使用p:commandButton jsf提交表单

不应该伤害你。如果你在里面做昂贵的东西,你应该把它移到构造器那里, @PostConstruct 或问题bean的操作方法,或引入延迟加载或阶段嗅探。

// In Constructor..
public Bean() {
    constructed = getItSomehow();
}

// ..or @PostConstruct..
@PostConstruct
public void init() {
    constructed = getItSomehow();
}

// ..or action method..
public String submit() {
    constructed = getItSomehow();
    return "outcome";
}

// ..or lazy loading..
public boolean getConstructed() {
    if (constructed == null) constructed = getItSomehow();
    return constructed;
}

// ..or phase sniffing (this one updates during render response only).
public boolean getConstructed() {
    if (FacesContext.getCurrentInstance().getRenderResponse()) constructed = getItSomehow();
    return constructed;
}

• Why JSF calls getters multiple times?