枚举转化为JSON字符串

淡淡的烟草味﹌ 2022-06-17 13:56 451阅读 0赞

近期在项目上与ERP做接口服务时,需要大量用到类别码,JAVA使用枚举值来存储类别码.

下面分享下将枚举值反射成JSON串

/**
         * 通过反射机制,将枚举值转化为json串
         * @param enumValues
         * @return
         * @throws IllegalAccessException
         * @throws InvocationTargetException
         */
        public static String toJson(Enum<?>[] enumValues) throws IllegalAccessException, InvocationTargetException {
            StringBuffer buffer=new StringBuffer("[");
            boolean obj1st=true;
            for (Object obj : enumValues) {
                if(obj1st){
                    obj1st=false;
                }else{
                    buffer.append(",");
                }
                buffer.append("{");
    
                Method[] methods = obj.getClass().getMethods();
                boolean method1st=true;
                for (int i = 0; i < methods.length; i++) {
    
                    Method method = methods[i];
                    //获取枚举值的get方法
                    if (method.getName().startsWith("get") && method.getParameterTypes().length == 0 && !method.getName().contains("Class")) {
                        //处理逗号
                        if(method1st){
                            method1st=false;
                        }else{
                            buffer.append(",");
                        }
                        //将get方法的get去掉,并且首字母小写
                        String name = method.getName().replace("get","");
                        buffer.append("\"" + name.substring(0, 1).toLowerCase() + name.substring(1) + "\":\"");
                        buffer.append(method.invoke(obj)+"\"");
                    }
                }
                buffer.append("}");
            }
            buffer.append("]");
            return buffer.toString();
        }