book_modify.jsp

JSP+SQL 网上图书销售系统源码+开题报告+毕业论文+答辩PPT

<%@ page contentType="text/html; charset=gb2312" %>
<%@ page session="true" %>
<%
if (session.getAttribute("admin")==null || session.getAttribute("admin")==""){
//	response.sendRedirect("error.htm");
} %>
<%@ page import="bookshop.book.*" %>

<jsp:useBean id="classlist" scope="page" class="bookshop.run.op_bookclass" />
<jsp:useBean id="book" scope="page" class="bookshop.run.op_book" />
<%
	String mesg = "";
	String submit = request.getParameter("Submit");
	int Id =0;
	if (submit!=null && !submit.equals("")){		
		if(book.getRequest(request)){
			if(book.update()){
				mesg = "图书资料修改成功！";
			} else {
				mesg = "数据库操作失败";
			}
		}else {
			mesg = "对不起，你提交的参数有错误";
		}
	}
	if (request.getParameter("id")==null || request.getParameter("id").equals("")) {
		mesg = "你要修改的数据参数错误！";
	} else {
		try {
			Id = Integer.parseInt(request.getParameter("id"));
			if (!book.getOnebook(Id)){
				mesg = "你要修改的数据不存在";
			}
		} catch (Exception e){
			mesg = "你要修改的数据参数错误！";
		}
	}
%>
<script language="javascript">
  function checkform() {
	if (document.form1.id.value=="") {
		alert("你要修改的数据不存在！");
		return false;
	}
	if (document.form1.bookname.value=="") {
		document.form1.bookname.focus();
		alert("图书名为空!");
		return false;
	}
	if (document.form1.author.value=="") {
		alert("作者名为空!");
		document.form1.author.focus();
		return false;
	}

	return true;

  }
</script>
<%@include file="/bookshop/inc/adm_head.inc"%>
<tr>
 <td align="center" width="77%"> 
        <p><br>
          <font size="3"><b>修改图书资料</b></font></p>
		  <% if(!mesg.equals("")){
			out.println(mesg);
		  } else {
			book modibook = (book) book.getBooklist().elementAt(0);			  
			%>
        <form name="form1" method="post" action="book_modify.jsp">
          <table width="90%" border="0" cellspacing="1" cellpadding="1">
            <tr> 
              <td align="right" width="35%">图书名称：</td>
              <td width="65%"> 
                <input type="text" name="bookname" maxlength="40" size="30" value="<%= modibook.getBookName() %>">
              </td>
            </tr>
            <tr> 
              <td align="right" width="35%">作者：</td>
              <td width="65%"> 
                <input type="text" name="author" maxlength="25" size="20" value="<%= modibook.getAuthor() %>">
              </td>
            </tr>
            <tr> 
              <td align="right" width="35%">出版社：</td>
              <td width="65%"> 
                <input type="text" name="publish" size="40" maxlength="150" value="<%= modibook.getPublish() %>">
              </td>
            </tr>
            <tr> 
              <td align="right" width="35%">所属类别：</td>
              <td width="65%"> 
                <select name="bookclass">
		<% if (classlist.seachBookClass()){
				for (int i=0;i<classlist.getClasslist().size();i++){
					bookclass bc = (bookclass) classlist.getClasslist().elementAt(i); %>
			      <option value="<%= bc.getId()%>" <% if (bc.getId() == modibook.getBookClass()) out.print("selected");%>><%= bc.getClassName() %></option>
		<%		}			
		}%>	
					
                </select>
              </td>
            </tr>
            <tr> 
              <td align="right" width="35%">书号：</td>
              <td width="65%"> 
                <input type="text" name="bookno" size="20" maxlength="30" value="<%= modibook.getBookNo() %>">
              </td>
            </tr>
            <tr> 
              <td align="right" width="35%">定价：</td>
              <td width="65%"> 
                <input type="text" name="price" size="8" maxlength="10" value="<%= modibook.getPrince() %>">
                元</td>
            </tr>
            <tr> 
              <td align="right" width="35%">总数量：</td>
              <td width="65%"> 
                <input type="text" name="amount" size="8" maxlength="10" value="<%= modibook.getAmount() %>">
                本</td>
            </tr>
            <tr> 
              <td align="right" width="35%" valign="top">图书封面：</td>
              <td width="65%"> 
                <input type="text" name="picture" size="8" maxlength="10" value="<%= modibook.getPicture() %>">
               
              </td>
            </tr>
            <tr> 
              <td align="right" width="35%" valign="top">图书简介：</td>
              <td width="65%"> 
                <textarea name="content" cols="40" rows="6"><%= modibook.getContent() %></textarea>
              </td>
            </tr>
            <tr> 
              <td align="right" width="35%">&nbsp;</td>
              <td width="65%"> 
				<input type="hidden" name="id" value="<%= Id %>">
                <input type="submit" name="Submit" value="提交" onclick="return(checkform());">
                <input type="reset" name="reset" value="重置">
              </td>
            </tr>
          </table>
        </form> 
	<% } %>
        <p>&nbsp;</p>
      </td>
</tr>
<%@include file="/bookshop/inc/adm_tail.inc"%>