pretty-config，在重定向到视图之前执行方法

Question

int pretty-config.xml JSF

在进入pretty-config中指示的视图之前，我需要做一些事情（调用bean方法）。...

<url-mapping id="queryUser">
    <pattern value="/queryUser" />
    <view-id value="/path/to/queryUser.xhtml" />    
</url-mapping>

<url-mapping id="doRegisterTipProcess">
    <pattern value="/doRegisterTipProcess" />
    <view-id value="HOW_CALL_registerTipBean.redirectQueryUser()_METHOD_BEFORE_queryUser" />    
</url-mapping>

<url-mapping id="doRegisterCitProcess">
    <pattern value="/doRegisterCitProcess" />
    <view-id value="HOW_CALL_registerCitBean.redirectQueryUser()_METHOD_BEFORE_queryUser" />    
</url-mapping>

现在，当调用redirectQueryUser方法时，它指示谁是主叫方，以便与selectedUser返回以执行某些处理。

@ManagedBean(name = "registerTipBean")
@ViewScoped
public Class RegisterTipBean{

    private String selectedUser;

    @PostConstruct
    public void init() {
        selectedUser = Faces.getFlashAttribute("selectedUser");
        if (selectedUser !=null) {
            System.out.println("RegisterTipBean.selectedUser:" + selectedUser);
        }
    }


    //Indicate where Return TIP
    public void redirectQueryUser() {
        try {
            Faces.setFlashAttribute("whoCall", "RegisterTipBean");
            FacesContext.getCurrentInstance().getExternalContext().redirect("queryUser");
        } catch (IOException e) {

        }
    }
}


@ManagedBean(name = "registerCitBean")
@ViewScoped
public Class RegisterCitBean{

    private String selectedUser;

    @PostConstruct
    public void init() {
        selectedUser = Faces.getFlashAttribute("selectedUser");
        if (selectedUser !=null) {
            System.out.println("RegisterCitBean.selectedUser:" + selectedUser);
        }
    }

    //Indicate where Return CIT
    public void redirectQueryUser() {
        try {
            Faces.setFlashAttribute("whoCall", "RegisterCitBean");
            FacesContext.getCurrentInstance().getExternalContext().redirect("queryUser");
        } catch (IOException e) {

        }
    }
}

doProcess方法 QueryUserBean “搜索” selectedUser，然后返回Bean调用程序。

@ManagedBean(name = "queryUserBean")
@ViewScoped
public class QueryUserBean {

    private String whoCall;
    private String selectedUser;

    @PostConstruct
    public void init() {
        whoCall = Faces.getFlashAttribute("whoCall");
    }



    public void doProcess() {
        selectedUser = selectedUser + "found!"
        if (Objects.equals(whoCall, "RegisterTipBean")) {
            Faces.setFlashAttribute("selectedUser", selectedUser);
            try {
                FacesContext.getCurrentInstance().getExternalContext().redirect("registerTip");
            } catch (IOException e) {

            }
        }
        if (Objects.equals(whoCall, "RegisterCitBean")) {
            Faces.setFlashAttribute("selectedUser", selectedUser);
            try {
                FacesContext.getCurrentInstance().getExternalContext().redirect("registerCit");
            } catch (IOException e) {

            }
        }
    }
}

在转到视图之前如何执行该方法？