PersonDao Mappper Proxy

[AhYi8]

新项目启动报这个异常：

java.lang.NullPointerException: null
	at org.nebula.contrib.ngbatis.proxy.MapperProxy.invoke(MapperProxy.java:73) ~[ngbatis-1.1.3.jar:1.1.3]
	at com.ayi.ngbatis.dao.PersonDao$Proxy.select1(Unknown Source) ~[na:na]
	at com.ayi.ngbatis.service.impl.PersonServiceImpl.select1(PersonServiceImpl.java:79) ~[classes/:na]
	at com.ayi.ngbatis.controller.PersonController.select1(PersonController.java:18) ~[classes/:na]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_321]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_321]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_321]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_321]
	......

启动类

项目结构

Dao 类

ServiceImp 类

[AhYi8]

哪位大佬知道为啥，刚学，踩的坑太多了

[AhYi8]

这是Mapper.xml 文件

[CorvusYe]

新项目启动报这个异常：

java.lang.NullPointerException: null
	at org.nebula.contrib.ngbatis.proxy.MapperProxy.invoke(MapperProxy.java:73) ~[ngbatis-1.1.3.jar:1.1.3]
	at com.ayi.ngbatis.dao.PersonDao$Proxy.select1(Unknown Source) ~[na:na]
	at com.ayi.ngbatis.service.impl.PersonServiceImpl.select1(PersonServiceImpl.java:79) ~[classes/:na]
	at com.ayi.ngbatis.controller.PersonController.select1(PersonController.java:18) ~[classes/:na]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_321]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_321]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_321]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_321]
	......

启动类

这里的报空是因为基本包的内置组件没有扫描到，可以改成 scanBasePackages = { "org.nebula.contrib.ngbatis", "com.ayi.ngbatis" }

Dao 类

这里的@Component可以不需要，直接去掉就可以，扫描的发现是通过 xml 的 namespace 完成的，加了这个注解会形成二次代理，从而导致报错