HTTP stauts error

[priyanka_t]

Hey guys, how to fix this error


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
org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:372)
org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet .java:810)


root cause

java.lang.NullPointerException
org.apache.jsp.web.jsp.familyhistory_jsp._jspServi ce(familyhistory_jsp.java:144)
org.apache.jasper.runtime.HttpJspBase.service(Http JspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet .java:810)
org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet .java:810)


note The full stack trace of the root cause is available in the Apache Tomcat/5.0.26 logs.

[wsaryada]

Can you post you familyhistory.jsp?

[felixtfelix]

It is saying NullPointerException. Means that you are assiging or using any object which is having a null value.
You can fix it in two ways
1. You have to put consecutive System.out.println() in your jsps whereever you suspect the error. then you can see the console upto what statements printed. Then you can find the statement which cause error.
2. Go to the work\Catalina\localhost\<application_name> of your tomcate installation find the file familyhistory_jsp inside somewhere of it. Then go to the line number 144 as per your stack. you can get that statement which cause errot. This will require aditional knowledge of sevlet and compilation of jsp into servelet as well.

[priyanka_t]

thnx alot, i have fixed the problem