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弹簧5.0.5@值未解析为正确的类型

spring-properties spring-config spring-mvc spring

1

TheJeff · 技术社区 · 7 年前

我在spring 5中遇到了以下错误,并且阅读了所有关于这个问题的帖子,但都没有发现运气。我只是通过PropertiesConfig类重构了应用程序以使用@配置,而不是appliationContext。属性占位符定义的xml

Unsatisfied dependency expressed through field 'secureExpirationHours'; nested 
exception is org.springframework.beans.TypeMismatchException: Failed to convert 
value of type 'java.lang.String' to required type 'int'; nested exception is 
java.lang.NumberFormatException: For input string: "${asset.href.expiration.hours.secure}

参考var:

public class TestRepository {
    @Value("${asset.href.expiration.hours.secure}")
    private int secureExpirationHours;
}

混合配置:

@Configuration
@ComponentScan
@Import({PropertiesConfig.class})
@ImportResource({
    "classpath:META-INF/spring/applicationContext-assets.xml",
    "classpath:META-INF/spring/applicationContext-mongo.xml",
    "classpath:META-INF/spring/applicationContext-security.xml",
    "classpath:META-INF/spring/applicationContext.xml"})
public class CoreConfig {
}

属性配置。类别:

@Configuration
public class PropertiesConfig {

    public static PropertySourcesPlaceholderConfigurer commonEnvConfig;

    @Bean(name="commonConfig")
    public static PropertiesFactoryBean commonConfig() {
        PropertiesFactoryBean commonConfig = new PropertiesFactoryBean();
        commonConfig.setLocation(new ClassPathResource("META-INF/spring/config.properties"));
        return commonConfig;
    }

    @Bean(name="envProperties")
    public static YamlPropertiesFactoryBean yamlProperties() {
          YamlPropertiesFactoryBean yaml = new YamlPropertiesFactoryBean();
          yaml.setResources(new ClassPathResource("application-dev.yaml"));
          return yaml;
    }

    @Bean(name="commonConfigPropertyPlaceholder")
    public static PropertySourcesPlaceholderConfigurer commonConfigPropertyPlaceholder() throws IOException {
        if (commonEnvConfig == null) {
            commonEnvConfig = new PropertySourcesPlaceholderConfigurer();
        }

        PropertiesFactoryBean commonConfig = PropertiesConfig.commonConfig();
        try {
            commonEnvConfig.setProperties(commonConfig.getObject());
        } catch (IOException e) {
            e.printStackTrace();
            throw e;
        }

        YamlPropertiesFactoryBean yaml = PropertiesConfig.yamlProperties();
        commonEnvConfig.setProperties(yaml.getObject());
        commonEnvConfig.setIgnoreUnresolvablePlaceholders(true);

        return commonEnvConfig;
    }
}

请并感谢您的帮助!

1 回复 | 直到 7 年前

1

0

TheJeff 7 年前

解决了问题-有两个。

首先,你必须打电话。AfterPropertieSet();在PropertiesFactoryBean上,否则。getObject()返回null。

@Bean(name="commonConfig")
public static PropertiesFactoryBean commonConfig() throws IOException {
    PropertiesFactoryBean commonConfig = new PropertiesFactoryBean();
    commonConfig.setLocation(new ClassPathResource("META-INF/spring/config.properties"));
    try {
        commonConfig.afterPropertiesSet();
    }
    catch (IOException e) {
        e.printStackTrace();
        throw e;
    }
    return commonConfig;
}

其次,必须使用以下两个属性调用PropertySourcesPlaceholderConfigurer上的“setPropertiesArray()”:

    PropertySourcesPlaceholderConfigurer commonEnvConfig = new PropertySourcesPlaceholderConfigurer();
    commonEnvConfig.setPropertiesArray(commonConfig().getObject(), yamlProperties().getObject());