lower version, for example 2.6.8
```properties
dubbo.provider.version=1.0
```

2.7.6 failed to recognize the provider url with 'default.version=1.0' key,  it only takes 'version.1.0' into consideration.

}
    public String getMethodParameter(String method, String key) {
        Map<String, String> keyMap = methodParameters.get(method);
        String value = null;
        if (keyMap != null) {
            value = keyMap.get(key);
        }
        if (StringUtils.isEmpty(value)) {
            value = parameters.get(key);
        }
        return value;
    }
    public String getMethodParameter(String method, String key, String defaultValue) {
        String value = getMethodParameter(method, key);
        return StringUtils.isEmpty(value) ? defaultValue : value;
    }
    public double getMethodParameter(String method, String key, double defaultValue) {
        Number n = getCachedNumber(method, key);
        if (n != null) {
            return n.doubleValue();
        }
        String value = getMethodParameter(method, key);
        if (StringUtils.isEmpty(value)) {
            return defaultValue;
        }
        double d = Double.parseDouble(value);
        updateCachedNumber(method, key, d);
        return d;
    }
    public float getMethodParameter(String method, String key, float defaultValue) {