Question

我的Spring Boot应用程序中具有与应用程序相关的属性。奇怪的问题是，有时加载属性时没有任何问题，但大多数情况下它们会引发异常。

这是我的春季靴子类，上面带有@Configuration注释。尝试调试该问题，但找不到这种奇怪行为的任何原因。

@Configuration
public class RedisConfig {
    private static final Logger logger = LoggerFactory.getLogger(RedisConfig.class);

    @Value("${redisurl}")
    private String redisURL;

    @Value("${redisport}")
    private String redisPort;

    @Bean    
    public JedisConnectionFactory redisConnectionFactory() {

        logger.info("--redisURL-" + redisURL);
        logger.info("--redisPort-" + redisPort);

        JedisConnectionFactory redisConnectionFactory = new JedisConnectionFactory();
        redisConnectionFactory.setHostName(redisURL);
        redisConnectionFactory.setPort(Integer.parseInt(redisPort));
        logger.info("--connected to redis--");
        return redisConnectionFactory;
    }


redisurl=cst-prd-007
redisport=6379
redispassword=

感谢您的帮助。

Stacktrace：

Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.boot.actuate.autoconfigure.redis.RedisHealthIndicatorConfiguration': Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'redisConfig': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'redisurl' in value "${redisurl}"
        at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:729)
        at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:192)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1270)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1127)

Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'redisurl' in value "${redisurl}"
        at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:172)
        at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:124)
        at org.springframework.core.env.AbstractPropertyResolver.doResolvePlaceholders(AbstractPropertyResolver.java:237)
        at org.springframework.core.env.AbstractPropertyResolver.resolveRequiredPlaceholders(AbstractPropertyResolver.java:211)
        at org.springframework.context.support.PropertySourcesPlaceholderConfigurer.lambda$processProperties$0(PropertySourcesPlaceholderConfigurer.java:175)
        at org.springframework.beans.factory.support.AbstractBeanFactory.resolveEmbeddedValue(AbstractBeanFactory.java:834)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1086)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1065)
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:584)
        at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:91)
        at org.springframework.beans.factory.annotation.AutowiredAnnotationB

编辑：

我也尝试这样做。没用

 @Autowired
    Environment env;

    @Bean
    public JedisConnectionFactory redisConnectionFactory() {

        logger.info("--redisURL-" + redisURL);
        logger.info("--redisPort-" + redisPort);

        redisURL = env.getRequiredProperty("redis.url");
        redisPort = env.getRequiredProperty("redis.port");

        JedisConnectionFactory redisConnectionFactory = new JedisConnectionFactory();
        redisConnectionFactory.setHostName(redisURL);
        redisConnectionFactory.setPort(Integer.parseInt(redisPort));
        logger.info("--connected to redis--");
        return redisConnectionFactory;
    }

使用以下方法后问题已解决

@Component
public class RedisConf {

    @Value("${redis.url}")
    String url;

    @Value("${redis.port}")
    int port;

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url;
    }

    public int getPort() {
        return port;
    }

    public void setPort(int port) {
        this.port = port;
    }


}

Answer 1

您可以尝试使用Spring Framework API中的@Value而不是使用Environment注释。

喜欢这个

@Configuration
public class RedisConfig {
private static final Logger logger = LoggerFactory.getLogger(RedisConfig.class);

private String redisURL, redisPort;

@Autowired
private Environment env;

@Bean    
public JedisConnectionFactory redisConnectionFactory() {

    redisURL = env.getRequiredProperty("redisurl");
    redisPort = env.getRequiredProperty("redisport");

    JedisConnectionFactory redisConnectionFactory = new JedisConnectionFactory();
    redisConnectionFactory.setHostName(redisURL);
    redisConnectionFactory.setPort(Integer.parseInt(redisPort));
    logger.info("--connected to redis--");
    return redisConnectionFactory;
}

Answer 2

使用以下方法即可解决问题

@Component
public class RedisConf {

    @Value("${redis.url}")
    String url;

    @Value("${redis.port}")
    int port;

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url;
    }

    public int getPort() {
        return port;
    }

    public void setPort(int port) {
        this.port = port;
    }


}

无法在SpringBoot中加载应用程序属性

2 个答案: