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					package com.epmet.controller; | 
				
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					import org.slf4j.Logger; | 
				
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					import org.slf4j.LoggerFactory; | 
				
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					import org.springframework.web.bind.annotation.RequestMapping; | 
				
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					import org.springframework.web.bind.annotation.RequestMethod; | 
				
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					import org.springframework.web.bind.annotation.ResponseBody; | 
				
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					import org.springframework.web.bind.annotation.RestController; | 
				
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					import javax.servlet.http.HttpServletRequest; | 
				
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					import javax.servlet.http.HttpServletResponse; | 
				
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					import java.io.PrintWriter; | 
				
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					import java.security.MessageDigest; | 
				
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					import java.security.NoSuchAlgorithmException; | 
				
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					import java.util.Arrays; | 
				
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					import java.util.Enumeration; | 
				
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					/** | 
				
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					 * desc:微信配置测试 | 
				
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					 * | 
				
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					 * @author generator generator@elink-cn.com | 
				
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					 * @since v1.0.0 2020-03-08 | 
				
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					 */ | 
				
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					@RestController | 
				
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					@RequestMapping("wechat") | 
				
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					public class WxController { | 
				
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					    private static Logger log = LoggerFactory.getLogger(WxController.class); | 
				
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					    @RequestMapping("check") | 
				
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					    public void get(HttpServletRequest request, HttpServletResponse response) throws Exception { | 
				
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					        System.out.println("========WechatController========= "); | 
				
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					        Enumeration pNames = request.getParameterNames(); | 
				
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					        while (pNames.hasMoreElements()) { | 
				
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					            String name = (String) pNames.nextElement(); | 
				
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					            String value = request.getParameter(name); | 
				
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					            // out.print(name + "=" + value);
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					            String log = "name =" + name + "     value =" + value; | 
				
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					        } | 
				
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					        String signature = request.getParameter("signature");/// 微信加密签名
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					        String timestamp = request.getParameter("timestamp");/// 时间戳
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					        String nonce = request.getParameter("nonce"); /// 随机数
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					        String echostr = request.getParameter("echostr"); // 随机字符串
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					        response.reset(); | 
				
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					        PrintWriter out = response.getWriter(); | 
				
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					//        if (this.checkSignature(signature, timestamp, nonce)) {
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					//            out.print(echostr);
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					//        }
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					        out.close(); | 
				
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					        out = null; | 
				
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					    } | 
				
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					    /** | 
				
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					     * 校验签名 | 
				
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					     */ | 
				
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					    public static boolean checkSignature(String signature, String timestamp, String nonce) { | 
				
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					        System.out.println("signature:" + signature + "timestamp:" + timestamp + "nonc:" + nonce); | 
				
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					        String WECHAT_TOKEN = "1jkoyyih83nj8"; | 
				
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					        String[] arr = new String[]{WECHAT_TOKEN, timestamp, nonce}; | 
				
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					        // 将token、timestamp、nonce三个参数进行字典序排序
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					        Arrays.sort(arr); | 
				
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					        StringBuilder content = new StringBuilder(); | 
				
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					        for (int i = 0; i < arr.length; i++) { | 
				
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					            content.append(arr[i]); | 
				
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					        } | 
				
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					        MessageDigest md = null; | 
				
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					        String tmpStr = null; | 
				
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					        try { | 
				
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					            md = MessageDigest.getInstance("SHA-1"); | 
				
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					            // 将三个参数字符串拼接成一个字符串进行sha1加密
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					            byte[] digest = md.digest(content.toString().getBytes()); | 
				
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					            tmpStr = byteToStr(digest); | 
				
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					        } catch (NoSuchAlgorithmException e) { | 
				
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					            e.printStackTrace(); | 
				
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					        } | 
				
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					        content = null; | 
				
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					        // 将sha1加密后的字符串可与signature对比,标识该请求来源于微信
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					        System.out.println(tmpStr.equals(signature.toUpperCase())); | 
				
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					        return tmpStr != null ? tmpStr.equals(signature.toUpperCase()) : false; | 
				
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					    } | 
				
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					    /** | 
				
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					     * 将字节数组转换为十六进制字符串 | 
				
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					     * | 
				
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					     * @param byteArray | 
				
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					     * @return | 
				
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					     */ | 
				
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					    private static String byteToStr(byte[] byteArray) { | 
				
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					        String strDigest = ""; | 
				
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					        for (int i = 0; i < byteArray.length; i++) { | 
				
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					            strDigest += byteToHexStr(byteArray[i]); | 
				
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					        } | 
				
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					        return strDigest; | 
				
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					    } | 
				
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					    /** | 
				
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					     * 将字节转换为十六进制字符串 | 
				
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					     * | 
				
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					     * @param mByte | 
				
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					     * @return | 
				
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					     */ | 
				
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					    private static String byteToHexStr(byte mByte) { | 
				
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					        char[] Digit = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'}; | 
				
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					        char[] tempArr = new char[2]; | 
				
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					        tempArr[0] = Digit[(mByte >>> 4) & 0X0F]; | 
				
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					        tempArr[1] = Digit[mByte & 0X0F]; | 
				
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					        String s = new String(tempArr); | 
				
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					        return s; | 
				
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					    } | 
				
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					    /** | 
				
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					     * 打开开发者模式签名认证 | 
				
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					     * @param signature | 
				
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					     * @param timestamp | 
				
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					     * @param nonce | 
				
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					     * @param echostr | 
				
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					     * @return | 
				
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					     */ | 
				
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					    @ResponseBody | 
				
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					    @RequestMapping(value = "/service", method = RequestMethod.GET) | 
				
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					    public Object defaultView(String signature, String timestamp, String nonce, String echostr) { | 
				
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					        if (echostr == null || echostr.isEmpty()) { | 
				
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					            return nonce; | 
				
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					        } | 
				
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					        if (this.checkSignature(signature, timestamp, nonce)) { | 
				
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					            return echostr; | 
				
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					        } | 
				
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					        return nonce; | 
				
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					    } | 
				
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					} | 
				
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