2011-01-24 177 views

回答

10

你可以做類似的被用於以下弄清楚JAXB IMPL:

import javax.xml.bind.JAXBContext; 

public class Demo { 

    private static final String MOXY_JAXB_CONTEXT = "org.eclipse.persistence.jaxb.JAXBContext"; 
    private static final String METRO_JAXB_CONTEXT = "com.sun.xml.bind.v2.runtime.JAXBContextImpl"; 

    public static void main(String[] args) throws Exception { 
     JAXBContext jc = JAXBContext.newInstance(Root.class); 

     String jaxbContextImpl = jc.getClass().getName(); 
     if(MOXY_JAXB_CONTEXT.equals(jaxbContextImpl)) { 
      System.out.println("EclipseLink MOXy"); 
     } else if(METRO_JAXB_CONTEXT.equals(jaxbContextImpl)) { 
      System.out.println("Metro"); 
     } else { 
      System.out.println("Other"); 
     } 
    } 

} 

你可以得到有關的EclipseLink版本信息從它正在使用的版本類:

import org.eclipse.persistence.Version; 

public class VersionDemo { 

    public static void main(String[] args) { 
     System.out.println(Version.getVersion()); 
    } 
} 
+0

非常感謝!這一切工作正常。 – basZero 2011-01-25 09:42:27

0

基於Blaise Doughan的回答,稍作修改(JUnit測試)。請注意,Metro實現的包似乎已經發生了變化(可能在Java6u4左右)。還沒有自檢界面?傷心!

import org.junit.Test; 

public class JaxbVersion { 

    @Test 
    public void printJaxbInformation() throws JAXBException { 
     String MOXY = "org.eclipse.persistence.jaxb"; 
     String METRO_EARLY = "com.sun.xml.bind.v2"; 
     String METRO_LATE = "com.sun.xml.internal.bind.v2"; // since JDK 6u4 (?) 
     String CAMEL = "org.apache.camel.converter.jaxb";  
     Class<?> clazz = SomeJaxbGeneratedClass.class; 
     // http://docs.oracle.com/javaee/7/api/javax/xml/bind/JAXBContext.html 
     JAXBContext jc = JAXBContext.newInstance(clazz); 
     String jcClassName = jc.getClass().getName(); 
     String res; 
     if (jcClassName.startsWith(MOXY)) { 
      res = "EclipseLink MOXy"; 
     } else if (jcClassName.startsWith(METRO_EARLY) || jcClassName.startsWith(METRO_LATE)) { 
      res = "Oracle Metro"; 
     } else if (jcClassName.startsWith(CAMEL)) { 
      res = "Apache Camel"; 
     } else { 
      res = "Unknown"; 
     } 
     res = res + "(" + jcClassName + ")";   
     System.out.println(res); 
    } 

} 
相關問題