微信服务号踩坑！微信服务号被动回复消息：该公众号提供的服务出现故障，请稍后再试

List<坑>

1.消息xml内不能有空格

2.不不不，不是文档上说的，开放平台的文档上说要加密！！

下面放源码：

 if ("CLICK".equals(data.optString("Event")) && DSHUtils.isNotEmpty(data.optString("EventKey"))) {
                        String eventKey = data.optString("EventKey");// rselemenu_3_4
                        String toUserName = data.getString("ToUserName"); // 公众号原始ID
                        String openid = data.getString("FromUserName"); // 发送方帐号openId
                        if (eventKey.equals("rselemenu_3_4")) {
                            StringBuffer str = new StringBuffer();
                            str.append("<xml>");
                            str.append("<ToUserName><![CDATA[" + openid + "]]></ToUserName>");
                            str.append("<FromUserName><![CDATA[" + toUserName + "]]></FromUserName>");
                            str.append("<CreateTime>" + System.currentTimeMillis() / 1000 + "</CreateTime>");
                            str.append("<MsgType><![CDATA[" + "text" + "]]></MsgType>");
                            str.append("<Content><![CDATA[" + "测试文本消息 By Fenny Jia" + "]]></Content>");
                            str.append("</xml>");
                            String msg = pc.encryptMsg(str.toString(), String.valueOf(System.currentTimeMillis() / 1000), nonce);
                            return msg;
                        }

                    }

其中pc.encryptMsg加密的方法是用的微信的源码
WXBizMsgCrypt pc = new WXBizMsgCrypt(token, encodingAesKey, appId);