這個怎么回事呀，錯在哪里了，幫幫忙
type Exception report
message An exception occurred processing JSP page /example8_6.jsp at line 25
description The server encountered an internal error that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: An exception occurred processing JSP page /example8_6.jsp at line 25
22: ?
23: <%
24: String name=fileBean.getFileName();
25: boolean boo=name.endsWith(".jpg");
26: boo=boo||name.endsWith(".gif");
27: if(boo){
28: %> ?<image src="image/<%=name ?%>" width=200 height=200><%=name %></image>
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:574)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:476)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
java.lang.NullPointerException
org.apache.jsp.example8_005f6_jsp._jspService(example8_005f6_jsp.java:142)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:438)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
note The full stack trace of the root cause is available in the Apache Tomcat/8.0.32 logs.
2018-08-04
String?name?=?fileBean.getFileName(); if?(name?==?null){//加上這句就OK了，具體原因，可以查看API ????name?=?""; } boolean?boo?=?name.endsWith(".jpg"); boo?=?boo?||?name.endsWith(".gif");