增加企微验证

pom.xml

@@ -131,6 +131,22 @@
             <artifactId>xxl-job-core</artifactId>
         </dependency>
 
+        <!-- https://mvnrepository.com/artifact/commons-codec/commons-codec -->
+        <dependency>
+            <groupId>commons-codec</groupId>
+            <artifactId>commons-codec</artifactId>
+            <version>1.17.1</version>
+        </dependency>
+
+        <!--XML 解析包-->
+        <dependency>
+            <groupId>org.jdom</groupId>
+            <artifactId>jdom2</artifactId>
+            <version>2.0.6</version>
+        </dependency>
+
+
+
     </dependencies>
 
 </project>

we-com-server/src/main/java/com/tzld/piaoquan/wecom/common/constant/WeComServerConstant.java

@@ -0,0 +1,12 @@
+package com.tzld.piaoquan.wecom.common.constant;
+
+public interface WeComServerConstant {
+
+    String TOKEN = "Sk4rwob1vD9bjZDINuYVBU";
+
+    String EncodingAESKey = "i2DhQ6AjBGpacrSA8NNXIW1MWRzCAwowbrEd30GWEeR";
+
+    String CorpID = "wwa4015dc7d652a21f";
+
+    String SuiteID = "";
+}

we-com-server/src/main/java/com/tzld/piaoquan/wecom/controller/WeComController.java

@@ -0,0 +1,111 @@
+package com.tzld.piaoquan.wecom.controller;
+
+import com.tzld.piaoquan.wecom.common.constant.WeComServerConstant;
+import com.tzld.piaoquan.wecom.utils.wecom.AesException;
+import com.tzld.piaoquan.wecom.utils.wecom.WXBizMsgCrypt;
+import com.tzld.piaoquan.wecom.utils.wecom.WxUtil;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.web.bind.annotation.*;
+
+import javax.servlet.ServletInputStream;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.io.PrintWriter;
+import java.util.Map;
+
+@Slf4j
+@RestController
+@RequestMapping("/wecom/server")
+public class WeComController {
+
+    @Autowired
+    RedisTemplate<String, Object> redisTemplate;
+
+    @GetMapping("/verify")
+    public void verifyGet(HttpServletRequest request, HttpServletResponse response) throws AesException {
+        // 微信加密签名
+        String msgSignature = request.getParameter("msg_signature");
+        // 时间戳
+        String timestamp = request.getParameter("timestamp");
+        // 随机数
+        String nonce = request.getParameter("nonce");
+        // 随机字符串
+        // 如果是刷新，需返回原echostr
+        String echoStr = request.getParameter("echostr");
+        // 微信加密签名
+        WXBizMsgCrypt wxcpt = new WXBizMsgCrypt(WeComServerConstant.TOKEN, WeComServerConstant.EncodingAESKey, WeComServerConstant.CorpID);
+
+        String sEchoStr = ""; //需要返回的明文
+        PrintWriter out;
+        try {
+            sEchoStr = wxcpt.VerifyURL(msgSignature, timestamp,
+                    nonce, echoStr);
+            log.info("verifyurl echostr: " + sEchoStr);
+
+            // 验证URL成功，将sEchoStr返回
+            out = response.getWriter();
+            out.print(sEchoStr);
+        } catch (Exception e) {
+            //验证URL失败，错误原因请查看异常
+            log.error("verifyGet error", e);
+        }
+
+    }
+
+    /**
+     * 刷新 ticket
+     */
+    @PostMapping(value = "/verify")
+    public String verifyPost(HttpServletRequest request) throws Exception {
+
+        // 微信加密签名
+        String msg_signature = request.getParameter("msg_signature");
+        // 时间戳
+        String timestamp = request.getParameter("timestamp");
+        // 随机数
+        String nonce = request.getParameter("nonce");
+
+        String type = request.getParameter("type");
+
+        String corpId = request.getParameter("corpid");
+
+        String id = "";
+
+        // 访问应用和企业回调传不同的ID
+        if (type.equals("data")) {
+            id = corpId;
+        } else {
+            id = WeComServerConstant.SuiteID;
+        }
+
+
+        WXBizMsgCrypt wxcpt = new WXBizMsgCrypt(WeComServerConstant.TOKEN, WeComServerConstant.EncodingAESKey, id);
+
+        String postData = "";   // 密文，对应POST请求的数据
+        //1.获取加密的请求消息：使用输入流获得加密请求消息postData
+        ServletInputStream in = request.getInputStream();
+        BufferedReader reader = new BufferedReader(new InputStreamReader(in));
+
+        String tempStr = "";   //作为输出字符串的临时串，用于判断是否读取完毕
+        while (null != (tempStr = reader.readLine())) {
+            postData += tempStr;
+        }
+
+        String suiteXml = wxcpt.DecryptMsg(msg_signature, timestamp, nonce, postData);
+        log.info("suiteXml: " + suiteXml);
+
+        Map suiteMap = WxUtil.transferXmlToMap(suiteXml);
+        if (suiteMap.get("SuiteTicket") != null) {
+            String suiteTicket = (String) suiteMap.get("SuiteTicket");
+            redisTemplate.opsForValue().set("suiteTicket", suiteTicket);
+        } else if (suiteMap.get("AuthCode") != null) {
+            String authCode = (String) suiteMap.get("AuthCode");
+            redisTemplate.opsForValue().set("authCode", authCode);
+        }
+        return "success";
+    }
+}

