import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.TagSupport;
import org.apache.commons.beanutils.PropertyUtils;
import org.apache.taglibs.standard.lang.support.ExpressionEvaluatorManager;

public class SetVarTag extends TagSupport
{
private Object value = null;
private String property = null;
private String var = null;
public void setVar(String var)
{
this.var = var;
}
public void setProperty(String property)
{
this.property = property;
}
public void setValue(Object value)throws JspException{
this.value = ExpressionEvaluatorManager.evaluate( "value", value.toString(), Object.class, this, pageContext);
}
public int doEndTag() throws JspException{
Object propertyValue = null;
try{
propertyValue = PropertyUtils.getProperty(value, property);
}
catch (Exception e) {
throw new JspException(e);
}
pageContext.setAttribute(var,propertyValue);
return EVAL_PAGE;
}
}

＜/body＞
＜/html＞