📄 deletestudentscoreaction.java

📁 学生信息管理系统
💻 JAVA
字号:
package action;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import vo.*;
import dao.*;
import util.CharsetExchange;
public class DeleteStudentScoreAction extends HttpServlet
{
	public void doGet(HttpServletRequest request ,HttpServletResponse response )throws IOException,ServletException
	{
		String student_id=request.getParameter("student_id");
		String course_id=CharsetExchange.ISOToGB(request.getParameter("courses"));
		String term=request.getParameter("term");
		String class_id=CharsetExchange.ISOToGB(request.getParameter("classes"));
		String examtype=CharsetExchange.ISOToGB(request.getParameter("examtype"));
		if(examtype.equals("必修课"))
		{
			CompulsoryScoreDAO scoredao=new CompulsoryScoreDAO();
			boolean isexist=scoredao.checkScore(student_id,class_id,term,course_id);
			if(!isexist)
			{
				response.setCharacterEncoding("gb2312");
				response.setContentType("text/html");
				PrintWriter out=response.getWriter();
				out.println("<html>");
				out.println("<head><meta http-equiv=refresh content=2;url=deleteStudentScore.jsp>");
				out.println("<title>删除学生成绩信息</title></head>");
				out.println("<body background=2.jpg>");
				out.println("<br><br><br>");
				out.println("<h1 align=center ><font color=red>对不起，该学生的该门成绩不存在，无法删除</font></h1><hr>");
				out.println("<br><br>");
				out.println("</body>");
				out.println("</html>");
			}
			else
			{
				scoredao.deleteScore(student_id,class_id,term,course_id);
				this.getServletContext().getRequestDispatcher("/deleteSucess.jsp").forward(request,response);
			}
		}
		else
		{
			OptionalScoreDAO scoredao=new OptionalScoreDAO();
			boolean isexist=scoredao.checkScore(student_id,term,course_id);
			if(!isexist)
			{
				response.setCharacterEncoding("gb2312");
				response.setContentType("text/html");
				PrintWriter out=response.getWriter();
				out.println("<html>");
				out.println("<head><meta http-equiv=refresh content=2;url=deleteStudentScore.jsp>");
				out.println("<title>删除学生成绩信息</title></head>");
				out.println("<body background=2.jpg>");
				out.println("<br><br><br>");
				out.println("<h1 align=center ><font color=red>对不起，该学生的该门成绩不存在，无法删除</font></h1><hr>");
				out.println("<br><br>");
				out.println("</body>");
				out.println("</html>");
			}
			else
			{
				
				scoredao.deleteScore(student_id,term,course_id);
				this.getServletContext().getRequestDispatcher("/AddSucess.jsp").forward(request,response);
			}
			
		}
	}
	public void doPost(HttpServletRequest request ,HttpServletResponse response )throws IOException,ServletException
	{
		doGet(request,response);	
	}
}
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