com.voa.weixin.utils.WeixinUtils.java Source code

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Here is the source code for com.voa.weixin.utils.WeixinUtils.java

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/**
 This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.voa.weixin.utils;

import java.io.File;
import java.io.InputStream;
import java.util.Arrays;

import org.apache.commons.codec.digest.DigestUtils;
import org.dom4j.Document;
import org.dom4j.io.SAXReader;

import com.voa.weixin.Carp;

/**
 * 
 * @author zhaiyuxin
 *
 */
public class WeixinUtils {

    /**
     * ??
     * @param signature
     * @param timestamp
     * @param nonce
     * @param echostr
     * @param token
     * @return
     */
    public static boolean checkAuthentication(String signature, String timestamp, String nonce, String echostr,
            String token) {
        //String result = "";
        boolean result = false;
        // ??
        String[] ArrTmp = { token, timestamp, nonce };
        // ????
        Arrays.sort(ArrTmp);
        StringBuffer sb = new StringBuffer();

        for (int i = 0; i < ArrTmp.length; i++) {
            sb.append(ArrTmp[i]);
        }
        // ??SHA-1
        String pwd = "";
        try {
            pwd = DigestUtils.sha1Hex(sb.toString());

        } catch (Exception e) {
            e.printStackTrace();
        }
        result = pwd.equals(signature);
        return result;
    }

    public static Document getDocumentResource(String sourceName) throws Exception {
        String repertoryPath = Carp.ROOTPATH + sourceName;

        SAXReader reader = new SAXReader();
        Document doc = null;

        File repertoryFile = new File(repertoryPath);
        if (repertoryFile.exists() && repertoryFile.isFile()) {
            doc = reader.read(repertoryFile);
        } else {
            InputStream in = Carp.class.getResourceAsStream("/" + sourceName);
            doc = reader.read(in);
            in.close();
        }

        return doc;
    }

}