在SpringBoot中将yaml映射到对象hashmap

Question

我正在尝试将yml文件映射到Spring boot应用程序中具有字符串键和PromotionPolicy值的HashMap，并使用默认的Spring boot实现来解析这些值，但当我尝试从映射中读取值时，PromotionPolicy对象只包含所有实例的默认值[0，false，false]。

我的yml是：

promotionPolicies : 
    policies: 
        P001NN:
            PromotionPolicy:
                expiryPeriodInDays: 16
                reusable: true
                resetExpiry: false
        P001YN:
            PromotionPolicy:
                expiryPeriodInDays:1
                reusable:true
                resetExpiry:false
        P001NY:
            PromotionPolicy:
                expiryPeriodInDays:1
                reusable:false
                resetExpiry:true

我拥有的模型是：

public class PromotionPolicy {

private int expiryPeriodInDays;
private boolean reusable;
private boolean resetExpiry;

public int getExpiryPeriodInDays() {
    return expiryPeriodInDays;
}
public void setExpiryPeriodInDays(int expiryPeriodInDays) {
    this.expiryPeriodInDays = expiryPeriodInDays;
}
public boolean isReusable() {
    return reusable;
}
public void setReusable(boolean reusable) {
    this.reusable = reusable;
}
public boolean isResetExpiry() {
    return resetExpiry;
}
public void setResetExpiry(boolean resetExpiry) {
    this.resetExpiry = resetExpiry;
}

}

组件java类如下：

@Configuration
@ConfigurationProperties(prefix = "promotionPolicies")
@EnableConfigurationProperties
@Component
public class PromotionPolicyConfig {

private Map<String, PromotionPolicy> policies = new HashMap<String, PromotionPolicy>();

public void setPolicies(Map<String, PromotionPolicy> policies) {
    this.policies = policies;
}

public Map<String, PromotionPolicy> getPolicies() {
    return policies;
}

}

尝试在此处显示值：

@RestController
@RequestMapping("/test")
public class LoyaltyServiceController {

@Autowired
PromotionPolicyConfig promotionPolicyConfig;

@RequestMapping(value = "/try")
public String tryThis() {
    for (Entry<String, PromotionPolicy> entry : promotionPolicyConfig.getPolicies().entrySet()) {
        System.out.print(entry.getKey() + " : ");
        System.out.print(entry.getValue() + " : ");
        System.out.print(entry.getValue().getExpiryPeriodInDays()  + " : ");
        System.out.print(entry.getValue().isResetExpiry()  + " : ");
        System.out.println(entry.getValue().isReusable()  + " : ");
    }
}

我的输出如下：

P001NN : com.expedia.www.host.loyalty.model.PromotionPolicy@63a1c99b : 0 : false : false : 
P001YN : com.expedia.www.host.loyalty.model.PromotionPolicy@7892b6b6 : 0 : false : false : 
P001NY : com.expedia.www.host.loyalty.model.PromotionPolicy@459928ab : 0 : false : false : 

而我希望结果包含yml中的值。我还尝试删除了我的yml中的“PromotionPolicy：”一行，但没有成功。

请求帮助了解如何将yml映射到自定义对象的映射中。

Answer 1

        promotionPolicies : 
          policies: 
            P001NN:
                    expiryPeriodInDays: 16
                    reusable: true
                    resetExpiry: false
            P001YN:
                    expiryPeriodInDays: 1
                    reusable: true
                    resetExpiry: false
            P001NY:
                    expiryPeriodInDays: 1
                    reusable: false
                    resetExpiry: true

Java代码：

        //Used lambok and spring annotation
        @Data
        @Configuration
        @ConfigurationProperties(prefix = "promotionPolicies")
        @NoArgsConstructor
        @AllArgsConstructor
        public class PromotionPolicies {
            private Map<String, Map<String, String>> policies = new HashMap<>();
        }

            

Answer 2

• 这对我有用

YML：

property-name: '{
  key1: "value1",
  key2: "value2"
}'

Spring防尘套：

  @Value("#{${property-name}}")
  private Map<String,String> myMap;

找到答案要感谢：https://relentlesscoding.com/2018/09/09/spring-basics-dynamically-inject-values-with-springs-value/

Answer 3

将您的yml更改为

promotionPolicies : 
  policies: 
    P001NN:
            expiryPeriodInDays: 16
            reusable: true
            resetExpiry: false
    P001YN:
            expiryPeriodInDays: 1
            reusable: true
            resetExpiry: false
    P001NY:
            expiryPeriodInDays: 1
            reusable: false
            resetExpiry: true