我想访问应用程序中提供的值。属性,例如:
logging.level.org.springframework.web: DEBUG
logging.level.org.hibernate: ERROR
logging.file=${HOME}/application.log
userBucket.path=${HOME}/bucket
我想访问userBucket。在Spring Boot应用程序的主程序中的路径。
我想访问应用程序中提供的值。属性,例如:
logging.level.org.springframework.web: DEBUG
logging.level.org.hibernate: ERROR
logging.file=${HOME}/application.log
userBucket.path=${HOME}/bucket
我想访问userBucket。在Spring Boot应用程序的主程序中的路径。
当前回答
您可以使用@Value注释并访问spring bean中的属性
@Value("${userBucket.path}")
private String userBucketPath;
其他回答
另一种在配置中找到键/值的方法。
...
import org.springframework.core.env.ConfigurableEnvironment;
...
@SpringBootApplication
public class MyApplication {
@Autowired
private ConfigurableEnvironment myEnv;
...
@EventListener(ApplicationReadyEvent.class)
public void doSomethingAfterStartup()
throws Exception {
LOG.info("myEnv (userBucket.path): " + myEnv.getProperty("userBucket.path"));
}
}
@ value (" $ {userBucket.path} ") private String userBucketPath;
@ConfigurationProperties可以用来将值从.properties(.yml也支持)映射到POJO。
考虑下面的示例文件。
. properties
cust.data.employee.name=Sachin
cust.data.employee.dept=Cricket
Employee.java
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;
@ConfigurationProperties(prefix = "cust.data.employee")
@Configuration("employeeProperties")
public class Employee {
private String name;
private String dept;
//Getters and Setters go here
}
现在可以通过如下方式自动装配employeeProperties来访问属性值。
@Autowired
private Employee employeeProperties;
public void method() {
String employeeName = employeeProperties.getName();
String employeeDept = employeeProperties.getDept();
}
另一种方法是将org.springframework.core. environment注入到bean中。
@Autowired
private Environment env;
....
public void method() {
.....
String path = env.getProperty("userBucket.path");
.....
}
应用程序。Yml或application.properties
config.value1: 10
config.value2: 20
config.str: This is a simle str
MyConfig类
@Configuration
@ConfigurationProperties(prefix = "config")
public class MyConfig {
int value1;
int value2;
String str;
public int getValue1() {
return value1;
}
// Add the rest of getters here...
// Values are already mapped in this class. You can access them via getters.
}
任何想要访问配置值的类
@Import(MyConfig.class)
class MyClass {
private MyConfig myConfig;
@Autowired
public MyClass(MyConfig myConfig) {
this.myConfig = myConfig;
System.out.println( myConfig.getValue1() );
}
}