添加删除门店的接口， for issue #17

Author: binarywang

weixin-java-mp/src/main/java/me/chanjar/weixin/mp/api/WxMpStoreService.java

@@ -36,11 +36,22 @@ public interface WxMpStoreService {
    * 注：扩展字段为公共编辑信息（大家都可修改），修改将会审核，并决定是否对修改建议进行采纳，但不会影响该门店的生效可用状态。
    * 详情请见: <a href="https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1444378120&token=&lang=zh_CN">微信门店接口</a>
    * </pre>
-   * @param poiId  门店poiId
+   * @param poiId  门店Id
    * @throws WxErrorException
    */
   WxMpStoreBaseInfo get(String poiId) throws WxErrorException;
 
+  /**
+   * <pre>
+   * 删除门店
+   * 商户可以通过该接口，删除已经成功创建的门店。请商户慎重调用该接口。
+   * 详情请见: <a href="https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1444378120&token=&lang=zh_CN">微信门店接口</a>
+   * </pre>
+   * @param poiId  门店Id
+   * @throws WxErrorException
+   */
+  void delete(String poiId) throws WxErrorException;
+
   /**
    * <pre>
    * 查询门店列表(指定查询起始位置和个数)

weixin-java-mp/src/main/java/me/chanjar/weixin/mp/api/impl/WxMpStoreServiceImpl.java

@@ -57,6 +57,18 @@ public WxMpStoreBaseInfo get(String poiId) throws WxErrorException {
         .get("business").getAsJsonObject().get("base_info").toString());
   }
 
+  @Override
+  public void delete(String poiId) throws WxErrorException {
+    String url = API_BASE_URL + "/delpoi";
+    JsonObject paramObject = new JsonObject();
+    paramObject.addProperty("poi_id",poiId);
+    String response = this.wxMpService.post(url, paramObject.toString());
+    WxError wxError = WxError.fromJson(response);
+    if (wxError.getErrorCode() != 0) {
+      throw new WxErrorException(wxError);
+    }
+  }
+
   private void checkParameters(WxMpStoreBaseInfo request) {
     List<String> nullFields = Lists.newArrayList();
     for (Entry<String, Reflect> entry : Reflect.on(request).fields()

weixin-java-mp/src/test/java/me/chanjar/weixin/mp/api/impl/WxMpStoreServiceImplTest.java

@@ -52,6 +52,10 @@ public void testGet() throws WxErrorException {
     System.err.println(result);
   }
 
+  public void testDelete() throws WxErrorException {
+    this.wxMpService.getStoreService().delete("463558057");
+  }
+
   public void testList() throws WxErrorException {
     WxMpStoreListResult result = this.wxMpService.getStoreService().list(0, 10);
     assertNotNull(result);