If i save any entity and again refresh page, it store again the same

[Atul Soni，修改在8 年前。]

Hi all !
I have the form which save any custom entity in database, and then again i refresh the page that time it again going to save , so can you please suggest me that how to prevent above stuff. Please answer me as soon as possible.

[David H Nebinger，修改在8 年前。]

Obviously you do not understand the portal specification.

At it's core, a portlet must deal with two phases:

1. Action phase - This is where your portlet should take actions such as updating a database or manipulating an entity or whatever.
2. Render phase - This is where your portlet should be rendering itself, but it should not be making any changes. The render phase can be called numerous times while a portlet is on a portal page and therefore it must not change anything.

If you're getting saves every time you refresh then you've let some of your action logic bleed into your render phase.

[Atul Soni，修改在8 年前。]

Thank you David for reply !

So i have to manage this manually right.?

[David H Nebinger，修改在8 年前。]

yes

[Amos Fong，修改在8 年前。]

Is your form doing a POST or GET? If it's post, most browsers will catch a refresh and stop you.

But, you'll want probably want to do a sendRedirect anyway back to a render URL after you process the action which I think Manish is hinting at.

[Manish Yadav，修改在8 年前。]

Hello ,
you have to set <action-url-redirect> value to true after <icon> tag inside liferay-portlet.xml which is set false by default.

for eg :-

<portlet>
<portlet-name>test-portlet</portlet-name>
<icon>/icon.png</icon>
<action-url-redirect>true</action-url-redirect>
<instanceable>false</instanceable>
<header-portlet-css>/css/main.css</header-portlet-css>
<header-portlet-javascript>/js/main.js</header-portlet-javascript>
<footer-portlet-javascript>
/js/main.js
</footer-portlet-javascript>

</portlet>