                                 <div class="node nodeshellcss" data-type="shell">SHELL</div>
                                            <div class="node nodegroupcss" data-type="group">任务组</div>
                                            <div class="node nodejdbccss" data-type="jdbc">JDBC</div>
                                            <div class="node nodehdfscss" data-type="hdfs">HDFS</div>
                                            <div class="node nodehttpcss" data-type="http">HTTP</div>
   