使用JSF 2.0在页面加载时使用参数初始化后备Bean [英] Initializng a Backing Bean With Parameters on Page Load with JSF 2.0
问题描述
我正在尝试在页面加载时初始化备用bean.已经在寻找许多解决方案，但是大多数解决方案正在使用链接，按钮或根本没有参数.
I am trying to initialize a backing bean on page load. Already looked for many solutions, but most of them are using links,buttons or not having parameters at all.
场景: 客户登录到站点，然后应该在下一页上看到他的所有数据.
scenario: A customer logins to a site and then should see all of his data on the following page.
后备豆:
-
loginDetailsController -支持 登录过程.可以访问用户的 密码和用户名.支持豆 用于Login.xhtml.
loginDetailsController - to support login process. Can access user's password and username. Backing bean for Login.xhtml.
customerController -访问 其余的用户详细信息.它还具有一个customer_id字段.它是支持豆 用于Home.xhtml.可以完全从customer_id初始化customerController.
customerController - to access the rest of user details. It also has a customer_id field. It is the Backing bean for Home.xhtml. It is possible to initialize customerController entirely from customer_id.
在Home.xhtml上，可以通过以下方式获取customer_id:
On Home.xhtml it is possible to get customer_id this way:
#{loginDetailsController.customer_id}
有没有一种方法可以在页面加载时使用上述值初始化customerController?
Is there a way to initialize customerController with the above value on page load?
此致
丹尼尔
推荐答案
这是我解决的方法:
因为LoginDetailsController是会话作用域的-客户ID总是被初始化.
Because LoginDetailsController is session scoped - customer_id is always initialized.
所以-我添加了
@ManagedProperty(value="#{loginDetailsController.customer_id}")
private String customer_id;
加上-customer_id的获取器和设置器.
Plus - getter and setter for customer_id.
如Nikhil所说，在LoginDetailsController上-进行了一些更改.
然后，可以在Home.xhtml上使用#{customerController.customer_id}和其余的customerController初始化的customerController元素.
On LoginDetailsController, as Nikhil said - with a little change.
Then, it is possible to use #{customerController.customer_id} and the rest of customerController initialized elements of customerController on Home.xhtml.
谢谢大家！
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