grep过滤特殊字符

grep -a "businessID": 3" kafka.log|grep "componentID": 18"

--需求：过滤下述log中的红色字符串
............. null, "group2": null, "group3": null, "group4": null, "group5": null, "flag": null, "businessID": 1, "componentID": 4, "extendID": null}