we-com-server/src/main/java/com/tzld/piaoquan/wecom/utils/wecom/AesException.java

@@ -0,0 +1,59 @@
+package com.tzld.piaoquan.wecom.utils.wecom;
+
+@SuppressWarnings("serial")
+public class AesException extends Exception {
+
+	public final static int OK = 0;
+	public final static int ValidateSignatureError = -40001;
+	public final static int ParseXmlError = -40002;
+	public final static int ComputeSignatureError = -40003;
+	public final static int IllegalAesKey = -40004;
+	public final static int ValidateCorpidError = -40005;
+	public final static int EncryptAESError = -40006;
+	public final static int DecryptAESError = -40007;
+	public final static int IllegalBuffer = -40008;
+	//public final static int EncodeBase64Error = -40009;
+	//public final static int DecodeBase64Error = -40010;
+	//public final static int GenReturnXmlError = -40011;
+
+	private int code;
+
+	private static String getMessage(int code) {
+		switch (code) {
+		case ValidateSignatureError:
+			return "签名验证错误";
+		case ParseXmlError:
+			return "xml解析失败";
+		case ComputeSignatureError:
+			return "sha加密生成签名失败";
+		case IllegalAesKey:
+			return "SymmetricKey非法";
+		case ValidateCorpidError:
+			return "corpid校验失败";
+		case EncryptAESError:
+			return "aes加密失败";
+		case DecryptAESError:
+			return "aes解密失败";
+		case IllegalBuffer:
+			return "解密后得到的buffer非法";
+//		case EncodeBase64Error:
+//			return "base64加密错误";
+//		case DecodeBase64Error:
+//			return "base64解密错误";
+//		case GenReturnXmlError:
+//			return "xml生成失败";
+		default:
+			return null; // cannot be
+		}
+	}
+
+	public int getCode() {
+		return code;
+	}
+
+	AesException(int code) {
+		super(getMessage(code));
+		this.code = code;
+	}
+
+}

we-com-server/src/main/java/com/tzld/piaoquan/wecom/utils/wecom/ByteGroup.java

@@ -0,0 +1,26 @@
+package com.tzld.piaoquan.wecom.utils.wecom;
+
+import java.util.ArrayList;
+
+class ByteGroup {
+	ArrayList<Byte> byteContainer = new ArrayList<Byte>();
+
+	public byte[] toBytes() {
+		byte[] bytes = new byte[byteContainer.size()];
+		for (int i = 0; i < byteContainer.size(); i++) {
+			bytes[i] = byteContainer.get(i);
+		}
+		return bytes;
+	}
+
+	public ByteGroup addBytes(byte[] bytes) {
+		for (byte b : bytes) {
+			byteContainer.add(b);
+		}
+		return this;
+	}
+
+	public int size() {
+		return byteContainer.size();
+	}
+}

we-com-server/src/main/java/com/tzld/piaoquan/wecom/utils/wecom/PKCS7Encoder.java

