{"id":2612,"date":"2017-09-02T07:29:56","date_gmt":"2017-09-02T07:29:56","guid":{"rendered":"http:\/\/webartdevelopers.com\/?p=2612"},"modified":"2017-09-02T07:30:18","modified_gmt":"2017-09-02T07:30:18","slug":"how-to-perform-exception-handling-in-jsp","status":"publish","type":"post","link":"https:\/\/webartdevelopers.com\/blog\/how-to-perform-exception-handling-in-jsp\/","title":{"rendered":"How to Perform Exception Handling in JSP"},"content":{"rendered":"

In this tutorial how to perform Exception Handling in JSP is shown.
\nThere are 3 ways to Handle Exception in JSP:<\/p>\n

    \n
  1. Through isError page and Exception object<\/li>\n
  2. Through Try and Catch block<\/li>\n
  3. Through web.xml file<\/li>\n<\/ol>\n

    Code:<\/p>\n

    index.html<\/p>\n

    <html>
    \n<head>
    \n<title>Exception Handling<\/title>
    \n<meta charset=”UTF-8″>
    \n<meta name=”viewport” content=”width=device-width, initial-scale=1.0″>
    \n<\/head>
    \n<body>
    \n<form action=”process.jsp” method=”POST”>
    \nValue1: <input type=”text” name=”val1″><br>
    \nValue2: <input type=”text” name=”val2″><br>
    \n<input type=”submit” value=”Divide”>
    \n<\/form>
    \n<\/body>
    \n<\/html><\/p>\n

    1st method:<\/p>\n

    process.jsp<\/p>\n

    <%@page contentType=”text\/html” pageEncoding=”UTF-8″%>
    \n<%@page errorPage=”myerrorpage.jsp” %>
    \n<!DOCTYPE html>
    \n<html>
    \n<head>
    \n<meta http-equiv=”Content-Type” content=”text\/html; charset=UTF-8″>
    \n<title>Error Page<\/title>
    \n<\/head>
    \n<body>
    \n<%
    \nString val1=request.getParameter(“val1”);
    \nString val2=request.getParameter(“val2”);
    \nint a=Integer.parseInt(val1);
    \nint b=Integer.parseInt(val2);
    \nint ans=a\/b;
    \nout.println(“Answer= “+ans);
    \n%>
    \n<\/body>
    \n<\/html><\/p>\n

    myerrorpage.jsp<\/p>\n

    <%@page contentType=”text\/html” pageEncoding=”UTF-8″%>
    \n<%@page isErrorPage=”true”%>
    \n<!DOCTYPE html>
    \n<html>
    \n<head>
    \n<meta http-equiv=”Content-Type” content=”text\/html; charset=UTF-8″>
    \n<title>Error Page<\/title>
    \n<\/head>
    \n<body>
    \n<h1>Sorry exception occurred<\/h1>
    \nException is <%=exception%>
    \n<\/body>
    \n<\/html><\/p>\n

    2nd method:<\/p>\n

    process.jsp<\/p>\n

    <%@page contentType=”text\/html” pageEncoding=”UTF-8″%>
    \n<!DOCTYPE html>
    \n<html>
    \n<head>
    \n<meta http-equiv=”Content-Type” content=”text\/html; charset=UTF-8″>
    \n<title>Error Page<\/title>
    \n<\/head>
    \n<body>
    \n<%
    \ntry {
    \nString val1=request.getParameter(“val1”);
    \nString val2=request.getParameter(“val2”);
    \nint a=Integer.parseInt(val1);
    \nint b=Integer.parseInt(val2);
    \nint ans=a\/b;
    \nout.println(“Answer= “+ans);
    \n}
    \ncatch(Exception e)
    \n{
    \nout.println(“Exception is: “+e);
    \n}
    \n%>
    \n<\/body>
    \n<\/html><\/p>\n

