📄 insertcourse_jsp.java
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package org.apache.jsp;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;
import java.sql.*;
import java.util.*;
public final class insertcourse_jsp extends org.apache.jasper.runtime.HttpJspBase
implements org.apache.jasper.runtime.JspSourceDependent {
String cid,cname,cpre,credit,maxnum,coursetime,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>插入课程</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();
cname=request.getParameter("cname").trim();
cname=new String(cname.getBytes("ISO-8859-1"));//编码转换
cpre=request.getParameter("cpre").trim();
credit=request.getParameter("credit").trim();
//recredit=Integer.parseInt(credit);
maxnum=request.getParameter("maxnum").trim();
if (maxnum=="")remaxnum=150;
else
remaxnum=Integer.parseInt(maxnum);
coursetime=request.getParameter("coursetime").trim();
coursetime=new String(coursetime.getBytes("ISO-8859-1"));
if(cid.length()!=4){//检查学号的位数
response.sendRedirect("addcourse.jsp");
}
if(cname.equals("")){//检查姓名是否为空
response.sendRedirect("err.jsp");
}
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 Course where cid='"+cid+"'";
rs=stmt.executeQuery(sql);
if(rs.next()){
response.sendRedirect("err.jsp");
}
sql="insert into Course(Cid,Cname,Cpre,Credit,Maxnum,Coursetime)";
sql=sql+"values('"+cid+"','"+cname+"','"+cpre+"','"+recredit+"','"+remaxnum+"','"+coursetime+"')";
stmt.executeUpdate(sql);
rs.close();
stmt.close();
conn.close();
out.println("<font size=3 color=blue>正在处理信息，请稍后......</font><meta http-equiv='refresh' content='2;url=allcourse.jsp'>");
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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