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  • HttpClientUtil 工具类

    /*
     * 
     *
     * FileName: s.java
     *
     * Description:TODO(用一句话描述该文件做什么) 
     *
     * Created: jiangzhanghong  2017年11月14日
     * 
     * |--------------------------------------------------History---------------------------------------------------|
     * |                                                                                                            |
     * |-----Author-----------|-------Date-------|----Version----|----------------------------Desc----------------------------| 
     * |    jiangzhanghong    |   2017年11月14日     |     1.0       | Create
     * |------------------------------------------------------------------------------------------------------------|
     */
    package com.dinfo.app.basic.util;
    
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.FileNotFoundException;
    /**
     * 
     * @author <a href="mailto:jiangzhanghong1@ultrapower.com.cn">jiangzhanghong</a>
     * @version 1.0
     * @date 2017年11月14日
     */
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.OutputStream;
    import java.io.UnsupportedEncodingException;
    import java.net.HttpURLConnection;
    import java.net.MalformedURLException;
    import java.net.ProtocolException;
    import java.net.URL;
    import java.nio.charset.UnsupportedCharsetException;
    import java.security.KeyManagementException;
    import java.security.NoSuchAlgorithmException;
    import java.security.cert.CertificateException;
    import java.security.cert.X509Certificate;
    import java.util.ArrayList;
    import java.util.HashMap;
    import java.util.List;
    import java.util.Map;
    
    import javax.net.ssl.SSLContext;
    import javax.net.ssl.SSLException;
    import javax.net.ssl.SSLSession;
    import javax.net.ssl.SSLSocket;
    import javax.net.ssl.TrustManager;
    import javax.net.ssl.X509TrustManager;
    
    import org.apache.http.Consts;
    import org.apache.http.HttpEntity;
    import org.apache.http.HttpResponse;
    import org.apache.http.HttpStatus;
    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.URLEncodedUtils;
    import org.apache.http.conn.scheme.Scheme;
    import org.apache.http.conn.ssl.SSLSocketFactory;
    import org.apache.http.conn.ssl.X509HostnameVerifier;
    import org.apache.http.entity.ContentType;
    import org.apache.http.entity.StringEntity;
    import org.apache.http.entity.mime.HttpMultipartMode;
    import org.apache.http.entity.mime.MultipartEntityBuilder;
    import org.apache.http.impl.client.CloseableHttpClient;
    import org.apache.http.impl.client.HttpClients;
    import org.apache.http.message.BasicHeader;
    import org.apache.http.message.BasicNameValuePair;
    import org.apache.http.protocol.HTTP;
    import org.apache.http.util.CharsetUtils;
    import org.apache.http.util.EntityUtils;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.beans.factory.annotation.Value;
    import org.springframework.stereotype.Component;
    
    /**
     * 封装了一些采用HttpClient发送HTTP请求的方法
     * 
     * @see 本工具所采用的是最新的HttpComponents-Client-4.2.1
     */
    @Component
    public class HttpClientUtil {
        private HttpClientUtil() {
        }
    
        private static Logger logger = LoggerFactory.getLogger(HttpClientUtil.class);
    
        private static int connectTimeout=6000;
        private static int socketTimeout=60000;
        private static int connectionRequestTimeout=6000;
        
        public static void main(String[] args) {
            try {
            System.out.println(HttpClientUtil.sendGetRequest("http://baidu.com", null));
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
        
