法实现，                post.releaseConnection();                // 存在风险，不要用                // postMethod.setParameter("Connection", "close");                // InputStream is = postMethod.getResponseBodyAsStream();                // is.clsoe();也会关闭并释放连接的            }        }        return null;    }    /**     *      *      * @param isSSL     * @return     */    public static HttpClient getClient(boolean isSSL) {        HttpClient httpClient = getHttpClient();        if (isSSL) {            X509TrustManager xtm = new X509TrustManager() {                public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {                }                public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {                }                public X509Certificate[] getAcceptedIssuers() {                    return null;                }            };            try {                SSLContext ctx = SSLContext.getInstance("TLS");                ctx.init(null, new TrustManager[] { xtm }, null);                SSLSocketFactory socketFactory = new SSLSocketFactory(ctx);                httpClient.getConnectionManager().getSchemeRegistry().register(new Scheme("https", 443, socketFactory));            } catch (Exception e) {                throw new RuntimeException();            }        }        return httpClient;    }    public static void main(String[] args) throws ParseException, IOException {    }}