Update xml sql in mybatis + spring boot project error and will not take effect

[wallfacers]

Environmental Information:
java version: jdk1.8.0_181
dcevm:jdk8u181+2
HotswapAgent:1.4.2-SNAPSHOT

VM options:
-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=5005
-XXaltjvm=dcevm
-javaagent:D:\develop\java\source\HotswapAgent\hotswap-agent\target\hotswap-agent.jar=propertiesFilePath=D:\downloads\hotswap-agent.properties

operation:
Change what the arrow executes 1 to 2, and then perform hot deployment

Error message;
HOTSWAP AGENT: 00:21:00.847 ERROR (org.hotswap.agent.plugin.spring.reload.SpringBeanReload) - Failed to invoke PostProcessorRegistrationDelegate
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.hotswap.agent.plugin.spring.reload.SpringBeanReload.invokePostProcessorRegistrationDelegate(SpringBeanReload.java:666)
at org.hotswap.agent.plugin.spring.reload.SpringBeanReload.invokeBeanFactoryPostProcessors(SpringBeanReload.java:646)
at org.hotswap.agent.plugin.spring.reload.SpringBeanReload.doReload(SpringBeanReload.java:296)
at org.hotswap.agent.plugin.spring.reload.SpringBeanReload.reload(SpringBeanReload.java:259)
at org.hotswap.agent.plugin.spring.reload.SpringChangedAgent.doReload(SpringChangedAgent.java:204)
at org.hotswap.agent.plugin.spring.reload.SpringChangedAgent.reloadAll(SpringChangedAgent.java:192)
at org.hotswap.agent.plugin.spring.reload.SpringChangedAgent.reload(SpringChangedAgent.java:143)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.hotswap.agent.plugin.spring.reload.SpringChangedReloadCommand.executeCommand(SpringChangedReloadCommand.java:54)
at org.hotswap.agent.command.impl.CommandExecutor.run(CommandExecutor.java:43)
Caused by: java.lang.NullPointerException
at org.mybatis.spring.mapper.MapperScannerConfigurer.processPropertyPlaceHolders(MapperScannerConfigurer.java:386)
at org.mybatis.spring.mapper.MapperScannerConfigurer.postProcessBeanDefinitionRegistry(MapperScannerConfigurer.java:354)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:311)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:142)
... 17 more

HOTSWAP AGENT: 00:21:00.847 INFO (org.hotswap.agent.plugin.spring.reload.SpringBeanReload) - ##### [1th] finish reloading 'org.springframework.beans.factory.support.DefaultListableBeanFactory@5ef6fd7f', it cost 7ms
HOTSWAP AGENT: 00:21:00.848 ERROR (org.hotswap.agent.plugin.spring.reload.XmlsChangedCommand) - Error invoking method
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.hotswap.agent.plugin.spring.reload.SpringChangedReloadCommand.executeCommand(SpringChangedReloadCommand.java:54)
at org.hotswap.agent.command.impl.CommandExecutor.run(CommandExecutor.java:43)
Caused by: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at org.hotswap.agent.plugin.spring.reload.SpringBeanReload.invokeBeanFactoryPostProcessors(SpringBeanReload.java:655)
at org.hotswap.agent.plugin.spring.reload.SpringBeanReload.doReload(SpringBeanReload.java:296)
at org.hotswap.agent.plugin.spring.reload.SpringBeanReload.reload(SpringBeanReload.java:259)
at org.hotswap.agent.plugin.spring.reload.SpringChangedAgent.doReload(SpringChangedAgent.java:204)
at org.hotswap.agent.plugin.spring.reload.SpringChangedAgent.reloadAll(SpringChangedAgent.java:192)
at org.hotswap.agent.plugin.spring.reload.SpringChangedAgent.reload(SpringChangedAgent.java:143)
... 6 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.hotswap.agent.plugin.spring.reload.SpringBeanReload.invokePostProcessorRegistrationDelegate(SpringBeanReload.java:666)
at org.hotswap.agent.plugin.spring.reload.SpringBeanReload.invokeBeanFactoryPostProcessors(SpringBeanReload.java:646)
... 11 more
Caused by: java.lang.NullPointerException
at org.mybatis.spring.mapper.MapperScannerConfigurer.processPropertyPlaceHolders(MapperScannerConfigurer.java:386)
at org.mybatis.spring.mapper.MapperScannerConfigurer.postProcessBeanDefinitionRegistry(MapperScannerConfigurer.java:354)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:311)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:142)
... 17 more

Error cause：
Org. Mybatis. Spring. Mapper. MapperScannerConfigurer creates a temporary DefaultListableBeanFactory for placeholder substitution, And org. Hotswap. Agent. The plugin. Spring. Reload. SpringChangedAgent. SpringChangeAgents cache the temporary DefaultListableBeanFactory, in file change happened, Triggering a reload will cause the newly created bean not to follow the normal spring initialization process

Another problem area:
A configuration should be recreated before calling the buildSqlSessionFactory method of the sqlSessionFactoryBean spring bean. Otherwise, the xml file found loaded in the buildSqlSessionFactory method implementation will not be loaded again

Test case:
https://github.com/wallfacers/hotswap-agent-demo

Related issue:
#538

[wallfacers]

@skybber help ~

[homejim]

https://github.com/homejim/HotswapAgent/releases/tag/1.4.2.1-SNAPSHOT

This package works correctly and resolves the issue.

[skybber]

fixed by @homejim in https://github.com/homejim/HotswapAgent/releases/tag/1.4.2.1-SNAPSHOT