    3rd method<\/p>\n

    process.jsp<\/p>\n

    <%@page contentType=”text\/html” pageEncoding=”UTF-8″%>
    \n<!DOCTYPE html>
    \n<html>
    \n<head>
    \n<meta http-equiv=”Content-Type” content=”text\/html; charset=UTF-8″>
    \n<title>Error Page<\/title>
    \n<\/head>
    \n<body>
    \n<%
    \nString val1=request.getParameter(“val1”);
    \nString val2=request.getParameter(“val2”);
    \nint a=Integer.parseInt(val1);
    \nint b=Integer.parseInt(val2);
    \nint ans=a\/b;
    \nout.println(“Answer= “+ans);
    \n%>
    \n<\/body>
    \n<\/html><\/p>\n

    web.xml<\/p>\n

    <?xml version=”1.0″ encoding=”UTF-8″?>
    \n<web-app version=”3.1″ xmlns=”http:\/\/xmlns.jcp.org\/xml\/ns\/javaee” xmlns:xsi=”http:\/\/www.w3.org\/2001\/XMLSchema-instance” xsi:schemaLocation=”http:\/\/xmlns.jcp.org\/xml\/ns\/javaee http:\/\/xmlns.jcp.org\/xml\/ns\/javaee\/web-app_3_1.xsd”>
    \n<session-config>
    \n<session-timeout>
    \n30
    \n<\/session-timeout>
    \n<\/session-config>
    \n<–1st method–>
    \n<error-page>
    \n<exception-type>java.lang.Exception<\/exception-type>
    \n<location>\/myerrorpage.jsp<\/location>
    \n<\/error-page>
    \n<–2nd method–>
    \n<error-page>
    \n<error-code>500<\/error-code>
    \n<location>\/myerrorpage.jsp<\/location>
    \n<\/error-page>
    \n<\/web-app><\/p>\n

    https:\/\/youtu.be\/4Sl9R9K0uoE<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"In this tutorial how to perform Exception Handling in JSP is shown. There are 3 ways to Handle Exception in JSP: Through isError page and Exception object Through Try and Catch block Through web.xml file Code: index.html <html> <head> <title>Exception Handling<\/title> <meta charset=”UTF-8″> <meta name=”viewport” content=”width=device-width, initial-scale=1.0″> <\/head> <body> <form action=”process.jsp” method=”POST”> Value1: <input type=”text” name=”val1″><br> Value2: <input type=”text” name=”val2″><br> <input type=”submit” value=”Divide”> <\/form> <\/body> <\/html> 1st method: process.jsp <%@page contentType=”text\/html” pageEncoding=”UTF-8″%> <%@page errorPage=”myerrorpage.jsp” %> <!DOCTYPE html> <html> <head> <meta http-equiv=”Content-Type” content=”text\/html; charset=UTF-8″> <title>Error Page<\/title> <\/head> <body> <% String val1=request.getParameter(“val1”); String val2=request.getParameter(“val2”); int a=Integer.parseInt(val1); int b=Integer.parseInt(val2); int ans=a\/b; out.println(“Answer= “+ans); %> <\/body> <\/html> myerrorpage.jsp <%@page contentType=”text\/html” pageEncoding=”UTF-8″%> <%@page isErrorPage=”true”%> <!DOCTYPE html> <html> <head> <meta http-equiv=”Content-Type” content=”text\/html; charset=UTF-8″> <title>Error Page<\/title> <\/head> ","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[123],"tags":[125,150,151,124,145],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/webartdevelopers.com\/blog\/wp-json\/wp\/v2\/posts\/2612"}],"collection":[{"href":"https:\/\/webartdevelopers.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/webartdevelopers.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/webartdevelopers.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/webartdevelopers.com\/blog\/wp-json\/wp\/v2\/comments?post=2612"}],"version-history":[{"count":2,"href":"https:\/\/webartdevelopers.com\/blog\/wp-json\/wp\/v2\/posts\/2612\/revisions"}],"predecessor-version":[{"id":2614,"href":"https:\/\/webartdevelopers.com\/blog\/wp-json\/wp\/v2\/posts\/2612\/revisions\/2614"}],"wp:attachment":[{"href":"https:\/\/webartdevelopers.com\/blog\/wp-json\/wp\/v2\/media?parent=2612"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/webartdevelopers.com\/blog\/wp-json\/wp\/v2\/categories?post=2612"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/webartdevelopers.com\/blog\/wp-json\/wp\/v2\/tags?post=2612"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}