#193 增加小程序模块weixin-java-miniapp，支持小程序后台开发

weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/util/crypt/WxMaCryptUtils.java

@@ -0,0 +1,43 @@
+package cn.binarywang.wx.miniapp.util.crypt;
+
+import cn.binarywang.wx.miniapp.config.WxMaConfig;
+import me.chanjar.weixin.common.util.crypto.PKCS7Encoder;
+import org.apache.commons.codec.binary.Base64;
+
+import javax.crypto.Cipher;
+import javax.crypto.spec.IvParameterSpec;
+import javax.crypto.spec.SecretKeySpec;
+import java.nio.charset.StandardCharsets;
+import java.security.AlgorithmParameters;
+
+/**
+ * @author <a href="https://github.com/binarywang">Binary Wang</a>
+ */
+public class WxMaCryptUtils extends me.chanjar.weixin.common.util.crypto.WxCryptUtil {
+  public WxMaCryptUtils(WxMaConfig config) {
+    this.appidOrCorpid = config.getAppid();
+    this.token = config.getToken();
+    this.aesKey = Base64.decodeBase64(config.getAesKey() + "=");
+  }
+
+  /**
+   * AES解密
+   *
+   * @param encryptedData 消息密文
+   * @param ivStr         iv字符串
+   */
+  public static String decrypt(String sessionKey, String encryptedData, String ivStr) {
+    try {
+      AlgorithmParameters params = AlgorithmParameters.getInstance("AES");
+      params.init(new IvParameterSpec(Base64.decodeBase64(ivStr)));
+
+      Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
+      cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(Base64.decodeBase64(sessionKey), "AES"), params);
+
+      return new String(PKCS7Encoder.decode(cipher.doFinal(Base64.decodeBase64(encryptedData))), StandardCharsets.UTF_8);
+    } catch (Exception e) {
+      throw new RuntimeException("AES解密失败", e);
+    }
+  }
+
+}

weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/util/http/QrCodeRequestExecutor.java

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+package cn.binarywang.wx.miniapp.util.http;
+
+import cn.binarywang.wx.miniapp.bean.WxMaQrcode;
+import me.chanjar.weixin.common.bean.result.WxError;
+import me.chanjar.weixin.common.exception.WxErrorException;
+import me.chanjar.weixin.common.util.fs.FileUtils;
+import me.chanjar.weixin.common.util.http.RequestExecutor;
+import me.chanjar.weixin.common.util.http.RequestHttp;
+import me.chanjar.weixin.common.util.http.apache.InputStreamResponseHandler;
+import me.chanjar.weixin.common.util.http.apache.Utf8ResponseHandler;
+import org.apache.http.Header;
+import org.apache.http.HttpHost;
+import org.apache.http.client.config.RequestConfig;
+import org.apache.http.client.methods.CloseableHttpResponse;
+import org.apache.http.client.methods.HttpPost;
+import org.apache.http.entity.ContentType;
+import org.apache.http.entity.StringEntity;
+import org.apache.http.impl.client.CloseableHttpClient;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.UUID;
+
+/**
+ * @author <a href="https://github.com/binarywang">Binary Wang</a>
+ */
+public class QrCodeRequestExecutor implements RequestExecutor<File, WxMaQrcode> {
+  protected RequestHttp<CloseableHttpClient, HttpHost> requestHttp;
+
+  public QrCodeRequestExecutor(RequestHttp requestHttp) {
+    this.requestHttp = requestHttp;
+  }
+
+  @Override
+  public File execute(String uri, WxMaQrcode ticket) throws WxErrorException, IOException {
+    HttpPost httpPost = new HttpPost(uri);
+    if (requestHttp.getRequestHttpProxy() != null) {
+      httpPost
+        .setConfig(RequestConfig.custom()
+          .setProxy(requestHttp.getRequestHttpProxy())
+          .build()
+        );
+    }
+    httpPost.setEntity(new StringEntity(ticket.toString()));
+
+    try (CloseableHttpResponse response = requestHttp.getRequestHttpClient().execute(httpPost);
+         InputStream inputStream = InputStreamResponseHandler.INSTANCE.handleResponse(response);) {
+      Header[] contentTypeHeader = response.getHeaders("Content-Type");
+      if (contentTypeHeader != null && contentTypeHeader.length > 0
+        && ContentType.TEXT_PLAIN.getMimeType().equals(contentTypeHeader[0].getValue())) {
+        String responseContent = Utf8ResponseHandler.INSTANCE.handleResponse(response);
+        throw new WxErrorException(WxError.fromJson(responseContent));
+      }
+
+      return FileUtils.createTmpFile(inputStream, UUID.randomUUID().toString(), "jpg");
+    } finally {
+      httpPost.releaseConnection();
+    }
+  }
+}

weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/util/json/WxMaGsonBuilder.java

