一个jsp计数器的错误！(怎么回事)

[ganmao]

500 Servlet Exception
java.lang.NumberFormatException: a1
at java.lang.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:1213)
at java.lang.Double.parseDouble(Double.java:201)
at _caculate__jsp._jspService(/4 cat/caculate.jsp:15)
at com.caucho.jsp.JavaPage.service(JavaPage.java:87)
at com.caucho.jsp.JavaPage.subservice(JavaPage.java:81)
at com.caucho.jsp.Page.service(Page.java:474)
at com.caucho.server.http.FilterChainPage.doFilter(FilterChainPage.java:166)
at com.caucho.server.http.Invocation.service(Invocation.java:277)
at com.caucho.server.http.CacheInvocation.service(CacheInvocation.java:129)
at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:216)
at com.caucho.server.http.HttpRequest.handleConnection(HttpRequest.java:158)
at com.caucho.server.TcpConnection.run(TcpConnection.java:140)
at java.lang.Thread.run(Thread.java:536)


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Resin 2.0.2 (built Mon Aug 27 16:52:49 PDT 2001)

[bbshero]

我认为：
你向数据库或者文本文件写的时候，记数的数字没有转换成String格式！
请留下原程序！

[zijianyi]

看报错应该是因为你的变量类型和数据库字段的类型的不匹配问题

[liangxuan1979]

建议你最好在调用放访问量的文本用绝对路径。