多值的JSF托管属性 [英] JSF managed property for multivalues

问题描述

正如BalusC建议的，作为对此问题的答案，我想创建一个如下的托管属性:

As suggested by BalusC as an answer to this question, I wanto to create a managed property like this:

@ManagedProperty("#{paramValues.freetext}")
private String[] ftValues;

public String[] getFtValues(){ 
    return ftValues;
}

public void setFtValues(String[] values){
    ftValues = values;
}

在我的项目中，每个受管bean的声明和设置都在faces-config.xml文件中完成.按照建议将注释放入代码中，不会给我带来任何结果. ftValues始终为null，即使我有一个或多个<input name="freetext"> 可能因为主要配置技术使用XML文件而没有考虑注释吗?

In my project every managed bean declaration and settings has done in the faces-config.xml file. Putting the annotation in the code as suggested, doesn't bring me any result. ftValues is always null, even if I have one or more <input name="freetext"> Is it possible that the annotation is not take into consideration because the main configuration technique use the XML file?

如何将ManagedProperty声明放入faces-config.xml?我尝试添加

How can I put the ManagedProperty declaration into the faces-config.xml? I tried adding

<managed-property>
    <property-name>ftValues</property-name>
    <property-class>java.lang.String[]</property-class>
    <value>#{paramValues.freetext}</value>
</managed-property>

在适当的托管bean部分中，但由于该错误而崩溃

in the appropriate managed bean section, but it crashes with this error

找不到托管bean myBean的bean或属性类java.lang.String [].

Bean or property class java.lang.String[] for managed bean myBean cannot be found.

推荐答案

实际上，每当您在faces-config.xml中声明bean时，注释都将被忽略.如果出于某些不清楚的原因，实际上不能从faces-config.xml删除bean，那么您需要删除<property-class>来解决问题. JSF可以完美地自己解决这个问题.

Indeed, the annotations are ignored whenever you declare the bean in faces-config.xml. If removing the bean from faces-config.xml is really not an option for some unclear reason, then you need to remove the <property-class> to fix the problem. JSF can perfectly figure it by itself.

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