📄 input.jsp
字号:
<%@ page contentType="text/html;charset=gb2312" %>
<%@page import="java.io.*" %>
<%@page import="java.util.*" %>
<html>
<body>
<%!
Hashtable hashtable=new Hashtable();
synchronized void putGoodsToHashtable(String key,String list){
hashtable.put(key,list);
}
%>
<%
String name=request.getParameter("N");
String mount=request.getParameter("M");
if(name==null||mount==null){
name="";
mount="";
}else{
byte c[]=name.getBytes("ISO-8859-1");
name=new String(c);
byte d[]=mount.getBytes("ISO-8859-1");
mount=new String(d);
}
%>
<%
File f=new File("D:/jsp2007","goods_name.txt");
if(f.exists()){
try{
FileInputStream in=new FileInputStream(f);
ObjectInputStream object_in=new ObjectInputStream(in);
hashtable=(Hashtable)object_in.readObject();
object_in.close();
in.close();
if(hashtable.containsKey(name)){
session.setAttribute("name",name);
response.sendRedirect("del.jsp");
}else{
String s="#"+name+"#"+mount+"#";
putGoodsToHashtable(name,s);
try{
FileOutputStream o=new FileOutputStream(f);
ObjectOutputStream object_out=new ObjectOutputStream(o);
object_out.writeObject(hashtable);
object_out.close();
o.close();
}catch(Exception eee){
}
out.print("<br>"+"你已经将货物存入文件");
out.print("<br>"+"货物的货号："+name);
}
}catch(IOException e){
}
}else{
String s="#"+name+"#"+mount+"#";
putGoodsToHashtable(name,s);
try{
FileOutputStream o=new FileOutputStream(f);
ObjectOutputStream object_out=new ObjectOutputStream(o);
object_out.writeObject(hashtable);
object_out.close();
o.close();
out.print("<br>"+"你是第一个录入货物的人");
out.print("<br>"+"货物的货号："+name);
}catch(Exception eee){
}
}
%>
<table border="2">
<tr>
<td>
<form action="Example4_11.jsp" method="post">
<input type="submit" value="录入界面">
</form>
</td>
<td>
<form action="showgoods.jsp" method="post">
<input type="submit" value="查看界面">
</form>
</td>
<td>
<form action="del.jsp" method="post">
<input type="submit" value="修改界面">
</form>
</td>
</tr>
</table>
</body>
</html>⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -