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  • java中方便判断实体类每个参数是否为空

    public static boolean hasEmpty(Object object) throws Exception {
        Class<?> aClass = object.getClass();
        Field[] declaredFields = aClass.getDeclaredFields();
        for (Field field : declaredFields){
            String name = field.getName();
            name = name.substring(0, 1).toUpperCase() + name.substring(1);
    
            String type = field.getGenericType().toString();
            Method method = aClass.getMethod("get" + name);
            if (type.equals("class java.lang.String")) {
                String value = (String) method.invoke(object);
                if (value==null) {
                    return true;
                }
            }else if(type.equals("class java.lang.Integer")){
                Integer value = (Integer) method.invoke(object);
                if (value==null) {
                    return true;
                }
            }
        }
        return false;
    }

    该方法方便了对实体类中每个参数的判断,但是使用了反射,会影响程序运行效率。

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  • 原文地址:https://www.cnblogs.com/zhh2020/p/12884781.html
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