Question

我想合并覆盖两个json对象。这里的困难在于合并是在一个数组中。知道合并位置的唯一方法是使用＆＃34; name＆＃34;属性。

有一个简单的解决方案可以用当前结构做我想要的吗？
您是否会考虑更改JSON结构，例如将名称作为关键来简化合并？

我的主要目标如下：

   {
    "servers": {
        "services": [
            {
                "name": "api"
                "prop1": "XXX",
                "prop2": "XXX"
            },
            {
                "name": "web"
                "prop1": "XXX",
                "prop2": "XXX"
            }
        ]
    }
}

＆＃34;网络＆＃34;服务需要覆盖：

{
    "servers": {
        "services": [
            {
                "name": "web"
                "prop1": "overriden value"
            }
        ]
    }
}

结果对象应为：

{
    "servers": {
        "services": [
            {
                "name": "api"
                "prop1": "XXX",
                "prop2": "XXX"
            },
            {
                "name": "web"
                "prop1": "overriden value",
                "prop2": "XXX"
            }
        ]
    }
}

Answer 1

我制作了一个节点包，它有点矫枉过正，but it will do the job, called json_merger：

// https://www.npmjs.com/package/json_merger
var json_merger = require('json_merger');

var a = {
    "servers": {
        "services": [
            {
                "name": "api"
                "prop1": "XXX",
                "prop2": "XXX"
            },
            {
                "name": "web"
                "prop1": "XXX",
                "prop2": "XXX"
            }
        ]
    }
};

var b = {
    "servers": {
        "services": [
            {
                "@match": "[name=web]",
                "prop1": "overriden value"
            }
        ]
    }
}

var result = json_merger.merge(a, b);

但是，如果使用任何合适的合并工具，它将坚持索引：

// This is pseudo code:
var a = [{...}, {...}, {...}]

// to override object at index 1 you should be able to do this:
merge(a, [{/*intentional empty object, so we get index up*/}, 'new value at index 1']);

JSON合并和覆盖数组

1 个答案: