Question

严重: Servlet.service() for servlet jsp threw exception 求解

java.lang.StringIndexOutOfBoundsException: String index out of range: -1

at java.lang.String.substring(String.java:1938)
at java.lang.String.substring(String.java:1905)
at com.fredck.FCKeditor.FCKeditor.retrieveBrowserVersion(FCKeditor.java:263)
at com.fredck.FCKeditor.FCKeditor.isCompatible(FCKeditor.java:251)
at com.fredck.FCKeditor.FCKeditor.create(FCKeditor.java:292)
at com.fredck.FCKeditor.tags.FCKeditorTag.doAfterBody(FCKeditorTag.java:689)
at org.apache.jsp.admin.knowlege.addKnowlege_jsp._jspx_meth_FCK_005feditor_005f0(addKnowlege_jsp.java:427)
at org.apache.jsp.admin.knowlege.addKnowlege_jsp._jspService(addKnowlege_jsp.java:296)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
Chain.java:235)

。。。。

Answer 1

你看看你这个类FCKeditor.java的263。String字符串在截取（substring）的时候越界了。仔细查查，String的长度和substring里面的参数长度。

追问

那个是引入的jar不会有问题
一点击进入这个页面的连接出现的问题

追答

不清楚你怎么在页面调用的这个类库，没传参数吗，查看下你的tomcat目录下的work目录下，搜搜这个addKnowlege_jsp.java类的296行看看。顺便能贴下你的jsp页面出来看看吗

Answer 2

字符串长度不匹配 越界了 请贴出代码！

追问