这是什么错误啊 求大神解决！

[rjoannew]

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: For input string: ""
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.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1069)
org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:455)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:279)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
com.lbs.leaf.sysmanage.webcontroller.OperateLogFilter.doFilter(OperateLogFilter.java:87)
com.lbs.leaf.sysmanage.webcontroller.SafetyFilter.doFilter(SafetyFilter.java:239)
com.lbs.leaf.persistence.HibernateFilter.doFilter(Unknown Source)
com.lbs.leaf.webcontroller.DisableHttpCacheFilter.doFilter(Unknown Source)
com.lbs.leaf.webcontroller.EncodingFilter.doFilter(Unknown Source)


root cause

java.lang.NumberFormatException: For input string: ""
java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
java.lang.Integer.parseInt(Integer.java:468)
java.lang.Integer.parseInt(Integer.java:497)
org.apache.jsp.topFunc_jsp._jspService(topFunc_jsp.java:92)
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.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1069)
org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:455)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:279)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
com.lbs.leaf.sysmanage.webcontroller.OperateLogFilter.doFilter(OperateLogFilter.java:87)
com.lbs.leaf.sysmanage.webcontroller.SafetyFilter.doFilter(SafetyFilter.java:239)
com.lbs.leaf.persistence.HibernateFilter.doFilter(Unknown Source)
com.lbs.leaf.webcontroller.DisableHttpCacheFilter.doFilter(Unknown Source)
com.lbs.leaf.webcontroller.EncodingFilter.doFilter(Unknown Source)


note The full stack trace of the root cause is available in the Apache Tomcat/5.5.36 logs.


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

Apache Tomcat/5.5.36

[跳蚤图]

发生错误的背景是什么啊？

[rjoannew]

HTTP Status 500 - 还要什么背景？

[ZHOU西口]

转换一个非数值型字符串为数值，貌似是空啊

[rjoannew]

是哪段代码的错误？

[划水打酱油的围观党]

你是把int转string型？

[划水打酱油的围观党]

饿，说反了，你是把string转为int型？

[dgcxyc]

你获得的string是空啊 不能完成你要做的操作。 你得到了string后，先判断null或者是""，然后你再去操作

[一梭子码农]

字符串为空时不可以进行类型转换.

[General-M]

org.apache.jasper.JasperException: For input string: "" 要的是integer你传了string，，，作下非空校验，，

[是小王同学啊~]

你在jsp页面获取到的值是空字符串，然后你对那个空的字符串进行了转换，所以出现了字符串转换异常，你可以在转换之前做下判断，为空的则不进行转换就好了。

[猪公公]

引用 9 楼 vsddvsd 的回复:

org.apache.jasper.JasperException: For input string: "" 要的是integer你传了string，，，作下非空校验，，

应该就是这个问题

[jinoon]

进行类型转换的时候，出现了空字符串

[小帅庾]

说的是类型转换失败！定义的是 Integer 类型 你填写的是String类型的 并且是一个空的字符串！

[我自横刀香甜笑]

你再转数字的地方看看得到的是什么值。。。估计是空或者非数字的。

[Man_Jiang]

类型转换那块出错了

[whos2002110]

你在控制层的方法参数里面用了基本数据类型int,改成Integer就没问题了

[Intboy]

java.lang.NumberFormatException: For input string: ""
java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
java.lang.Integer.parseInt(Integer.java:468)

空字符串转数字异常了