@@ -0,0 +1,67 @@
+/**
+ * 对企业微信发送给企业后台的消息加解密示例代码.
+ * 
+ * @copyright Copyright (c) 1998-2014 Tencent Inc.
+ */
+
+// ------------------------------------------------------------------------
+
+package com.tzld.piaoquan.wecom.utils.wecom;
+
+import java.nio.charset.Charset;
+import java.util.Arrays;
+
+/**
+ * 提供基于PKCS7算法的加解密接口.
+ */
+class PKCS7Encoder {
+	static Charset CHARSET = Charset.forName("utf-8");
+	static int BLOCK_SIZE = 32;
+
+	/**
+	 * 获得对明文进行补位填充的字节.
+	 * 
+	 * @param count 需要进行填充补位操作的明文字节个数
+	 * @return 补齐用的字节数组
+	 */
+	static byte[] encode(int count) {
+		// 计算需要填充的位数
+		int amountToPad = BLOCK_SIZE - (count % BLOCK_SIZE);
+		if (amountToPad == 0) {
+			amountToPad = BLOCK_SIZE;
+		}
+		// 获得补位所用的字符
+		char padChr = chr(amountToPad);
+		String tmp = new String();
+		for (int index = 0; index < amountToPad; index++) {
+			tmp += padChr;
+		}
+		return tmp.getBytes(CHARSET);
+	}
+
+	/**
+	 * 删除解密后明文的补位字符
+	 * 
+	 * @param decrypted 解密后的明文
+	 * @return 删除补位字符后的明文
+	 */
+	static byte[] decode(byte[] decrypted) {
+		int pad = (int) decrypted[decrypted.length - 1];
+		if (pad < 1 || pad > 32) {
+			pad = 0;
+		}
+		return Arrays.copyOfRange(decrypted, 0, decrypted.length - pad);
+	}
+
+	/**
+	 * 将数字转化成ASCII码对应的字符，用于对明文进行补码
+	 * 
+	 * @param a 需要转化的数字
+	 * @return 转化得到的字符
+	 */
+	static char chr(int a) {
+		byte target = (byte) (a & 0xFF);
+		return (char) target;
+	}
+
+}

we-com-server/src/main/java/com/tzld/piaoquan/wecom/utils/wecom/SHA1.java

@@ -0,0 +1,61 @@
+/**
+ * 对企业微信发送给企业后台的消息加解密示例代码.
+ * 
+ * @copyright Copyright (c) 1998-2014 Tencent Inc.
+ */
+
+// ------------------------------------------------------------------------
+
+package com.tzld.piaoquan.wecom.utils.wecom;
+
+import java.security.MessageDigest;
+import java.util.Arrays;
+
+/**
+ * SHA1 class
+ *
+ * 计算消息签名接口.
+ */
+class SHA1 {
+
+	/**
+	 * 用SHA1算法生成安全签名
+	 * @param token 票据
+	 * @param timestamp 时间戳
+	 * @param nonce 随机字符串
+	 * @param encrypt 密文
+	 * @return 安全签名
+	 * @throws AesException 
+	 */
+	public static String getSHA1(String token, String timestamp, String nonce, String encrypt) throws AesException
+			  {
+		try {
+			String[] array = new String[] { token, timestamp, nonce, encrypt };
+			StringBuffer sb = new StringBuffer();
+			// 字符串排序
+			Arrays.sort(array);
+			for (int i = 0; i < 4; i++) {
+				sb.append(array[i]);
+			}
+			String str = sb.toString();
+			// SHA1签名生成
+			MessageDigest md = MessageDigest.getInstance("SHA-1");
+			md.update(str.getBytes());
+			byte[] digest = md.digest();
+
+			StringBuffer hexstr = new StringBuffer();
+			String shaHex = "";
+			for (int i = 0; i < digest.length; i++) {
+				shaHex = Integer.toHexString(digest[i] & 0xFF);
+				if (shaHex.length() < 2) {
+					hexstr.append(0);
+				}
+				hexstr.append(shaHex);
+			}
+			return hexstr.toString();
+		} catch (Exception e) {
+			e.printStackTrace();
+			throw new AesException(AesException.ComputeSignatureError);
+		}
+	}
+}

