我的数据库采用以下形式
{
"_id" : ObjectId("56fc92adcf908c9f296e5885"),
"_class" : "com.abc.ppm.dto.AccessAttemptDTO",
"url" : "/myProject/edit",
"ipAddress" : "127.0.0.1",
"param" : {
"iecode" : [
"P1234"
],
"id" : [
"5696578c6d34f835dc632fdd "
]
},
"accessTime" : "30-3-2016 10:59:57",
"email" : "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="25444746654248444c490b464a48" rel="noreferrer noopener nofollow">[email protected]</a>",
"entity" : "admin",
"entityCode" : ""
},
{
"_id" : ObjectId("56fc92adcf908c9f296e5887"),
"_class" : "com.abc.ppm.dto.AccessAttemptDTO",
"url" : "/myProject/edit",
"ipAddress" : "127.0.0.1",
"param" : {
"iecode" : [
"P1122"
],
"id" : [
"5696578c6d34f835dc632fdd "
]
},
"accessTime" : "30-3-2016 10:59:57",
"email" : "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="dabbb8b99abdb7bbb3b6f4b9b5b7" rel="noreferrer noopener nofollow">[email protected]</a>",
"entity" : "admin",
"entityCode" : ""
}
现在我想找到所有 iecode 为“P1234”的条目。我怎么做？ (注:iecodes值以字符串数组格式存储。)
最佳答案
您可以编写如下查询:
db.collectionName.find({"param.iecode": "P1234"})
关于MongoDB - 从对象内的数组中查找数据，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/37087048/