在BackingBean中将值从表单提交到方法中，而无需变量 [英] Submit value from form to method without variable in the BackingBean

问题描述

我有一个简单的表单，其中用户输入用户名和密码，在bean中检查值是否正确.

I have a simple form where a user enters his username and password, in the bean it's checked if the values are correct.

.xhtml

<p:outputLabel value="Username:" />
<p:inputText value="#{fooBean.username}" />

<p:outputLabel value="Passwort:" />
<p:password value="#{fooBean.password}" />

<p:commandButton value="Login" action="#{fooBean.check()}" />

fooBean

public void check() {
    if(username == "name" && password == "pass") {
        // do stuff
    }
}

现在我的问题是，是否有一种方法可以将inputTexts的值提交给函数check(String username, String password)，而不必在bean中声明字段.

Now my question is if there is a way to submit the values of the inputTexts to a function check(String username, String password), without having to declare the fields in the bean.

推荐答案

简单地:

<p:outputLabel value="Passwort:" />
<p:password value="#{password}" />

<p:commandButton value="Login" action="#{fooBean.check(username, password)}" />

可以，但是扩大范围可能更好:

will work, but maybe enlarging scope is better:

<p:outputLabel value="Passwort:" />
<p:password value="#{viewScope.password}" />

<p:commandButton value="Login" 
    action="#{fooBean.check(viewScope.username, viewScope.password)}" />

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