we-com-server/src/main/java/com/tzld/piaoquan/wecom/utils/wecom/WXBizMsgCrypt.java

@@ -0,0 +1,289 @@
+/**
+ * 对企业微信发送给企业后台的消息加解密示例代码.
+ * 
+ * @copyright Copyright (c) 1998-2014 Tencent Inc.
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * 针对org.apache.commons.codec.binary.Base64，
+ * 需要导入架包commons-codec-1.9（或commons-codec-1.8等其他版本）
+ * 官方下载地址：http://commons.apache.org/proper/commons-codec/download_codec.cgi
+ */
+package com.tzld.piaoquan.wecom.utils.wecom;
+
+import java.nio.charset.Charset;
+import java.util.Arrays;
+import java.util.Random;
+
+import javax.crypto.Cipher;
+import javax.crypto.spec.IvParameterSpec;
+import javax.crypto.spec.SecretKeySpec;
+
+import org.apache.commons.codec.binary.Base64;
+
+/**
+ * 提供接收和推送给企业微信消息的加解密接口(UTF8编码的字符串).
+ * <ol>
+ * 	<li>第三方回复加密消息给企业微信</li>
+ * 	<li>第三方收到企业微信发送的消息，验证消息的安全性，并对消息进行解密。</li>
+ * </ol>
+ * 说明：异常java.security.InvalidKeyException:illegal Key Size的解决方案
+ * <ol>
+ * 	<li>在官方网站下载JCE无限制权限策略文件（JDK7的下载地址：
+ *      http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html</li>
+ * 	<li>下载后解压，可以看到local_policy.jar和US_export_policy.jar以及readme.txt</li>
+ * 	<li>如果安装了JRE，将两个jar文件放到%JRE_HOME%\lib\security目录下覆盖原来的文件</li>
+ * 	<li>如果安装了JDK，将两个jar文件放到%JDK_HOME%\jre\lib\security目录下覆盖原来文件</li>
+ * </ol>
+ */
+public class WXBizMsgCrypt {
+	static Charset CHARSET = Charset.forName("utf-8");
+	Base64 base64 = new Base64();
+	byte[] aesKey;
+	String token;
+	String receiveid;
+
+	/**
+	 * 构造函数
+	 * @param token 企业微信后台，开发者设置的token
+	 * @param encodingAesKey 企业微信后台，开发者设置的EncodingAESKey
+	 * @param receiveid, 不同场景含义不同，详见文档
+	 * 
+	 * @throws AesException 执行失败，请查看该异常的错误码和具体的错误信息
+	 */
+	public WXBizMsgCrypt(String token, String encodingAesKey, String receiveid) throws AesException {
+		if (encodingAesKey.length() != 43) {
+			throw new AesException(AesException.IllegalAesKey);
+		}
+
+		this.token = token;
+		this.receiveid = receiveid;
+		aesKey = Base64.decodeBase64(encodingAesKey + "=");
+	}
+
+	// 生成4个字节的网络字节序
+	byte[] getNetworkBytesOrder(int sourceNumber) {
+		byte[] orderBytes = new byte[4];
+		orderBytes[3] = (byte) (sourceNumber & 0xFF);
+		orderBytes[2] = (byte) (sourceNumber >> 8 & 0xFF);
+		orderBytes[1] = (byte) (sourceNumber >> 16 & 0xFF);
+		orderBytes[0] = (byte) (sourceNumber >> 24 & 0xFF);
+		return orderBytes;
+	}
+
+	// 还原4个字节的网络字节序
+	int recoverNetworkBytesOrder(byte[] orderBytes) {
+		int sourceNumber = 0;
+		for (int i = 0; i < 4; i++) {
+			sourceNumber <<= 8;
+			sourceNumber |= orderBytes[i] & 0xff;
+		}
+		return sourceNumber;
+	}
+
+	// 随机生成16位字符串
+	String getRandomStr() {
+		String base = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+		Random random = new Random();
+		StringBuffer sb = new StringBuffer();
+		for (int i = 0; i < 16; i++) {
+			int number = random.nextInt(base.length());
