<f:ajax event="click" render="errormessage" onerror="handlemyajaxerror"/>
Java Platform, Enterprise Edition (Java EE) 8 The Java EE Tutorial |
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JavaServer Faces handles Ajax errors through use of the onerror
attribute of the f:ajax
tag. The value of this attribute is the name
of a JavaScript function.
When there is an error in processing a Ajax request, JavaServer Faces
calls the defined onerror
JavaScript function and passes a data object
to it. The data object contains all the properties available for the
onevent
attribute and, in addition, the following properties:
description
errorName
errorMessage
The type
is error
. The status
property of the data object contains
one of the valid error values listed in Table 13-4.
Table 13-4 Valid Error Values for the Data Object status Property
Values |
Description |
|
No Ajax response from server. |
|
One of the valid HTTP errors: |
|
The Ajax response is not well formed. |
|
The Ajax response contains an |
In the following example, any errors that occurred in processing the
Ajax request are handled by the handlemyajaxerror
JavaScript function:
<f:ajax event="click" render="errormessage" onerror="handlemyajaxerror"/>
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