在resources下创建my.yaml文件,“-”用来表示数组类型,一定要注意空格。
my: contents: - id: 12121 name: nadasd - id: 3333 name: vfffff
创建配置类对象,在类上添加@Component、@PropertySource、@ConfigurationProperties注解。
@Component是将该类交由spring管理,@PropertySource用来指定配置文件及解析Yaml格式,@ConfigurationProperties是将解析后的配置文件属性自动注入该类的属性。
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 @PropertySource(value = "classpath:my.yaml", factory = YamlPropertiesSourceFactory.class) @ConfigurationProperties(prefix = "my") public class MyProperties { private List<content> contents = new ArrayList<>(); public List<content> getContents() { return contents; } public void setContents(List<content> contents) { this.contents = contents; } } class content { private String id; private String name; public String getId() { return id; } public void setId(String id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } }
@PropertySource注解是Spring用于加载配置文件,@PropertySource属性如下:
name:默认为空,不指定Spring自动生成
value:配置文件
ignoreResourceNotFound:没有找到配置文件是否忽略,默认false,4.0版本加入
encoding:配置文件编码格式,默认UTF-8 4.3版本才加入
factory:配置文件解析工厂,默认:PropertySourceFactory.class 4.3版本才加入,如果是之前的版本就需要手动注入配置文件解析Bean
Spring Boot 默认不支持@PropertySource读取yaml 文件,需要自定义PropertySourceFactory进行解析。
创建YamlPropertiesSourceFactory类用来解析Yaml格式的文件。
import org.springframework.boot.env.YamlPropertySourceLoader; import org.springframework.core.env.PropertySource; import org.springframework.core.io.support.EncodedResource; import org.springframework.core.io.support.PropertySourceFactory; import java.io.IOException; import java.util.List; import java.util.Optional; public class YamlPropertiesSourceFactory implements PropertySourceFactory { @Override public PropertySource<?> createPropertySource(String name, EncodedResource resource) throws IOException { String resourceName = Optional.ofNullable(name).orElse(resource.getResource().getFilename()); List<PropertySource<?>> yamlSources = new YamlPropertySourceLoader().load(resourceName, resource.getResource()); return yamlSources.get(0); } }
The above is the detailed content of How to specify Yaml configuration file for SpringBoot parsing. For more information, please follow other related articles on the PHP Chinese website!