open-JSD-8075/src/main/java/com/fr/plugin/HttpUtils.java

package com.fr.plugin;

import com.fr.base.FRContext;
import com.fr.base.ServerConfig;
import com.fr.base.TemplateUtils;
import com.fr.log.FineLoggerFactory;
import com.fr.stable.StringUtils;
import com.fr.third.org.apache.commons.io.IOUtils;

import javax.servlet.http.HttpServletRequest;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;
import java.util.Base64;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;

/**
 * http请求工具类
 *
 * @author fr.open
 */
public class HttpUtils {

    /**
     * 返回当前系统的回调地址
     *
     * @return
     */
    public static String getCallBackUrl(HttpServletRequest req) {
        StringBuilder url = new StringBuilder();
        try {
            url.append(req.getScheme());
            url.append("://");
            url.append(req.getServerName());
            if (req.getServerPort() != 80) {
                url.append(":");
                url.append(req.getServerPort());
            }
            url.append(TemplateUtils.render("${fineServletURL}"));
            url.append("/url/authorizationCallback");
        } catch (Exception e) {
            FineLoggerFactory.getLogger().error(e.getMessage(), e);
        }
        return url.toString();
    }

    /**
     * 返回当前系统的根路径
     *
     * @return
     */
    public static String getDefaultUrl(HttpServletRequest req) {
        StringBuilder url = new StringBuilder();
        try {
            url.append(req.getScheme());
            url.append("://");
            url.append(req.getServerName());
            if (req.getServerPort() != 80) {
                url.append(":");
                url.append(req.getServerPort());
            }
            url.append(TemplateUtils.render("${fineServletURL}"));
        } catch (Exception e) {
            FineLoggerFactory.getLogger().error(e.getMessage(), e);
        }
        return url.toString();
    }

    /**
     * get请求方式
     *
     * @param path
     * @return
     */
    public static String httpGet(String path,String token) {
        StringBuffer buffer = new StringBuffer();
        try {
            URL url = new URL(path);
            //打开和url之间的连接
            HttpURLConnection conn = (HttpURLConnection) url.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("token", token);
            conn.setRequestMethod("GET");
            conn.connect();
            //构造一个字符流缓存
            BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String line;
            while ((line = reader.readLine()) != null) {
                buffer.append(new String(line.getBytes(), "UTF-8"));
            }
            //关闭流
            reader.close();
            conn.disconnect();
        } catch (Exception e) {
            FineLoggerFactory.getLogger().error(e.getMessage(), e);
        }
        return buffer.toString();
    }

    /**
     * post请求方法
     *
     * @param path
     * @param param
     */
    public static String httpPost(String path, Map<String, Object> param) {
        String var3 = getParam(param, ServerConfig.getInstance().getServerCharset());
        PrintWriter var4 = null;
        BufferedReader var5 = null;
        String var6 = "";
        HttpURLConnection var8=null;
        try {
            URL var7 = new URL(path);
              var8 = (HttpURLConnection) var7.openConnection();
            var8.setRequestProperty("accept", "*/*");
            var8.setRequestProperty("connection", "Keep-Alive");
            var8.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            var8.setRequestProperty("Accept-Charset", "UTF-8");
            var8.setRequestMethod("POST");
            var8.setDoOutput(true);
            var8.setDoInput(true);
            var4 = new PrintWriter(var8.getOutputStream());
            var4.print(var3);
            var4.flush();

            String var9;
            for (var5 = new BufferedReader(new InputStreamReader(var8.getInputStream(), "UTF-8")); (var9 = var5.readLine()) != null; var6 = var6 + var9) {
                ;
            }
        } catch (Exception var18) {
            if (var8 != null) {
                InputStream errorStream = var8.getErrorStream();
                if (errorStream != null) {
                    try {
                        String s = IOUtils.toString(errorStream, StandardCharsets.UTF_8);
                        FineLoggerFactory.getLogger().error("resp logger :{}", s);
                        return s;
                    } catch (IOException ioException) {
                        ioException.printStackTrace();
                    }
                }
            }
        } finally {
            try {
                if (var4 != null) {
                    var4.close();
                }

                if (var5 != null) {
                    var5.close();
                }
            } catch (Exception var17) {
                ;
            }

        }

        return var6;
    }

    /**
     * 发送json 模式的请求
     *
     * @param url
     * @param param
     * @return
     */
    public static String sendJsonPost(String url, String param) {
        FRContext.getLogger().info("请将后面的内容发送给开发者：" + new String(Base64.getUrlEncoder().encode(param.getBytes())));
        StringBuilder sb = new StringBuilder();
        PrintWriter out = null;
        BufferedReader in = null;
        HttpURLConnection conn = null;
        try {
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            conn = (HttpURLConnection) realUrl.openConnection();
            FineLoggerFactory.getLogger().info("打开链接：" + conn.toString());
            // 设置通用的请求属性
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestMethod("POST");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("Content-Type", "application/json; charset=utf-8");
            conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            // 获取URLConnection对象对应的输出流，设置utf-8编码
            out = new PrintWriter(new OutputStreamWriter(conn.getOutputStream(), StandardCharsets.UTF_8));
            // 发送请求参数
            if (StringUtils.isNotBlank(param)) {
                out.print(param);
            }
            FineLoggerFactory.getLogger().info("发送参数[{}]：" + out.toString(), param);
            // 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()));
            String line;
            sb = new StringBuilder();
            while ((line = in.readLine()) != null) {
                sb.append(line);
            }
            FineLoggerFactory.getLogger().info("接口返回值：" + sb.toString());
        } catch (Exception e) {
            if (conn != null) {
                InputStream errorStream = ( conn).getErrorStream();
                in = new BufferedReader(new InputStreamReader(errorStream));
                sb = new StringBuilder();
                String line;
                try {
                    while ((line = in.readLine()) != null) {
                        sb.append(line);
                    }
                } catch (Exception ee) {

                }
                System.out.println("错误响应：=======>>" + sb);
            }
            System.out.println("发送 POST 请求出现异常！" + e);
            e.printStackTrace();
        }
        // 使用finally块来关闭输出流、输入流
        finally {
            try {
                if (null != in) {
                    in.close();
                }
                if (out != null) {
                    out.close();
                }
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
        return sb.toString();
    }

    private static String getParam(Map<String, Object> var0, String enc) {
        String var1 = "";
        Set var2 = var0.keySet();
        Iterator var3 = var2.iterator();

        while (var3.hasNext()) {
            String var4 = (String) var3.next();
            String var5 = var0.get(var4) + "";

            try {
                var1 = var1 + (var1.length() == 0 ? "" : "&") + URLEncoder.encode(var4, enc) + "=" + URLEncoder.encode(var5, enc);
            } catch (Exception var7) {
                ;
            }
        }

        return var1;
    }

}