实践讲解SpringBoot自定义初始化Bean+HashMap优化策略模式

package com.itcq.service.StrategyPattern;
 
public interface CommonService {
    String push(String key);
}

package com.itcq.service.StrategyPattern;
import org.springframework.stereotype.Service;

@Service
public class TestOne implements CommonService {
    @Override
    public String push(String key) {
        return "1.这是模式:" + key;
    }
}

package com.itcq.service.StrategyPattern;

import org.springframework.stereotype.Service;

@Service
public class TestTwo implements CommonService{
    @Override
    public String push(String key) {
        return "2.这是模式:"+key;
    }
}

package com.itcq.service.StrategyPattern;
import org.springframework.stereotype.Service;

@Service
public class TestThree implements CommonService{
    @Override
    public String push(String key) {
        return "3.这是模式:"+key;
    }
}

@Service
public class TestServiceTwo implements InitializingBean {

    @Autowired
    private ApplicationContext applicationContext;

    private HashMap<String, CommonService> hashmap = new HashMap<>();

    @Override
    public void afterPropertiesSet() {

        hashmap.put(StrategyTestEnum.STRATEGY_ONE.getTitle(), new TestOne());
        hashmap.put(StrategyTestEnum.STRATEGY_TWO.getTitle(), this.applicationContext.getBean(TestTwo.class));
        hashmap.put(StrategyTestEnum.STRATEGY_THREE.getTitle(), this.applicationContext.getBean(TestThree.class));
    }
}

@Getter
public enum StrategyTestEnum {
    STRATEGY_ONE("一", "模式一"),
    STRATEGY_TWO("二", "模式二"),
    STRATEGY_THREE("三", "模式三"),
    ;

    private String title;
    private String value;

    StrategyTestEnum(String title, String value) {
        this.title = title;
        this.value = value;
    }
}

public String testMethod2(String key) {

        CommonService commonService = hashmap.get(key);
        Assert.notNull(commonService, "参数错误,找不到模式");
        return commonService.push(key);
    }

@Autowired
    private TestServiceTwo testServiceTwo;

    @GetMapping("/test/two")
    public String testMethodTwo(@RequestParam(name = "key") String key) {

        return testServiceTwo.testMethod2(key);
    }