Exception Handling is the process to handle the runtime errors. There may occur exception any time in your web application. So handling exceptions is a safer side for the web developer. In JSP, there are two ways to perform exception handling:. In this case, you must define and create a page to handle the exceptions, as in the error.
The pages where may occur exception, define the errorPage attribute of page directive, as in the process. This approach is better because you don't need to specify the errorPage attribute in each jsp page. Specifying the single entry in the web. In this case, either specify exception-type or error-code with the location element. If you want to handle all the exception, you will have to specify the java.
Exception in the exception-type element. Let's see the simple example:. This approach is better if you want to handle any exception. You will find references for it in Spring Framework Reference Manual - It it more or less like a global ExceptionHandler , but it will act even before of after controller action.
Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. How I can catch exception in JSP files? Ask Question. Asked 6 years, 2 months ago. Active 3 years, 7 months ago. Viewed 4k times. I used ExceptionHandler for catch exception in controllers. Update: The best solution is put in web. Prints the result of toString along with the stack trace to System. Returns an array containing each element on the stack trace.
The element at index 0 represents the top of the call stack, and the last element in the array represents the method at the bottom of the call stack. Fills the stack trace of this Throwable object with the current stack trace, adding to any previous information in the stack trace. Whenever the page throws an exception, the JSP container automatically invokes the error page. Following is an example to specifiy an error page for a main.
This directive causes the JSP compiler to generate the exception instance variable. If you want to handle errors within the same page and want to take some action instead of firing an error page, you can make use of the try This error is not easy to handle, it requires a long work and deep analysis of the situation. You can create your own checked exceptions. For this, your exception class needs to extend the Exception class or unchecked exception by extending RuntimeException class.
In the JSP, there are two technics to handle exceptions. Firstly, we can use the exception implicit object. Another way of exception handling is to use a try-catch block inside a scriptlet. There is a possibility in JSP to specify the exception handling page with the use of the Page directive and its errorPage attribute.
In the case of any exception, in the main JSP page, the control will be switched to the page mentioned in the errorPage attribute of the Page directive. We will create the errorpage. We will use the exception implicit object. And for this, the handler page should have isErrorPage flag set to true. In another way, we would not be able to use the exception implicit object. Because of this reason we have set the isErrorPage as true for errorpage. Here is the code of our page test.
Here is test. When issue occured the client was redirected to error page exception. We are going to use an Exception object. Throwable getCause — method returns the reason that caused this throwable or null for a nonexistent or unknown reason. String getLocalizedMessage — method creates a description of this throwable that is localized.
StackTraceElement[] getStackTrace — method provides access programmaticly to the information that we can print with method printStackTrace.
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