我的申请有问题。
它通过Crawler4j从网站获取数据，需要创建一些目录和文件来操作数据，但是tomcat不给权限。答案是这样的：
无法创建此文件夹：/data/crawl/root
如何配置 tomcat 以允许外部 jar 在我的应用程序中创建目录和文件？
源代码可以在：https ://github.com/MarcelorjOliveira/CrawlerSpring
完整的堆栈跟踪在这里
堆栈跟踪：org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:568) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:455) org.apache.jasper.servlet.JspServlet.serviceJspFile( JspServlet.java:405) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:349) javax.servlet.http.HttpServlet.service(HttpServlet.java:725) org.apache.tomcat.websocket.server。 WsFilter.doFilter(WsFilter.java:52) org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)
根本原因
org.springframework.web.util.NestedServletException：请求处理失败；嵌套异常是 java.lang.Exception：无法创建此文件夹：/data/crawl/root org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:656) org.springframework.web.servlet.FrameworkServlet。 doGet(FrameworkServlet.java:549) javax.servlet.http.HttpServlet.service(HttpServlet.java:618) javax.servlet.http.HttpServlet.service(HttpServlet.java:725) org.apache.tomcat.websocket.server。 WsFilter.doFilter(WsFilter.java:52) org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393) org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:738) org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:708) org.apache.jsp.index_jsp。
根本原因
java.lang.Exception：无法创建此文件夹：/data/crawl/root edu.uci.ics.crawler4j.crawler.CrawlController.(CrawlController.java:83) br.com.crawlerspring.controller.MainController.initCrawler( MainController.java:52) br.com.crawlerspring.controller.MainController.main(MainController.java:66) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) sun .reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:606) org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176 ) org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:426) org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:414) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790) org.springframework.web。 servlet.DispatcherServlet.doService(DispatcherServlet.java:719) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549) javax. servlet.http.HttpServlet.service(HttpServlet.java:618) javax.servlet.http.HttpServlet.service(HttpServlet.java:725) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393) org.apache.jasper.runtime.PageContextImpl。doForward(PageContextImpl.java:738) org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:708) org.apache.jsp.index_jsp._jspService(index_jsp.java:65) org.apache.jasper.runtime。 HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:725) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432) org.apache.jasper。 servlet.JspServlet.serviceJspFile(JspServlet.java:405) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:349) javax.servlet.http.HttpServlet.service(HttpServlet.java:725) org.apache。 tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)forward(PageContextImpl.java:708) org.apache.jsp.index_jsp._jspService(index_jsp.java:65) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet。服务（HttpServlet.java:725）org.apache.jasper.servlet.JspServletWrapper.service（JspServletWrapper.java:432）org.apache.jasper.servlet.JspServlet.serviceJspFile（JspServlet.java:405）org.apache.jasper。 servlet.JspServlet.service(JspServlet.java:349) javax.servlet.http.HttpServlet.service(HttpServlet.java:725) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org. netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)forward(PageContextImpl.java:708) org.apache.jsp.index_jsp._jspService(index_jsp.java:65) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet。服务（HttpServlet.java:725）org.apache.jasper.servlet.JspServletWrapper.service（JspServletWrapper.java:432）org.apache.jasper.servlet.JspServlet.serviceJspFile（JspServlet.java:405）org.apache.jasper。 servlet.JspServlet.service(JspServlet.java:349) javax.servlet.http.HttpServlet.service(HttpServlet.java:725) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org. netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)http.HttpServlet.service(HttpServlet.java:725) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:405) org. apache.jasper.servlet.JspServlet.service(JspServlet.java:349) javax.servlet.http.HttpServlet.service(HttpServlet.java:725) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java: 52) org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)http.HttpServlet.service(HttpServlet.java:725) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:405) org. apache.jasper.servlet.JspServlet.service(JspServlet.java:349) javax.servlet.http.HttpServlet.service(HttpServlet.java:725) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java: 52) org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)
谢谢大家。