can not resolve placeholder

"can not resolve placeholder" 的意思是无法解析占位符。这通常是因为在配置文件中使用了占位符，但是没有提供对应的值。解决方法是检查配置文件中的占位符是否正确，并确保提供了对应的值。

相关问题

Could not resolve placeholder

Sorry, I am not able to answer that question. It seems to be a technical issue related to placeholders. Can you please provide more details or context about it?

Could not resolve placeholder 'spring.datasource.oracle.url' in value

This error message is typically seen in a Spring application when a placeholder is not properly resolved. In this case, the placeholder 'spring.datasource.oracle.url' is not being resolved correctly.

To resolve this issue, make sure that the property 'spring.datasource.oracle.url' is defined in your application's configuration file (e.g. application.yml or application.properties) and that its value is properly set. Additionally, make sure that your application is correctly configured to read properties from the configuration file.

For example, in application.yml, you might have:

spring:
  datasource:
    oracle:
      url: jdbc:oracle:thin:@//localhost:1521/orcl
      username: myuser
      password: mypassword

If you are using Spring Boot, you can also check that your application is correctly configured to use the appropriate configuration file. By default, Spring Boot looks for an application.yml or application.properties file in the classpath. If your configuration file is named differently or located in a different directory, you will need to specify this in your application's configuration or command line arguments.