是否有一种方法在编译期间在Java类中使用maven属性 [英] Is there a way to use maven property in java class during compilation

问题描述

我只想在编译时在我的java类中使用maven占位符，以减少重复。

像这样：

pom.xml

 < properties& 
< some.version> 1.0< /some.version> 
< / properties> 
  

SomeVersion.java

  package some.company; 
 
 public class SomeVersion {
 
 public static String getVersion（）{
 return$ {some.version}
} 
 $提前感谢。
  
 h2_lin>解决方案
只需在src / main / resources文件中创建文件app.properties即可。
  application.version = $ {project.version} 
  
 > 
 
 
 < build> 
< resources> 
< resource> 
< directory> src / main / resources< / directory> 
< filtering> true< / filtering> 
< / resource> 
< / resources> 
  
 
 
 
 
只读属性文件
  ClassPathResource resource = new ClassPathResource（app.properties）; 
 p = new Properties（）; 
 InputStream inputStream = null; 
 try {
 inputStream = resource.getInputStream（）; 
 cloudProperties.load（inputStream）; 
} 
 catch（IOException e）{
 LOGGER.error（e.getMessage（），e）; 
} 
 finally {
 Closeables.closeQuietly（inputStream）; 
} 
  
并提供类似的方法
  public static String projectVersion（）{
 return p.getProperty（application.version）; 
} 
  
 
I just want to use maven placeholder in my java class at compile time in order to reduce duplication.

Something like that:

pom.xml
<properties>
  <some.version>1.0</some.version>
</properties>
SomeVersion.java
package some.company;

public class SomeVersion {

    public static String getVersion() {
        return "${some.version}"
    }

}
Thanks in advance.
解决方案
simply create file app.properties in src/main/resources with content like this
application.version=${project.version}
then enable maven filtering like this
<build>
    <resources>
        <resource>
            <directory>src/main/resources</directory>
            <filtering>true</filtering>
        </resource>
    </resources>


That's all - in app code just read properties file
    ClassPathResource resource = new ClassPathResource( "app.properties" );
    p = new Properties();
    InputStream inputStream = null;
    try {
        inputStream = resource.getInputStream();
        cloudProperties.load( inputStream );
    }
    catch ( IOException e ) {
        LOGGER.error( e.getMessage(), e );
    }
    finally {
        Closeables.closeQuietly( inputStream );
    }
and provide method like this
    public static String projectVersion() {
       return p.getProperty( "application.version" );
    }


                        
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