Question

我试图通过url传递参数..并返回0.

这是ManagedBean ...一个带有两个变量的简单bean。

    import javax.faces.bean.ApplicationScoped;
    import javax.faces.bean.ManagedBean;
    import javax.faces.bean.ManagedProperty;
    import javax.faces.bean.RequestScoped;


    @ManagedBean
    @RequestScoped

    public class UserBean {

        @ManagedProperty("#{param.id}")

        private int id;
        private String name;
        public int getId() {
            System.out.println(id);
            return id;
        }
        public void setId(int id) {
            System.out.println(id);
            this.id = id;
        }
        public String getName() {
            return name;
        }
        public void setName(String name) {
            this.name = name;
        }
        public UserBean() {
            super();
        }

        public String createUrl()
        {
            return "yoga.xhtml?id=267";
        }


    }

以下是传递参数的xhtml页面...我使用commandButton重定向到带有查询参数的页面

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml"
            xmlns:f="http://java.sun.com/jsf/core"
            xmlns:h="http://java.sun.com/jsf/html">
<head>
</head>
<h:body>

<f:metadata>
        <f:viewParam name="id" value="#{userBean.id}" />
</f:metadata>

<h:form>
<h:commandButton action = "yoga.xhtml?id=345" value = "click here to pass the paramter">

</h:commandButton>
</h:form>

</h:body>
</html>

这就是我重定向页面以显示传递的ID

的地方

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml"
            xmlns:f="http://java.sun.com/jsf/core"
            xmlns:h="http://java.sun.com/jsf/html">


<h:body>

Passed Parameter is
<h1>#{userBean.id}</h1>


</h:body>
</html>

零返回获取jsf

0 个答案: