StrategyFactory.java

package com.hugnew.sps.services.pay.strategy;

import com.hugnew.sps.enums.PayType;

import java.util.HashMap;
import java.util.Map;

/**
 * 支付策略工厂
 * Created by Martin on 2016/7/01.
 */
public class StrategyFactory {

    private static Map<Integer, PayStrategy> strategyMap = new HashMap<>();

    static {
        strategyMap.put(PayType.ALIPAY_WEB.value(), new AlipayWebStrategy());
        strategyMap.put(PayType.ALIPAY_APP.value(), new AlipayAppStrategy());
        strategyMap.put(PayType.ALIPAY_WAP.value(), new AlipayWapStrategy());
        strategyMap.put(PayType.UNION_WEB.value(), new UnionWebStrategy());
        strategyMap.put(PayType.UNION_WAP.value(), new UnionWapStrategy());
        strategyMap.put(PayType.UNION_APP.value(), new UnionAppStrategy());
        strategyMap.put(PayType.PSBC_WEB.value(), new PSBCWebStragegy());
        strategyMap.put(PayType.PSBC_WAP.value(), new PSBCWapStragegy());
        strategyMap.put(PayType.CEB_WEB.value(), new CEBWebStragegy());
        strategyMap.put(PayType.CEB_WAP.value(), new CEBWapStragegy());
        strategyMap.put(PayType.CEB_GATEWAY_WEB.value(), new CEBGatewayPayStrategy());
        strategyMap.put(PayType.CEB_GATEWAY_WAP.value(), new CEBGatewayPayWapStrategy());
        strategyMap.put(PayType.WECHAT_APP.value(), new WechatPayAppStrategy());
    }

    private StrategyFactory() {
    }

    private static class InstanceHolder {
        public static StrategyFactory instance = new StrategyFactory();
    }

    public static StrategyFactory getInstance() {
        return InstanceHolder.instance;
    }

    public PayStrategy creator(Integer type) {
        return strategyMap.get(type);
    }

}