如何将2个Java String数组的键和值转换为json对象

I have 2 arrays with Strings.

我有2个带字符串的数组。

String [] keys = {"key1", "key2",....}
String [] values = {"value1", "value2",....}

Their size is not known, but they have the same size.

它们的大小尚不清楚,但它们的大小相同。

I want to generate a Json object out of them, such that:

我想从中生成一个Json对象,这样:

{
"key1":"value1",
"key2":"value2",
...
}

What will be a good practice for that?

对此有什么好的做法?

3 个解决方案

#1

You can iterate over the arrays, taking each key, value pair, and add them to a JSON object.

您可以迭代数组,获取每个键,值对,并将它们添加到JSON对象。

gson:

JsonObject jsonObject = new JsonObject();

for (int i = 0; i < keys.length; i ++) {
    jsonObject.addProperty(keys[i], values[i]);
}

Jackson:

ObjectNode jsonObject = JsonNodeFactory.instance.objectNode();

for (int i = 0; i < keys.length; i ++) {
    jsonObject.put(keys[i], values[i]);
}

#2

As an options you can create a Map and just serialize it using ObjectMapper from Jackson library :

作为选项,您可以创建一个Map,并使用Jackson库中的ObjectMapper对其进行序列化:

Map<String, String> map = new HashMap<>();
for (int i = 0; i < keys.length; ++i) {
    map.put(keys[i], values[i]);
}
ObjectMapper mapper = new ObjectMapper();
return mapper.writeValueAsString(map);

#3

I would say put them into a Map, then convert into JSON using something like Gson.

我会说把它们放到Map中,然后使用像Gson这样的东西转换成JSON。

public static void main(String[] args) {
    String[] keys = {"key1", "key2"};
    String[] values = {"value1", "value2"};

    Map<String, String> map = new HashMap<>();

    for (int i = 0; i < keys.length; i++) {
        map.put(keys[i], values[i]);
    }

    Gson gson = new GsonBuilder().setPrettyPrinting().create();
    System.out.println(gson.toJson(map));

}

#1