books_jsp.java

比较完整的网上书店系统

      String sPage = "";
      

      out.println("    <table style=\"\">");
      
      out.println("     <form method=\"get\" action=\"Books.jsp\" name=\"Search\">\n     <tr>");
      // Set variables with search parameters
      
      fldcategory_id = getParam( request, "category_id");
      fldname = getParam( request, "name");

      // Show fields
      

      out.println("      <td style=\"background-color: #FFEAC5; border-style: inset; border-width: 0\"><font style=\"font-size: 10pt; color: #000000\">分类</font></td>");
      out.print("      <td style=\"background-color: #FFFFFF; border-width: 1\">"); 
      out.print("<select name=\"category_id\">"+getOptions( conn, "select category_id, name from categories order by 2",true,false,fldcategory_id)+"</select>");
       out.println("</td>\n     </tr>\n     <tr>");
      
      out.println("      <td style=\"background-color: #FFEAC5; border-style: inset; border-width: 0\"><font style=\"font-size: 10pt; color: #000000\">相关词</font></td>");
      out.print("      <td style=\"background-color: #FFFFFF; border-width: 1\">"); out.print("<input type=\"text\"  name=\"name\" maxlength=\"10\" value=\""+toHTML(fldname)+"\" size=\"10\">");
 out.println("</td>\n     </tr>\n     <tr>");
      
      out.println("      <td align=\"right\" colspan=\"3\"><input type=\"submit\" value=\"开始\"/></td>");
      out.println("     </tr>\n     </form>\n    </table>");
      out.println("");
    }
    catch (Exception e) { out.println(e.toString()); }
  }


  void AdvMenu_Show (javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, javax.servlet.http.HttpSession session, javax.servlet.jsp.JspWriter out, String sAdvMenuErr, String sForm, String sAction, java.sql.Connection conn, java.sql.Statement stat) throws java.io.IOException {
    try {
  
      out.println("    <table style=\"\">");
      
      out.print("     <tr>");
      // Set URLs
      
      String fldField1 = "AdvSearch.jsp";
      // Show fields
      
      out.print("\n      <td style=\"background-color: #FFFFFF; border-width: 1\"><a href=\""+fldField1+"\"><font style=\"font-size: 10pt; color: #000000\">高级搜索</font></a></td>");

      out.println("\n     </tr>\n    </table>");
  
    }
    catch (Exception e) { out.println(e.toString()); }
  }


  void Total_Show (javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, javax.servlet.http.HttpSession session, javax.servlet.jsp.JspWriter out, String sTotalErr, String sForm, String sAction, java.sql.Connection conn, java.sql.Statement stat) throws java.io.IOException  {
  
    String sWhere = "";
    int iCounter=0;
    int iPage = 0;
    boolean bIsScroll = true;
    boolean hasParam = false;
    String sOrder = "";
    String sSQL="";
    String transitParams = "";
    String sQueryString = "";
    String sPage = "";
    int RecordsPerPage = 20;
    String sSortParams = "";
    String formParams = "";

      String pauthor="";
      String pcategory_id="";
      String pname="";
      String ppricemax="";
      String ppricemin="";


    formParams = "category_id=" + toURL(getParam( request, "category_id")) + "&name=" + toURL(getParam( request, "name")) + "&author=" + toURL(getParam( request, "author")) + "&pricemin=" + toURL(getParam( request, "pricemin")) + "&pricemax=" + toURL(getParam( request, "pricemax")) + "&"; 
    // Build WHERE statement
        
    //-- Check author parameter and create a valid sql for where clause
  
    pauthor = getParam( request, "author");
    if (pauthor != null && ! pauthor.equals("")) {
            
        hasParam = true;
        sWhere += "i.author like '%" + replace(pauthor, "'", "''") + "%'";
    }
    
    //-- Check category_id parameter and create a valid sql for where clause
  
    pcategory_id = getParam( request, "category_id");
    if ( ! isNumber (pcategory_id)) {
      pcategory_id = "";
    }
    
    if (pcategory_id != null && ! pcategory_id.equals("")) {
            
      if (! sWhere.equals("")) sWhere += " and ";
        hasParam = true;
        sWhere += "i.category_id=" + pcategory_id;
    }
    
    //-- Check name parameter and create a valid sql for where clause
  
    pname = getParam( request, "name");
    if (pname != null && ! pname.equals("")) {
            
      if (! sWhere.equals("")) sWhere += " and ";
        hasParam = true;
        sWhere += "i.name like '%" + replace(pname, "'", "''") + "%'";
    }
    
    //-- Check pricemax parameter and create a valid sql for where clause
  
    ppricemax = getParam( request, "pricemax");
    if ( ! isNumber (ppricemax)) {
      ppricemax = "";
    }
    
    if (ppricemax != null && ! ppricemax.equals("")) {
            
      if (! sWhere.equals("")) sWhere += " and ";
        hasParam = true;
        sWhere += "i.price<=" + ppricemax;
    }
    
    //-- Check pricemin parameter and create a valid sql for where clause
  
    ppricemin = getParam( request, "pricemin");
    if ( ! isNumber (ppricemin)) {
      ppricemin = "";
    }
    
    if (ppricemin != null && ! ppricemin.equals("")) {
            
      if (! sWhere.equals("")) sWhere += " and ";
        hasParam = true;
        sWhere += "i.price>=" + ppricemin;
    }
    
    if (hasParam) { sWhere = " WHERE (" + sWhere + ")"; }

  // Build full SQL statement
  
  sSQL = "select i.author as i_author, " +
    "i.category_id as i_category_id, " +
    "i.item_id as i_item_id, " +
    "i.name as i_name, " +
    "i.price as i_price " +
    " from items i ";
  
sSQL="select count(item_id) as i_item_id from items as i";
  sSQL = sSQL + sWhere + sOrder;

