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发表时间：2007-11-12
现在用Struts2的人开始多起来，为CommonTemplate(http://www.commontemplate.org/)加了一个与Struts2的集成方案，
Struts2(http://struts.apache.org/2.x/)与Webwork一样，提供了模板输出hook， 所以集成是比较简单的，只需实现StrutsResultSupport的doExecute就行了。 下面是暂时的方案，有待调优。
package org.commontemplate.side.struts2;
import java.io.Writer;
import java.util.Locale;
import org.apache.struts2.ServletActionContext;
import org.apache.struts2.dispatcher.StrutsResultSupport;
import org.commontemplate.core.Context;
import org.commontemplate.core.Factory;
import org.commontemplate.core.TemplateException;
import org.commontemplate.engine.Engine;
import org.commontemplate.side.exception.HtmlTemplateExceptionHandler;
import org.commontemplate.side.map.ApplicationMap;
import org.commontemplate.side.map.ModelMap;
import org.commontemplate.side.map.RequestMap;
import org.commontemplate.side.map.SessionMap;
import org.commontemplate.standard.ConfigurationLoader;
import org.commontemplate.standard.ConfigurationSetting;
import org.commontemplate.standard.loader.WebappTemplateSourceLoader;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.LocaleProvider;
public class TemplateResult extends StrutsResultSupport {
private static final long serialVersionUID = 1L;
private Factory factory;
@Override
protected void doExecute(String finalLocation, ActionInvocation invocation)
throws Exception {
synchronized(this) {
if (this.factory == null) {
this.factory = initFactory();
}
}
Writer output = ServletActionContext.getResponse().getWriter();
Context context = null;
try {
context = factory.createContext(output, getLocale(invocation));
context.pushLocalContext("application", new ApplicationMap(ServletActionContext.getRequest().getSession().getServletContext()));
context.pushLocalContext("session", new SessionMap(ServletActionContext.getRequest()));
context.pushLocalContext("request", new RequestMap(ServletActionContext.getRequest()));
context.pushLocalContext(new ModelMap(invocation.getAction()));
factory.getTemplate(finalLocation).render(context);
} catch (TemplateException e) {
new HtmlTemplateExceptionHandler(output).handleTemplateException(e);
} finally {
try {
if (context != null)
context.clear();
output.flush();
} catch (Exception e) {
e.printStackTrace();
}
}
}
protected Factory initFactory() {
ConfigurationSetting config = ConfigurationLoader.loadStandardConfiguration();
config.setTemplateSourceLoader(new WebappTemplateSourceLoader(ServletActionContext.getServletContext()));
return new Engine(config);
}
protected Locale getLocale(ActionInvocation invocation) {
if (invocation.getAction() instanceof LocaleProvider) {
return ((LocaleProvider) invocation.getAction()).getLocale();
} else {
return Locale.getDefault();
}
}
}
测试： 配置struts.xml <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> <struts> <include file="struts-default.xml" /> <package name="test" extends="struts-default"> <result-types> <result-type name="commontemplate" class="org.commontemplate.side.struts2.TemplateResult" /> </result-types> <action name="index" class="com.xxx.IndexAction" method="index"> <result type="commontemplate">index.ctl</result> </action> </package> </struts> 简单的index.ctl
<html>
<head>
</head>
<body>
$for{num : 1..9}
${num}
$end
</body>
</html>
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