shop--8.商品类别--辅助工具

ProductCategoryEnum

public enum ProductCategoryEnum {
    SUCCESS(1, "创建成功"), INNER_ERROR(-1001, "操作失败"), EMPTY_LIST(-1002, "添加数少于1");

    private int state;
    private String stateInfo;

    private ProductCategoryEnum(int state, String stateInfo) {
        this.state = state;
        this.stateInfo = stateInfo;
    }

    public int getState() {
        return state;
    }

    public String getStateInfo() {
        return stateInfo;
    }

    /**
     * 依据传入的state返回相应的enum值
     */
    public static ProductCategoryEnum stateof(int state){
        for(ProductCategoryEnum s : values()){
            if(s.getState() == state){
                return s;
            }
        }
        return null;
    }
}

　　

ProductCategoryException

public class ProductCategoryException extends RuntimeException{
    private static final long serialVersionUID = 3278462788156006845L;

    public ProductCategoryException(String message) {
        super( message );
    }
}

　　

ProductCategoryExecution

public class ProductCategoryExecution {
    private int state;
    private String stateInfo;
    private List<ProductCategory> productCategoryList;

    public ProductCategoryExecution() {
    }

    //操作失败时，使用的构造器
    public ProductCategoryExecution(ProductCategoryEnum stateEnum ){
        this.state = stateEnum.getState();
        this.stateInfo = stateEnum.getStateInfo();
    }

    //操作成功时，使用的构造器
    public ProductCategoryExecution(ProductCategoryEnum stateEnum, List<ProductCategory> productCategoryList){
        this.state = stateEnum.getState();
        this.stateInfo = stateEnum.getStateInfo();
        this.productCategoryList = productCategoryList;
    }

    public int getState() {
        return state;
    }

    public void setState(int state) {
        this.state = state;
    }

    public String getStateInfo() {
        return stateInfo;
    }

    public void setStateInfo(String stateInfo) {
        this.stateInfo = stateInfo;
    }

    public List<ProductCategory> getProductCategoryList() {
        return productCategoryList;
    }

    public void setProductCategoryList(List<ProductCategory> productCategoryList) {
        this.productCategoryList = productCategoryList;
    }
}