OutputText与转换器不工作-为什么

Question

我试图转换一个Outputtext -简单地说:

<h:form>
    <h:inputText value="#{someBean.name}"/>
    <h:outputText value="#{someBean.name}" converter="com.java.ee.jsf.TextToStringConverter"/>
    <h:commandButton value="submit" action="#{someBean.doSecond()}"/>
</h:form>

ConverterClass:

@FacesConverter("com.java.ee.jsf.TextToStringConverter")
    public class TextToStringConverter implements Converter {
        @Override
        public Object getAsObject(FacesContext context, UIComponent component, String value) {
            System.out.println("String: " + component);
            return value;
        }
        @Override
        public String getAsString(FacesContext context, UIComponent component, Object value) {
            return (String) value;
        }
    }

SomeBean-class:

@Model
public class SomeBean {
    private String name;
    private int id;
    private Double someNumber;
    private Date someDate;
blic int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public Double getSomeNumber() {
        return someNumber;
    }
    public void setSomeNumber(Double someNumber) {
        this.someNumber = someNumber;
    }
    public Date getSomeDate() {
        System.out.println(someDate);
        return someDate;
    }
    public void setSomeDate(Date someDate) {
        this.someDate = someDate;
    }
public void doSecond() {
        System.out.println("doSecond");
        System.out.println("name: " + name);
        System.out.println("id: " + id);
        System.out.println("someNumber: " + someNumber);
    }
}

我试图用<h:inputtext/>输入一个字符串到Bean属性name，并用<h:outputtext/>打印出来，但用TextToStringConverter转换。但是转换器似乎从来没有被调用过——我错过了什么吗?

Answer 1

您定义了输出文本的转换器。因此，应该调用getAsString()方法。在此方法中没有System.out.println。也许这就是为什么您认为没有调用转换器的原因。

代码对我来说似乎是正确的