        /**
         * @param connectTimeout the connectTimeout to set
         */
        @Value("${httpclient.connectTimeout:6000}")
        public  void setConnectTimeout(int connectTimeout) {
            HttpClientUtil.connectTimeout = connectTimeout;
        }
        /**
         * @param socketTimeout the socketTimeout to set
         */
        @Value("${httpclient.socketTimeout:60000}")
        public  void setSocketTimeout(int socketTimeout) {
            HttpClientUtil.socketTimeout = socketTimeout;
        }
        /**
         * @param connectionRequestTimeout the connectionRequestTimeout to set
         */
        @Value("${httpclient.connectionRequestTimeout:6000}")
        public  void setConnectionRequestTimeout(int connectionRequestTimeout) {
            HttpClientUtil.connectionRequestTimeout = connectionRequestTimeout;
        }
        /**
         * 发送HTTP_GET请求
         * 
         * @see 该方法会自动关闭连接,释放资源
         * @param requestURL
         *            请求地址(含参数)
         * @param decodeCharset
         *            解码字符集,解析响应数据时用之,其为null时默认采用UTF-8解码
         * @return 远程主机响应正文
         * @throws IOException 
         * @throws ClientProtocolException 
         */
        public static String sendGetRequest(String reqURL, String decodeCharset) throws ClientProtocolException, IOException  {
            long responseLength = 0; // 响应长度
            String responseContent = null; // 响应内容
            CloseableHttpClient httpClient = HttpClients.createDefault(); // 创建默认的httpClient实例
            HttpGet httpGet = new HttpGet(reqURL); // 创建org.apache.http.client.methods.HttpGet
            //设置超时
            setTimeout(httpGet);
            httpGet.setHeader(new BasicHeader("Content-Type", "application/x-www-form-urlencoded; charset=utf-8")); //解决get请求响应返回中文乱码问题
            try {
                HttpResponse response = httpClient.execute(httpGet); // 执行GET请求
                HttpEntity entity = response.getEntity(); // 获取响应实体
                if (null != entity) {
                    responseLength = entity.getContentLength();
                    responseContent = EntityUtils.toString(entity, decodeCharset == null ? "UTF-8" : decodeCharset);
                    EntityUtils.consume(entity); // Consume response content
                }
                System.out.println("请求地址: " + httpGet.getURI());
                System.out.println("响应状态: " + response.getStatusLine());
                System.out.println("响应长度: " + responseLength);
                System.out.println("响应内容: " + responseContent);
            } finally {
                httpClient.close();
            }
            return responseContent;
        }
        /**
         * ConnectTimeout 连接建立时间,三次握手完成时间
         * SocketTimeout 数据传输过程中数据包之间间隔的最大时间
         * ConnectionRequestTimeout httpclient使用连接池来管理连接,这个时间就是从连接池获取连接的超时时间
         * @param base
         */
    
        private static void setTimeout(HttpRequestBase base){
            RequestConfig requestConfig = RequestConfig.custom()    
                    .setConnectTimeout(connectTimeout).setConnectionRequestTimeout(connectionRequestTimeout)    
                    .setSocketTimeout(socketTimeout).build(); 
            base.setConfig(requestConfig);
        }
        /**
         * 发送HTTP_POST请求
         * 
         * @see 该方法为<code>sendPostRequest(String,String,boolean,String,String)</code>的简化方法
         * @see 该方法在对请求数据的编码和响应数据的解码时,所采用的字符集均为UTF-8
         * @see 当<code>isEncoder=true</code>时,其会自动对<code>sendData</code>中的[中文][|][
         *      ]等特殊字符进行<code>URLEncoder.encode(string,"UTF-8")</code>
         * @param isEncoder
         *            用于指明请求数据是否需要UTF-8编码,true为需要
         * @throws IOException 
         * @throws ClientProtocolException 
         */
        public static String sendPostRequest(String reqURL, String sendData, boolean isEncoder) throws ClientProtocolException, IOException {
            return sendPostRequest(reqURL, sendData, isEncoder, null, null);
        }
    
        /**
         * 发送HTTP_POST请求
         * 
         * @see 该方法会自动关闭连接,释放资源
         * @see 当<code>isEncoder=true</code>时,其会自动对<code>sendData</code>中的[中文][|][
         *      ]等特殊字符进行<code>URLEncoder.encode(string,encodeCharset)</code>
         * @param reqURL
         *            请求地址
         * @param sendData
         *            请求参数,若有多个参数则应拼接成param11=value11&22=value22&33=value33的形式后,传入该参数中
         * @param isEncoder
         *            请求数据是否需要encodeCharset编码,true为需要
         * @param encodeCharset
         *            编码字符集,编码请求数据时用之,其为null时默认采用UTF-8解码
         * @param decodeCharset
         *            解码字符集,解析响应数据时用之,其为null时默认采用UTF-8解码
         * @return 远程主机响应正文
         * @throws IOException 
         * @throws ClientProtocolException 
         */
        public static String sendPostRequest(String reqURL, String sendData, boolean isEncoder, String encodeCharset,
                String decodeCharset) throws ClientProtocolException, IOException  {
            String responseContent = null;
            CloseableHttpClient httpClient = HttpClients.createDefault();
    
