2.7.0版本getContextPath方法：
```
protected String getContextPath(URL url) {
        String contextPath = url.getPath();
        return contextPath.endsWith("/") ? contextPath.substring(0,contextPath.length()-1) : contextPath;
    }
```
无法将方法置入web容器中，退回2.6.5版本的方法：
```
protected String getContextPath(URL url) {
        int pos = url.getPath().lastIndexOf("/");
        return pos > 0 ? url.getPath().substring(0, pos) : "";
    }
```
使用正常，两个方法应该不等价的。
@Deprecated
    public List<ProviderConfig> getProviders() {
        return convertProtocolToProvider(protocols);
    }
    /**
     * @deprecated Replace to setProtocols()
     */
    @Deprecated
    public void setProviders(List<ProviderConfig> providers) {
        this.protocols = convertProviderToProtocol(providers);
    }
    @Parameter(excluded = true)
    public String getUniqueServiceName() {
        StringBuilder buf = new StringBuilder();
        if (group != null && group.length() > 0) {
            buf.append(group).append("/");
        }
        buf.append(StringUtils.isNotEmpty(path) ? path : interfaceName);
        if (version != null && version.length() > 0) {
            buf.append(":").append(version);
        }
        return buf.toString();
    }
    @Override
    @Parameter(excluded = true)
    public String getPrefix() {
        return Constants.DUBBO + ".service." + interfaceName;
    }
}