问题描述:

i searched everywhere and i'm trying everything, no success with a real exception..


i need to throw an exception so it 'ignore' everything after the method point (a single return wouldn't be enough cuz there are more methods above) so I found something like this:

throw new javax.faces.validator.ValidatorException(new FacesMessage(FacesMessage.SEVERITY_ERROR, ex instanceof ValidationException ? ex.getMessage() : MessageProvider.getMessage("sales.insert.error"), null));

EDIT 1

(This is done inside a void method in my ManagedBean (@ViewScoped), the method is called from a p:commandButton with a action="#{something}".

EDIT 2

The button:

<p:commandLink id="finalizarBtn" action="#{vendaMB.finalizarVenda()}" update="@form" process="@this, vendaList" styleClass="btn btn-regalo margin-side-5 btn-block" title="#{msg['sales.add']}" style="width: 500px; display: inline-block; margin: 20px 0px;" ><i class="fa fa-fw fa-2x fa-check"></i></p:commandLink>

And the complete method:

public void finalizarVenda() throws ValidatorException {

if(vendaProdutos.size() < 1) {

FacesUtil.addErrorMessage("vendaForm:produto", "");

return;

}

venda.setDataVenda(new Date());

try {

venda = vendaBO.incluir(venda, vendaProdutos);

} catch(Exception ex) {

venda.setDataVenda(null);

vendaBO.getDB().rollbackTransaction();

throw new javax.faces.validator.ValidatorException(new FacesMessage(FacesMessage.SEVERITY_ERROR, ex instanceof ValidationException ? ex.getMessage() : MessageProvider.getMessage("sales.insert.error"), null));

}

FacesUtil.addInfoMessage(MessageProvider.getMessage("sales.insert.success"));

novaVenda();

}

The messages component:

<p:messages id="messages" autoUpdate="true" globalOnly="true" showSummary="true" showDetail="false" escape="false" rendered="true" closable="true" />


i use this inside my try/catch block, it throws the exception as expected (the message) but it's never rendered at the view, if i manually add the FacesMessage to the FacesContext and throw the exception that is being catch, the same happens, no error messages at the view, example:

try {

//something

} catch (Exception ex) {

FacesContext.getCurrentInstance().addMessage(null, new FacesMessage("something"));

throw ex;

}

Both solutions doesn't work, i'm using JSF, PrimeFaces and Tomcat 8.

网友答案:

Throwing a ValidatorException from your managed bean will not set the message. Will the following work:

public void finalizarVenda() throws ValidatorException {
    if(vendaProdutos.size() < 1) {
        FacesUtil.addErrorMessage("vendaForm:produto", "");
        return;
    }
    venda.setDataVenda(new Date());
    try {
        venda = vendaBO.incluir(venda, vendaProdutos);
        FacesUtil.addInfoMessage(MessageProvider.getMessage("sales.insert.success"));
        novaVenda();
    } catch(Exception ex) {
        venda.setDataVenda(null);
        vendaBO.getDB().rollbackTransaction();
        FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_ERROR, ex instanceof ValidationException ? ex.getMessage() : MessageProvider.getMessage("sales.insert.error"), null));
    }
}

If the novaVenda() method can also throw an exception you might also want to wrap that in a try catch block and throw the caught exception.

相关阅读:
Top