            HttpPost httpPost = new HttpPost(reqURL);
            //设置超时
            setTimeout(httpPost);
            httpPost.setHeader(HTTP.CONTENT_TYPE, "application/x-www-form-urlencoded");
            try {
                if (isEncoder) {
                    List<NameValuePair> formParams = new ArrayList<NameValuePair>();
                    for (String str : sendData.split("&")) {
                        formParams.add(new BasicNameValuePair(str.substring(0, str.indexOf("=")),
                                str.substring(str.indexOf("=") + 1)));
                    }
                    httpPost.setEntity(new StringEntity(
                            URLEncodedUtils.format(formParams, encodeCharset == null ? "UTF-8" : encodeCharset)));
                } else {
                    httpPost.setEntity(new StringEntity(sendData));
                }
    
                HttpResponse response = httpClient.execute(httpPost);
                HttpEntity entity = response.getEntity();
                if (null != entity) {
                    responseContent = EntityUtils.toString(entity, decodeCharset == null ? "UTF-8" : decodeCharset);
                    EntityUtils.consume(entity);
                }
            } finally {
                httpClient.close();
            }
            return responseContent;
        }
    
        /**
         * 支持单个文件上传
         * @param reqURL 请求url
         * @param bytes 传递的二进制内容
         * @param fileparm 参数名称
         * @param decodeCharset 
         * @return
         * @throws IOException 
         * @throws ClientProtocolException 
         * @throws Exception
         */
        public static String sendPostByte(String reqURL, byte[] bytes, String fileparm,String filename,
                String decodeCharset) throws ClientProtocolException, IOException  {
            String responseContent = null;
            CloseableHttpClient httpClient = HttpClients.createDefault();
            HttpPost httpPost = new HttpPost(reqURL);
            //设置超时
            setTimeout(httpPost);
            MultipartEntityBuilder builder = MultipartEntityBuilder.create();
            builder.addBinaryBody(fileparm, bytes, ContentType.create("multipart/form-data","UTF-8"), filename);
            HttpEntity multipart = builder.build();
            httpPost.setEntity(multipart);
            try {
                HttpResponse response = httpClient.execute(httpPost);
                HttpEntity entity = response.getEntity();
                if (null != entity) {
                    responseContent = EntityUtils.toString(entity, decodeCharset == null ? "UTF-8" : decodeCharset);
                    EntityUtils.consume(entity);
                }
            } finally {
                httpClient.close();
            }
            return responseContent;
        }
        
        /**
         * 单个文件上传,file方式
         * @param reqURL
         * @param file
         * @param fileparm
         * @param decodeCharset
         * @return
         * @throws UnsupportedCharsetException 
         * @throws IOException 
         * @throws ClientProtocolException 
         * @throws Exception
         */
        public static String sendPostFile(String reqURL,File file, String fileparm,
                String decodeCharset) throws UnsupportedCharsetException, ClientProtocolException, IOException {
            String responseContent = null;
            CloseableHttpClient httpClient = HttpClients.createDefault();
            HttpPost httpPost = new HttpPost(reqURL);
            //设置超时
            setTimeout(httpPost);
            MultipartEntityBuilder builder = MultipartEntityBuilder.create();
            builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
            builder.setCharset(CharsetUtils.get("UTF-8")); //设置编码,解决上传文件名乱码问题
            builder.addBinaryBody(fileparm, new FileInputStream(file), ContentType.create("multipart/form-data","UTF-8"), file.getName());
            HttpEntity multipart = builder.build();
            httpPost.setEntity(multipart);
            try {
                HttpResponse response = httpClient.execute(httpPost);
                HttpEntity entity = response.getEntity();
                if (null != entity) {
                    responseContent = EntityUtils.toString(entity, decodeCharset == null ? "UTF-8" : decodeCharset);
                    EntityUtils.consume(entity);
                }
            } finally {
                httpClient.close();
            }
            return responseContent;
        }
        public static String sendPostMutipart(String reqURL, List<byte[]> bytes, List<String> fileparams,List<String> fileNames,List<String> paramNames,List<String> paramValues,
                String decodeCharset) throws ClientProtocolException, IOException  {
            String responseContent = null;
            CloseableHttpClient httpClient = HttpClients.createDefault();
            HttpPost httpPost = new HttpPost(reqURL);
            //设置超时
            setTimeout(httpPost);
            MultipartEntityBuilder builder = MultipartEntityBuilder.create();
            builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
            builder.setCharset(CharsetUtils.get("UTF-8"));
            for (int i = 0; i < bytes.size(); i++) {
                
