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郑永安

2023-06-19 2fcd97552d16718cc7997629fd637a73a5a4483f

 src/main/java/com/gk/firework/Domain/Utils/WebUtils.java

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package com.gk.firework.Domain.Utils;

import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.method.HandlerMethod;

import javax.net.ssl.*;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.SecureRandom;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.Iterator;
import java.util.Map;

/**
 * Miscellaneous utilities for web applications.
 * @author L.cm
 */
public class WebUtils extends org.springframework.web.util.WebUtils {
   /**
    * 判断是否ajax请求
    * spring ajax 返回含有 ResponseBody 或者 RestController注解
    * @param handlerMethod HandlerMethod
    * @return 是否ajax请求
    */

    private static final String DEFAULT_CHARSET = "UTF-8";
    private static boolean ignoreSSLCheck = true;
    private static boolean ignoreHostCheck = true;

    public static boolean isAjax(HandlerMethod handlerMethod) {
      ResponseBody responseBody = handlerMethod.getMethodAnnotation(ResponseBody.class);
      if (null != responseBody) {
         return true;
      }
      RestController restAnnotation = handlerMethod.getBean().getClass().getAnnotation(RestController.class);
      if (null != restAnnotation) {
         return true;
      }
      return false;
   }

    private static HttpURLConnection getConnection(URL url, String method, String ctype, Map<String, String> headerMap) throws IOException {
        Object conn = (HttpURLConnection)url.openConnection();
        if(conn instanceof HttpsURLConnection) {
            HttpsURLConnection i$ = (HttpsURLConnection)conn;
            if(ignoreSSLCheck) {
                try {
                    SSLContext entry = SSLContext.getInstance("TLS");
                    entry.init((KeyManager[])null, new TrustManager[]{new TrustAllTrustManager()}, new SecureRandom());
                    i$.setSSLSocketFactory(entry.getSocketFactory());
                    i$.setHostnameVerifier(new HostnameVerifier() {
                        public boolean verify(String hostname, SSLSession session) {
                            return true;
                        }
                    });
                } catch (Exception var7) {
                    throw new IOException(var7.toString());
                }
            } else if(ignoreHostCheck) {
                i$.setHostnameVerifier(new HostnameVerifier() {
                    public boolean verify(String hostname, SSLSession session) {
                        return true;
                    }
                });
            }

            conn = i$;
        }

        ((HttpURLConnection)conn).setRequestMethod(method);
        ((HttpURLConnection)conn).setDoInput(true);
        ((HttpURLConnection)conn).setDoOutput(true);
        if(headerMap != null && headerMap.get("TOP_HTTP_DNS_HOST") != null) {
            ((HttpURLConnection)conn).setRequestProperty("Host", (String)headerMap.get("TOP_HTTP_DNS_HOST"));
        } else {
            ((HttpURLConnection)conn).setRequestProperty("Host", url.getHost());
        }

        ((HttpURLConnection)conn).setRequestProperty("Accept", "text/xml,text/javascript");
        ((HttpURLConnection)conn).setRequestProperty("Content-Type", ctype);
        if(headerMap != null) {
            Iterator i$1 = headerMap.entrySet().iterator();

            while(i$1.hasNext()) {
                Map.Entry entry1 = (Map.Entry)i$1.next();
                if(!"TOP_HTTP_DNS_HOST".equals(entry1.getKey())) {
                    ((HttpURLConnection)conn).setRequestProperty((String)entry1.getKey(), (String)entry1.getValue());
                }
            }
        }

        return (HttpURLConnection)conn;
    }

    public static String getStreamAsString(InputStream stream, String charset) throws IOException {
        try {
            InputStreamReader reader = new InputStreamReader(stream, charset);
            StringBuilder response = new StringBuilder();
            char[] buff = new char[1024];
            boolean read = false;

            int read1;
            while((read1 = reader.read(buff)) > 0) {
                response.append(buff, 0, read1);
            }

            String var6 = response.toString();
            return var6;
        } finally {
            if(stream != null) {
                stream.close();
            }

        }
    }

    public static class TrustAllTrustManager implements X509TrustManager {
        public TrustAllTrustManager() {
        }

        public X509Certificate[] getAcceptedIssuers() {
            return null;
        }

        public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
        }

        public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
        }
    }

    public static String ytoSendPost(String url, Map<String, String> params)
    {
        OutputStreamWriter out = null;
        BufferedReader in = null;
        StringBuilder result = new StringBuilder();
        try {
            URL realUrl = new URL(url);
            HttpURLConnection conn =(HttpURLConnection) realUrl.openConnection();
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            // POST方法
            conn.setRequestMethod("POST");
            // 设置通用的请求属性
            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("Content-Type", "application/x-www-form-urlencoded");
            conn.connect();
            // 获取URLConnection对象对应的输出流
            out = new OutputStreamWriter(conn.getOutputStream(), "UTF-8");
            // 发送请求参数
            if (params != null) {
                StringBuilder param = new StringBuilder();
                for (Map.Entry<String, String> entry : params.entrySet()) {
                    if(param.length()>0){
                        param.append("&");
                    }
                    param.append(entry.getKey());
                    param.append("=");
                    param.append(entry.getValue());
                }
                out.write(param.toString());
            }
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));
            String line;
            while ((line = in.readLine()) != null) {
                result.append(line);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        //使用finally块来关闭输出流、输入流
        finally{
            try{
                if(out!=null){
                    out.close();
                }
                if(in!=null){
                    in.close();
                }
            }
            catch(IOException ex){
                ex.printStackTrace();
            }
        }
        return result.toString();
    }

}