queryschoolallcoursestag.java

学生信息管理系统

package tagext;
import java.io.*;
import java.util.*;
import vo.CourseVO;
import dao.CourseDAO;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.PageContext;
import javax.servlet.jsp.JspException;
import javax.servlet.http.HttpSession;
import javax.servlet.jsp.tagext.TagSupport;
import javax.servlet.http.HttpServletRequest;
public class QuerySchoolAllCoursesTag extends TagSupport
{
	public int doStartTag()throws JspException
	{
		JspWriter out=pageContext.getOut();
		HttpServletRequest request=(HttpServletRequest)pageContext.getRequest();
		HttpSession session=request.getSession(true);
		try
			{
				ArrayList courses = (ArrayList)session.getAttribute("allcourses");
				out.print("<table align=center border=1>");
				out.println("<tr>");
			
				out.println("<td align=center><font size=5 color=blue>课程编号");
				out.println("</td>");
				out.println("<td align=center><font size=5 color=blue>课程名称");
				out.println("</td>");
				out.println("<td align=center><font size=5 color=blue>学期");
				out.println("</td>");
				out.println("<td align=center><font size=5 color=blue>课程类型");
				out.println("</td>");
				out.println("<td align=center><font size=5 color=blue>总课时");
				out.println("</td>");
				out.println("<td align=center><font size=5 color=blue>学分");
				out.println("</td>");
			
				out.println("</tr>");
				
				for(int i=0;i<courses.size();i++)
				
				{
					CourseVO coursevo=(CourseVO)courses.get(i);
					out.println("<tr>");
					out.println("<td align=center><font size=5 color=blue>"+coursevo.getCourseId());
					out.println("</td>");
					out.println("<td align=center><font size=5 color=blue>"+coursevo.getCourseName());
					out.println("</td>");
					out.println("<td align=center><font size=5 color=blue>"+coursevo.getTerm());
					out.println("</td>");
					out.println("<td align=center><font size=5 color=blue>"+coursevo.getExamtype());
					out.println("</td>");
					out.println("<td align=center><font size=5 color=blue>"+coursevo.getTotal());
					out.println("</td>");
					out.println("<td align=center><font size=5 color=blue>"+coursevo.getScore());
					out.println("</td>");
					
					out.println("</tr>");
				}
		    	out.println("</table>");	
			}
		    catch(IOException ioe)
		    {
		    	ioe.printStackTrace();
		    }
		return this.SKIP_BODY;
	}
	public int doEndTag()throws JspException
	{
		return this.EVAL_PAGE;
	}
}