How to read Azure app config values from Java SpringBoot app

I have a Springboot app that is trying to connect and read values from an app config resource.

Some keys in the Azure app config (which I am unable to change) are in this format

`

/application/config.datasource.jdbc-url

/application/config.datasource.password

/application/config.datasource.username`

I have a config Java class with prefix ("config"), but I don't know what member variables I should have in order to access "datasource.jdbc-url", "datasource.password" etc.

If the app config was just /application/config.username

then I could just use the below in my Java class

String username;

but for some of the configs that include multiple dots and some dashes (which Java identifiers can't have), how can I read the values?

Thank you!

You have two options depending on what you are looking for. You can either use @Value("config.datasource.jdbc-url") or you can use nested properties.

public  class  Datasource {

  private String username;
        
  private String password;
        
  private String jdbcurl;

  ...
}

@ConfigurationProperties(prefix = "config")
class MyProperties {

  private Datasource datasource = new Datasource();

  ...

}

</details>



# 答案2
**得分**: 0

您的用例类似于此示例[azure-spring-cloud-starter-appconfiguration-config-sample][1]，请尝试定义[properties class][2]以绑定Azure App Configuration中的配置项。

[1]: https://github.com/Azure-Samples/azure-spring-boot-samples/tree/main/appconfiguration/azure-spring-cloud-starter-appconfiguration-config/azure-spring-cloud-starter-appconfiguration-config-sample
[2]: https://github.com/Azure-Samples/azure-spring-boot-samples/blob/4ba43ef615e295c01fba0359402c696e7f412049/appconfiguration/azure-spring-cloud-starter-appconfiguration-config/azure-spring-cloud-starter-appconfiguration-config-sample/src/main/java/example/MessageProperties.java#L13

<details>
<summary>英文:</summary>

Your use case is similar to this sample [azure-spring-cloud-starter-appconfiguration-config-sample][1], please try to define the [properties class][2] to bind the configurations in Azure App Configuration.


  [1]: https://github.com/Azure-Samples/azure-spring-boot-samples/tree/main/appconfiguration/azure-spring-cloud-starter-appconfiguration-config/azure-spring-cloud-starter-appconfiguration-config-sample
  [2]: https://github.com/Azure-Samples/azure-spring-boot-samples/blob/4ba43ef615e295c01fba0359402c696e7f412049/appconfiguration/azure-spring-cloud-starter-appconfiguration-config/azure-spring-cloud-starter-appconfiguration-config-sample/src/main/java/example/MessageProperties.java#L13

</details>



# 答案3
**得分**: 0

在 `Azure portal` > `App configuration` > `Configuration explorer` 中，我已经为 Username、Password 和 Jdbc url 创建了键和值。

这是我的 UserProperties 类，

```java
@ConfigurationProperties(prefix = "config.datasource")
public class UserProperties {

    private String username;
    private String password;
    private String jdbcurl;

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getJdbcurl() {
        return jdbcurl;
    }

    public void setJdbcurl(String jdbcurl) {
        this.jdbcurl = jdbcurl;
    }
}

这是我创建的 UserController 类，

public class UserController {

    private final UserProperties properties;

    public UserController(UserProperties properties) {
        this.properties = properties;
    }

    @GetMapping("/Anu")
    public String getUsername() {
        return "username: " + properties.getUsername();
    }

    @GetMapping("/vyshu")
    public String getPassword() {
        return "password: " + properties.getPassword();
    }

    @GetMapping("/priya")
    public String getJdbcurl() {
        return "jdbcurl: " + properties.getJdbcurl();
    }
}

这是我的代码的引导部分，你应该将你的连接字符串添加在 {} 中，

spring.cloud.azure.appconfiguration.stores[0].connection-string= ${APP_CONFIGURATION_CONNECTION_STRING}

这是我的 Username 的输出，

这是我的 Password 的输出，

这是我的 jdbcurl 的输出，

 @ConfigurationProperties(prefix = "config.datasource")
public  class  UserProperties {
private String username;
private String password;
private String jdbcurl;
public String getUsername() {
return  username;
}
public  void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return  password;
}
public  void setPassword(String password) {
this.password = password;
}
public String getJdbcurl() {
return  jdbcurl;
}
public  void setJdbcurl(String jdbcurl) {
this.jdbcurl = jdbcurl;
}
}

     public  class UserController {
private  final UserProperties properties;
public  UserController(UserProperties properties) {
this.properties = properties;
}
@GetMapping("/Anu")
public String getUsername() {
return  "username: " + properties.getUsername();
}
@GetMapping("/vyshu")
public String getPassword() {
return  "password: " + properties.getPassword();
}
@GetMapping("/priya")
public String getJdbcurl() {
return  "jdbcurl: " + properties.getJdbcurl();
}
}