使用jaxb进行xml到bean的转换

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import javax.xml.bind.Marshaller;
import java.lang.reflect.Field;
//监听生成xml文件过程
public class MarshallerListener extends Marshaller.Listener {

public static final String BLANK_CHAR = "";

@Override
public void beforeMarshal(Object source) {
    super.beforeMarshal(source);
    Field[] fields = source.getClass().getDeclaredFields();
    for (Field f : fields) {
        f.setAccessible(true);
        try {
            System.out.println(f.getType() + f.getName());
            if (f.getType() == String.class && f.get(source) == null) {
                f.set(source, BLANK_CHAR);
            }else if(!isBaseType(f)&& f.get(source) != null){
                beforeMarshalClass(f.get(source));
            }
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }
    }
}

private void beforeMarshalClass(Object source) {
    // TODO Auto-generated method stub
    Field[] fields = source.getClass().getDeclaredFields();
    for (Field f : fields) {
        f.setAccessible(true);
        try {
            if (f.getType() == String.class && f.get(source) == null) {
                f.set(source, BLANK_CHAR);
            }else if(!isBaseType(f) && f.get(source) != null){
                System.out.println(f.getType()+f.getName());
                beforeMarshalClass(f.get(source));
            }
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }
    }
}

/**
* 判断object是否为基本类型
* @param object
* @return
*/
public static boolean isBaseType(Field f) {
    System.out.println(f.getType());
    System.out.println(String.class);
    System.out.println(f.getType() == String.class);
    if (f.getType() == Integer.class ||
        f.getType() == Byte.class ||
        f.getType() == Long.class ||
        f.getType() == Double.class ||
        f.getType() == String.class ||
        f.getType() == Float.class ||
        f.getType() == Character.class ||
        f.getType() == Short.class ||
        f.getType() == Boolean.class) {
        return true;
    }
    return false;
}

}

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