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📄 dealscourse_jsp.java

📁 自己写的一个网站,学生管理系,还有带自己写开发文档,可以用于高校学生管理,具体见文档
💻 JAVA
字号:
🔍 
package org.apache.jsp;

import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;
import java.sql.*;
import java.util.*;

public final class dealscourse_jsp extends org.apache.jasper.runtime.HttpJspBase
    implements org.apache.jasper.runtime.JspSourceDependent {

	String cid,sid,url,sql; 
 int recredit,remaxnum;
	Connection conn;//定义数据库连接对象 
	ResultSet rs;//定义结果集对象 
	Statement stmt;//定义SQL语句对象 
  private static java.util.List _jspx_dependants;

  public Object getDependants() {
    return _jspx_dependants;
  }

  public void _jspService(HttpServletRequest request, HttpServletResponse response)
        throws java.io.IOException, ServletException {

    JspFactory _jspxFactory = null;
    PageContext pageContext = null;
    HttpSession session = null;
    ServletContext application = null;
    ServletConfig config = null;
    JspWriter out = null;
    Object page = this;
    JspWriter _jspx_out = null;
    PageContext _jspx_page_context = null;


    try {
      _jspxFactory = JspFactory.getDefaultFactory();
      response.setContentType("text/html; charset=gb2312");
      pageContext = _jspxFactory.getPageContext(this, request, response,
      			null, true, 8192, true);
      _jspx_page_context = pageContext;
      application = pageContext.getServletContext();
      config = pageContext.getServletConfig();
      session = pageContext.getSession();
      out = pageContext.getOut();
      _jspx_out = out;

      out.write("\r\n");
      out.write("<html>\r\n");
      out.write("<head>\r\n");
      out.write("<meta http-equiv=\"Content-Type\" content=\"text/html; charset=gb2312\">\r\n");
      out.write("<title>处理学生选课</title>\r\n");
      out.write("</head>\r\n");
      out.write("<body>\r\n");
      out.write('\r');
      out.write('\n');
      out.write('\r');
      out.write('\n');
      out.write('\r');
      out.write('\n');
      out.write('\r');
      out.write('\n');
      out.write('\r');
      out.write('\n');

    cid=request.getParameter("cid").trim();
    sid=request.getParameter("sid").trim();
    out.println(cid);
    out.println(sid);

    Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();
    url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=meizi3204";
	conn=DriverManager.getConnection(url,"mz","3204");//建立与数据库的连接
	stmt=conn.createStatement();
	sql="select * from SC where Cid='"+cid+"' and Sid='"+sid+"'"; 
	rs=stmt.executeQuery(sql);
	if(rs.next()){
		out.println("您已选修该门课程");
		response.sendRedirect("selectcourse.jsp?sid='"+sid+"'");	
	}
	
	//String maxnum=rs.getString("maxnum");
	//int remaxnum=Integer.parseInt(maxnum);
	//if（remaxnum）
	
    sql="insert into SC(Sid,Cid) values('"+sid+"','"+cid+"')";
	
	stmt.executeUpdate(sql);
	//rs.close();
	stmt.close();
	conn.close();
	response.sendRedirect("selectcourse.jsp?sid="+sid);
	

      out.write("\r\n");
      out.write("</body>\r\n");
      out.write("</html>");
    } catch (Throwable t) {
      if (!(t instanceof SkipPageException)){
        out = _jspx_out;
        if (out != null && out.getBufferSize() != 0)
          out.clearBuffer();
        if (_jspx_page_context != null) _jspx_page_context.handlePageException(t);
      }
    } finally {
      if (_jspxFactory != null) _jspxFactory.releasePageContext(_jspx_page_context);
    }
  }
}

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