JBoss EAP6/AS7/WildFly: How to Use Properties Files Outside Your Archive--reference
Introduction
I’d like to preface this post with, really, all properties files should be inside your application archive. However, there are occasions, where you do need properties files more easily accessible — where a modification doesn’t require breaking open the EAR/WAR, making the modification, then rebuilding or repackaging the EAR/WAR.
With previous versions of EAP and AS, the conf directory was on the class path and you could drop your properties files in conf/props and be happy. EAP6 and AS7 (now WildFly) do not have the configuration directory on the classpath however, and it really should not be added. So what is the solution? Modules!
These newer versions (at the time or writing this) of JBoss take an OSGi approach to class loading where everything is considered a module. A module can import (require the dependency) or export (allow other to depend) resources.
You can write a simple module to make resources (such as properties files) available to an application that declares it as a dependency. This is the approach that we will take
Writing the Module
Writing the module is pretty simple. The first thing we will do is create our module directory structure in the modules directory. The module name should follow the standard Java style package naming. Each name in the package (separated by full-stops ‘.’) should have its own directory. See below for a module that will be named com.jyore.examples.settings:
1
2
3
|
EAP_HOME/modules/com/jyore/examples/settings
|
Now, there will be subdirectories under the settings directory, if you want to use different slots, but to keep it simple, we will use the default main slot. So create a single subdirectory called main inside the settings directory.
1
2
3
|
EAP_HOME/modules/com/jyore/examples/settings/main
|
The module descriptor will be placed inside the main directory. Add the following:
1
2
3
4
5
6
7
8
|
<?xml version="1.0" encoding="UTF-8"?>
<module xmlns="urn:jboss:module:1.1" name="com.jyore.examples.settings">
<resources>
<resource-root path="."/>
</resources>
</module>
|
This descriptor will put all of the resources under the main directory at the root of the class path for us when we declare the dependency. This can be done one of two ways:
a) MANIFEST.MF Dependencies: entry
1
2
3
|
Dependencies: com.jyore.examples.settings
|
b) jboss-deployment-structure.xml entry
1
2
3
4
5
6
7
8
9
10
|
<?xml version="1.0" encoding="UTF-8"?>
<jboss-deployment-structure>
<deployment>
<dependencies>
<module name="com.jyore.examples.settings"/>
</dependencies>
</deployments>
</jboss-deployment-structure>
|
If using the jboss-deployment-structure.xml method, this file is placed in the WEB-INF directory of a WAR or the META-INF directory of an EAR.
Testing the Module
No ‘How To’ is complete without a test case. So, let’s see how a simple web app can use this module to get properties.
This example will build a simple web app that will dump the contents of the properties files to a table in a web page.
Java Code – ModuleReader.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
package com.jyore.examples.settings;
import java.io.IOException;
import java.util.Properties;
import java.util.Set;
public class ModuleReader {
private static final String PROPERTIES_FILENAME = "application_settings.properties"
private static Properties settings = null;
public static void loadSettings() {
settings = new Properties();
try {
settings.load(Thread.currentThread().getContextClassLoader().getResourceAsStream(PROPERTIES_FILENAME);
} catch (IOException e) {
e.printStackTrace();
}
}
public static String getProperty(String key) {
if(settings == null) {
return null;
} else {
return settings.getProperty(key);
}
}
public static Set<Object> getKeys() {
if(settings == null) {
return null;
} else {
return settings.keySet();
}
}
}
|
Now for the jsp’s
index.jsp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
<%@page import="com.jyore.examples.settings.ModuleReader,java.util.set"%>
<html>
<head>
<title>Module Settings Reader</title>
<style>
table, th, td {
border : solid 1px black;
}
</style>
</head>
<body>
<h1>Module Settings Reader</h1>
<button onclick="loadProps();">Click to load properties</button>
<%
Set<Object> keys = ModuleReader.getKeys();
if(keys == null) {
out.print("<span style=\"color:red\">properties file not loaded</span><br/>");
} else {
out.print("<span style=\"color:green\">properties loaded</span><br/><table><tr><td><b>Key</b></td><td><b>Value</b></td></tr>");
String value;
for(Object str : value) {
String key = (String) str;
value = ModuleReader.getProperty(key);
out.print("<tr><td>"+key+"</td><td>"+value+"</td></tr>");
}
out.print("</table>);
}
%>
<script type="text/javascript">
function loadProps() {
window.location.href = "loadProps.jsp";
}
</script>
</body>
</html>
|
loadProps.jsp
1
2
3
4
5
6
7
|
<%@page import="com.jyore.examples.settings.ModuleReader"%>
<%
ModuleReader.loadSettings();
response.sendRedirect("index.jsp");
%>
|
My WAR Structure (propertyReader.war)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
|
propertyReader.war
|-- WEB-INF
| |-- classes
| | `-- com
| | `-- jyore
| | `-- examples
| | `-- settings
| | `-- ModuleReader.class
| |-- web.xml
| `-- jboss-deployment-structure.xml
|-- index.jsp
`-- loadProps.jsp
|
and the module
1
2
3
4
5
6
7
8
9
10
|
modules
`-- com
`-- jyore
`-- examples
`-- settings
`-- main
|-- module.xml
`-- application_settings.properties
|
Now we deploy the application and go to http://localhost:8080/propertyReader/
You will see in red text that the properties are not yet loaded, so click the button. This will go to the loadProps page, load the properties file, and redirect back. This time, the properties within application_settings.xml will be displayed within a table on the page.
