过滤掉所有的trace日志，3.4.1版本logback自带的过滤类--&gt;</span>
        <span class="hljs-tag">&lt;<span class="hljs-name">filter</span> <span class="hljs-attr">class</span>=<span class="hljs-string">"com.plumelog.logback.util.FilterSyncLogger"</span>&gt;</span>
            <span class="hljs-tag">&lt;<span class="hljs-name">level</span>&gt;</span>info<span class="hljs-tag">&lt;/<span class="hljs-name">level</span>&gt;</span>
            <span class="hljs-tag">&lt;<span class="hljs-name">fi