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+package cn.binarywang.wx.miniapp.util.json;
+
+import cn.binarywang.wx.miniapp.bean.WxMaKefuMessage;
+import cn.binarywang.wx.miniapp.bean.WxMaTemplateMessage;
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+
+/**
+ * @author <a href="https://github.com/binarywang">Binary Wang</a>
+ */
+public class WxMaGsonBuilder {
+  private static final GsonBuilder INSTANCE = new GsonBuilder();
+
+  static {
+    INSTANCE.disableHtmlEscaping();
+    INSTANCE.registerTypeAdapter(WxMaKefuMessage.class, new WxMaKefuMessageGsonAdapter());
+    INSTANCE.registerTypeAdapter(WxMaTemplateMessage.class, new WxMaTemplateMessageGsonAdapter());
+  }
+
+  public static Gson create() {
+    return INSTANCE.create();
+  }
+
+}

weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/util/json/WxMaKefuMessageGsonAdapter.java

@@ -0,0 +1,47 @@
+/*
+ * KINGSTAR MEDIA SOLUTIONS Co.,LTD. Copyright c 2005-2013. All rights reserved.
+ *
+ * This source code is the property of KINGSTAR MEDIA SOLUTIONS LTD. It is intended
+ * only for the use of KINGSTAR MEDIA application development. Reengineering, reproduction
+ * arose from modification of the original source, or other redistribution of this source
+ * is not permitted without written permission of the KINGSTAR MEDIA SOLUTIONS LTD.
+ */
+package cn.binarywang.wx.miniapp.util.json;
+
+import cn.binarywang.wx.miniapp.bean.WxMaKefuMessage;
+import cn.binarywang.wx.miniapp.constant.WxMaConstants;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonSerializationContext;
+import com.google.gson.JsonSerializer;
+import org.apache.commons.lang3.StringUtils;
+
+import java.lang.reflect.Type;
+
+/**
+ * @author <a href="https://github.com/binarywang">Binary Wang</a>
+ */
+public class WxMaKefuMessageGsonAdapter implements JsonSerializer<WxMaKefuMessage> {
+
+  @Override
+  public JsonElement serialize(WxMaKefuMessage message, Type typeOfSrc, JsonSerializationContext context) {
+    JsonObject messageJson = new JsonObject();
+    messageJson.addProperty("touser", message.getToUser());
+    messageJson.addProperty("msgtype", message.getMsgType());
+
+    if (WxMaConstants.KefuMsgType.TEXT.equals(message.getMsgType())) {
+      JsonObject text = new JsonObject();
+      text.addProperty("content", message.getContent());
+      messageJson.add("text", text);
+    }
+
+    if (WxMaConstants.KefuMsgType.IMAGE.equals(message.getMsgType())) {
+      JsonObject image = new JsonObject();
+      image.addProperty("media_id", message.getMediaId());
+      messageJson.add("image", image);
+    }
+
+    return messageJson;
+  }
+
+}

weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/util/json/WxMaTemplateMessageGsonAdapter.java

