📄 bookreturn_jsp.java
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package org.apache.jsp;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;
import java.sql.*;
public final class bookreturn_jsp extends org.apache.jasper.runtime.HttpJspBase
implements org.apache.jasper.runtime.JspSourceDependent {
private static java.util.Vector _jspx_dependants;
public java.util.List 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,
"", 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<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">\r\n<html>\r\n<head>\r\n<meta http-equiv=\"Content-Type\" content=\"text/html; charset=gb2312\">\r\n<title>Return Book</title>\r\n<style type=\"text/css\">\r\n<!--\r\n.style3 {font-size: 24px}\r\n.style4 {font-size: 18px}\r\n-->\r\n</style></head>\r\n\r\n<body>\r\n<form name=\"form1\" method=\"post\" action=\"\">\r\n <table border=\"0\" cellpadding=\"0\" cellspacing=\"0\">\r\n <tr align=\"left\" valign=\"top\" bgcolor=\"#000000\">\r\n <td height=\"100\" colspan=\"2\"><table width=\"100%\" border=\"0\" align=\"left\" cellpadding=\"0\" cellspacing=\"1\" bgcolor=\"#FFFFFF\">\r\n <tr>\r\n <td bgcolor=\"#FFFFFF\"><img src=\"F:\\example\\图书馆\\login\\library1.gif\" width=\"699\" height=\"100\" alt=\"\"></td>\r\n </tr>\r\n </table></td>\r\n </tr>\r\n <tr>\r\n <td height=\"449\" align=\"left\" valign=\"top\" bgcolor=\"#000000\"><table width=\"99%\" border=\"0\" align=\"left\" cellpadding=\"0\" cellspacing=\"0\" bgcolor=\"#FFFFFF\">\r\n <tr>\r\n <td valign=\"top\" bgcolor=\"#CCCCCC\"><table width=\"70%\" border=\"0\" align=\"center\" cellpadding=\"0\" cellspacing=\"1\" bgcolor=\"#CCCCCC\">\r\n");
out.write(" <tr>\r\n <td width=\"20\" align=\"right\"> </td>\r\n <td width=\"130\" align=\"center\"> </td>\r\n </tr>\r\n <tr>\r\n <td width=\"20\" align=\"right\"><img src=\"F:\\example\\图书馆\\login/library3.png\" width=\"10\" height=\"10\" alt=\"\"></td>\r\n <td width=\"130\" align=\"center\"> <a href=\"userrights.jsp\">UserRights</a> </td>\r\n </tr>\r\n <tr>\r\n <td width=\"20\" height=\"5\" align=\"right\"> </td>\r\n <td width=\"130\" height=\"5\" align=\"center\"><img src=\"F:\\example\\图书馆\\login/library4.png\" width=\"102\" height=\"5\" alt=\"\"></td>\r\n </tr>\r\n <tr>\r\n <td width=\"20\" align=\"right\"><img src=\"F:\\example\\图书馆\\login/library3.png\" width=\"10\" height=\"10\" alt=\"\"></td>\r\n <td width=\"130\" align=\"center\"><a href=\"modifymessage.jsp\">ModifyMessage</a></td>\r\n </tr>\r\n <tr>\r\n <td width=\"20\" height=\"5\" align=\"right\"> </td>\r\n <td width=\"130\" height=\"5\" align=\"center\"><img src=\"F:\\example\\图书馆\\login/library4.png\" width=\"102\" height=\"5\" alt=\"\"></td>\r\n");
out.write(" </tr>\r\n <tr>\r\n <td width=\"20\" align=\"right\"><img src=\"F:\\example\\图书馆\\login/library3.png\" width=\"10\" height=\"10\" alt=\"\"></td>\r\n <td width=\"130\" align=\"center\"><a href=\"booksearch.jsp\">BookSearch</a></td>\r\n </tr>\r\n <tr>\r\n <td width=\"20\" align=\"right\"> </td>\r\n <td width=\"130\" align=\"center\"><img src=\"F:\\example\\图书馆\\login/library4.png\" width=\"102\" height=\"5\" alt=\"\"></td>\r\n </tr>\r\n <tr>\r\n <td width=\"20\" align=\"right\"><img src=\"F:\\example\\图书馆\\login/library3.png\" width=\"10\" height=\"10\" alt=\"\"></td>\r\n <td width=\"130\" align=\"center\"><a href=\"bookreturn.jsp\">BookReturn</a></td>\r\n </tr>\r\n <tr>\r\n <td width=\"20\" align=\"right\"> </td>\r\n <td width=\"130\" align=\"center\"><img src=\"F:\\example\\图书馆\\login/library4.png\" width=\"102\" height=\"5\" alt=\"\"></td>\r\n </tr>\r\n <tr>\r\n <td width=\"20\" align=\"right\"><img src=\"F:\\example\\图书馆\\login/library3.png\" width=\"10\" height=\"10\" alt=\"\"></td>\r\n");
