使用已保存的Cookie填写表单 [英] Fill a form with saved cookies
问题描述
我有一个动作类,像这样保存我的cookie:
I have an action class that saves my cookies like this:
public String execute() {
// Save to cookie
Cookie name = new Cookie("name", userInfo.getName() );
name.setMaxAge(60*60*24*365); // Make the cookie last a year!
servletResponse.addCookie(name);
}
如果我提交表单,我可以在浏览器上看到已创建并保存。当用户提交时,他们被重定向到一个新的页面,一个页面,包含他们刚刚创建的所有存储的信息。
If I submit my form, I can see the cookies on the browser that has been created and saved. When the user submits, they get redirected to a new page, a page with all the stored information that they just created.
我希望用户能够返回提交页面,并查看他们刚刚提交的表单中的所有信息。是否可以使用Struts2,通过使用保存的Cookie并获取表单填写旧数据?
I want the user to be able to go back to the submit page and see all the information in the forms that they just submitted. Is it possible to do this with Struts2, by using the saved Cookies and get the form to fill in with the old data?
这是我的形式:
<s:textfield
label="Name"
name="name"
key="name"
tooltip="Enter your Name here"/>
推荐答案
要发送Cookie,您可以使用 cookie-provider 拦截器。它允许您通过实现 CookieProvider
在操作中填充Cookie。要将此拦截器应用于操作配置,您可以覆盖拦截器配置
To send cookie you can use a cookie-provider interceptor. It allows you to populate cookies in the action via implementing CookieProvider
. To apply this interceptor to the action configuration you can override the interceptors config
<action ... >
<interceptor-ref name="defaultStack"/>
<interceptor-ref name="cookieProvider"/>
...
</action>
CookieProvider
public class MyAction extends ActionSupport implements CookieProvider {
@Override
public Set<Cookie> getCookies(){
Set<Cookie> cookies = new HashSet<>();
Cookie name = new Cookie("name", userInfo.getName() );
name.setMaxAge(60*60*24*365); // Make the cookie last a year!
name.setPath("/"); //Make it at root.
cookies.add(name);
return cookies;
}
}
In the form
<s:set var="name">${cookie["name"].value}</s:set>
<s:textfield
label="Name"
name="name"
value="%{#name}"
tooltip="Enter your Name here"/>
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