session.java

一个基于Java的新闻发布系统

/*
 * Title: 新疆克拉玛依油田井下公司ERP系统[KHCERP]
 * Copyright: Copyright (c) 2004
 * Company: westerasoft Co., Ltd
 * All rights reserved.
 *
 * Created on 2004-6-17
 * JDK version used : 1.4.1_05
 *
 */
package com.hope.common.util;

import java.io.OutputStream;
import com.hope.common.util.ValueObjectUtil;
/**
 * session对象的取值标签
 *
 * @author AnDong
 */
public class Session extends BaseTag {
	/**
	 * session中保存的变量名称
	 */
	private String name;
	private String property;
	private String defaultValue;
	public String getName() {		return name;	}
	public void setName(String name) {		this.name = name;	}

	public int doStartTag()
	{
		if (name != null )
		{
			try
			{
				if(getProperty() == null)
				{
					String value = (String)session.getAttribute(name);
					if(value == null)
					{
						out.print(defaultValue == null?"":defaultValue);
					}
					else
						out.print(value);
				}
				else
				{
					Object value = session.getAttribute(name);
					if(value == null)
					{
						out.print(defaultValue == null?"":defaultValue);
					}
					else
					{
					    Object propertyValue = ValueObjectUtil.getValue(value,getProperty());
					    if(propertyValue == null)
					        out.print(defaultValue == null?"":defaultValue);
					    else
					        out.print(propertyValue);
					}

				}

				return SKIP_BODY;
			} catch (Exception e)
			{
				e.printStackTrace();
			}
		}

		return SKIP_BODY;
	}
	/**
	 *  Description:
	 * @return
	 * @see com.westerasoft.common.tag.BaseTag#generateContent()
	 */
	public String generateContent() {
		// TODO Auto-generated method stub
		return null;
	}

	/**
	 *  Description:
	 * @param output
	 * @see com.westerasoft.common.tag.BaseTag#write(java.io.OutputStream)
	 */
	public void write(OutputStream output) {
		// TODO Auto-generated method stub

	}

	/**
	 * @return
	 */
	public String getProperty() {
		return property;
	}

	/**
	 * @param string
	 */
	public void setProperty(String string) {
		property = string;
	}

	/**
	 * @return
	 */
	public String getDefaultValue() {
		return defaultValue;
	}

	/**
	 * @param string
	 */
	public void setDefaultValue(String string) {
		defaultValue = string;
	}

}