Question

我试过的是

First.jsp
   <form name = "button" style="VISIBILITY: visible">
                    <table cellspacing=5 cellpadding=5 bgcolor="lightblue" colspan=2 rowspan=2 align="center">
     <TR> <TD> <INPUT TYPE="button" onclick="sub1();hide();" VALUE="DOWNLOAD"></TD>
    <script>
     function popup()
                    {
                        popupWindow = window.open('delete','name','width=300,height=100');
                        popupWindow.focus();
                        window.close();     
                    }

delete.jsp

<%
String Pdfpath=   session.getAttribute("pdfpath").toString();
 File f =new File(Pdfpath);

 Boolean flag=false;
  if(f.exists())
  {
    flag=f.delete();
  }
  else 
  {
    out.println("File not found to delete");
  }

%>
<html>
<head>
<title>Delete file in java</title>
</head>

<body>
<%
 if(flag==true)
 {
  out.println("File Has Bean deleted successfully");
 }
 else
 {
  out.println("Error: Unable To Delete The File");
 }
%>
</body>
</html>

从我的第一个jsp我将一些路径传递给另一个delete.jsp按钮点击。这个jsp删除我目录中的文件并发出消息。我希望该消息来自同一个消息框中窗口不应该来的时间。

我不喜欢在javascript函数中添加所有删除代码，所以我要去另一个jsp。是否可以隐藏窗口并在delete.jsp页面中仅显示确认消息框。我需要一些帮助。

由于

Answer 1

您可以使用以下代码作为delete.jsp;）

<%
    String Pdfpath = session.getAttribute("pdfpath").toString();
    File f = new File(Pdfpath);

    Boolean flag = false;
    if (f.exists()) {
        flag = f.delete();
    } else {
        out.println("File not found to delete");
    }
%>
<html>
    <head>
        <title>Delete file in java</title>
    </head>

    <body>
        <%
            String message = "";
            if (flag == true) {
                message = "File Has Bean deleted successfully";
            } else {
                message = "Error: Unable To Delete The File";
            }
        %>
        <script type="text/javascript">
            alert('<%=message%>');
        </script>
    </body>
</html>

如何在jsp中添加消息框而不是新窗口

1 个答案: