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  • http 工具类 httputils发送json请求

    1.老用这个http工具,一直没有整理一下,今天写完之后,正好发出来,方便日后使用

    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    import java.io.PrintWriter;
    import java.net.ConnectException;
    import java.net.SocketTimeoutException;
    import java.net.URL;
    import java.net.URLConnection;
    import java.nio.charset.StandardCharsets;
    import java.security.cert.X509Certificate;
    import javax.net.ssl.HostnameVerifier;
    import javax.net.ssl.HttpsURLConnection;
    import javax.net.ssl.SSLContext;
    import javax.net.ssl.SSLSession;
    import javax.net.ssl.TrustManager;
    import javax.net.ssl.X509TrustManager;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import com.bjwx.common.constant.Constants;
    import com.bjwx.common.utils.StringUtils;
    
    /**
     * 通用http发送方法
     *
     * @author ruoyi
     */
    public class HttpUtils
    {
        private static final Logger log = LoggerFactory.getLogger(HttpUtils.class);
    
        /**
         * 向指定 URL 发送GET方法的请求
         *
         * @param url 发送请求的 URL
         * @return 所代表远程资源的响应结果
         */
        public static String sendGet(String url)
        {
            return sendGet(url, StringUtils.EMPTY);
        }
    
        /**
         * 向指定 URL 发送GET方法的请求
         *
         * @param url 发送请求的 URL
         * @param param 请求参数,请求参数应该是 name1=value1&name2=value2 的形式。
         * @return 所代表远程资源的响应结果
         */
        public static String sendGet(String url, String param)
        {
            return sendGet(url, param, Constants.UTF8);
        }
    
        /**
         * 向指定 URL 发送GET方法的请求
         *
         * @param url 发送请求的 URL
         * @param param 请求参数,请求参数应该是 name1=value1&name2=value2 的形式。
         * @param contentType 编码类型
         * @return 所代表远程资源的响应结果
         */
        public static String sendGetJSon(String url, String param, String contentType)
        {
            StringBuilder result = new StringBuilder();
            BufferedReader in = null;
            try
            {
                String urlNameString = StringUtils.isNotBlank(param) ? url + "?" + param : url;
                log.info("sendGet - {}", urlNameString);
                URL realUrl = new URL(urlNameString);
                URLConnection connection = realUrl.openConnection();
                connection.setRequestProperty("Content-Type", "application/json");
                connection.setRequestProperty("accept", "*/*");
                connection.setRequestProperty("connection", "Keep-Alive");
                connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
                connection.connect();
                in = new BufferedReader(new InputStreamReader(connection.getInputStream(), contentType));
                String line;
                while ((line = in.readLine()) != null)
                {
                    result.append(line);
                }
                log.info("recv - {}", result);
            }
            catch (ConnectException e)
            {
                log.error("调用HttpUtils.sendGet ConnectException, url=" + url + ",param=" + param, e);
            }
            catch (SocketTimeoutException e)
            {
                log.error("调用HttpUtils.sendGet SocketTimeoutException, url=" + url + ",param=" + param, e);
            }
            catch (IOException e)
            {
                log.error("调用HttpUtils.sendGet IOException, url=" + url + ",param=" + param, e);
            }
            catch (Exception e)
            {
                log.error("调用HttpsUtil.sendGet Exception, url=" + url + ",param=" + param, e);
            }
            finally
            {
                try
                {
                    if (in != null)
                    {
                        in.close();
                    }
                }
                catch (Exception ex)
                {
                    log.error("调用in.close Exception, url=" + url + ",param=" + param, ex);
                }
            }
            return result.toString();
        }
    
    
    
        /**
         * 向指定 URL 发送GET方法的请求
         *
         * @param url 发送请求的 URL
         * @param param 请求参数,请求参数应该是 name1=value1&name2=value2 的形式。
         * @param contentType 编码类型
         * @return 所代表远程资源的响应结果
         */
        public static String sendGet(String url, String param, String contentType)
        {
            StringBuilder result = new StringBuilder();
            BufferedReader in = null;
            try
            {
                String urlNameString = StringUtils.isNotBlank(param) ? url + "?" + param : url;
                log.info("sendGet - {}", urlNameString);
                URL realUrl = new URL(urlNameString);
                URLConnection connection = realUrl.openConnection();
                connection.setRequestProperty("accept", "*/*");
                connection.setRequestProperty("connection", "Keep-Alive");
                connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
                connection.connect();
                in = new BufferedReader(new InputStreamReader(connection.getInputStream(), contentType));
                String line;
                while ((line = in.readLine()) != null)
                {
                    result.append(line);
                }
                log.info("recv - {}", result);
            }
            catch (ConnectException e)
            {
                log.error("调用HttpUtils.sendGet ConnectException, url=" + url + ",param=" + param, e);
            }
            catch (SocketTimeoutException e)
            {
                log.error("调用HttpUtils.sendGet SocketTimeoutException, url=" + url + ",param=" + param, e);
            }
            catch (IOException e)
            {
                log.error("调用HttpUtils.sendGet IOException, url=" + url + ",param=" + param, e);
            }
            catch (Exception e)
            {
                log.error("调用HttpsUtil.sendGet Exception, url=" + url + ",param=" + param, e);
            }
            finally
            {
                try
                {
                    if (in != null)
                    {
                        in.close();
                    }
                }
                catch (Exception ex)
                {
                    log.error("调用in.close Exception, url=" + url + ",param=" + param, ex);
                }
            }
            return result.toString();
        }
    
        /**
         * 向指定 URL 发送POST方法的请求
         *
         * @param url 发送请求的 URL
         * @param param 请求参数,请求参数应该是 name1=value1&name2=value2 的形式。
         * @return 所代表远程资源的响应结果
         */
        public static String sendPost(String url, String param)
        {
            PrintWriter out = null;
            BufferedReader in = null;
            StringBuilder result = new StringBuilder();
            try
            {
                log.info("sendPost - {}", url);
                URL realUrl = new URL(url);
                URLConnection conn = realUrl.openConnection();
                conn.setRequestProperty("accept", "*/*");
                conn.setRequestProperty("connection", "Keep-Alive");
                conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
                conn.setRequestProperty("Accept-Charset", "utf-8");
                conn.setRequestProperty("contentType", "utf-8");
                conn.setDoOutput(true);
                conn.setDoInput(true);
                out = new PrintWriter(conn.getOutputStream());
                out.print(param);
                out.flush();
                in = new BufferedReader(new InputStreamReader(conn.getInputStream(), StandardCharsets.UTF_8));
                String line;
                while ((line = in.readLine()) != null)
                {
                    result.append(line);
                }
                log.info("recv - {}", result);
            }
            catch (ConnectException e)
            {
                log.error("调用HttpUtils.sendPost ConnectException, url=" + url + ",param=" + param, e);
            }
            catch (SocketTimeoutException e)
            {
                log.error("调用HttpUtils.sendPost SocketTimeoutException, url=" + url + ",param=" + param, e);
            }
            catch (IOException e)
            {
                log.error("调用HttpUtils.sendPost IOException, url=" + url + ",param=" + param, e);
            }
            catch (Exception e)
            {
                log.error("调用HttpsUtil.sendPost Exception, url=" + url + ",param=" + param, e);
            }
            finally
            {
                try
                {
                    if (out != null)
                    {
                        out.close();
                    }
                    if (in != null)
                    {
                        in.close();
                    }
                }
                catch (IOException ex)
                {
                    log.error("调用in.close Exception, url=" + url + ",param=" + param, ex);
                }
            }
            return result.toString();
        }
    
        public static String sendSSLPost(String url, String param)
        {
            StringBuilder result = new StringBuilder();
            String urlNameString = url + "?" + param;
            try
            {
                log.info("sendSSLPost - {}", urlNameString);
                SSLContext sc = SSLContext.getInstance("SSL");
                sc.init(null, new TrustManager[] { new TrustAnyTrustManager() }, new java.security.SecureRandom());
                URL console = new URL(urlNameString);
                HttpsURLConnection conn = (HttpsURLConnection) console.openConnection();
                conn.setRequestProperty("accept", "*/*");
                conn.setRequestProperty("connection", "Keep-Alive");
                conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
                conn.setRequestProperty("Accept-Charset", "utf-8");
                conn.setRequestProperty("contentType", "utf-8");
                conn.setDoOutput(true);
                conn.setDoInput(true);
    
                conn.setSSLSocketFactory(sc.getSocketFactory());
                conn.setHostnameVerifier(new TrustAnyHostnameVerifier());
                conn.connect();
                InputStream is = conn.getInputStream();
                BufferedReader br = new BufferedReader(new InputStreamReader(is));
                String ret = "";
                while ((ret = br.readLine()) != null)
                {
                    if (ret != null && !"".equals(ret.trim()))
                    {
                        result.append(new String(ret.getBytes(StandardCharsets.ISO_8859_1), StandardCharsets.UTF_8));
                    }
                }
                log.info("recv - {}", result);
                conn.disconnect();
                br.close();
            }
            catch (ConnectException e)
            {
                log.error("调用HttpUtils.sendSSLPost ConnectException, url=" + url + ",param=" + param, e);
            }
            catch (SocketTimeoutException e)
            {
                log.error("调用HttpUtils.sendSSLPost SocketTimeoutException, url=" + url + ",param=" + param, e);
            }
            catch (IOException e)
            {
                log.error("调用HttpUtils.sendSSLPost IOException, url=" + url + ",param=" + param, e);
            }
            catch (Exception e)
            {
                log.error("调用HttpsUtil.sendSSLPost Exception, url=" + url + ",param=" + param, e);
            }
            return result.toString();
        }
    
        private static class TrustAnyTrustManager implements X509TrustManager
        {
            @Override
            public void checkClientTrusted(X509Certificate[] chain, String authType)
            {
            }
    
            @Override
            public void checkServerTrusted(X509Certificate[] chain, String authType)
            {
            }
    
            @Override
            public X509Certificate[] getAcceptedIssuers()
            {
                return new X509Certificate[] {};
            }
        }
    
        private static class TrustAnyHostnameVerifier implements HostnameVerifier
        {
            @Override
            public boolean verify(String hostname, SSLSession session)
            {
                return true;
            }
        }
    }
    

     

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