springboot basis - Profiles

 

Configuration file attributes, and how to map entity class

- Use spring-boot-configuration-processor reads the configuration file more gracefully

Simple configuration file read

 @Value("${author.name}")
private String authorName；　

使用spring-boot-configuration-processor

The first step: the introduction of pom file

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-configuration-processor</artifactId>
    <optional>true</optional>
</dependency>

Step two: Defining the configuration file, the file directory on the resources, the file format: .properties file name (eg: author.properties), file contents as follows:

author.name = your name 
author.email = your email address

The third step: class definition configuration, add annotations

@Configuration
@ConfigurationProperties(prefix = "author")
@PropertySource(value = "classpath:author.properties")
public class AuthorConfig {
    private String name;
    private String email;

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

Step Four: Use

@RestController
public class HelloController {
    @Autowired
    private AuthorConfig authorConfig;

    @Value("${author.name}")
    private String AuthorName;

    @GetMapping("/hello")
    public void Hello(){
        System.out.println(AuthorName);
        System.out.println(authorConfig.getName());
        System.out.println(authorConfig.getEmail());
    }
}