?? queryselectedtopic.java
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package com.middle.graduate.servlet.teacher.operation;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Set;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import com.middle.graduate.biz.dao.DBTeacherDao;
import com.middle.graduate.biz.dao.impl.DBTeacherImpl;
import com.middle.graduate.biz.entity.Topic;
import com.middle.graduate.biz.exce.DataException;
import com.middle.graduate.util.HbnUtil;
public class QuerySelectedTopic extends HttpServlet {
private DBTeacherDao dao = new DBTeacherImpl();
private static final long serialVersionUID = -938672268339047639L;
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("gbk");
response.setContentType("text/html;charset=gb2312");
HttpSession session = request.getSession();
Integer teacherId = (Integer)session.getAttribute("teacherId");
System.out.println("teacherId = " + teacherId);
PrintWriter out = response.getWriter();
try {
Set<Topic> set = dao.queryTopic(teacherId);
out.println("<html>");
out.println("<head>");
out.println("<title>query submitted topic</title>");
out.println("</head>");
out.println("<body bgcolor = \"greeen\">");
out.println("<table align = \"center\" border = \"2\">");
out.println("<form>");
out.println("<tr><td align = \"center\">課題號</td>");
out.println("<td align = \"center\">課題名稱</td>");
out.println("<td align = \"center\">課題描述</td>");
out.println("<td align = \"center\">課題屬性</td>");
out.println("<td align = \"center\">選題學生</td>");
for (Topic t : set) {
out.println("<tr>"
+ "<td align = \"center\">" + t.getTopicId() + "</td>"
+ "<td align = \"center\">" + t.getTopicName() + "</td>"
+ "<td align = \"center\">" + t.getTopicContent() + "</td>"
+ "<td align = \"center\">" + t.getTopicProperty() + "</td>"
+ "<td align = \"center\">" + t.getStudent().getStudentName() + "</td>"
+ "</tr>");
}
out.println("</form>");
out.println("</table>");
out.println("</body>");
out.println("</html>");
} catch (DataException e) {
e.printStackTrace();
} finally {
HbnUtil.closeSession();
out.close();
}
}
}
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