से गुण को पुन: प्राप्त नहीं मैं वसंत बूट 1.2.1 का उपयोग कर रहा है और इसलिए की तरह मान्यता के साथ एक @ConfigurationProperties
सेम बनाने का प्रयास कर:स्प्रिंग बूट @ConfigurationProperties पर्यावरण
package com.sampleapp;
import java.net.URL;
import javax.validation.constraints.NotNull;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;
@Component
@ConfigurationProperties
public class SampleAppProperties {
@NotNull
private URL url;
public URL getUrl() {
return url;
}
}
वर्ग आवेदन bootstrap के लिए है:
package com.sampleapp;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.EnvironmentAware;
import org.springframework.core.env.Environment;
@SpringBootApplication
@EnableConfigurationProperties
public class SampleApplication implements EnvironmentAware {
private static Logger LOGGER = LoggerFactory.getLogger(SampleApplication.class);
public static void main(String[] args) {
SpringApplication.run(SampleApplication.class, args);
}
@Override
public void setEnvironment(Environment environment) {
LOGGER.info("URL = {}", environment.getRequiredProperty("url"));
}
}
मैं कोशिश करते हैं और इस आवेदन मैं निम्न अपवाद ढेर प्राप्त शुरू करते हैं:
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sampleAppProperties': Could not bind properties to [unknown] (target=, ignoreInvalidFields=false, ignoreUnknownFields=true, ignoreNestedProperties=false); nested exception is org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 1 errors
Field error in object 'target' on field 'url': rejected value [null]; codes [NotNull.target.url,NotNull.url,NotNull.java.net.URL,NotNull]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [target.url,url]; arguments []; default message [url]]; default message [may not be null]
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.postProcessBeforeInitialization(ConfigurationPropertiesBindingPostProcessor.java:303)
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.postProcessBeforeInitialization(ConfigurationPropertiesBindingPostProcessor.java:250)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:408)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1558)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:762)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:691)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:321)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:961)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:950)
at com.sampleapp.SampleApplication.main(SampleApplication.java:17)
Caused by: org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 1 errors
Field error in object 'target' on field 'url': rejected value [null]; codes [NotNull.target.url,NotNull.url,NotNull.java.net.URL,NotNull]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [target.url,url]; arguments []; default message [url]]; default message [may not be null]
at org.springframework.boot.bind.PropertiesConfigurationFactory.validate(PropertiesConfigurationFactory.java:294)
at org.springframework.boot.bind.PropertiesConfigurationFactory.doBindPropertiesToTarget(PropertiesConfigurationFactory.java:253)
at org.springframework.boot.bind.PropertiesConfigurationFactory.bindPropertiesToTarget(PropertiesConfigurationFactory.java:225)
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.postProcessBeforeInitialization(ConfigurationPropertiesBindingPostProcessor.java:296)
... 17 common frames omitted
आप setEnvironment
विधि में देख ऊपर मैं url
संपत्ति मान्य करने के लिए है कि यह Environment
का हिस्सा है और यह अपवाद से पहले प्रदर्शित किया जाता है लॉगिन कर रहा हूं सकते हैं:
. ____ _ __ _ _
/\\/___'_ __ _ _(_)_ __ __ _ \ \ \ \
(()\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ))))
' |____| .__|_| |_|_| |_\__, |////
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.2.1.RELEASE)
2015-02-12 12:32:01.384 INFO 5608 --- [ main] c.s.SampleApplication : Starting SampleApplication on VDDK03E-14FB6E5 with PID 5608 (D:\projects\onboarding-parser\target\classes started by .....
2015-02-12 12:32:01.509 INFO 5608 --- [ main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.spring[email protected]3252ac20: startup date [Thu Feb 12 12:32:01 EST 2015]; root of context hierarchy
2015-02-12 12:32:03.040 INFO 5608 --- [ main] c.s.SampleApplication : URL = http://www.joe.com
2015-02-12 12:32:03.378 ERROR 5608 --- [ main] o.s.b.b.PropertiesConfigurationFactory : Properties configuration failed validation
2015-02-12 12:32:03.378 ERROR 5608 --- [ main] o.s.b.b.PropertiesConfigurationFactory : Field error in object 'target' on field 'url': rejected value [null]; codes [NotNull.target.url,NotNull.url,NotNull.java.net.URL,NotNull]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [target.url,url]; arguments []; default message [url]]; default message [may not be null]
2015-02-12 12:32:03.394 WARN 5608 --- [ main] s.c.a.AnnotationConfigApplicationContext : Exception encountered during context initialization - cancelling refresh attempt
url
संपत्ति application.properties
फ़ाइल से खींचा जाता है src/main/resources
में। फ़ाइल की सामग्री हैं:
url=http://www.joe.com
क्या डेटाबेंडर 'लक्ष्य प्रकार के रूप में' URL' का समर्थन करता है? यदि आप फ़ील्ड प्रकार को 'स्ट्रिंग' में बदलते हैं तो क्या होता है? – chrylis