                builder.addBinaryBody(fileparams.get(i), bytes.get(i), ContentType.create("multipart/form-data","UTF-8"), fileNames.get(i));
            }
            for (int i = 0; i < paramNames.size(); i++) {
                builder.addTextBody(paramNames.get(i), paramValues.get(i), ContentType.create("multipart/form-data","UTF-8"));
            }
            HttpEntity multipart = builder.build();
            httpPost.setEntity(multipart);
            try {
                HttpResponse response = httpClient.execute(httpPost);
                HttpEntity entity = response.getEntity();
                if (null != entity) {
                    responseContent = EntityUtils.toString(entity, decodeCharset == null ? "UTF-8" : decodeCharset);
                    EntityUtils.consume(entity);
                }
            } finally {
                httpClient.close();
            }
            return responseContent;
        }
    
        /**
         * 发送HTTP_POST请求
         * 
         * @see 该方法会自动关闭连接,释放资源
         * @see 该方法会自动对<code>params</code>中的[中文][|][
         *      ]等特殊字符进行<code>URLEncoder.encode(string,encodeCharset)</code>
         * @param reqURL
         *            请求地址
         * @param params
         *            请求参数
         * @param encodeCharset
         *            编码字符集,编码请求数据时用之,其为null时默认采用UTF-8解码
         * @param decodeCharset
         *            解码字符集,解析响应数据时用之,其为null时默认采用UTF-8解码
         * @return 远程主机响应正文
         * @throws IOException 
         * @throws ClientProtocolException 
         */
        public static String sendPostRequest(String reqURL, Map<String, String> params, String encodeCharset,
                String decodeCharset) throws ClientProtocolException, IOException  {
            String responseContent = null;
            CloseableHttpClient httpClient = HttpClients.createDefault();
            if(params==null){
                params=new HashMap<String, String>();
            }
            HttpPost httpPost = new HttpPost(reqURL);
            //设置超时
            //setTimeout(httpPost);
            List<NameValuePair> formParams = new ArrayList<NameValuePair>(); // 创建参数队列
            for (Map.Entry<String, String> entry : params.entrySet()) {
                formParams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
            }
            try {
                httpPost.setEntity(new UrlEncodedFormEntity(formParams, encodeCharset == null ? "UTF-8" : encodeCharset));
    
                HttpResponse response = httpClient.execute(httpPost);
                HttpEntity entity = response.getEntity();
                if (null != entity) {
                    responseContent = EntityUtils.toString(entity, decodeCharset == null ? "UTF-8" : decodeCharset);
                    EntityUtils.consume(entity);
                }
            } finally {
                httpClient.close();
            }
            return responseContent;
        }
    
        /**
         * 发送HTTPS_POST请求
         * @throws IOException 
         * @throws ClientProtocolException 
         * @throws NoSuchAlgorithmException 
         * @throws KeyManagementException 
         * 
         * @see 该方法为<code>sendPostSSLRequest(String,Map<String,String>,String,String)</code>方法的简化方法
         * @see 该方法在对请求数据的编码和响应数据的解码时,所采用的字符集均为UTF-8
         * @see 该方法会自动对<code>params</code>中的[中文][|][
         *      ]等特殊字符进行<code>URLEncoder.encode(string,"UTF-8")</code>
         */
        public static String sendPostSSLRequest(String reqURL, Map<String, String> params) throws KeyManagementException, NoSuchAlgorithmException, ClientProtocolException, IOException  {
            return sendPostSSLRequest(reqURL, params, null, null);
        }
    
        /**
         * 发送HTTPS_POST请求
         * 
         * @see 该方法会自动关闭连接,释放资源
         * @see 该方法会自动对<code>params</code>中的[中文][|][
         *      ]等特殊字符进行<code>URLEncoder.encode(string,encodeCharset)</code>
         * @param reqURL
         *            请求地址
         * @param params
         *            请求参数
         * @param encodeCharset
         *            编码字符集,编码请求数据时用之,其为null时默认采用UTF-8解码
         * @param decodeCharset
         *            解码字符集,解析响应数据时用之,其为null时默认采用UTF-8解码
         * @return 远程主机响应正文
         * @throws NoSuchAlgorithmException 
         * @throws KeyManagementException 
         * @throws IOException 
         * @throws ClientProtocolException 
         */
        public static String sendPostSSLRequest(String reqURL, Map<String, String> params, String encodeCharset,
                String decodeCharset) throws NoSuchAlgorithmException, KeyManagementException, ClientProtocolException, IOException  {
            String responseContent = "";
            CloseableHttpClient httpClient = HttpClients.createDefault();
            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));
    
