Question

jsp中出现的500错误是怎么回事？？

我的提示是这样的：
HTTP Status 500 -

--------------------------------------------------------------------------------

type Exception report

message

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 /currExchangeBean.jsp at line 61

58: <jsp:setProperty name="calc" property="amt" value="<%=amnt%>"/>
59: <p ><font >缁撴灉: </font>
60: <%
61: double res=calc.calculate();
62: out.println(res);
63: %>
64: <p align="center">

Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:505)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:416)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

root cause

java.lang.ArrayIndexOutOfBoundsException: 5
sas.Calc.calculate(Calc.java:61)
org.apache.jsp.currExchangeBean_jsp._jspService(currExchangeBean_jsp.java:148)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

note The full stack trace of the root cause is available in the Apache Tomcat/6.0.18 logs.

声明一下，这个是执行汇率转换的代码是出现的错误，哪位高手解决一下？？？

Answer 1

1、500---内部服务器错误，说明是代码有错误！
2、root cause
java.lang.ArrayIndexOutOfBoundsException: 5
是数组越界异常，看看你定义的数组有没有问题
3、sas.Calc.calculate(Calc.java:61) ---看看你的这个文件有问题吗！
4、org.apache.jsp.currExchangeBean_jsp._jspService(currExchangeBean_jsp.java:148)----如果用的是tomcat，在态拦祥tomcat的work目录下有帆搏由jsp转成java文件，文件名currExchangeBean_jsp.java，看看148行
5、下次最好附上代码，这样才能知道具体是哪有问题呀！如衡镇果代码太长，就捡你认为最关键的代码就ok了！