运行得好好地，突然就不能运行了，怎么回事？
本帖最后由 dwzjs 于 2015-10-23 12:33 编辑最近，我将我以前用Delphi开发的C/S，用jeecg转成B/S项目，这个功能确实很强大，也写好了几个界面，但是从昨天下午开始，就出问题了。
一、登录界面成英文的了
这倒是次要的，关键是登陆后就报错。
请问是怎么回事，我还能用这个项目吗？
贴上错误的代码：
type Exception reportmessage java.lang.NullPointerExceptiondescription The server encountered an internal error that prevented it from fulfilling this request.exceptionorg.apache.jasper.JasperException: java.lang.NullPointerException org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:549) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:470) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334) javax.servlet.http.HttpServlet.service(HttpServlet.java:728) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238) org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:262) org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1180) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:950) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778) javax.servlet.http.HttpServlet.service(HttpServlet.java:621) javax.servlet.http.HttpServlet.service(HttpServlet.java:728) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) org.jeecgframework.core.aop.GZipFilter.doFilter(GZipFilter.java:49) com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:140) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) org.springframework.orm.hibernate4.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:119) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
root causejava.lang.NullPointerException jodd.util.StringUtil.replace(StringUtil.java:35) org.jeecgframework.tag.core.easyui.BaseTag.doEndTag(BaseTag.java:71) org.apache.jsp.webpage.main.main_jsp._jspx_meth_t_005fbase_005f0(main_jsp.java:501) org.apache.jsp.webpage.main.main_jsp._jspService(main_jsp.java:113) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:728) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334) javax.servlet.http.HttpServlet.service(HttpServlet.java:728) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238) org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:262) org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1180) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:950) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778) javax.servlet.http.HttpServlet.service(HttpServlet.java:621) javax.servlet.http.HttpServlet.service(HttpServlet.java:728) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) org.jeecgframework.core.aop.GZipFilter.doFilter(GZipFilter.java:49) com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:140) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) org.springframework.orm.hibernate4.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:119) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.47 logs.
我记得有个地方可以调换语言的~ 但是在之前一直是中文的，这倒无所谓了，最主要的是登录之后报错。 现在又发现个问题，我重新搭建了一个jeecg，发现用mysql正常，用jstd，sql server，就报错，错误跟上面一样，是数据库的问题吗？ 找到原因了，自己解决了。
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