今天写代码的时候碰见了这个错误(springmvc+mybatis+mysql)
javax.servlet.ServletException: Servlet.init() for servlet springmvc_rest threw exception
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668)
org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:283)
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2463)
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2452)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Thread.java:744)
root cause
后来找到错误是因为我这里的一些方法没有实现
@RequestMapping("/addPermissionSubmit")
public String addPermissionSubmit(Model model, HttpServletRequest request,
@ModelAttribute("permission") PermissionCustom permissionCustom)
throws Exception {
if (permissionService.queryPermissionCustom(permissionCustom) == 0
|| permissionCustom == null) {
return "permission/addPermission";
}
return "redirect:permission/queryPermission";
}
把它/**/起来,错误就解决了
网上说主要是下面几个原因
1、使用了未初始化的变量(虽然已经声明)
2、使用了未初始化的对象(虽然已经声明)
3、使用了关键字或已存在的类名作变量对象方法或类名。