一个jsf的face-config.xml看不懂

最新推荐文章于 2022-12-31 17:35:15 发布

bengan

最新推荐文章于 2022-12-31 17:35:15 发布

阅读量481

点赞数

分类专栏： java开发文章标签： JSF XML SUN JSP Security

java开发专栏收录该内容

21 篇文章

订阅专栏

本文解析了一个JSF项目的face-config.xml文件内容，展示了如何通过自定义的视图处理器和状态管理器来增强应用的功能。具体包括XxxJspDynamicViewerHandler类中对URL的处理逻辑，以及XxxAjaxStateManager类中对视图状态数量的定制。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

刚学习jsf，公司一个jsf工程里的face-config.xml看不懂，请大家指点一下！

<?xml version="1.0"?>
<!DOCTYPE faces-config PUBLIC "-//Sun Microsystems, Inc.//DTD JavaServer Faces Config 1.1//EN" "http://java.sun.com/dtd/web-facesconfig_1_1.dtd">
<faces-config>
    <application>
        <view-handler>com.xxx.framework.jsf.viewhandler.XxxJspDynamicViewerHandler</view-handler>
        <state-manager>com.xxx.framework.jsf.XxxAjaxStateManager</state-manager>
    </application>
</faces-config>


package com.Xxx.framework.jsf.viewhandler;

import javax.faces.context.FacesContext;
import org.apache.myfaces.application.jsp.JspViewHandlerImpl;
import com.xxx.framework.constant.FwkConstant;
import com.xxx.framework.logging.AppLogFactory;
import com.xxx.framework.logging.ILog;

public class XxxJspDynamicViewerHandler extends JspViewHandlerImpl {


	// For logging:
	private final ILog log = AppLogFactory.getLog(XxxJspDynamicViewerHandler.class, FwkConstant.MODULE_SECURITY);

	public String getActionURL(FacesContext facesContext, String viewId) {
	    String path = "";
	    int nIndexOfFollowingParamSign = -1;
	    if ( XxxJspDynamicViewerHandler.containsXxxJspViewHandlerImpIndicator(viewId) ) {

	        nIndexOfFollowingParamSign = viewId.indexOf("?");
	        if ( -1 != nIndexOfFollowingParamSign) {
	            path = super.getActionURL(facesContext, viewId) + viewId.substring(nIndexOfFollowingParamSign);
	        } // end if
	    } // end if


	    if ( path != null && path.length() == 0 ) {
	        path = super.getActionURL(facesContext, viewId);
	    }

	    return path;
	}

	public static boolean containsXxxJspViewHandlerImpIndicator(String paramStr)  {
	    return ((null != paramStr) && (paramStr.indexOf(FwkConstant.Xxx_VIEWHANDLER_INDICATOR) != -1)) ? true : false;
	}		

}


package com.Xxx.framework.jsf;

import javax.faces.application.StateManager;
import javax.faces.context.ExternalContext;

import org.ajax4jsf.application.AjaxStateManager;

public class XxxAjaxStateManager extends AjaxStateManager{
	private static final String VIEW_PARAM_KEY = "com.wtt.framework.NUMBER_OF_STATES_IN_VIEW";
	private int numberOfViews = -1;

	public XxxAjaxStateManager(StateManager stateManager) {
		super(stateManager);
	}

	@Override
	protected int getNumberOfViews(ExternalContext externalContext) {
		if (this.numberOfViews == -1) {
			if (externalContext.getInitParameter(VIEW_PARAM_KEY) != null) {
				try {
					this.numberOfViews = Integer.valueOf(externalContext.getInitParameter(VIEW_PARAM_KEY));
				} catch (NumberFormatException nfe) {
					this.numberOfViews = super.getNumberOfViews(externalContext);
				}
			}
		}
		return this.numberOfViews;
	}
}