+			sb.append(base.charAt(number));
+		}
+		return sb.toString();
+	}
+
+	/**
+	 * 对明文进行加密.
+	 * 
+	 * @param text 需要加密的明文
+	 * @return 加密后base64编码的字符串
+	 * @throws AesException aes加密失败
+	 */
+	String encrypt(String randomStr, String text) throws AesException {
+		ByteGroup byteCollector = new ByteGroup();
+		byte[] randomStrBytes = randomStr.getBytes(CHARSET);
+		byte[] textBytes = text.getBytes(CHARSET);
+		byte[] networkBytesOrder = getNetworkBytesOrder(textBytes.length);
+		byte[] receiveidBytes = receiveid.getBytes(CHARSET);
+
+		// randomStr + networkBytesOrder + text + receiveid
+		byteCollector.addBytes(randomStrBytes);
+		byteCollector.addBytes(networkBytesOrder);
+		byteCollector.addBytes(textBytes);
+		byteCollector.addBytes(receiveidBytes);
+
+		// ... + pad: 使用自定义的填充方式对明文进行补位填充
+		byte[] padBytes = PKCS7Encoder.encode(byteCollector.size());
+		byteCollector.addBytes(padBytes);
+
+		// 获得最终的字节流, 未加密
+		byte[] unencrypted = byteCollector.toBytes();
+
+		try {
+			// 设置加密模式为AES的CBC模式
+			Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
+			SecretKeySpec keySpec = new SecretKeySpec(aesKey, "AES");
+			IvParameterSpec iv = new IvParameterSpec(aesKey, 0, 16);
+			cipher.init(Cipher.ENCRYPT_MODE, keySpec, iv);
+
+			// 加密
+			byte[] encrypted = cipher.doFinal(unencrypted);
+
+			// 使用BASE64对加密后的字符串进行编码
+			String base64Encrypted = base64.encodeToString(encrypted);
+
+			return base64Encrypted;
+		} catch (Exception e) {
+			e.printStackTrace();
+			throw new AesException(AesException.EncryptAESError);
+		}
+	}
+
+	/**
+	 * 对密文进行解密.
+	 * 
+	 * @param text 需要解密的密文
+	 * @return 解密得到的明文
+	 * @throws AesException aes解密失败
+	 */
+	String decrypt(String text) throws AesException {
+		byte[] original;
+		try {
+			// 设置解密模式为AES的CBC模式
+			Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
+			SecretKeySpec key_spec = new SecretKeySpec(aesKey, "AES");
+			IvParameterSpec iv = new IvParameterSpec(Arrays.copyOfRange(aesKey, 0, 16));
+			cipher.init(Cipher.DECRYPT_MODE, key_spec, iv);
+
+			// 使用BASE64对密文进行解码
+			byte[] encrypted = Base64.decodeBase64(text);
+
+			// 解密
+			original = cipher.doFinal(encrypted);
+		} catch (Exception e) {
+			e.printStackTrace();
+			throw new AesException(AesException.DecryptAESError);
+		}
+
+		String xmlContent, from_receiveid;
+		try {
+			// 去除补位字符
+			byte[] bytes = PKCS7Encoder.decode(original);
+
+			// 分离16位随机字符串,网络字节序和receiveid
+			byte[] networkOrder = Arrays.copyOfRange(bytes, 16, 20);
+
+			int xmlLength = recoverNetworkBytesOrder(networkOrder);
+
+			xmlContent = new String(Arrays.copyOfRange(bytes, 20, 20 + xmlLength), CHARSET);
+			from_receiveid = new String(Arrays.copyOfRange(bytes, 20 + xmlLength, bytes.length),
+					CHARSET);
+		} catch (Exception e) {
+			e.printStackTrace();
+			throw new AesException(AesException.IllegalBuffer);
