How to open doc file in ms word in web application [closed]

Question

I am creating a web application where I would be downloading word (.doc) file from database. What my client wan't is once I click the "Open File A" button/ link, it should download word file automatically (at some path) and get it open in MS Word. My client don't want users to download the file and double click on it and open.

Can we do it?

For web application, below are the technologies I am using.

1. Glassfish server
2. JSF 2.0
3. Java
4. MySQL

I believe, in web application, we can't have access over client machine so we can't open the file using MS Word. What we can achieve is download the file at path provided by user. Please suggest me if I am wrong.

Any idea would be greatly appreciated.

Note: Using Java, I tried using Desktop class, however this would run on webserver which is not client machine, so it won't help me.

Update 1

In simple way, I have a button called "Open File A" on web-browser. When I click on it, it should do below steps.

1. Download that file from DB (say abc.doc).
2. Open this file in Microsoft Office Word (By Browser and not by person)

I am able to do first part, concern is second part.

Answer 1

As far as I know, automatically opening Office documents can only be done in Internet Explorer: I use a SharePoint site which, when used in IE, only requires a simple security warning to be confirmed before immediately opening a document in Word. Unfortunately, I'm not sure of what code it uses. I'll have a look now and update this answer if I find out. It seems to be using VBScript to create an ActiveX object:

<script type="text/vbscript">
On Error Resume Next
Set opener = CreateObject("SharePoint.OpenDocuments.3")
If Not IsObject(opener) Then
    Set opener = CreateObject("SharePoint.OpenDocuments.2")
    If Not IsObject(opener) Then
        Set opener = CreateObject("SharePoint.OpenDocuments.1")
        If Not IsObject(opener) Then
            ' the feature isn't available; the file will need to be downloaded like normal
        End If
    End If
End If
</script>

Now you can use its ViewDocument function, which simply takes the file's URL as an argument. Here's a function that attempts to open the file in its appropriate Office app and falls back to the normal download method if that doesn't work:

// (JavaScript)
function openDocument(url) {
    try {
        opener.ViewDocument(url);
    } catch (error) {
        location = url;
    }
}