/**
* @param productForm
* @return 返回一个包含错误信息的字符串列表 若返回为 空 则表示输入合法
*/
public List<String> validate(ProductForm productForm) {
List<String> errors = new ArrayList<>();
String name = productForm.getName();
if (name == null || name.trim().isEmpty()) {
errors.add("Product must have a name");
}
String price = productForm.getPrice();
if (price == null || price.trim().isEmpty()) {
errors.add("Product must have a price");
} else {
try {
Float.parseFloat(price);
} catch (NumberFormatException e) {
errors.add("Invalid price value");
}
}
return errors;
}