+		}
+
+		// receiveid不相同的情况
+		if (!from_receiveid.equals(receiveid)) {
+			throw new AesException(AesException.ValidateCorpidError);
+		}
+		return xmlContent;
+
+	}
+
+	/**
+	 * 将企业微信回复用户的消息加密打包.
+	 * <ol>
+	 * 	<li>对要发送的消息进行AES-CBC加密</li>
+	 * 	<li>生成安全签名</li>
+	 * 	<li>将消息密文和安全签名打包成xml格式</li>
+	 * </ol>
+	 * 
+	 * @param replyMsg 企业微信待回复用户的消息，xml格式的字符串
+	 * @param timeStamp 时间戳，可以自己生成，也可以用URL参数的timestamp
+	 * @param nonce 随机串，可以自己生成，也可以用URL参数的nonce
+	 * 
+	 * @return 加密后的可以直接回复用户的密文，包括msg_signature, timestamp, nonce, encrypt的xml格式的字符串
+	 * @throws AesException 执行失败，请查看该异常的错误码和具体的错误信息
+	 */
+	public String EncryptMsg(String replyMsg, String timeStamp, String nonce) throws AesException {
+		// 加密
+		String encrypt = encrypt(getRandomStr(), replyMsg);
+
+		// 生成安全签名
+		if (timeStamp == "") {
+			timeStamp = Long.toString(System.currentTimeMillis());
+		}
+
+		String signature = SHA1.getSHA1(token, timeStamp, nonce, encrypt);
+
+		// System.out.println("发送给平台的签名是: " + signature[1].toString());
+		// 生成发送的xml
+		String result = XMLParse.generate(encrypt, signature, timeStamp, nonce);
+		return result;
+	}
+
+	/**
+	 * 检验消息的真实性，并且获取解密后的明文.
+	 * <ol>
+	 * 	<li>利用收到的密文生成安全签名，进行签名验证</li>
+	 * 	<li>若验证通过，则提取xml中的加密消息</li>
+	 * 	<li>对消息进行解密</li>
+	 * </ol>
+	 * 
+	 * @param msgSignature 签名串，对应URL参数的msg_signature
+	 * @param timeStamp 时间戳，对应URL参数的timestamp
+	 * @param nonce 随机串，对应URL参数的nonce
+	 * @param postData 密文，对应POST请求的数据
+	 * 
+	 * @return 解密后的原文
+	 * @throws AesException 执行失败，请查看该异常的错误码和具体的错误信息
+	 */
+	public String DecryptMsg(String msgSignature, String timeStamp, String nonce, String postData)
+			throws AesException {
+
+		// 密钥，公众账号的app secret
+		// 提取密文
+		Object[] encrypt = XMLParse.extract(postData);
+
+		// 验证安全签名
+		String signature = SHA1.getSHA1(token, timeStamp, nonce, encrypt[1].toString());
+
+		// 和URL中的签名比较是否相等
+		// System.out.println("第三方收到URL中的签名：" + msg_sign);
+		// System.out.println("第三方校验签名：" + signature);
+		if (!signature.equals(msgSignature)) {
+			throw new AesException(AesException.ValidateSignatureError);
+		}
+
+		// 解密
+		String result = decrypt(encrypt[1].toString());
+		return result;
+	}
+
+	/**
+	 * 验证URL
+	 * @param msgSignature 签名串，对应URL参数的msg_signature
+	 * @param timeStamp 时间戳，对应URL参数的timestamp
+	 * @param nonce 随机串，对应URL参数的nonce
+	 * @param echoStr 随机串，对应URL参数的echostr
+	 * 
+	 * @return 解密之后的echostr
+	 * @throws AesException 执行失败，请查看该异常的错误码和具体的错误信息
+	 */
+	public String VerifyURL(String msgSignature, String timeStamp, String nonce, String echoStr)
+			throws AesException {
+		String signature = SHA1.getSHA1(token, timeStamp, nonce, echoStr);
+
+		if (!signature.equals(msgSignature)) {
+			throw new AesException(AesException.ValidateSignatureError);
+		}
+
+		String result = decrypt(echoStr);
+		return result;
+	}
+
+}

