如何在facelets taglibs中使用bean而不是静态类？

Question

<?xml version="1.0" encoding="UTF-8"?>
<facelet-taglib
        xmlns="http://xmlns.jcp.org/xml/ns/javaee"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
        http://xmlns.jcp.org/xml/ns/javaee/web-facelettaglibrary_2_2.xsd"
        version="2.2">
    <namespace>http://my/security/facelets/tags</namespace>

    <function>
        <function-name>isRegion</function-name>
        <function-class>my.NovaFaceletsAuthorizeTagUtils</function-class>
        <function-signature>boolean isRegion()</function-signature>
    </function>

Answer 1

不，但是可以委托给bean方法。例如，如下所示：

public static boolean isRegion() {
    getCurrentApplicationContext().getBean(RegionService.class).isRegion();
}

获取当前applicationcontext的方法多种多样，具体取决于引导它的方式以及您有多少个applicationcontext。有关相关技术的概述，请参见：

• Spring获取当前应用程序上下文

@Component
public class RegionService {
    private static RegionService instance;

    public RegionService() {
        instance = this;
    }

    public static RegionService getInstance() {
        return instance;
    }
}