产生ENUM方法

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public static void main(String arg[]){
       generateAttributeEnum(Person.class);
   }
   public static void generateAttributeEnum(Class<?> cls) {
        Field[] fields = cls.getDeclaredFields();
        StringBuilder enumBuild = new StringBuilder("public enum ATTRIBUTE {\n");
        StringBuilder attributeName = null;
        for(Field field : fields){
           if(Modifier.isStatic(field.getModifiers())) continue;
           attributeName = new StringBuilder();
           for (int i = 0; i < field.getName().length(); i++) {
              if(Character.isUpperCase(field.getName().charAt(i))) {
                 attributeName.append("_"+field.getName().charAt(i));
              }else{
                 attributeName.append(Character.toUpperCase(field.getName().charAt(i)));
              }
           }
           enumBuild.append("   "+attributeName+"(\""+field.getName()+"\"),\n");
        }
        enumBuild.replace(enumBuild.lastIndexOf(","), enumBuild.lastIndexOf(",")+1, ";");
        System.out.println(enumBuild.toString());
        System.out.println("   public String value;");
        System.out.println("   ATTRIBUTE(String value) {");
        System.out.println("       this.value = value;");
        System.out.println("   };");
        System.out.println("};");
    }

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