删除不必要的JSON空格

const jsonString = '{"name": "John", "age": 30, "city": "New York"}';
const minifiedJson = JSON.stringify(JSON.parse(jsonString));
console.log(minifiedJson); // 输出: {"name":"John","age":30,"city":"New York"}

import json

json_string = '{"name": "John", "age": 30, "city": "New York"}'
minified_json = json.dumps(json.loads(json_string))
print(minified_json)  # 输出: {"name": "John", "age": 30, "city": "New York"}

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;

public class Main {
    public static void main(String[] args) throws Exception {
        String jsonString = "{\"name\": \"John\", \"age\": 30, \"city\": \"New York\"}";
        ObjectMapper mapper = new ObjectMapper();
        mapper.configure(SerializationFeature.WRITEWhitespace, false);
        String minifiedJson = mapper.writeValueAsString(mapper.readValue(jsonString, Object.class));
        System.out.println(minifiedJson);  // 输出: {"name":"John","age":30,"city":"New York"}
    }
}