  String sNoRecords = "     <tr>\n      <td colspan=\"2\" style=\"background-color: #FFFFFF; border-width: 1\"><font style=\"font-size: 10pt; color: #000000\">没有条目</font></td>\n     </tr>";


  String tableHeader = "";
    
  
  try {
    out.println("    <table style=\"\">");
    
    out.println(tableHeader);

  }
  catch (Exception e) {}

  
  try {
    java.sql.ResultSet rs = null;
    // Open recordset
    rs = openrs( stat, sSQL);
    iCounter = 0;
    
    java.util.Hashtable rsHash = new java.util.Hashtable();
    String[] aFields = getFieldsName( rs );

    // Show main table based on recordset
    while ( rs.next() ) {

      getRecordToHash( rs, rsHash, aFields );
      String flditem_id = (String) rsHash.get("i_item_id");

      out.print("     <tr>\n      <td style=\"background-color: #FFFFFF; border-style: inset; border-width: 0\"><font style=\"font-size: 10pt; color: #CE7E00; font-weight: bold\">找到的条目:</font> </td><td style=\"background-color: #FFFFFF; border-width: 1\">"); out.print("<font style=\"font-size: 10pt; color: #000000\">"+toHTML(flditem_id)+"&nbsp;</font>");
      out.println("</td>\n     </tr>");
      out.println("     <tr>\n      <td colspan=\"2\" style=\"background-color: #FFFFFF; border-width: 1\">&nbsp;</td>\n     </tr>");
    
      iCounter++;
    }
    if (iCounter == 0) {
      // Recordset is empty
      out.println(sNoRecords);
    
      iCounter = RecordsPerPage+1;
      bIsScroll = false;
    }

    if ( rs != null ) rs.close();
    out.println("    </table>");
    
  }
  catch (Exception e) { out.println(e.toString()); }
}

  private static java.util.Vector _jspx_dependants;

  static {
    _jspx_dependants = new java.util.Vector(1);
    _jspx_dependants.add("/pages/Common.jsp");
  }

  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,
      			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');
      out.write('\n');


boolean bDebug = false;

String sAction = getParam( request, "FormAction");
String sForm = getParam( request, "FormName");
String sResultsErr = "";
String sSearchErr = "";
String sAdvMenuErr = "";
String sTotalErr = "";

java.sql.Connection conn = null;
java.sql.Statement stat = null;
String sErr = loadDriver();
conn = cn();
stat = conn.createStatement();
if ( ! sErr.equals("") ) {
 try {
   out.println(sErr);
 }
 catch (Exception e) {}
}


      out.write("            \r\n");
      out.write("<html>\r\n");
      out.write("<head>\r\n");
      out.write("<title>Book Store</title>\r\n");
      out.write("<meta name=\"GENERATOR\" content=\"YesSoftware CodeCharge v.1.2.0 / JSP.ccp build 05/21/2001\"/>\r\n");
      out.write("<meta http-equiv=\"pragma\" content=\"no-cache\"/>\r\n");
      out.write("<meta http-equiv=\"expires\" content=\"0\"/>\r\n");
      out.write("<meta http-equiv=\"cache-control\" content=\"no-cache\"/>\r\n");
      out.write("<meta http-equiv=\"Content-Type\" content=\"text/html; charset=ISO-8859-1\">\r\n");
      out.write("</head>\r\n");
      out.write("<body style=\"background-color: #FFFFFF; color: #000000; font-family: Arial, Tahoma, Verdana, Helveticabackground-color: #FFFFFF; color: #000000; font-family: Arial, Tahoma, Verdana, Helvetica\">\r\n");
      org.apache.jasper.runtime.JspRuntimeLibrary.include(request, response, "Header.jsp", out, true);
      out.write("\r\n");
      out.write(" <table>\r\n");
      out.write("  <tr>\r\n");
      out.write("   \r\n");
      out.write("   <td valign=\"top\">\r\n");
 Search_Show(request, response, session, out, sSearchErr, sForm, sAction, conn, stat); 
      out.write("\r\n");
      out.write("    \r\n");
      out.write("   </td>\r\n");
      out.write("   <td valign=\"top\">\r\n");
 AdvMenu_Show(request, response, session, out, sAdvMenuErr, sForm, sAction, conn, stat); 
      out.write("\r\n");
      out.write("    \r\n");
      out.write("   </td>\r\n");
      out.write("  </tr>\r\n");
      out.write(" </table>\r\n");
      out.write(" <table>\r\n");
      out.write("  <tr>\r\n");
      out.write("   <td valign=\"top\">\r\n");
 Total_Show(request, response, session, out, sTotalErr, sForm, sAction, conn, stat); 
      out.write("\r\n");
      out.write("    \r\n");
      out.write("   </td>\r\n");
      out.write("  </tr>\r\n");
      out.write(" </table>\r\n");
      out.write(" <table>\r\n");
      out.write("  <tr>\r\n");
      out.write("   <td valign=\"top\">\r\n");
 Results_Show(request, response, session, out, sResultsErr, sForm, sAction, conn, stat); 
      out.write("\r\n");
      out.write("    \r\n");
      out.write("   </td>\r\n");
      out.write("  </tr>\r\n");
      out.write(" </table>\r\n");
      org.apache.jasper.runtime.JspRuntimeLibrary.include(request, response, "Footer.jsp", out, true);
      out.write("\r\n");
      out.write("</body>\r\n");
      out.write("</html>\r\n");

      out.write('\r');
      out.write('\n');

if ( stat != null ) stat.close();
if ( conn != null ) conn.close();

      out.write('\r');
      out.write('\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);
    }
  }
}