navbartag.java

来自「一个用java编写的功能强大的OA系统」· Java 代码 · 共 52 行

package cn.js.fan.module.nav;

import javax.servlet.jsp.tagext.*;
import org.apache.log4j.Logger;
import cn.js.fan.db.RMConn;
import cn.js.fan.db.ResultIterator;
import java.sql.SQLException;
import java.util.Iterator;

public class NavBarTag extends TagSupport {
    Iterator ir = null;
    String query, db;
    Logger logger = Logger.getLogger(NavBarTag.class.getName());

    public NavBarTag() {
    }

    
    public int doStartTag() {
        getAllNav();
        return EVAL_BODY_INCLUDE;
    }

    
    public int doAfterBody() {
        try {
            if (ir==null || !ir.hasNext()) {
                return SKIP_BODY; 
            } else {
                return EVAL_BODY_AGAIN; 
            }
        }

        catch (Exception e) {
            logger.error(e.getMessage());
        }
        return SKIP_BODY;
    }


    
    public int doEndTag() {
        return EVAL_PAGE;
    }

    public void getAllNav() {
        NavigationMgr nmr = new NavigationMgr();
        ir = nmr.getAllNav();
    }

}