we-com-server/src/main/java/com/tzld/piaoquan/wecom/utils/wecom/WxUtil.java

@@ -0,0 +1,95 @@
+package com.tzld.piaoquan.wecom.utils.wecom;
+
+import org.jdom2.Document;
+import org.jdom2.Element;
+import org.jdom2.JDOMException;
+import org.jdom2.input.SAXBuilder;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.*;
+
+public class WxUtil {
+
+    /**
+     * 将 Map 转化为 XML
+     *
+     * @param map
+     * @return
+     */
+    public static String transferMapToXml(SortedMap<String, Object> map) {
+        StringBuffer sb = new StringBuffer();
+        sb.append("<xml>");
+        for (String key : map.keySet()) {
+            sb.append("<").append(key).append(">")
+                    .append(map.get(key))
+                    .append("</").append(key).append(">");
+        }
+        return sb.append("</xml>").toString();
+    }
+
+    /**
+     * 将 XML 转化为 map
+     *
+     * @param strxml
+     * @return
+     * @throws IOException
+     */
+    public static Map transferXmlToMap(String strxml) throws IOException {
+        strxml = strxml.replaceFirst("encoding=\".*\"", "encoding=\"UTF-8\"");
+        if (null == strxml || "".equals(strxml)) {
+            return null;
+        }
+        Map m = new HashMap();
+        InputStream in = new ByteArrayInputStream(strxml.getBytes("UTF-8"));
+        SAXBuilder builder = new SAXBuilder();
+        Document doc = null;
+        try {
+            doc = builder.build(in);
+        } catch (JDOMException e) {
+            throw new IOException(e.getMessage()); // 统一转化为 IO 异常输出
+        }
+        // 解析 DOM
+        Element root = doc.getRootElement();
+        List list = root.getChildren();
+        Iterator it = list.iterator();
+        while (it.hasNext()) {
+            Element e = (Element) it.next();
+            String k = e.getName();
+            String v = "";
+            List children = e.getChildren();
+            if (children.isEmpty()) {
+                v = e.getTextNormalize();
+            } else {
+                v = getChildrenText(children);
+            }
+            m.put(k, v);
+        }
+        //关闭流
+        in.close();
+        return m;
+    }
+
+    // 辅助 transferXmlToMap 方法递归提取子节点数据
+    private static String getChildrenText(List<Element> children) {
+        StringBuffer sb = new StringBuffer();
+        if (!children.isEmpty()) {
+            Iterator<Element> it = children.iterator();
+            while (it.hasNext()) {
+                Element e = (Element) it.next();
+                String name = e.getName();
+                String value = e.getTextNormalize();
+                List<Element> list = e.getChildren();
+                sb.append("<" + name + ">");
+                if (!list.isEmpty()) {
+                    sb.append(getChildrenText(list));
+                }
+                sb.append(value);
+                sb.append("</" + name + ">");
+            }
+        }
+        return sb.toString();
+    }
+
+}