                HttpPost httpPost = new HttpPost(reqURL);
                //设置超时
                setTimeout(httpPost);
                List<NameValuePair> formParams = new ArrayList<NameValuePair>();
                for (Map.Entry<String, String> entry : params.entrySet()) {
                    formParams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
                }
                httpPost.setEntity(new UrlEncodedFormEntity(formParams, encodeCharset == null ? "UTF-8" : encodeCharset));
    
                HttpResponse response = httpClient.execute(httpPost);
                HttpEntity entity = response.getEntity();
                if (null != entity) {
                    responseContent = EntityUtils.toString(entity, decodeCharset == null ? "UTF-8" : decodeCharset);
                    EntityUtils.consume(entity);
                }
            } finally {
                httpClient.close();
            }
            return responseContent;
        }
    
        /**
         * 发送HTTP_POST请求
         * 
         * @see 若发送的<code>params</code>中含有中文,记得按照双方约定的字符集将中文<code>URLEncoder.encode(string,encodeCharset)</code>
         * @see 本方法默认的连接超时时间为30秒,默认的读取超时时间为30秒
         * @param reqURL
         *            请求地址
         * @param params
         *            发送到远程主机的正文数据,其数据类型为<code>java.util.Map<String, String></code>
         * @return 远程主机响应正文`HTTP状态码,如<code>"SUCCESS`200"</code><br>
         *         若通信过程中发生异常则返回"Failed`HTTP状态码",如<code>"Failed`500"</code>
         * @throws IOException 
         * @throws Exception 
         */
        public static String sendPostRequestByJava(String reqURL, Map<String, String> params) throws IOException   {
            StringBuilder sendData = new StringBuilder();
            for (Map.Entry<String, String> entry : params.entrySet()) {
                sendData.append(entry.getKey()).append("=").append(entry.getValue()).append("&");
            }
            if (sendData.length() > 0) {
                sendData.setLength(sendData.length() - 1); // 删除最后一个&符号
            }
            return sendPostRequestByJava(reqURL, sendData.toString());
        }
    
        /**
         * 发送HTTP_POST请求
         * 
         * @see 若发送的<code>sendData</code>中含有中文,记得按照双方约定的字符集将中文<code>URLEncoder.encode(string,encodeCharset)</code>
         * @see 本方法默认的连接超时时间为30秒,默认的读取超时时间为30秒
         * @param reqURL
         *            请求地址
         * @param sendData
         *            发送到远程主机的正文数据
         * @return 远程主机响应正文`HTTP状态码,如<code>"SUCCESS`200"</code><br>
         *         若通信过程中发生异常则返回"Failed`HTTP状态码",如<code>"Failed`500"</code>
         * @throws IOException 
         */
        public static String sendPostRequestByJava(String reqURL, String sendData) throws IOException  {
            HttpURLConnection httpURLConnection = null;
            OutputStream out = null; //
            InputStream in = null; //
            int httpStatusCode = 0; // 远程主机响应的HTTP状态码
            try {
                URL sendUrl = new URL(reqURL);
                httpURLConnection = (HttpURLConnection) sendUrl.openConnection();
                httpURLConnection.setRequestMethod("POST");
                httpURLConnection.setDoOutput(true); // 指示应用程序要将数据写入URL连接,其值默认为false
                httpURLConnection.setUseCaches(false);
                httpURLConnection.setConnectTimeout(60000); // 60秒连接超时
                httpURLConnection.setReadTimeout(60000); // 60秒读取超时
                
                out = httpURLConnection.getOutputStream();
                out.write(sendData.toString().getBytes());
    
                // 清空缓冲区,发送数据
                out.flush();
    
                // 获取HTTP状态码
                httpStatusCode = httpURLConnection.getResponseCode();
    
                in = httpURLConnection.getInputStream();
                byte[] byteDatas = new byte[in.available()];
                in.read(byteDatas);
                return new String(byteDatas) + "`" + httpStatusCode;
            } finally {
                if (out != null) {
                    try {
                        out.close();
                    } catch (Exception e) {
                        logger.debug("关闭输出流时发生异常,堆栈信息如下", e);
                    }
                }
                if (in != null) {
                    try {
                        in.close();
                    } catch (Exception e) {
                        logger.debug("关闭输入流时发生异常,堆栈信息如下", e);
                    }
                }
                if (httpURLConnection != null) {
                    httpURLConnection.disconnect();
                    httpURLConnection = null;
                }
            }
        }
    