Open that properties file and edit it by adding another value. Click the button on the web page again and see that the table updates with your addition.
原文地址:http://blog.jyore.com/?p=58
JBoss EAP6/AS7/WildFly: How to Use Properties Files Outside Your Archive--reference的更多相关文章
- jboss eap6出现Tags_$$_javassist_26 cannot be cast to javassist.util.proxy.ProxyObject的解决办法
使用了spring,hibernate.部署在jboss eap6中时,查询时出现java.lang.ClassCastException: com.vteba.product.base.model. ...
- 转:Red Hat JBoss团队发布WildFly 8,全面支持Java EE 7并包含全新的嵌入式Web服务器
原文来自于:http://www.infoq.com/cn/news/2014/02/wildfly8-launch Red Hat的JBoss部门今天宣布WildFly 8正式发布.其前身是JBos ...
- JBOSS EAP6.2.0的下载安装、环境变量配置以及部署
JBOSS EAP6.2.0的下载安装.环境变量配置以及部署 JBoss是纯Java的EJB(企业JavaBean)server. 第一步:下载安装 1.进入官网http://www.jboss.or ...
- JBoss、Tomcat、JBoss EAP、JBoss AS、wildfly,JBoss EAP安装部署,JBoss各个版本下载,JBoss允许远程访问
感谢: https://www.cnblogs.com/invlong/p/5983334.html https://blog.csdn.net/mooncarp/article/details/78 ...
- JBOSS EAP6 系列二 客户端访问位于EAR中的EJB时,jndi name要遵守的规则
EJB 的 jndi语法(在整个调用远程ejb的过程中语法的遵循是相当重要的) 参见jboss-as-quickstarts-7.1.1.CR2\ejb-remote\client\src\main\ ...
- jboss eap6.1(1)
最近决定把公司的项目从jboss3.x迁移出来,先试着摸索一下最新的jboss服务器,从jboss官网上下了一份jboss-eap-6.1,然后找资料准备学习,同时将此次迁移过程记录下来,以备后续复习 ...
- jboss eap6.1(4)(部署应用)
1.添加应用war包 手动部署,添加war包到standalone\deployments下,手工创建一个文件,如war包名称是a.war,创建一个a.war.deployed文件,内容随意. 2. ...
- jboss eap6.1(5)(ejb升级)
以前的项目是基于ejb2.x做的,ejb的配置文件为ejb-jar.xml和jboss.xml,现在把这个项目移到新版本服务器中的时候,报解析ejb-jar错误. 查阅许多资料才找到解决办法,原来jb ...
- jboss相关的术语
1 jboss eap java ee application server.red hat官方版本. 2 jboss as/wildfly java ee application server的社区 ...
随机推荐
- 一站式远程页面调试工具spy-debugger 2.0,已支持HTTPS
项目名称: spy-debugger 项目地址:https://github.com/wuchangming/spy-debugger 关于spy-debugger npm Build Status ...
- iOS开发工程师笔试题
iOS开发工程师笔试题 1. Object-c的类可以多重继承么?可以实现多个接口么?Category是什么?重写一个类的方式用继承好还是分类好?为什么? Object-c的类不可以多重继承:可以 ...
- 发一下关于公司的HOUSE OF HELLO 关于假货网站的声明吧
HOUSE OF HELLO,致力于为新时代潮流女性提供优质时尚的手袋,公司核心价值观是:坚韧开拓市场,真诚铸就成长,行动改变命运,激情成就梦想.公司从上到下的员工,都富于激情的努力工作,以积极,主动 ...
- 架设wordpress再vps上的 一些感想总结
日本vps.樱花系列 配置: 2cpu+1G内存+100G硬盘 系统 第一次我把默认的centos 给换了..原因就是,不会linux.而且我主要用.net 感觉 mono也行.但是linux不会. ...
- BZOJ 1563 诗人小G
Description Input Output 对于每组数据,若最小的不协调度不超过\(10^{18}\),则第一行一个数表示不协调度若最小的不协调度超过\(10^{18}\),则输出"\ ...
- 关于 Boolean 的转换
前端经常喜欢这样写 if else if(value) { //do something } javascript 能智能的把任何类型的 value 转换成 boolean 来进行 if 判断 转换是 ...
- Unity3D内存释放
Unity3D内存释放 最近网友通过网站搜索Unity3D在手机及其他平台下占用内存太大. 这里写下关于Unity3D对于内存的管理与优化. Unity3D 里有两种动态加载机制:一个是Resourc ...
- 趁有空,再了解一下GROOVY中关于类的通例
简单的,浅浅的看一下. 想起了RUBY里覆盖类的方法... 在GROOVY里也同样提到了,比如TOSTRING... (其实,在我以前的经验中,从未用过这些东东..:)) 这样用了PACKAGE,显得 ...
- keil 51启动代码
Startup code:启动代码. 在Keil中,启动代码在复位目标系统后立即被执行.启动代码主要实现以下功能: (1) 清除内部数据存储器 (2) 清除外部数据存储器 (3) 清除外部页存储器 ( ...
- Compare Version Number
package cn.edu.xidian.sselab.string; /** * * @author zhiyong wang * title: Compare Version Numbers ...