Spring MongoDB在保存后获取插入项目的ID [英] Spring mongodb get ID of inserted item after Save

问题描述

我正在使用Spring MongoDb.

I am working with Spring MongoDb.

我使用insert方法创建各种实体: http://docs.spring.io/spring-data/mongodb/docs/current/api/org/springframework/data/mongodb/core/MongoOperations.html#insert-java.lang.Object-

I create various entities using insert method: http://docs.spring.io/spring-data/mongodb/docs/current/api/org/springframework/data/mongodb/core/MongoOperations.html#insert-java.lang.Object-

但是，所有方法都返回void.我需要返回插入文档的ObjectId.

However, all methods return void. I need to return the ObjectId of the inserted document.

获得它的最好方法是什么?

What is the best way to get it?

推荐答案

这很有趣，我想分享一下.我只是在上面的BatScream评论的帮助下找到了解决方案:

This is pretty interesting and thought I would share. I just figured out the solution for this with the help of BatScream comment above:

您将创建一个对象并将其插入到MongoDB中:

You would create an object and insert it into your MongoDB:

    Animal animal = new Animal();
    animal.setName(name);
    animal.setCat(cat);

    mongoTemplate.insert(animal);

您的动物类如下所示，其中包含所有字段的吸气剂和设置:

Your animal class looks like this with getters and settings for all fields:

public class Animal {

    @Id
    @JsonProperty
    private String id;
    @JsonProperty
    private String name;
    @JsonProperty
    private String cat;

    public String getId() {
        return id;
    }
}

在mongoTemplate.insert(animal);下完成插入后，您实际上可以调用方法animal.getId()，它将返回创建的ObjectId.

AFTER you have done the insert under mongoTemplate.insert(animal);, you can actually call the method animal.getId() and it will return back the ObjectId that was created.

这篇关于Spring MongoDB在保存后获取插入项目的ID的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！