如何在多个战争之间共享一个 jsf 错误页面 [英] how to share a jsf error page between multiple wars

问题描述

我正在尝试在多个战争之间共享一个错误页面 (error.xhtml).它们都在一个大耳朵应用程序中，并且都使用一个通用的 jar 库，我想把它放在这里.

I'm trying to share an error page (error.xhtml) between multiple wars. They are all in a big ear application, and all use a common jar library, where I'd like to put this.

错误页面应该使用 web.xml，或者更好的 web-fragment.xml，并且会被声明为标准的 java ee 错误页面.

The error page should use web.xml, or better web-fragment.xml, and would be declared as a standard java ee error page.

实际的 EAR 结构:

Actual EAR structure:

EAR
 EJB1
 EJB2
 WAR1 (using CommonWeb.jar)
 WAR2 (using CommonWeb.jar)
 WAR3 (using CommonWeb.jar)

将错误页面放在 META-INF/resources 下是行不通的，因为它不是资源.

Just putting the error page under META-INF/resources won't work, as it's not a resource.

我希望在每个战争文件中配置尽可能少.

I'd like to have as little as possible to configure in each war file.

我使用的是 Glassfish 3.1，但希望尽可能使用 Java EE 6 标准.

I'm using Glassfish 3.1, but would like to use Java EE 6 standards as much as possible.

推荐答案

您需要创建一个自定义的ResourceResolver 从类路径解析资源，将其放入公共 JAR 文件中，然后在 web-fragment.xml 中声明 的 JAR(或在 WAR 的 web.xml 中).

You need to create a custom ResourceResolver which resolves resources from classpath, put it in the common JAR file and then declare it in web-fragment.xml of the JAR (or in web.xml of the WARs).

启动示例:

package com.example;

import java.net.URL;

import javax.faces.view.facelets.ResourceResolver;

public class FaceletsResourceResolver extends ResourceResolver {

    private ResourceResolver parent;
    private String basePath;

    public FaceletsResourceResolver(ResourceResolver parent) {
        this.parent = parent;
        this.basePath = "/META-INF/resources"; // TODO: Make configureable?
    }

    @Override
    public URL resolveUrl(String path) {
        URL url = parent.resolveUrl(path); // Resolves from WAR.

        if (url == null) {
            url = getClass().getResource(basePath + path); // Resolves from JAR.
        }

        return url;
    }

}

在 web-fragment.xml 或 web.xml

<context-param>
    <param-name>javax.faces.FACELETS_RESOURCE_RESOLVER</param-name>
    <param-value>com.example.FaceletsResourceResolver</param-value>
</context-param>

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