模板模式的应用

1：模板接口

public interface OuterGlideImportInterface {
    public void doImportGlide();
}

2：模板抽象方法

public abstract class AbstractOuterGlideImportCommand implements OuterGlideImportInterface {
    public Integer payWay;
    public String descInfo;

    public AbstractOuterGlideImportCommand(Integer payWay, String descInfo) {
        this.payWay = payWay;
        this.descInfo = descInfo;
    }

    @Override
    public void doImportGlide() {
        // 通用预检测
        preCheck(payWay);
        // 不同支付方式单独特殊处理模块
        importOuterGildeByExcelFile(descInfo);
        // 通用后检测
        afterCheck(payWay);
    }

    public void preCheck(Integer payWay) {
        String payName = "";
        switch (payWay) {
            case 1:
                payName = "支付宝";
                break;
            case 4:
                payName = "微信";
                break;
            case 5:
                payName = "银联";
                break;
            default:
                payName = "银联";
                break;
        }
        System.out.println(payName + "支付：预检测开始...");
    }

    public void afterCheck(Integer payWay) {
        String payName = "";
        switch (payWay) {
            case 1:
                payName = "支付宝";
                break;
            case 4:
                payName = "微信";
                break;
            case 5:
                payName = "银联";
                break;
            default:
                payName = "银联";
                break;
        }
        System.out.println(payName + "支付：后检测开始...");
    }

    public abstract void importOuterGildeByExcelFile(String descInfo);

}

3：三个具体子类方法

public class AliFileImportImpl extends AbstractOuterGlideImportCommand {

    public String preDescInfo;

    public AliFileImportImpl(Integer payWay, String descInfo, String preDescInfo) {
        super(payWay, descInfo);
        this.preDescInfo = preDescInfo;
    }

    @Override
    public void importOuterGildeByExcelFile(String descInfo) {
        System.out.println(preDescInfo + descInfo);
    }
}

public class WechatFileImportImpl extends AbstractOuterGlideImportCommand {

    public String preDescInfo;

    public WechatFileImportImpl(Integer payWay, String descInfo, String preDescInfo) {
        super(payWay, descInfo);
        this.preDescInfo = preDescInfo;
    }

    @Override
    public void importOuterGildeByExcelFile(String descInfo) {
        System.out.println(preDescInfo + descInfo);
    }
}

public class YinLianFileImportImpl extends AbstractOuterGlideImportCommand {

    public String preDescInfo;

    public YinLianFileImportImpl(Integer payWay, String descInfo, String preDescInfo) {
        super(payWay, descInfo);
        this.preDescInfo = preDescInfo;
    }

    @Override
    public void importOuterGildeByExcelFile(String descInfo) {
        System.out.println(preDescInfo + descInfo);
    }
}

4：测试

public class TestTemplate {
    public static void main(String[] args) {
        AliFileImportImpl aliFileImport = new AliFileImportImpl(1, "导入支付宝外部文件核心逻辑", "AliFileImportImpl.");
        aliFileImport.doImportGlide();

        WechatFileImportImpl wechatFileImport = new WechatFileImportImpl(4, "导入微信外部文件核心逻辑", "WechatFileImportImpl.");
        wechatFileImport.doImportGlide();

        YinLianFileImportImpl duxiaomFileImport = new YinLianFileImportImpl(5, "导入银联外部文件核心逻辑", "DuxiaomFileImportImpl.");
        duxiaomFileImport.doImportGlide();
    }
}