        /**
         * https posp请求,可以绕过证书校验
         * 
         * @param url
         * @param params
         * @return
         * @throws NoSuchAlgorithmException 
         * @throws KeyManagementException 
         * @throws IOException 
         * @throws ClientProtocolException 
         */
        public static final String sendHttpsRequestByPost(String url, Map<String, String> params) throws NoSuchAlgorithmException, KeyManagementException, ClientProtocolException, IOException {
            String responseContent = null;
            CloseableHttpClient httpClient = HttpClients.createDefault();
            // 创建TrustManager
            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;
                }
            };
            // 这个好像是HOST验证
            X509HostnameVerifier hostnameVerifier = new X509HostnameVerifier() {
                public boolean verify(String arg0, SSLSession arg1) {
                    return true;
                }
    
                public void verify(String arg0, SSLSocket arg1) throws IOException {
                }
    
                public void verify(String arg0, String[] arg1, String[] arg2) throws SSLException {
                }
    
                public void verify(String arg0, X509Certificate arg1) throws SSLException {
                }
            };
            try {
                // TLS1.0与SSL3.0基本上没有太大的差别,可粗略理解为TLS是SSL的继承者,但它们使用的是相同的SSLContext
                SSLContext ctx = SSLContext.getInstance("TLS");
                // 使用TrustManager来初始化该上下文,TrustManager只是被SSL的Socket所使用
                ctx.init(null, new TrustManager[] { xtm }, null);
                // 创建SSLSocketFactory
                SSLSocketFactory socketFactory = new SSLSocketFactory(ctx);
                socketFactory.setHostnameVerifier(hostnameVerifier);
                // 通过SchemeRegistry将SSLSocketFactory注册到我们的HttpClient上
                httpClient.getConnectionManager().getSchemeRegistry().register(new Scheme("https", socketFactory, 443));
                HttpPost httpPost = new HttpPost(url);
                //设置超时
                setTimeout(httpPost);
                List<NameValuePair> formParams = new ArrayList<NameValuePair>(); // 构建POST请求的表单参数
                for (Map.Entry<String, String> entry : params.entrySet()) {
                    formParams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
                }
                httpPost.setEntity(new UrlEncodedFormEntity(formParams, "UTF-8"));
                HttpResponse response = httpClient.execute(httpPost);
                HttpEntity entity = response.getEntity(); // 获取响应实体
                if (entity != null) {
                    responseContent = EntityUtils.toString(entity, "UTF-8");
                }
            } finally {
                // 关闭连接,释放资源
                try {
                    httpClient.close();
                } catch (IOException e) {
                    logger.error(e.getMessage());
                }
            }
            return responseContent;
        }
    
        /**
         * 发送HTTP_POST请求,json格式数据
         * 
         * @param url
         * @param body
         * @return
         * @throws IOException 
         * @throws ClientProtocolException 
         * @throws Exception
         */
        public static String sendPostByJson(String url, String body) throws ClientProtocolException, IOException  {
            CloseableHttpClient httpclient = HttpClients.custom().build();
            HttpPost post = null;
            String resData = null;
            CloseableHttpResponse result = null;
            try {
                post = new HttpPost(url);
                //设置超时
                setTimeout(post);
                HttpEntity entity2 = new StringEntity(body, Consts.UTF_8);
                post.setConfig(RequestConfig.custom().setConnectTimeout(connectTimeout).setSocketTimeout(socketTimeout).build());
                post.setHeader("Content-Type", "application/json");
                post.setEntity(entity2);
                result = httpclient.execute(post);
                if (HttpStatus.SC_OK == result.getStatusLine().getStatusCode()) {
                    resData = EntityUtils.toString(result.getEntity());
                }
            } finally {
                if (result != null) {
                    result.close();
                }
                if (post != null) {
                    post.releaseConnection();
                }
                httpclient.close();
            }
            return resData;
        }
    
    }
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  • 原文地址:https://www.cnblogs.com/ncy1/p/10041816.html
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