试图在spring引导中将env变量读取到不在application.properties中的自定义属性文件中

Question

我正试图从custom.properties文件中的env变量中读取一些凭据，但它无法识别下面给出的属性文件的代码，但它的工作方式与我获取env变量的方式不同，如"${varName}"

org.apache.ws.security.crypto.provider=org.apache.wss4j.common.crypto.Merlin
# Type - Valid Keystore Type. Eg - pkcs12 , jks   
org.apache.ws.security.crypto.merlin.keystore.type=jks
# Keystore Password 
org.apache.ws.security.crypto.merlin.keystore.password=${keystorePassword}
# Keystore Private Password
org.apache.ws.security.crypto.merlin.keystore.private.password=${keystorePassword}
# Keystore Alias
org.apache.ws.security.crypto.merlin.keystore.alias=${keystoreAlias}
# Keystore File Name
org.apache.ws.security.crypto.merlin.keystore.file="something.jks"

有人能帮我如何将env变量添加到custom.properties文件和中吗

Answer 1

请尝试使用以下示例代码。

它从自定义属性文件中读取具有前缀值的属性。例如：下面的示例使用org.apache.ws.security.crypto.provider 的密钥从属性中读取值

@Configuration
@PropertySource(value = "classpath:<properytfilename>.properties")
@ConfigurationProperties(prefix = "org.apache.ws.security.crypto")
public class CustomProperties {
private String provider;
}

Answer 2

使用java.util.Properties

....
@Value("${what.ever.env}")
private String keystorePassword;
...
Properties properties = new Properties();
properties.setProperty("org.apache.ws.security.crypto.provider", "org.apache.wss4j.common.crypto.Merlin");
properties.setProperty("org.apache.ws.security.crypto.merlin.keystore.password", keystorePassword);

File file = new File("custom.properties");
FileOutputStream fileOut = new FileOutputStream(file);
properties.store(fileOut, "Comment here");
fileOut.close();
...