java mongodb怎么对内嵌文档进行增删查改
例如:{ "_id" : ObjectId("5a371f2bd9da1d0594e23070"), "add" : "10233", "model" : "btm-120", "test" : { "test1" : { "a" : "20", "b" : "16", "pass" : "0", "time" : "2017-11-20" }, "test2" : { "a" : "18", "b" : "17", "pass" : "0", "time" : "2017-11-22" }, "test3" : { "a" : "14", "b" : "17", "pass" : "1", "time" : "2017-11-23" } }}我想新加一条test4或者将a改成xyz,应该怎么用java写 |
免责声明:本内容仅代表回答会员见解不代表天盟观点,请谨慎对待。
版权声明:作者保留权利,不代表天盟立场。
|
|
|
|