简单问题，大家帮忙看一下

Question

try
      {
          age = Integer.parseInt(str_age);
      }
      catch(Exception e)
      {
          response.sendRedirect("age-exception.html");
      }
      if(age<20) response.sendRedirect("rejected.html");

Answer 1

问题恐怕不是出在 Integer.parse() 上，可能是出在前面解析 Request 上或者其它地方。
自己在找找吧。

Answer 2

后面的错误提示是下面的java.lang.IllegalStateException
org.apache.coyote.tomcat5.CoyoteResponseFacade.sendRedirect(CoyoteResponseFacade.java:352)
javax.servlet.http.HttpServletResponseWrapper.sendRedirect(HttpServletResponseWrapper.java:125)
org.apache.jsp.newuser_jsp._jspService(newuser_jsp.java:62)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:362)

Answer 3

按正常流程走是对的，就是输入错误时报错，会是request解析的问题？