Spring @ConfigurationProperties 不映射对象列表

swa*_*thu 5 java spring yaml spring-boot

我在使用 spring 属性映射器时遇到了奇怪的问题。我有 yml 包含值列表。我想将其转换为为什么要构建应用程序的对象列表。所以,我使用了@ConfigurationProperties。有了这个,我就可以映射简单的类型。当我使用它来复杂类型(对象列表)时,它失败了。也不例外,但是当我调试时,值列表为零。请在下面找到 yml 和 java 文件。我试过 spring 2.0.0,2.0.1,2.0.2,2.0.3 没有成功。任何人都可以有想法来解决它吗?

应用程序.yml

acme:
  list:
    - name: my name
      description: my description
    - name: another name
      description: another description
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AcmeProperties.java

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.PropertySource;
import org.springframework.stereotype.Component;

import java.util.ArrayList;
import java.util.List;

@Component
@ConfigurationProperties("acme")
@PropertySource("classpath:configuration/yml/application.yml")
public class AcmeProperties {

    private final List<MyPojo> list = new ArrayList<>();

    public List<MyPojo> getList() {
        return this.list;
    }

    static class MyPojo {
        private String name;
        private String description;

        public String getName() {
            return name;
        }

        public String getDescription() {
            return description;
        }
    }
}
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使用 setter 和 getter 方法:

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.PropertySource;
import org.springframework.stereotype.Component;

import java.util.List;

@Component
@ConfigurationProperties(prefix = "acme")
@PropertySource("classpath:configuration/yml/application.yml")
public class AcmeProperties {

    private List<MyPojo> list;

    public List<MyPojo> getList() {
        return list;
    }

    public void setList(List<MyPojo> list) {
        this.list = list;
    }

    public static class MyPojo {
        private String name;
        private String description;

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }

        public String getDescription() {
            return description;
        }

        public void setDescription(String description) {
            this.description = description;
        }
    }
}
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这个类的用法:

@Autowired
public HomeController(AppProperties appProperties, AcmeProperties acmeProperties) {
    this.appProperties = appProperties;
    this.acmeProperties = acmeProperties;
}
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Lip*_*ang 7

问题是PropertySource只支持属性文件,不能从yml文件中读取值。你可以像这样更新它:

@Component
@ConfigurationProperties("acme")
@PropertySource("classpath:/configuration/yml/test.properties")
class AcmeProperties {
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配置/yml/test.properties

acme.list[0].name=my name
acme.list[0].description=my description
acme.list[1].name=another name
acme.list[1].description=another description
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并且代码应该可以工作。