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Description
Editing web.xml could be simplified, as suggested in the above forum post. Maybe something like:
WebXMLBuilder.addFilter(webXml).setName(param).set Class(param)
This would seem to resolve a number of hickups we encountered during development of add-ons to date like filter/filter-mapping ordering semantics etc.
It might be better to put this into a metadata object instead of provide a builder. It's also appropriate to review the web.xml fragmentation capabilities being considered in Servlet Spec 3 if building a metadata object.
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ROO-818
Roo addons which manipulate web.xml should use the new WebXmlUtils
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+1 on this one.
I´m starting to write my first add-on and needed to write functions like this one:
private void addContextParam(Document webXml, String paramName, String paramValue) {
Element root = webXml.getDocumentElement();
if (null != XmlUtils.findFirstElement("/web-app/context-param[param-name='" + paramName + "']", root))
{ //context-param already exists, nothing to do return; }Element lastContextParam = XmlUtils.findRequiredElement("/web-app/context-param[last()]", root);
Element contextParamElement = webXml.createElement("context-param");
Element paramNameElement = webXml.createElement("param-name");
paramNameElement.setTextContent(paramName);
contextParamElement.appendChild(paramNameElement);
Element paramValueElement = webXml.createElement("param-value");
paramValueElement.setTextContent(paramValue);
contextParamElement.appendChild(paramValueElement);
root.insertBefore(contextParamElement, lastContextParam.getNextSibling());
}
Murilo Rodrigues
added a comment - +1 on this one.
I´m starting to write my first add-on and needed to write functions like this one:
private void addContextParam(Document webXml, String paramName, String paramValue) {
Element root = webXml.getDocumentElement();
if (null != XmlUtils.findFirstElement("/web-app/context-param [param-name='" + paramName + "'] ", root))
{
//context-param already exists, nothing to do
return;
}
Element lastContextParam = XmlUtils.findRequiredElement("/web-app/context-param [last()] ", root);
Element contextParamElement = webXml.createElement("context-param");
Element paramNameElement = webXml.createElement("param-name");
paramNameElement.setTextContent(paramName);
contextParamElement.appendChild(paramNameElement);
Element paramValueElement = webXml.createElement("param-value");
paramValueElement.setTextContent(paramValue);
contextParamElement.appendChild(paramValueElement);
root.insertBefore(contextParamElement, lastContextParam.getNextSibling());
} Introduced WebXmlUtils class which provides convenient access to manage most contents of a Roo web.xml file.
As an example:
WebXmlUtils.addContextParam(new WebXmlUtils.WebXmlParam("defaultHtmlEscape", "true"), webXml, "Enable escaping of form submission contents");
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WebXmlUtils.addFilter("CharacterEncodingFilter", "org.springframework.web.filter.CharacterEncodingFilter", "/*", webXml, null, new WebXmlUtils.WebXmlParam("encoding", "UTF-8"), new WebXmlUtils.WebXmlParam("forceEncoding", "true"));
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WebXmlUtils.addListener("org.springframework.web.context.ContextLoaderListener", webXml, "Creates the Spring Container shared by all Servlets and Filters");
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WebXmlUtils.addServlet(projectMetadata.getProjectName(), "org.springframework.web.servlet.DispatcherServlet", "/app/*", new Integer(1), webXml, "Handles Spring requests", new WebXmlUtils.WebXmlParam("contextConfigLocation", "/WEB-INF/spring/webmvc-config.xml"));
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WebXmlUtils.setSessionTimeout(new Integer(10), webXml, null);
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WebXmlUtils.addWelcomeFile("index", webXml, null);
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WebXmlUtils.addExceptionType("java.lang.Exception", "/app/uncaughtException", webXml, null);
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WebXmlUtils.addErrorCode(new Integer(404), "/app/resourceNotFound", webXml, null);
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Stefan Schmidt
added a comment - Introduced WebXmlUtils class which provides convenient access to manage most contents of a Roo web.xml file.
As an example:
WebXmlUtils.addContextParam(new WebXmlUtils.WebXmlParam("defaultHtmlEscape", "true"), webXml, "Enable escaping of form submission contents");
WebXmlUtils.addFilter("CharacterEncodingFilter", "org.springframework.web.filter.CharacterEncodingFilter", "/*", webXml, null, new WebXmlUtils.WebXmlParam("encoding", "UTF-8"), new WebXmlUtils.WebXmlParam("forceEncoding", "true"));
WebXmlUtils.addListener("org.springframework.web.context.ContextLoaderListener", webXml, "Creates the Spring Container shared by all Servlets and Filters");
WebXmlUtils.addServlet(projectMetadata.getProjectName(), "org.springframework.web.servlet.DispatcherServlet", "/app/*", new Integer(1), webXml, "Handles Spring requests", new WebXmlUtils.WebXmlParam("contextConfigLocation", "/WEB-INF/spring/webmvc-config.xml"));
WebXmlUtils.setSessionTimeout(new Integer(10), webXml, null);
WebXmlUtils.addWelcomeFile("index", webXml, null);
WebXmlUtils.addExceptionType("java.lang.Exception", "/app/uncaughtException", webXml, null);
WebXmlUtils.addErrorCode(new Integer(404), "/app/resourceNotFound", webXml, null);
Minor correction in servlet definition (rev d0eaa491e356af8c2a5247abb771a5ad5b4056d5).
Stefan Schmidt
added a comment - Minor correction in servlet definition (rev d0eaa491e356af8c2a5247abb771a5ad5b4056d5). 
Assigned to Stefan so we can capture requirements, assess time required and consider which future release is realistic.