我可以防止Byte Buddy發出註釋的默認值嗎？

Question

有沒有辦法阻止Byte Buddy爲我添加的註釋發出默認值？使用下面的示例，基於構建插件，我希望看到在baz字段中@XmlAttribute註釋的結果字節代碼中省略了多餘的required和namespace值。

富/ Bar.java：

package foo; 

import javax.xml.bind.annotation.XmlAttribute; 

public class Bar { 
    @XmlAttribute(name = "qux") 
    public String qux; 
} 

淨/ bytebuddy /測試/ SimplePlugin.java：

...  
public class SimplePlugin implements Plugin { 
...  
    @Override 
    public DynamicType.Builder<?> apply(DynamicType.Builder<?> builder, TypeDescription typeDescription) { 
     return builder.defineField("baz", String.class, Visibility.PUBLIC) 
      .annotateField(AnnotationDescription.Builder.ofType(XmlAttribute.class) 
       .define("name", "baz") 
       .build()); 
    } 
} 

富/ Bar.class：

// 
// Source code recreated from a .class file by IntelliJ IDEA 
// (powered by Fernflower decompiler) 
// 

package foo; 

import javax.xml.bind.annotation.XmlAttribute; 

public class Bar { 
    @XmlAttribute(
     name = "qux" 
    ) 
    public String qux; 
    @XmlAttribute(
     name = "baz", 
     required = false, 
     namespace = "##default" 
    ) 
    public String baz; 

    public Bar() { 
    } 
} 

Answer 1

字節好友可以被配置爲跳過默認的註釋值。但是，配置Byte Buddy不在實現Plugin接口的轉換構建插件的範圍之內。 Byte Buddy API提供了一個單獨的EntryPoint接口，該接口可以用來控制Byte Buddy的初始化。

淨/ bytebuddy /測試/ SimpleEntryPoint.java：

package net.bytebuddy.test; 

... 

public class SimpleEntryPoint implements EntryPoint { 
    @Override 
    public ByteBuddy getByteBuddy() { 
     return new ByteBuddy() 
      .with(AnnotationValueFilter.Default.SKIP_DEFAULTS); 
    } 

    ... 
} 

的pom.xml：

... 
    <plugin> 
      <groupId>net.bytebuddy</groupId> 
      <artifactId>byte-buddy-maven-plugin</artifactId> 
      <executions> 
       <execution> 
        <goals> 
         <goal>transform</goal> 
        </goals> 
       </execution> 
      </executions> 
      <configuration> 
       <initialization> 
        <entryPoint>net.bytebuddy.test.SimpleEntryPoint</entryPoint> 
       </initialization> 
       <transformations> 
        <transformation> 
         <plugin>net.bytebuddy.test.SimplePlugin</plugin> 
        </transformation> 
       </transformations> 
      </configuration> 
     </plugin> 
... 

富/ Bar.class：

// 
// Source code recreated from a .class file by IntelliJ IDEA 
// (powered by Fernflower decompiler) 
// 

package foo; 

import javax.xml.bind.annotation.XmlAttribute; 

public class Bar { 
    @XmlAttribute(
     name = "qux" 
    ) 
    public String qux; 
    @XmlAttribute(
     name = "baz" 
    ) 
    public String baz; 

    public Bar() { 
    } 
}