如何将json字符串编组到bson文档以写入MongoDB? [英] How to marshal json string to bson document for writing to MongoDB?

问题描述

我正在寻找的内容等同于

What I am looking is equivalent of Document.parse()

在golang中，这允许我直接从json创建bson吗?我不想创建用于编组的中间Go结构

in golang, that allows me create bson from json directly? I do not want to create intermediate Go structs for marshaling

推荐答案

gopkg.in/mgo.v2/bson 软件包具有一个名为 UnmarshalJSON 的函数你想要什么.

The gopkg.in/mgo.v2/bson package has a function called UnmarshalJSON which does exactly what you want.

data参数应将JSON字符串保存为[]byte值.

The data parameter should hold you JSON string as []byte value.

 func UnmarshalJSON(data []byte, value interface{}) error

UnmarshalJSON解组一个可能包含BSON扩展JSON规范中定义的非标准语法的JSON值.

UnmarshalJSON unmarshals a JSON value that may hold non-standard syntax as defined in BSON's extended JSON specification.

示例:

var bdoc interface{}
err = bson.UnmarshalJSON([]byte(`{"id": 1,"name": "A green door","price": 12.50,"tags": ["home", "green"]}`),&bdoc)
if err != nil {
    panic(err)
}
err = c.Insert(&bdoc)

if err != nil {
    panic(err)
}

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