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

### Environment

* Dubbo version: 2.7.5
* Zookeeper version: 3.4.14
* Operating System version: macos
* Java version: 1.8

### Steps to reproduce this issue

1. 按官方文档搭建provider，两种方式：annotation/xml
2. 分别配置

```xml
    <dubbo:metadata-report address="zookeeper://127.0.0.1:2181"/>
```

```java
        @Bean
        public MetadataReportConfig metadataReportConfig() {
            MetadataReportConfig metadataReportConfig = new MetadataReportConfig();
            metadataReportConfig.setAddress("zookeeper://127.0.0.1:2181");
            return metadataReportConfig;
        }
```

3. 应用正常启动
4. Consumer端正常调用
4. 观察Zookeeper节点数据，元数据节点/dubbo/metadata 未创建

### Expected Result
元数据正常上报

### Actual Result

元数据节点在Zookeeper上未创建，元数据未上报

> 将dubbo版本号更改为2.7.4.1、2.7.3，代码或配置未改动，元数据正常上报

if (argument.getType() != null && argument.getType().length() > 0) {
                            Method[] methods = interfaceClass.getMethods();
                            
                            if (methods.length > 0) {
                                for (int i = 0; i < methods.length; i++) {
                                    String methodName = methods[i].getName();
                                    
                                    if (methodName.equals(method.getName())) {
                                        Class<?>[] argtypes = methods[i].getParameterTypes();
                                        
                                        if (argument.getIndex() != -1) {
                                            if (argtypes[argument.getIndex()].getName().equals(argument.getType())) {
                                                AbstractConfig.appendParameters(map, argument, method.getName() + "." + argument.getIndex());
                                            } else {
                                                throw new IllegalArgumentException("Argument config error : the index attribute and type attribute not match :index :" + argument.getIndex() + ", type:" + argument.getType());
                                            }
                                        } else {
                                            
                                            for (int j = 0; j < argtypes.length; j++) {
                                                Class<?> argclazz = argtypes[j];
                                                if (argclazz.getName().equals(argument.getType())) {
                                                    AbstractConfig.appendParameters(map, argument, method.getName() + "." + j);
                                                    if (argument.getIndex() != -1 && argument.getIndex() != j) {
                                                        throw new IllegalArgumentException("Argument config error : the index attribute and type attribute not match :index :" + argument.getIndex() + ", type:" + argument.getType());
                                                    }
                                                }
                                            }
                                        }
                                    }
                                }