就是一个下拉框，可以配置选取的范围，用today表示当期年份，输入简单表达式。
package com.cfcc.jaf.webx.component.jafdate.jafyear;import javax.faces.component.UIComponentBase;import javax.faces.context.FacesContext;
/** *//**
* 年份选择框组件 * @author qinjinwei * $date 2007-9-12 上午09:52:28
*/public class JafYear extends UIComponentBase ...{ public final String JAF_DATE_FAMILY = "jaf.jafdate";
public String getFamily() ...{ return JAF_DATE_FAMILY;
} public Object saveState(FacesContext context) ...{ Object values[] = new Object[1]; values[0] = super.saveState(context); return values; } public void restoreState(FacesContext context, Object state) ...{ Object values[] = (Object[]) state; super.restoreState(context, values[0]); }}
package com.cfcc.jaf.webx.component.jafdate.jafyear;import java.io.IOException;import java.util.Date;import java.util.Map;import javax.faces.component.UIComponent;import javax.faces.context.FacesContext;import javax.faces.context.ResponseWriter;import javax.faces.el.ValueBinding;import org.apache.myfaces.shared_tomahawk.renderkit.html.HtmlRenderer;/** *//** * 年份选择框组件renderer * @author qinjinwei * $date 2007-9-12 上午09:52:30 */public class JafYearRenderer extends HtmlRenderer ...{ public void encodeEnd(FacesContext facesContext, UIComponent component) throws IOException ...{ String sfrom = (String) component.getAttributes().get("from"); String sto = (String) component.getAttributes().get("to"); int ifrom = convert(sfrom) + 1900; int ito = convert(sto) + 1900; ResponseWriter writer = facesContext.getResponseWriter(); String clientId = component.getClientId(facesContext); ValueBinding vb = component.getValueBinding("value"); String syear = (String) vb.getValue(facesContext); if(syear == null) ...{ syear = "" + (new Date().getYear() + 1900 ); } int year = Integer.parseInt(syear); writer.write("<select id="" + clientId + "" name="" + clientId + ""> "); for (int i = ifrom; i <= ito; i++) ...{ writer.write("<option value="" + i + """); if(year == i) ...{ writer.write(" selected "); } writer.write(">" + i ); writer.write("年</option> "); } writer.write("</select>"); } public void decode(FacesContext facesContext, UIComponent uiComponent) ...{ Map paramMap = facesContext.getExternalContext() .getRequestParameterMap(); String clientId = uiComponent.getClientId(facesContext); if(paramMap.containsKey(clientId)) ...{ String value = (String) paramMap .get(clientId); ValueBinding vb = uiComponent.getValueBinding("value"); vb.setValue(facesContext, value); System.out.println(clientId + " value is: " + value); } } private int convert(String exp) ...{ boolean bflagt = false; boolean bflags = false; String ex = exp.replaceAll(" ", ""); if (ex.startsWith("today")) ...{ bflagt = true; ex = ex.replaceAll("today", ""); } if (ex.startsWith("+")) ...{ bflags = true; } ex = ex.substring(1, ex.length()); int rvalue = Integer.parseInt(ex); if(!bflags) ...{ rvalue = - rvalue; } if (bflagt) rvalue = rvalue + new Date().getYear(); return rvalue; }}
package com.cfcc.jaf.webx.component.jafdate.jafyear;import javax.faces.application.Application;import javax.faces.component.UIComponent;import javax.faces.context.FacesContext;import javax.faces.el.ValueBinding;import javax.faces.webapp.UIComponentTag;/** *//** * 年份选择框组件的标签 * @author qinjinwei * $date 2007-9-12 上午09:52:36 */public class JafYearTag extends UIComponentTag...{ public String getComponentType() ...{ return "com.cfcc.jaf.webx.component.jafdate.jafyear.JafYear"; } public String getRendererType() ...{ return "com.cfcc.jaf.webx.component.jafdate.jafyear.JafYearRenderer"; } private String from; private String to; private String value; public String getValue() ...{ return value; } public void setValue(String value) ...{ this.value = value; } public String getFrom() ...{ return from; } public void setFrom(String from) ...{