java 在 spring boot 中通过动态键读取属性
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Read properties by dynamic keys in spring boot
提问by rishi
I wanted to know if there is any way in Spring Boot to read property values from properties file by using Dynamic Keys. I know properties can be put in application.propertiesand can be read using @Value("propertyKey")But my keys are going to be dynamic.
我想知道 Spring Boot 中是否有任何方法可以使用Dynamic Keys从属性文件中读取属性值。我知道可以放入属性application.properties并可以使用读取@Value("propertyKey")但我的密钥将是动态的。
I know about @PropertySourceto read property values and I can construct my keys dynamically. So is there any way that is provided by Spring Boot?
我知道@PropertySource要读取属性值，并且可以动态构造我的键。那么有没有Spring Boot提供的方法呢？
回答by freakman
you can use:
您可以使用：
@Autowired
private Environment env;
and then load property from code:
然后从代码加载属性：
env.getProperty("your.property")
回答by Neeraj Gahlawat
Register a Properties File via Java Annotations.
@Configuration @PropertySource("classpath:test.properties") public class PropertiesJavaConfig {
}
Dynamically select the right file at runtime.
@PropertySource({ "classpath:persistence-${envTarget:DB}.properties" })
通过 Java 注释注册属性文件。
@Configuration @PropertySource("classpath:test.properties") 公共类 PropertiesJavaConfig {
}
在运行时动态选择正确的文件。
@PropertySource({ "classpath:persistence-${envTarget:DB}.properties" })
