org.apache.struts2.components
Class ServletUrlRenderer

java.lang.Object
  org.apache.struts2.components.ServletUrlRenderer

All Implemented Interfaces:

UrlRenderer

public class ServletUrlRenderer
extends Object
implements UrlRenderer

Implementation of the UrlRenderer interface that creates URLs suitable in a servlet environment.

Field Summary

private ActionMapper	actionMapper
private static Logger	LOG Provide a logging instance.

Constructor Summary

ServletUrlRenderer()

Method Summary

void	beforeRenderUrl(URL urlComponent) Preprocessing step
private String	extractQueryString(URL urlComponent)
private void	includeExtraParameters(URL urlComponent)
private void	includeGetParameters(URL urlComponent)
protected void	mergeRequestParameters(String value, Map parameters, Map contextParameters) Merge request parameters into current parameters.
void	renderFormUrl(Form formComponent) Render a Form URL.
void	renderUrl(Writer writer, URL urlComponent) Render a URL.
void	setActionMapper(ActionMapper mapper)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

LOG

private static final Logger LOG

Provide a logging instance.

actionMapper

private ActionMapper actionMapper

Constructor Detail

ServletUrlRenderer

public ServletUrlRenderer()

Method Detail

setActionMapper

public void setActionMapper(ActionMapper mapper)

renderUrl

public void renderUrl(Writer writer,
                      URL urlComponent)

Render a URL.

Specified by:

renderUrl in interface UrlRenderer

Parameters:

writer - A writer that the implementation can use to write the result to.

urlComponent - The URL component that "owns" this renderer.

renderFormUrl

public void renderFormUrl(Form formComponent)

Render a Form URL.

Specified by:

renderFormUrl in interface UrlRenderer

Parameters:

formComponent - The Form component that "owns" this renderer.

beforeRenderUrl

public void beforeRenderUrl(URL urlComponent)

Description copied from interface: UrlRenderer

Preprocessing step

Specified by:

beforeRenderUrl in interface UrlRenderer

includeExtraParameters

private void includeExtraParameters(URL urlComponent)

includeGetParameters

private void includeGetParameters(URL urlComponent)

extractQueryString

private String extractQueryString(URL urlComponent)

mergeRequestParameters

protected void mergeRequestParameters(String value,
                                      Map parameters,
                                      Map contextParameters)

Merge request parameters into current parameters. If a parameter is already present, than the request parameter in the current request and value atrribute will not override its value. The priority is as follows:-

• parameter from the current request (least priority)
• parameter form the value attribute (more priority)
• parameter from the param tag (most priority)

Parameters:

value - the value attribute (url to be generated by this component)

parameters - component parameters

contextParameters - request parameters