部署JSF组合组件以供共享使用 [英] Deploy JSF composite components for shared use
问题描述
我正在开发一个计划在未来变得非常大的Java EE项目，我希望尽可能多地共享代码。这不仅包括Java代码，还包括UI元素的代码。我考虑基于明确定义的主题（如用户管理，税收，产品）开发企业组件，这些主题基于消息，bean等进行交互。我还考虑为所有这些组件提供一些托管bean和JSF组合，以提供一些基本功能，供以后在Web UI中使用。这就是上下文......
I work on a Java EE project which is planned to become quite large in future and I want to share as much code as possible. This included not only Java code, but also code for UI elements. I think about developing enterprise components based on clear defined subjects (like user administration, taxes, products) which interact on basis of messages, beans and so on. I also think about giving all these components some managed beans and JSF composites to provide some basic functionality for later use in the web UI. That's the context...
为了使其具体化：假设我有一个EAR（um.ear）用于用户管理。在其中我有一些用于数据库连接的JPA实体（jpa.jar），我有一些企业bean用于基本功能，如身份验证（ejb.jar）。另外，我想在（jsf.jar）中放入另一个jar文件，其中包含一个托管bean LoginController，用于复合组件（带有用户名和密码的输入）login_box.xhtml，我希望稍后将其放入我的Web前端到不同的位置，取决于实际页面。
To make it concrete: Let's say I have an EAR (um.ear) for user management. Within it I have some JPA entities for database connectivity (jpa.jar) and I have some enterprise beans for the basic functionality like authentication (ejb.jar). Additionally, I want to put another jar file in (jsf.jar) which contains a managed bean LoginController for use with a composite component (with an input for username and password) login_box.xhtml which I want to place later into my web front end to different locations, depended on the actual page.
login_box.xhtml：
The login_box.xhtml:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:composite="http://java.sun.com/jsf/composite"
xmlns:e="http://java.sun.com/jsf/composite/login">
<h:head>
<title>Login Box</title>
</h:head>
<h:body>
<composite:interface>
</composite:interface>
<composite:implementation>
<h:outputStylesheet library="css" name="login.css" target="head" />
<div class="login_box">
<h:form>
<h:messages />
<h:panelGrid columns="2" columnClasses="rightAlign,leftAlign">
<h:outputText value="Email address:" />
<h:inputText label="Email address" value="#{LoginController.email}"
required="true" size="8">
<f:validator validatorId="emailAddressValidator" />
<f:validateLength minimum="5" maximum="128" />
</h:inputText>
<h:outputText value="Password:" />
<h:inputText label="Password" value="#{LoginController.password}"
required="true" size="8" />
</h:panelGrid>
<h:commandButton action="${LoginController.login()}"
value="Login..." />
</h:form>
</div>
</composite:implementation>
</h:body>
</html>
在我的主应用程序中，我想使用JSF模板生成页面，我想放置根据需要将标签登录到页面中。
In my main application I want to work with JSF templates to generate the pages and I want to put the login box with the tag into the pages as needed.
当前设置为：
jsf.jar inside um.ear:
|- META-INF/
| |- faces-config.xml
| |- web.xml
| |- sub-web.xml
| \- resources
| \- login
| \- login_box.xhtml
\- com
|- inside it the managed bean classes
调用xhtml看起来像：
The calling xhtml looks like:
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:e="http://java.sun.com/jsf/composite/login">
<h:head>
<title>Title</title>
</h:head>
<h:body>
<e:login_box />
</h:body>
</html>
当我以这种方式使用它时，我没有收到任何错误，在我生成的HTML中我看到了而不是想要的登录框。
When I use it that way, I do not get any errors and in my resulting HTML I see the instead of the wanted login box.
当我在一个EAR中执行此操作并将托管bean和JSF内容放入WAR（类转移到WEB中）时EAR里面的-INF / classes和WEB-INF / resources的资源一切正常。但是，我如何部署托管bean和JSF内容以供以后在其他EAR或JAR中使用？我读到/META-INF/faces-config.xml足以强制容器扫描JSF内容。
When I all do this within one EAR and I put the managed beans and the JSF stuff into a WAR (the classes are moved into WEB-INF/classes and the resources to WEB-INF/resources) inside the EAR everything works fine. But, how can I deploy the managed beans and the JSF stuff for later use in other EARs or JARs? I read that the /META-INF/faces-config.xml would be enough to force the container to scan for JSF stuff.
我的faces-config.xml：
My faces-config.xml:
<?xml version="1.0" encoding="UTF-8"?>
<faces-config
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_2_0.xsd"
version="2.0">
</faces-config>
我使用JBoss 6.1-Final，我在JAR中尝试了所有可能的位置，这对我来说是合乎逻辑的。我把类和资源目录放到root'/'，/ META-INF和WEB-INF。所有这一切都行不通。有没有人有建议，这里有什么问题？
I work with JBoss 6.1-Final and I tried all possible locations inside the JAR which was logical for me. I put the classes and the resource directory to root '/', to /META-INF and to WEB-INF. All of this did not work. Does anyone has suggestions, what is wrong here?
推荐答案
JAR必须在 / WEB里面结束WAR的-INF / lib （可以反过来成为EAR的一部分）。
That JAR has to end up inside /WEB-INF/lib of WAR (which can in turn be part of EAR).
你的JAR文件结构没问题。
Your JAR's file structure is fine.
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