使用Jboss7,Load Resource返回null [英] Load Resource returns null with Jboss7
问题描述
如何使用Jboss7.1从java代码加载图像等资源?
这曾经用于Jboss4:
this.getClass()。getClassLoader()。getResourceAsStream(/ myapp / includes / images / image1.png);
现在返回null。
什么现在使用Jboss7加载java代码中的资源是最佳做法吗?
我做了一些测试:
URL url = this.getClass()。getResource();
System.out.println(url);
url = this.getClass()。getResource(../../../);
System.out.println(url);
url = this.getClass()。getResource(../../../../);
System.out.println(url);
url = this.getClass()。getResource(../../../../../);
System.out.println(url);
url = this.getClass()。getResource(includes);
System.out.println(url);
13:33:49,143 INFO [stdout](http - 127.0.0.1-8080-1)vfs:/ C:/Eclipse/apps/jboss-as-7.1.1.Final/standalone /deployments/my-ea.ear/my-web.war/WEB-INF/classes/com/xxx/yyy/beans/jsf/
13:33:49,144 INFO [stdout](http - 127.0。 0.1-8080-1)vfs:/ C:/Eclipse/apps/jboss-as-7.1.1.Final/standalone/deployments/my-ea.ear/my-web.war/WEB-INF/classes/com/ xxx /
13:33:49,150 INFO [stdout](http - 127.0.0.1-8080-1)jar:file:/ C:/Eclipse/apps/jboss-as-7.1.1.Final/modules /javax/activation/api/main/activation-1.1.1.jar!/com/
13:33:49,151 INFO [stdout](http - 127.0.0.1-8080-1)文件:/ C: /Eclipse/apps/jboss-as-7.1.1.Final/modules/sun/jdk/main/service-loader-resources/
13:33:49,152 INFO [stdout](http - 127.0.0.1- 8080-1)null
as 记录(不使用 jboss-deployment-structure.xml
file):
- 为配置文件创建一个模块(
jboss-as-7 / modules /com/yourcompany/configuration/main/module.xml
):
<?xml version =1.0encoding =UTF-8?>
< module xmlns =urn:jboss:module:1.1name =com.mycompany.configuration>
< resources>
< resource-root path =。/>
< / resources>
< / module>
- 向模块添加属性:
jboss-as-7 /
modules /
com /
yourcompany /
configuration /
main /
module.xml
settings.properties
other-settings.xm
- 将模块添加到
CLASSPATH
使用MANIFEST.MF
条目:
清单 - 版本:1.0
依赖关系:com.mycompany.configuration
- 从CLASSPATH加载属性文件:
< pre class =lang-java prettyprint-override> InputStream settingsStream =
getClass()。getClassLoader()。getResourceAsStream(settings.properties);
我必须创建一个名为 com / mycompany / main的模块文件夹
并添加所有图像。因此,至少在 JBOSS_HOME
中,它位于WAR之外。然后我可以使用以下方法加载图像:
URL imgUrl = this.getClass()。getClassLoader()。getResource(myimage。 JPG);
How do I load resources like images from the java code with Jboss7.1?
This used to work with Jboss4:
this.getClass().getClassLoader().getResourceAsStream("/myapp/includes/images/image1.png");
Now this returns null.
What is best practice for loading resources in java code now with Jboss7?
I did some testing:
URL url = this.getClass().getResource("");
System.out.println(url);
url = this.getClass().getResource("../../../");
System.out.println(url);
url = this.getClass().getResource("../../../../");
System.out.println(url);
url = this.getClass().getResource("../../../../../");
System.out.println(url);
url = this.getClass().getResource("includes");
System.out.println(url);
13:33:49,143 INFO [stdout] (http--127.0.0.1-8080-1) vfs:/C:/Eclipse/apps/jboss-as-7.1.1.Final/standalone/deployments/my-ea.ear/my-web.war/WEB-INF/classes/com/xxx/yyy/beans/jsf/
13:33:49,144 INFO [stdout] (http--127.0.0.1-8080-1) vfs:/C:/Eclipse/apps/jboss-as-7.1.1.Final/standalone/deployments/my-ea.ear/my-web.war/WEB-INF/classes/com/xxx/
13:33:49,150 INFO [stdout] (http--127.0.0.1-8080-1) jar:file:/C:/Eclipse/apps/jboss-as-7.1.1.Final/modules/javax/activation/api/main/activation-1.1.1.jar!/com/
13:33:49,151 INFO [stdout] (http--127.0.0.1-8080-1) file:/C:/Eclipse/apps/jboss-as-7.1.1.Final/modules/sun/jdk/main/service-loader-resources/
13:33:49,152 INFO [stdout] (http--127.0.0.1-8080-1) null
As documented on the JBoss community wiki (without using a jboss-deployment-structure.xml
file):
- Create a module for the configuration file (
jboss-as-7/modules/com/yourcompany/configuration/main/module.xml
):
<?xml version="1.0" encoding="UTF-8"?>
<module xmlns="urn:jboss:module:1.1" name="com.mycompany.configuration">
<resources>
<resource-root path="."/>
</resources>
</module>
- Add properties to the module:
jboss-as-7/
modules/
com/
yourcompany/
configuration/
main/
module.xml
settings.properties
other-settings.xm
- Add the module to the
CLASSPATH
using aMANIFEST.MF
entry:
Manifest-Version: 1.0
Dependencies: com.mycompany.configuration
- Load a properties file from the CLASSPATH:
InputStream settingsStream =
getClass().getClassLoader().getResourceAsStream("settings.properties");
I had to create a module folder called com/mycompany/main
and add all the images in there. So this sits outside the WAR at least though within JBOSS_HOME
. Then I could load the image using:
URL imgUrl = this.getClass().getClassLoader().getResource("myimage.jpg");
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