THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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public class ExceptionsMethodLevelAction {
@Action(value = "exception1", exceptionMappings = {
@ExceptionMapping(exception = "java.lang.NullPointerException", result = "success", params = {"param1", "val1"})
})
public String run1() throws Exception {
return null;
}
}
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Troubleshooting
Tips
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Make sure the namespace of you action is matched by one of the locators. The rest of the namespace after the locator, will be the namespace of the action, and will be used to find the results. For example, a class called "ViewAction" in the package "my.example.actions.orders" will be mapped to the URL /orders/view.action, and the results must be under /WEB-INF/content/orders, like /WEB-INF/content/orders/view-success.jsp. |
Automatic configuration reloading
The Convention plugin can automatically reload configuration changes, made in classes the contain actions, without restarting the container. This is a similar behavior to the automatic xml configuration reloading. To enable this feature, add this to your struts.xml file:
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<constant name="struts.devMode" value="true"/>
<constant name="struts.convention.classes.reload" value="true" />
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This feature is experimental and has not been tested on all container, and it is strongly advised not to use it in production environments.
Troubleshooting
Tips
| Tip | ||
|---|---|---|
| ||
Make sure the namespace of you action is matched by one of the locators. The rest of the namespace after the locator, will be the namespace of the action, and will be used to find the results. For example, a class called "ViewAction" in the package "my.example.actions.orders" will be mapped to the URL /orders/view.action, and the results must be under /WEB-INF/content/orders, like /WEB-INF/content/orders/view-success.jsp. |
| Tip | ||
|---|---|---|
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Add the | ||
| Tip | ||
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Add the Config Browser Plugin plugin to you lib folder or maven dependencies, and then visit: http://localhost:8080/YOUR_CONTEXT_HERE/config-browser/index.action |
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Common Errors
- I get an error like "There is no Action mapped for namespace /orders and action name view.". This means that the URL /orders/view.action is not mapping to any action class. Check the namespace and the name of the action.
- I get an error like "No result defined for action "my.example.actions.orders.ViewAction and result success". This means that the action was mapped to the right URL, but the Convention plugin was unable to find a success result for it. Check that the result file exists, like /WEB-INF/content/orders/view-success.jsp.
Automatic configuration reloading
The Convention plugin can automatically reload configuration changes, made in classes the contain actions, without restarting the container. This is a similar behavior to the automatic xml configuration reloading. To enable this feature, add this to your struts.xml file:
...
<constant name="struts.devMode" value="true"/>
<constant name="struts.convention.classes.reload" value="true" />
- There is no Action mapped for namespace /orders and action name view.". This means that the URL /orders/view.action is not mapping to any action class. Check the namespace and the name of the action.
- I get an error like "No result defined for action "my.example.actions.orders.ViewAction and result success". This means that the action was mapped to the right URL, but the Convention plugin was unable to find a success result for it. Check that the result file exists, like /WEB-INF/content/orders/view-success.jsp
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- .
Configuration reference
Add a constant element to your struts config file to change the value of a configuration setting, like:
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