we-com-server/src/main/java/com/tzld/piaoquan/wecom/utils/wecom/XMLParse.java

@@ -0,0 +1,104 @@
+/**
+ * 对企业微信发送给企业后台的消息加解密示例代码.
+ * 
+ * @copyright Copyright (c) 1998-2014 Tencent Inc.
+ */
+
+// ------------------------------------------------------------------------
+
+package com.tzld.piaoquan.wecom.utils.wecom;
+
+import java.io.StringReader;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.NodeList;
+import org.xml.sax.InputSource;
+
+/**
+ * XMLParse class
+ *
+ * 提供提取消息格式中的密文及生成回复消息格式的接口.
+ */
+class XMLParse {
+
+	/**
+	 * 提取出xml数据包中的加密消息
+	 * @param xmltext 待提取的xml字符串
+	 * @return 提取出的加密消息字符串
+	 * @throws AesException 
+	 */
+	public static Object[] extract(String xmltext) throws AesException     {
+		Object[] result = new Object[3];
+		try {
+			DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
+			
+			String FEATURE = null;
+			// This is the PRIMARY defense. If DTDs (doctypes) are disallowed, almost all XML entity attacks are prevented
+			// Xerces 2 only - http://xerces.apache.org/xerces2-j/features.html#disallow-doctype-decl
+			FEATURE = "http://apache.org/xml/features/disallow-doctype-decl";
+			dbf.setFeature(FEATURE, true);
+			
+			// If you can't completely disable DTDs, then at least do the following:
+			// Xerces 1 - http://xerces.apache.org/xerces-j/features.html#external-general-entities
+			// Xerces 2 - http://xerces.apache.org/xerces2-j/features.html#external-general-entities
+			// JDK7+ - http://xml.org/sax/features/external-general-entities 
+			FEATURE = "http://xml.org/sax/features/external-general-entities";
+			dbf.setFeature(FEATURE, false);
+			
+			// Xerces 1 - http://xerces.apache.org/xerces-j/features.html#external-parameter-entities
+			// Xerces 2 - http://xerces.apache.org/xerces2-j/features.html#external-parameter-entities
+			// JDK7+ - http://xml.org/sax/features/external-parameter-entities 
+			FEATURE = "http://xml.org/sax/features/external-parameter-entities";
+			dbf.setFeature(FEATURE, false);
+			
+			// Disable external DTDs as well
+			FEATURE = "http://apache.org/xml/features/nonvalidating/load-external-dtd";
+			dbf.setFeature(FEATURE, false);
+			
+			// and these as well, per Timothy Morgan's 2014 paper: "XML Schema, DTD, and Entity Attacks"
+			dbf.setXIncludeAware(false);
+			dbf.setExpandEntityReferences(false);
+			
+			// And, per Timothy Morgan: "If for some reason support for inline DOCTYPEs are a requirement, then 
+			// ensure the entity settings are disabled (as shown above) and beware that SSRF attacks
+			// (http://cwe.mitre.org/data/definitions/918.html) and denial 
+			// of service attacks (such as billion laughs or decompression bombs via "jar:") are a risk."
+			
+			// remaining parser logic
+			DocumentBuilder db = dbf.newDocumentBuilder();
+			StringReader sr = new StringReader(xmltext);
+			InputSource is = new InputSource(sr);
+			Document document = db.parse(is);
+
+			Element root = document.getDocumentElement();
+			NodeList nodelist1 = root.getElementsByTagName("Encrypt");
+			result[0] = 0;
+			result[1] = nodelist1.item(0).getTextContent();
+			return result;
+		} catch (Exception e) {
+			e.printStackTrace();
+			throw new AesException(AesException.ParseXmlError);
+		}
+	}
+
+	/**
+	 * 生成xml消息
+	 * @param encrypt 加密后的消息密文
+	 * @param signature 安全签名
+	 * @param timestamp 时间戳
+	 * @param nonce 随机字符串
+	 * @return 生成的xml字符串
+	 */
+	public static String generate(String encrypt, String signature, String timestamp, String nonce) {
+
+		String format = "<xml>\n" + "<Encrypt><![CDATA[%1$s]]></Encrypt>\n"
+				+ "<MsgSignature><![CDATA[%2$s]]></MsgSignature>\n"
+				+ "<TimeStamp>%3$s</TimeStamp>\n" + "<Nonce><![CDATA[%4$s]]></Nonce>\n" + "</xml>";
+		return String.format(format, encrypt, signature, timestamp, nonce);
+
+	}
+}