- [x] I have searched the [issues](https://github.com/apache/incubator-dubbo/issues) of this repository and believe that this is not a duplicate.
- [x] I have checked the [FAQ](https://github.com/apache/incubator-dubbo/blob/master/FAQ.md) of this repository and believe that this is not a duplicate.

### Environment

* Dubbo version: 2.7.0
* Operating System version: mac
* Java version: 1.8

### Steps to reproduce this issue

1. Start dubbo provider in 2.7.0 SpringBoot Annotation mode
```
@SpringBootApplication
@DubboComponentScan
public class SpringBootProvider {
  public static void main(String[] args) {
    new EmbeddedZooKeeper(2181, false).start();
    SpringApplication.run(SpringBootProvider.class);
  }
}
```

2. set parameters as 2.5.10 for the ServiceBean.
```
@Service(parameters = {"key","value"})
public class DemoServiceImpl implements DemoService {

}
```
3. run SpringBootProvider to start the service

Pls. provide [GitHub address] to reproduce this issue.

### Expected Result

The service has been started and register to zookeeper.

### Actual Result

It throws exception as below, service cannot be started up.

```
Caused by: org.springframework.beans.ConversionNotSupportedException: Failed to convert property value of type 'java.lang.String[]' to required type 'java.util.Map' for property 'parameters'; nested exception is java.lang.IllegalStateException: Cannot convert value of type 'java.lang.String[]' to required type 'java.util.Map' for property 'parameters': no matching editors or conversion strategy found
	at org.springframework.beans.AbstractNestablePropertyAccessor.convertIfNecessary(AbstractNestablePropertyAccessor.java:591) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]
	at org.springframework.beans.AbstractNestablePropertyAccessor.convertForProperty(AbstractNestablePropertyAccessor.java:603) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]
	at org.springframework.beans.BeanWrapperImpl.convertForProperty(BeanWrapperImpl.java:216) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.convertForProperty(AbstractAutowireCapableBeanFactory.java:1532) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1491) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1231) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:551) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]
	... 15 more
Caused by: java.lang.IllegalStateException: Cannot convert value of type 'java.lang.String[]' to required type 'java.util.Map' for property 'parameters': no matching editors or conversion strategy found
	at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:306) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]
	at org.springframework.beans.AbstractNestablePropertyAccessor.convertIfNecessary(AbstractNestablePropertyAccessor.java:576) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]
	at org.springframework.beans.AbstractNestablePropertyAccessor.convertForProperty(AbstractNestablePropertyAccessor.java:603) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]
	at org.springframework.beans.BeanWrapperImpl.convertForProperty(BeanWrapperImpl.java:216) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.convertForProperty(AbstractAutowireCapableBeanFactory.java:1532) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1491) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1231) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:551) ~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]
	... 15 more
```

With my investigation, ConstructorArgValue discard in ServiceAnnotationBeanPostProcessor, which caused the issue. 
```
private AbstractBeanDefinition buildServiceBeanDefinition(Service service, Class<?> interfaceClass,
                                                              String annotatedServiceBeanName) {

        BeanDefinitionBuilder builder = rootBeanDefinition(ServiceBean.class)
                .addConstructorArgValue(service)
                // References "ref" property to annotated-@Service Bean
                .addPropertyReference("ref", annotatedServiceBeanName)
                .addPropertyValue("interface", interfaceClass.getName());
}
```
if (interfaceClass == null) {
            
            
            Class<?>[] allInterfaces = ClassUtils.getAllInterfacesForClass(annotatedServiceBeanClass);
            if (allInterfaces.length > 0) {
                interfaceClass = allInterfaces[0];
            }
        }
        Assert.notNull(interfaceClass,
                "@Service interfaceClass() or interfaceName() or interface class must be present!");
        Assert.isTrue(interfaceClass.isInterface(),
                "The type that was annotated @Service is not an interface!");
        return interfaceClass;
    }
    private Class<?> resolveClass(BeanDefinitionHolder beanDefinitionHolder) {
        BeanDefinition beanDefinition = beanDefinitionHolder.getBeanDefinition();
        return resolveClass(beanDefinition);
    }
    private Class<?> resolveClass(BeanDefinition beanDefinition) {
        String beanClassName = beanDefinition.getBeanClassName();
        return resolveClassName(beanClassName, classLoader);
    }
    private Set<String> resolvePackagesToScan(Set<String> packagesToScan) {
        Set<String> resolvedPackagesToScan = new LinkedHashSet<String>(packagesToScan.size());
        for (String packageToScan : packagesToScan) {
            if (StringUtils.hasText(packageToScan)) {
                String resolvedPackageToScan = environment.resolvePlaceholders(packageToScan.trim());
                resolvedPackagesToScan.add(resolvedPackageToScan);
            }
        }