ThreadPoolExhaustedListener 在最新版本中未发现用户配置的入口，这个功能的设计初衷我理解，是发生线程池耗尽通知给应用，目前没看到应用如何添加监听的地方。
public void setHost(String host) {
        this.host = host;
    }
    @Parameter(excluded = true)
    public Integer getPort() {
        return port;
    }
    public final void setPort(Integer port) {
        this.port = port;
    }
    @Deprecated
    @Parameter(excluded = true, attribute = false)
    public String getPath() {
        return getContextpath();
    }
    @Deprecated
    public void setPath(String path) {
        setContextpath(path);
    }
    @Parameter(excluded = true)
    public String getContextpath() {
        return contextpath;
    }
    public void setContextpath(String contextpath) {
        this.contextpath = contextpath;
    }
    public String getThreadpool() {
        return threadpool;
    }
    public void setThreadpool(String threadpool) {