增加获取客服聊天记录的重载方法，方便一次性获取一定时间间隔内的所有聊天记录

Author: binarywang

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

@@ -136,7 +136,7 @@ boolean kfAccountUploadHeadImg(String kfAccount, File imgFile)
   //*******************获取聊天记录的接口***********************//
   /**
    * <pre>
-   * 获取聊天记录
+   * 获取聊天记录（原始接口）
    * 此接口返回的聊天记录中，对于图片、语音、视频，分别展示成文本格式的[image]、[voice]、[video]
    * 详情请见：<a href="http://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1464937269_mUtmK&token=&lang=zh_CN">获取聊天记录</a>
    * 接口url格式： https://api.weixin.qq.com/customservice/msgrecord/getmsglist?access_token=ACCESS_TOKEN
@@ -149,6 +149,21 @@ boolean kfAccountUploadHeadImg(String kfAccount, File imgFile)
    * @return 聊天记录对象
    * @throws WxErrorException
    */
-  WxMpKfMsgList kfMsgList(Date startTime, Date endTime, Integer msgId, Integer number) throws WxErrorException;
+  WxMpKfMsgList kfMsgList(Date startTime, Date endTime, Long msgId, Integer number) throws WxErrorException;
+
+  /**
+   * <pre>
+   * 获取聊天记录（优化接口，返回指定时间段内所有的聊天记录）
+   * 此接口返回的聊天记录中，对于图片、语音、视频，分别展示成文本格式的[image]、[voice]、[video]
+   * 详情请见：<a href="http://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1464937269_mUtmK&token=&lang=zh_CN">获取聊天记录</a>
+   * 接口url格式： https://api.weixin.qq.com/customservice/msgrecord/getmsglist?access_token=ACCESS_TOKEN
+   * </pre>
+   *
+   * @param startTime 起始时间
+   * @param endTime 结束时间
+   * @return 聊天记录对象
+   * @throws WxErrorException
+   */
+  WxMpKfMsgList kfMsgList(Date startTime, Date endTime) throws WxErrorException;
 
 }

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

@@ -133,7 +133,11 @@ public WxMpKfSessionWaitCaseList kfSessionGetWaitCase()
   }
 
   @Override
-  public WxMpKfMsgList kfMsgList(Date startTime, Date endTime, Integer msgId, Integer number) throws WxErrorException {
+  public WxMpKfMsgList kfMsgList(Date startTime, Date endTime, Long msgId, Integer number) throws WxErrorException {
+    if(number > 10000){
+      throw new WxErrorException(WxError.newBuilder().setErrorMsg("非法参数请求，每次最多查询10000条记录！").build());
+    }
+
     if(startTime.after(endTime)){
       throw new WxErrorException(WxError.newBuilder().setErrorMsg("起始时间不能晚于结束时间！").build());
     }
@@ -150,4 +154,23 @@ public WxMpKfMsgList kfMsgList(Date startTime, Date endTime, Integer msgId, Inte
     return WxMpKfMsgList.fromJson(responseContent);
   }
 
+  @Override
+  public WxMpKfMsgList kfMsgList(Date startTime, Date endTime) throws WxErrorException {
+    int number = 10000;
+    WxMpKfMsgList result =  this.kfMsgList(startTime,endTime, 1L, number);
+    Long msgId = result.getMsgId();
+    
+    if(result != null && result.getNumber() >= number){
+      WxMpKfMsgList followingResult =  this.kfMsgList(startTime,endTime, msgId, number);
+      while(followingResult != null  && followingResult.getRecords().size() > 0){
+        result.getRecords().addAll(followingResult.getRecords());
+        result.setNumber(result.getNumber() + followingResult.getNumber());
+        result.setMsgId(followingResult.getMsgId());
+        followingResult = this.kfMsgList(startTime,endTime, followingResult.getMsgId(), number);
+      }
+    }
+
+    return result;
+  }
+
 }

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

@@ -147,12 +147,19 @@ public void testKfSessionGetWaitCase() throws WxErrorException {
 
   @Test
   public void testKfMsgList() throws WxErrorException, JsonProcessingException {
-    BasicConfigurator.configureDefaultContext();
     Date startTime = DateTime.now().minusDays(1).toDate();
-    Date endTime = DateTime.now().toDate();
-    WxMpKfMsgList result = this.wxService.getKefuService().kfMsgList(startTime,endTime, 0, 20);
+    Date endTime = DateTime.now().minusDays(0).toDate();
+    WxMpKfMsgList result = this.wxService.getKefuService().kfMsgList(startTime,endTime, 1L, 50);
     Assert.assertNotNull(result);
     System.err.println(new ObjectMapper().writeValueAsString(result));
   }
 
+  @Test
+  public void testKfMsgListAll() throws WxErrorException, JsonProcessingException {
+    Date startTime = DateTime.now().minusDays(1).toDate();
+    Date endTime = DateTime.now().minusDays(0).toDate();
+    WxMpKfMsgList result = this.wxService.getKefuService().kfMsgList(startTime,endTime);
+    Assert.assertNotNull(result);
+    System.err.println(new ObjectMapper().writeValueAsString(result));
+  }
 }