无法保存修改 JSON

Question

我保存在磁盘上的原始 JSON：R:\Desktop\alamo\dd

{
    "Name": "ABC.com",
    "Developer": "Ram Kumar",
    "Project List": [
        "Compnay: National",
        "Compnay: Enterprise",
        "Compnay: Alamo"
    ]
}

我删除特定子节点的代码：“Name”

public static void main(String[] args) throws IOException {
        String locationPath = "R:\\Desktop\\alamo\\dd";
        for (File locFile : new File(locationPath).listFiles()){
            ObjectMapper mapper = new ObjectMapper();
            ObjectNode obj = (ObjectNode) mapper.readTree(locFile);

            JsonNode tree1 = mapper.readTree(locFile); //Parse Specific JSON from Rental
            if(obj.has("Name")){
                obj.remove("Name");
                }
            System.out.println(obj);
            /* if(tree1.has("Name"))
            {
                ((ObjectNode) tree1).remove("Name");
            }*/
        }
    }

控制台输出：{"Developer":"Ram Kumar","Project List":["Compnay: National","Compnay: Enterprise","Compnay: Alamo"]}

根据修改，控制台上的输出是正确的，但是当我看到我的 json 文件时，它仍然有 Name 子节点。 怎么回写？？ 谢谢

Answer 1

您只需运行FileWriter 即可将删除的字符串再次写入文件中。

// If this output prints correct value then write value
System.out.println(obj);

FileWriter fw = new FileWriter(locationPath);
fw.write(obj.toString());
fw.close();