微信接口完善

stdiet-custom/src/main/java/com/stdiet/custom/service/ISysWxService.java

@@ -0,0 +1,13 @@
+package com.stdiet.custom.service;
+
+public interface ISysWxService {
+    /**
+     * 微信token验证
+     *
+     * @param signature
+     * @param timestamp
+     * @param nonce
+     * @return
+     */
+    public boolean wxCheckAuth(String signature, String timestamp, String nonce);
+}

stdiet-custom/src/main/java/com/stdiet/custom/service/impl/SysWxServiceImpl.java

@@ -0,0 +1,16 @@
+package com.stdiet.custom.service.impl;
+
+import com.stdiet.custom.service.ISysWxService;
+import com.stdiet.custom.utils.WxTokenUtils;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+@Service
+@Transactional
+public class SysWxServiceImpl implements ISysWxService {
+
+    @Override
+    public boolean wxCheckAuth(String signature, String timestamp, String nonce) {
+        return WxTokenUtils.checkSignature(signature, timestamp, nonce);
+    }
+}

stdiet-custom/src/main/java/com/stdiet/custom/utils/WxTokenUtils.java

@@ -0,0 +1,84 @@
+package com.stdiet.custom.utils;
+
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+
+public class WxTokenUtils {
+
+    // 与接口配置信息中的Token要一致
+    private static String token = "shengtangdiet";
+
+    /**
+     * 验证签名
+     *
+     * @param signature
+     * @param timestamp
+     * @param nonce
+     * @return
+     */
+    public static boolean checkSignature(String signature, String timestamp, String nonce) {
+        String[] arr = new String[]{token, timestamp, nonce};
+        // 将token、timestamp、nonce三个参数进行字典序排序
+        // Arrays.sort(arr);
+        sort(arr);
+        StringBuilder content = new StringBuilder();
+        for (int i = 0; i < arr.length; i++) {
+            content.append(arr[i]);
+        }
+        MessageDigest md = null;
+        String tmpStr = null;
+
+        try {
+            md = MessageDigest.getInstance("SHA-1");
+            // 将三个参数字符串拼接成一个字符串进行sha1加密
+            byte[] digest = md.digest(content.toString().getBytes());
+            tmpStr = byteToStr(digest);
+        } catch (NoSuchAlgorithmException e) {
+            e.printStackTrace();
+        }
+        content = null;
+        // 将sha1加密后的字符串可与signature对比，标识该请求来源于微信
+        return tmpStr != null ? tmpStr.equals(signature.toUpperCase()) : false;
+    }
+
+    /**
+     * 将字节数组转换为十六进制字符串
+     *
+     * @param byteArray
+     * @return
+     */
+    private static String byteToStr(byte[] byteArray) {
+        String strDigest = "";
+        for (int i = 0; i < byteArray.length; i++) {
+            strDigest += byteToHexStr(byteArray[i]);
+        }
+        return strDigest;
+    }
+
+    /**
+     * 将字节转换为十六进制字符串
+     *
+     * @param mByte
+     * @return
+     */
+    private static String byteToHexStr(byte mByte) {
+        char[] Digit = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
+        char[] tempArr = new char[2];
+        tempArr[0] = Digit[(mByte >>> 4) & 0X0F];
+        tempArr[1] = Digit[mByte & 0X0F];
+        String s = new String(tempArr);
+        return s;
+    }
+
+    public static void sort(String a[]) {
+        for (int i = 0; i < a.length - 1; i++) {
+            for (int j = i + 1; j < a.length; j++) {
+                if (a[j].compareTo(a[i]) < 0) {
+                    String temp = a[i];
+                    a[i] = a[j];
+                    a[j] = temp;
+                }
+            }
+        }
+    }
+}