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有个严重bug

springLogin/src/main/java/com/example/controller/LoginController.java
你在这里面操作leveldb, 每次请求上来都会打开关闭一次db。当多个请求同时上来时,会有多个线程同时打开leveldb,但是leveldb同时只允许一个线程打开。所以其它线程会报错。
这里正确的做法是当服务器启动打开db,服务器关闭时close掉。
你可以写个spring的listener监听服务器的启动和关闭。你可以搜索下spring的ApplicationListener用法

把LoginProject里的eclipse的配置文件删除掉

项目里带里这些.setting .classpath .project,我导入工程的时候会报错。配置个.gitignore文件就好了。参考:

http://www.pfeng.org/archives/840

.gitignore只能忽略那些原来没有被track的文件,如果某些文件已经被纳入了版本管理中,则修改.gitignore是无效的。那么解决方法就是先把本地缓存删除(改变成未track状态),然后再提交

现在基本上都使用注解的handlerMapping,使用SimpleMappingExceptionResolver的较少

springmvc默认的handlerMapping现在是这个:
org.springframework.web.servlet.HandlerMapping=org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping,
org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping

你可以看下DispatcherServlet.property里的配置:

# Default implementation classes for DispatcherServlet's strategy interfaces.
# Used as fallback when no matching beans are found in the DispatcherServlet context.
# Not meant to be customized by application developers.

org.springframework.web.servlet.LocaleResolver=org.springframework.web.servlet.i18n.AcceptHeaderLocaleResolver

org.springframework.web.servlet.ThemeResolver=org.springframework.web.servlet.theme.FixedThemeResolver

org.springframework.web.servlet.HandlerMapping=org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping,\
    org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping

org.springframework.web.servlet.HandlerAdapter=org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter,\
    org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter,\
    org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter

org.springframework.web.servlet.HandlerExceptionResolver=org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerExceptionResolver,\
    org.springframework.web.servlet.mvc.annotation.ResponseStatusExceptionResolver,\
    org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver

org.springframework.web.servlet.RequestToViewNameTranslator=org.springframework.web.servlet.view.DefaultRequestToViewNameTranslator

org.springframework.web.servlet.ViewResolver=org.springframework.web.servlet.view.InternalResourceViewResolver

org.springframework.web.servlet.FlashMapManager=org.springframework.web.servlet.support.SessionFlashMapManager

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