returnurltag.java

来自「一个免费wap站」· Java 代码 · 共 76 行

package com.eline.wap.catalog.taglib.wml;

import java.io.IOException;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.TagSupport;

import com.eline.wap.catalog.client.CatalogHelper;
import com.eline.wap.catalog.exceptions.CatalogException;
import com.eline.wap.catalog.model.Item;
import com.eline.wap.catalog.model.ListItem;
import com.eline.wap.catalog.model.SingleItem;
import com.eline.wap.catalog.util.WapFormatter;
import com.eline.wap.common.util.AppLogger;
import com.eline.wap.common.util.WapUrls;

public class ReturnURLTag extends TagSupport {

	/**
	 * 
	 */
	private static final long serialVersionUID = 3005167481026865850L;

	private int catalogId = -1;
	private String type = "list";

	public int doStartTag() throws JspException {
		CatalogHelper ch = new CatalogHelper();
		String returnURL = null;

		if (catalogId <= 0)
			return SKIP_BODY;

		try {
			Item item = ch.getItem(catalogId);
			int parentId = item.getParentId();
			if (parentId > 0) {
				if (type.equalsIgnoreCase("list")) {
					Item parentItem = ch.getItem(parentId);
					if (parentItem instanceof ListItem) {
						returnURL = WapFormatter.getListURL(((ListItem)parentItem).getListAttribute()) + "?catalogId=" + parentItem.getIndexId();
					}
				} else {
					if (item instanceof SingleItem) {
						returnURL = WapFormatter.getSingleURL(((SingleItem)item).getSingleAttribute()) + "?catalogId=" + catalogId;
					}
				}
			} else {
				returnURL = WapUrls.getInstance().getProperty(WapUrls.CATALOG_LIST) + "?catalogId=0";
			}
		} catch (CatalogException e) {
			AppLogger.error("ReturnURLTag.doStartTag() CatalogException : " + e.getMessage());
		}

		JspWriter out = pageContext.getOut();
		try {
			out.print(returnURL);
		} catch (IOException e) {
			
		}
		return EVAL_PAGE;
	}
	public int doEndTag() throws JspException {
		// TODO Auto-generated method stub
		return super.doEndTag();
	}
	public void setCatalogId(int catalogId) {
		this.catalogId = catalogId;
	}
	public void setType(String type) {
		this.type = type;
	}
	
}