公众号demo程序发送一次性订阅消息时空指针 #483
Description
模块：weixin-java-mp
版本：develop分支48d3163b33a1d6dde5fa1ac730798b857ae63fae
功能：一次性订阅消息
问题：用户授权后推送订阅模板消息给该用户时demo程序空指针
错误信息：
java.lang.NullPointerException
at me.chanjar.weixin.mp.api.impl.WxMpServiceHttpClientImpl.getAccessToken(WxMpServiceHttpClientImpl.java:94)
at me.chanjar.weixin.mp.api.impl.WxMpServiceBaseImpl.executeInternal(WxMpServiceBaseImpl.java:272)
at me.chanjar.weixin.mp.api.impl.WxMpServiceBaseImpl.execute(WxMpServiceBaseImpl.java:239)
at me.chanjar.weixin.mp.api.impl.WxMpServiceBaseImpl.post(WxMpServiceBaseImpl.java:228)
at me.chanjar.weixin.mp.api.impl.WxMpSubscribeMsgServiceImpl.sendSubscribeMessage(WxMpSubscribeMsgServiceImpl.java:39)
at me.chanjar.weixin.mp.demo.WxMpSubscribeMsgServlet.service(WxMpSubscribeMsgServlet.java:50)
分析原因：下面代码只是将配置文件中的配置值装入了wxMpDemoInMemoryConfigStorage中，但父类中的3个Lock并未赋值。
@XStreamAlias("xml")
class WxMpDemoInMemoryConfigStorage extends WxMpInMemoryConfigStorage {
public static WxMpDemoInMemoryConfigStorage fromXml(InputStream is) {
XStream xstream = XStreamInitializer.getInstance();
xstream.processAnnotations(WxMpDemoInMemoryConfigStorage.class);
WxMpDemoInMemoryConfigStorage wxMpDemoInMemoryConfigStorage = (WxMpDemoInMemoryConfigStorage) xstream.fromXML(is);
return wxMpDemoInMemoryConfigStorage;
}
...
}