Question

这是来自https://docs.spring.io/spring-data/mongodb/docs/current/reference/html/#mongo-template.aggregation-update的简单示例：

Aggregation.newUpdate().set("average").toValue(ArithmeticOperators.valueOf("tests").avg());

当我运行它时，结果是：

Caused by: java.lang.UnsupportedOperationException: null
    at java.base/java.util.AbstractList.add(AbstractList.java:153) ~[na:na]
    at java.base/java.util.AbstractList.add(AbstractList.java:111) ~[na:na]
    at org.springframework.data.mongodb.core.aggregation.AggregationUpdate.set(AggregationUpdate.java:142) ~[spring-data-mongodb-3.0.0.RELEASE.jar:3.0.0.RELEASE]
    at org.springframework.data.mongodb.core.aggregation.AggregationUpdate$1.toValue(AggregationUpdate.java:207) ~[spring-data-mongodb-3.0.0.RELEASE.jar:3.0.0.RELEASE]

有人尝试过在Spring数据中使用聚合管道更新吗？

Answer 1

它看起来像是Spring文档中的错误-有效示例：https://docs.spring.io/spring-data/mongodb/docs/current/api/org/springframework/data/mongodb/core/aggregation/AggregationUpdate.html

春季数据-MongoDB：聚合管道更新不起作用

1 个答案: