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在将JSF 1.2应用迁移到JSF 2.x时，遇到一个问题：如何在不进行验证的情况下重新渲染表单并保留已输入的数据。原始代码利用`ajaxSingle=false`, `immediate=true`和`reRender=myForm`实现这一功能。在JSF 2.x中，尝试了不同的方法，但都无法达到相同的效果，导致要么整个表单重新验证和渲染，要么丢失已提交的字段值。寻求解决在JSF 2.x中实现相同行为的方法。

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I have problem with converting this code from JSF 1.2 application to equivalent in JSF 2.x application

ajaxSingle="false"

immediate="true"

reRender="myForm">

value="this.value"

assignTo="#{bean.type}"

noEscape="true"/>

How this code snippet works.

Depending on selected value in #{bean.type}, my page display different fields. When User change "type" field the whole form is rerendered, but without form validation (ajaxSingle="false", immediate="true", reRender="myForm").

I don't want to validate filds here, I just want to set new value to the #{bean.type} and rerender the page in order to show different fields (depending on #{bean.type}). Thats why i need to manualy set #{bean.type} inside a4j:actionparam.

The nice feature about this code is that submited values in other fileds are preserved after rerendering.

I am trying to do the same thing in JSF 2.x with no success:

This:

will rerender whole form and I will lose submited values form other fields

This:

will submit, validate and rerender whole form (i want just submit without validation like in JSF 1.2)

This:

also does not work (work same as above)

So my question is how can I achive the same behavior in JSF 2.x ?

Thanks