out.write(" <td width=\"130\" align=\"center\"><a href=\"haveborrowtemp.jsp\">HaveBorrow</a></td>\r\n </tr>\r\n <tr>\r\n <td width=\"20\" align=\"right\"> </td>\r\n <td width=\"130\" align=\"center\"><img src=\"F:\\example\\图书馆\\login/library4.png\" width=\"102\" height=\"5\" alt=\"\"></td>\r\n </tr>\r\n </table></td>\r\n </tr>\r\n <tr>\r\n <td height=\"230\" valign=\"top\" bgcolor=\"#CCCCCC\"> </td>\r\n </tr>\r\n </table></td>\r\n <td height=\"449\" align=\"left\" valign=\"top\"><table width=\"80%\" border=\"1\" align=\"center\" cellpadding=\"10\" cellspacing=\"1\">\r\n <tr align=\"center\">\r\n <td height=\"50\" colspan=\"2\"><span class=\"style3\">Return Book </span></td>\r\n </tr>\r\n <tr>\r\n <td width=\"37%\" height=\"30\" align=\"right\" ><span class=\"style4\">Title:</span></td>\r\n <td width=\"63%\" height=\"30\"><span class=\"style4\">\r\n <input name=\"title\" type=\"text\" id=\"title\" size=\"10\" maxlength=\"8\">\r\n ***</span></td>\r\n");
out.write(" </tr>\r\n <tr>\r\n <td height=\"30\" colspan=\"2\" align=\"right\"> <table width=\"60%\" border=\"0\" align=\"center\" cellpadding=\"0\" cellspacing=\"1\">\r\n <tr>\r\n <td width=\"50%\" align=\"center\"><input name=\"enter\" type=\"submit\" id=\"enter\" value=\"Enter\"></td>\r\n <td width=\"50%\" align=\"center\"><input name=\"reset\" type=\"reset\" id=\"reset\" value=\"Reset\"></td>\r\n </tr>\r\n </table></td>\r\n </tr>\r\n </table></td>\r\n </tr>\r\n <tr>\r\n <td bgcolor=\"#666666\"> </td>\r\n <td><img src=\"F:\\example\\图书馆\\login/library2.png\" width=\"573\" height=\"40\" alt=\"\"></td>\r\n </tr>\r\n </table>\r\n</form>\r\n");
login.Library Library = null;
synchronized (session) {
Library = (login.Library) _jspx_page_context.getAttribute("Library", PageContext.SESSION_SCOPE);
if (Library == null){
Library = new login.Library();
_jspx_page_context.setAttribute("Library", Library, PageContext.SESSION_SCOPE);
out.write('\r');
out.write('\n');
}
}
out.write('\r');
out.write('\n');
try{
int flag=0,flag1=0;String studentnumber="";
String id=Library.getid();
Connection conn=Library.getConn();
Statement stmt,stmt1;
stmt = conn.createStatement();
stmt1 = conn.createStatement();
ResultSet rs4 = stmt.executeQuery("select * from borrowbook where id ='" + id + "' and title ='" + request.getParameter("title") + "' and returndata = '0'");
if(rs4.next()){//判断在borrowbook表中是否有当前用户指定书名的书的未还记录，即returndata="0"
stmt1.executeUpdate("update borrowbook set returndata = '" + (new java.util.Date().getYear()*365 + new java.util.Date().getMonth()*31 + new java.util.Date().getDay()) + "' where title ='" + request.getParameter("title") + "'and id ='" + id + "' and returndata = '0'");
//一个用户不会有病到在一本书还没还的情况下，再借一本相同的书吧
ResultSet rs6 = stmt.executeQuery("select * from book where title ='" + request.getParameter("title") + "'");
while(rs6.next()){
int oldinbook = Integer.parseInt(rs6.getString("innumber"));
int oldoutbook = Integer.parseInt(rs6.getString("outnumber"));
String newinbook = "update book set innumber ='" + (oldinbook+1) +"' where title ='" + request.getParameter("title") + "'";
stmt1.executeUpdate(newinbook);
String newoutbook = "update book set outnumber ='" + (oldoutbook-1) +"' where title ='" + request.getParameter("title") + "'";
stmt1.executeUpdate(newoutbook);
// out.println("<p>You succeed in returning this book.</p>");
}
}
}catch (Exception ex) {
response.sendRedirect("fail.jsp");
ex.printStackTrace();}
out.write("\r\n</body>\r\n</html>\r\n");
} 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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