How to open a html document in browser like a pdf instead of downloading from visual force page

Question

From a visual force page on a button click i am opening documents using following javascript function

<button type="button" class="wpsButtonText" onclick="javascript:download()">I Accept</button>


 function download()
    {
        var params = getParams();
        if (params["id"])
        {

            location.href = "https://test.salesforce.com/sfc/servlet.shepherd/version/download/" + unescape(params["id"]);
        }

        return(0);
    }

But the problem is of type pdf it is opening in the same tab instead of downloading but when the document is of type html it is directly downloading without any preview

For PDF

For HTML

is there any approach to make even html to open directly in the browser without downloading

Answer 1

A workaround for above issue.

You can create a VF page and get the document body blob data and convert into string. Now display in VF page. like below example

public class test1 {
public String strHTML    {get;set;}

public test1() {

       Document doc = [Select d.Body From Document d where Id= '01590000009jQTB'];
       Blob bodyBlob = doc.Body;
       strHTML = bodyBlob.toString();
    }
}

VF Page

<apex:page controller="test1" showHeader="false" standardStylesheets="false">
    <apex:form >
        <apex:outputText escape="false" value="{!strHTML}"/> 

    </apex:form>
</apex:page>