堆栈信息: 2014-6-17 10:33:58 org.apache.tomcat.util.digester.Digester endElement 严重: End event threw exception java.lang.IllegalArgumentException: Can't convert argument: null at org.apache.tomcat.util.IntrospectionUtils.convert(IntrospectionUtils.java:1…

问题 我修改了前一个项目的名称.重新启动该项目至tomcat,报错:Java.lang.IllegalArgumentException: Can't convert argument: null 因为Eclipse在修改项目名时候,自动更新部署了web.xml文件 并且重新生成了xml文件的头部声明. 大概是这样,增加了javaee:的标签开头: <web-app xmlns:javaee="http://java.sun.com/xml/ns/javaee" xmlns:we…

出现这样的异常:: 这是由于eclipse在修改项目名的时候,eclipse自动更新部署了web.xml文件 并且重新生成了xml文件的头部声明. 新增了java的命名把这个javaee去掉就可以了.一般情况下他会修改servlet的配置 修改项目后之后的web.xml仔细观察<init-param>标签下的子标签是否多了一个javaee你把这个删除掉就可以了(即javaee替换为空) web.xml <filter> <filter-name>CharacterEnc…

错误: 严重: Servlet.service() for servlet jsp threw exception java.lang.IllegalStateException: getOutputStream() has already been called 输出验证码的类: package com.jxc.util; import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt…

严重: Servlet.service() for servlet jsp threw exception    java.lang.IllegalStateException: getOutputStream() has already been called for this response .... 在网上搜索之后的解决方法是: 在生成验证码的jsp文件末尾添加两句话 out.clear();out = pageContext.pushBody(); ==================…

这个为什么报错啊~~ at com.hsp.basic.BasicService.executeQuery(BasicService.java:33) 这个对应的语句是   Query query =this.sessionFactory.getCurrentSession().createQuery(hql); Sep 24, 2017 11:39:50 PM org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.se…

错误付现: 严重: Servlet.service() for servlet UserServlet threw exceptionjava.lang.NullPointerException at com.liuyang.servlet.UserServlet.doGet(UserServlet.java:17) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.Http…

1 详细信息 User class threw exception: java.lang.IllegalStateException: Cannot call methods on a stopped SparkContext. This stopped SparkContext was created at:   org.apache.spark.SparkContext.<init>(SparkContext.scala:76) com.wm.bigdata.spark.etl.RentO…

五月 04, 2018 11:53:24 上午 org.apache.catalina.core.ApplicationDispatcher invoke 严重: Servlet.service() for servlet [jsp] threw exception java.lang.NullPointerException at org.apache.jsp.tag.web.partyRoleId_tag.doTag(partyRoleId_tag.java:125) at org.apac…

Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.mongodb.MongoClient]: Factory method 'mongo' threw exception; nested exception is java.lang.IllegalArgumentException: clusterListener can not be null at org.s…