Question

java.lang.IllegalArgumentException 用netbeans编写，然后在一个增加信息的页面点击提交或者返回都出现

java.lang.IllegalArgumentException
java.sql.Date.valueOf(Date.java:98)
servelet.Addservlet.processRequest(Addservlet.java:42)
servelet.Addservlet.doGet(Addservlet.java:58)
javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)

然后再列表内点击查询之后出现下面这种乱码
exception
org.apache.jasper.JasperException
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:500)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:413)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:308)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:259)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)

root cause
java.lang.NullPointerException
org.apache.jsp.detail_jsp._jspService(detail_jsp.java:75)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:371)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:308)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:259)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)

对方面比较白QAQ想知道具体是指哪里的问题

Answer 1

代码贴出来看看，异常是从转换成java.sql.Date时抛出的