HttpURLUtil.java

package com.server.utils.weixin;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.util.StringUtils;

import javax.servlet.http.HttpServletRequest;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.util.Iterator;
import java.util.Map;

/**
 * Created by dell on 2018/2/28.
 */
public class HttpURLUtil {
    private Logger logger = LoggerFactory.getLogger(getClass());
    private static final String GET = "GET";
    private static final String POST = "POST";
    private static String CHARSET = "UTF-8";
    private HttpURLUtil() {
    }
    private static HttpURLConnection getHttpConnection(String url, String method, Map<String, String> headers) throws IOException, NoSuchAlgorithmException, NoSuchProviderException, KeyManagementException {
        URL _url = new URL(url);
        HttpURLConnection conn = (HttpURLConnection)_url.openConnection();
        conn.setRequestMethod(method);
        conn.setDoOutput(true);
        conn.setDoInput(true);
        conn.setConnectTimeout(19000);
        conn.setReadTimeout(19000);
        conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        conn.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.146 Safari/537.36");
        if(headers != null && !headers.isEmpty()) {
            Iterator i$ = headers.entrySet().iterator();
            while(i$.hasNext()) {
                Map.Entry entry = (Map.Entry)i$.next();
                conn.setRequestProperty((String)entry.getKey(), (String)entry.getValue());
            }
        }
        return conn;
    }

    public static String get(String url, Map<String, String> queryParas, Map<String, String> headers) {
        HttpURLConnection conn = null;
        String e;
        try {
            conn = getHttpConnection(buildUrlWithQueryString(url, queryParas), HttpURLUtil.GET, headers);
            conn.connect();
            e = readResponseString(conn);
        } catch (Exception var8) {
            throw new RuntimeException(var8);
        } finally {
            if(conn != null) {
                conn.disconnect();
            }
        }

        return e;
    }

    public static String get(String url, Map<String, String> queryParas) {
        return get(url, queryParas, (Map)null);
    }

    public static String get(String url) {
        return get(url, (Map)null, (Map)null);
    }

    public static String post(String url, Map<String, String> queryParas, String data, Map<String, String> headers) {
        HttpURLConnection conn = null;

        String var6;
        try {
            conn = getHttpConnection(buildUrlWithQueryString(url, queryParas), HttpURLUtil.POST, headers);
            conn.connect();
            OutputStream e = conn.getOutputStream();
            e.write(data != null?data.getBytes(CHARSET):null);
            e.flush();
            e.close();
            var6 = readResponseString(conn);
        } catch (Exception var10) {
            throw new RuntimeException(var10);
        } finally {
            if(conn != null) {
                conn.disconnect();
            }
        }
        return var6;
    }

    public static String post(String url, Map<String, String> queryParas, String data) {
        return post(url, queryParas, data, (Map)null);
    }

    public static String post(String url, String data, Map<String, String> headers) {
        return post(url, (Map)null, data, headers);
    }

    public static String post(String url, String data) {
        return post(url, (Map)null, data, (Map)null);
    }

    private static String readResponseString(HttpURLConnection conn) {
        StringBuilder sb = new StringBuilder();
        InputStream inputStream = null;

        try {
            inputStream = conn.getInputStream();
            BufferedReader e = new BufferedReader(new InputStreamReader(inputStream, CHARSET));
            String line = null;

            while((line = e.readLine()) != null) {
                sb.append(line).append("\n");
            }

            String var5 = sb.toString();
            return var5;
        } catch (Exception var14) {
            throw new RuntimeException(var14);
        } finally {
            if(inputStream != null) {
                try {
                    inputStream.close();
                } catch (IOException var13) {
                   var13.printStackTrace();
                }
            }

        }
    }

    private static String buildUrlWithQueryString(String url, Map<String, String> queryParas) {
        if(queryParas != null && !queryParas.isEmpty()) {
            StringBuilder sb = new StringBuilder(url);
            boolean isFirst;
            if(!url.contains("?")) {
                isFirst = true;
                sb.append("?");
            } else {
                isFirst = false;
            }

            String key;
            String value;
            for(Iterator i$ = queryParas.entrySet().iterator(); i$.hasNext(); sb.append(key).append("=").append(value)) {
                Map.Entry entry = (Map.Entry)i$.next();
                if(isFirst) {
                    isFirst = false;
                } else {
                    sb.append("&");
                }

                key = (String)entry.getKey();
                value = (String)entry.getValue();
                if(StringUtils.hasText(value)) {
                    try {
                        value = URLEncoder.encode(value, CHARSET);
                    } catch (UnsupportedEncodingException var9) {
                        throw new RuntimeException(var9);
                    }
                }
            }

            return sb.toString();
        } else {
            return url;
        }
    }

    public static String readData(HttpServletRequest request) {
        BufferedReader br = null;

        try {
            StringBuilder e = new StringBuilder();

            String line;
            for(br = request.getReader(); (line = br.readLine()) != null; e.append(line)) {
                if(e.length() > 0) {
                    e.append("\n");
                }
            }

            line = e.toString();
            return line;
        } catch (IOException var12) {
            throw new RuntimeException(var12);
        } finally {
            if(br != null) {
                try {
                    br.close();
                } catch (IOException var11) {
                    var11.printStackTrace();
                }
            }

        }
    }


}