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I work with a front-end developer who writes JSP files. We have a form that is working correctly, except validation/binding/processing errors can't seem to be displayed with Spring's <form:errors/> tag.
I've confirmed that the error is being set, and what is apparently the correct path for the errors. Supposedly <form:errors path="*" /> should render them all, regardless of path, but it shows nothing.
Do I need to get into the tag library source to deduce what's going wrong?
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The Simple Steps Specify a single URL /errors in web. xml that maps to a method that would handle the error whenever an error is generated. Create a Controller called ErrorController with a mapping /errors. Figure out the HTTP error code at runtime and display a message according to the HTTP error code.
The Spring MVC form tags are the configurable and reusable building blocks for a web page. These tags provide JSP, an easy way to develop, read and maintain. The Spring MVC form tags can be seen as data binding-aware tags that can automatically set data to Java object/bean and also retrieve from it.
The default handler is based on the @Controller and @RequestMapping annotations, offering a wide range of flexible handling methods. With the introduction of Spring 3.0, the @Controller mechanism also allows you to create RESTful Web sites and applications, through the @PathVariable annotation and other features.
The view is a component of MVC architecture that is used to return a user interface output to the user in response to the user request. A View page can be any HTML or JSP file. Spring MVC internally uses a view resolver to fetch the requested view to the user.
2 things I discovered.
1) make sure you specify the name of the form-bean / command object in the form tag
<form:form method="post" enctype="multipart/form-data" commandName="salesOrder">
2) make sure you name your form-bean / command object by its class name. In the example above my class is com.abc.xyz.SalesOrder. If I call it "so" or "order" in the model then it will not show the errors.
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Simple answer: <form:errors/> must be within a <form:form/> element in order to bind to the model's "command" object.
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