SpringBoot read configuration file

Updated to 19 days ago

Plan 1:

Using PropertiesLoaderUtils

import ;
 import ;
 import ;
 import ;

 public static Properties readPropertiesFile(String fileName) {
     try {
         Resource resource = new ClassPathResource(fileName);
         Properties props = (resource);
         return props;
     } catch (Exception e) {
         ("Read configuration file:" + fileName + "Exception, read failed");
         ();
     }
     return null;
 }

Properties properties = readPropertiesFile("");
((""));

Plan 2:

Using Environment

import ;

@Autowired
private Environment environment;

((""));

Plan 3:

Use @Value

import ;

@Value("${}")
private String rabbitmqHost;

(rabbitmqHost);

Plan 4:

Using @ConfigurationProperties

Attribute Class

import ;
import ;
import ;

@Getter
@Setter
@ConfigurationProperties(prefix = "")
public class TestProperties {
    private String host;
    private String port;
    private String username;
    private String password;
}

import ;
import ;

@EnableConfigurationProperties()
@SpringBootConfiguration
public class TestConfiguration {
}

Use configuration classes

@Autowired
private TestProperties testProperties;

(());

static static method read configuration

@Component
 public class UserUtil {
     // Use @Value annotation to read the configuration
     @Value("${}")
     private String name;

     // Set static member variables to receive the value injected by @Value
     private static String userName;

     // Use @PostConstruct annotation for static variable assignment
     @PostConstruct
     public void getUserName() {
         userName = ;
     }

     // Test whether the static variable is assigned to the test method
     public static String test() {
         return userName;
     }
 }

Call example:

String name = ();

Using the @Component property annotation indicates that it needs to be loaded when the startup class Application is started.