@@ -0,0 +1,60 @@
+package cn.binarywang.wx.miniapp.util.json;
+
+import cn.binarywang.wx.miniapp.bean.WxMaTemplateMessage;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonSerializationContext;
+import com.google.gson.JsonSerializer;
+
+import java.lang.reflect.Type;
+
+/**
+ * @author <a href="https://github.com/binarywang">Binary Wang</a>
+ */
+public class WxMaTemplateMessageGsonAdapter implements JsonSerializer<WxMaTemplateMessage> {
+
+  @Override
+  public JsonElement serialize(WxMaTemplateMessage message, Type typeOfSrc, JsonSerializationContext context) {
+    JsonObject messageJson = new JsonObject();
+    messageJson.addProperty("touser", message.getToUser());
+    messageJson.addProperty("template_id", message.getTemplateId());
+    if (message.getPage() != null) {
+      messageJson.addProperty("page", message.getPage());
+    }
+
+    if (message.getFormId() != null) {
+      messageJson.addProperty("form_id", message.getFormId());
+    }
+
+    if (message.getPage() != null) {
+      messageJson.addProperty("page", message.getPage());
+    }
+
+    if (message.getColor() != null) {
+      messageJson.addProperty("color", message.getColor());
+    }
+
+    if (message.getEmphasisKeyword() != null) {
+      messageJson.addProperty("emphasis_keyword", message.getEmphasisKeyword());
+    }
+
+    JsonObject data = new JsonObject();
+    messageJson.add("data", data);
+
+    if (message.getData() == null) {
+      return messageJson;
+    }
+
+    for (WxMaTemplateMessage.Data datum : message.getData()) {
+      JsonObject dataJson = new JsonObject();
+      dataJson.addProperty("value", datum.getValue());
+      if (datum.getColor() != null) {
+        dataJson.addProperty("color", datum.getColor());
+      }
+      data.add(datum.getName(), dataJson);
+    }
+
+    return messageJson;
+  }
+
+}

weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/util/xml/XStreamTransformer.java

@@ -0,0 +1,88 @@
+package cn.binarywang.wx.miniapp.util.xml;
+
+import cn.binarywang.wx.miniapp.bean.WxMaMessage;
+import com.thoughtworks.xstream.XStream;
+import me.chanjar.weixin.common.util.xml.XStreamInitializer;
+
+import java.io.InputStream;
+import java.util.*;
+
+/**
+ * @author <a href="https://github.com/binarywang">Binary Wang</a>
+ */
+public class XStreamTransformer {
+  private static final Map<Class<?>, XStream> CLASS_2_XSTREAM_INSTANCE = new HashMap<>();
+
+  static {
+    registerClass(WxMaMessage.class);
+  }
+
+  /**
+   * xml -> pojo
+   */
+  @SuppressWarnings("unchecked")
+  public static <T> T fromXml(Class<T> clazz, String xml) {
+    T object = (T) CLASS_2_XSTREAM_INSTANCE.get(clazz).fromXML(xml);
+    return object;
+  }
+
+  @SuppressWarnings("unchecked")
+  public static <T> T fromXml(Class<T> clazz, InputStream is) {
+    T object = (T) CLASS_2_XSTREAM_INSTANCE.get(clazz).fromXML(is);
+    return object;
+  }
+
+  /**
+   * pojo -> xml
+   */
+  public static <T> String toXml(Class<T> clazz, T object) {
+    return CLASS_2_XSTREAM_INSTANCE.get(clazz).toXML(object);
+  }
+
+  /**
+   * 注册扩展消息的解析器
+   *
+   * @param clz     类型
+   * @param xStream xml解析器
+   */
+  private static void register(Class<?> clz, XStream xStream) {
+    CLASS_2_XSTREAM_INSTANCE.put(clz, xStream);
+  }
+
+  /**
+   * 会自动注册该类及其子类
+   *
+   * @param clz 要注册的类
+   */
+  private static void registerClass(Class<?> clz) {
+    XStream xstream = XStreamInitializer.getInstance();
+    xstream.processAnnotations(clz);
+    xstream.processAnnotations(getInnerClasses(clz));
+    if (clz.equals(WxMaMessage.class)) {
+      // 操蛋的微信，模板消息推送成功的消息是MsgID，其他消息推送过来是MsgId
+      xstream.aliasField("MsgID", WxMaMessage.class, "msgId");
+    }
+
+    register(clz, xstream);
+  }
+
+  private static Class<?>[] getInnerClasses(Class<?> clz) {
+    Class<?>[] innerClasses = clz.getClasses();
+    if (innerClasses == null) {
+      return null;
+    }
+
+    List<Class<?>> result = new ArrayList<>();
+    result.addAll(Arrays.asList(innerClasses));
+    for (Class<?> inner : innerClasses) {
+      Class<?>[] innerClz = getInnerClasses(inner);
+      if (innerClz == null) {
+        continue;
+      }
+
+      result.addAll(Arrays.asList(innerClz));
+    }
+
+    return result.toArray(new Class<?>[0]);
+  }
+}