javascript - 字符集有什么问题？

Question

尝试使用 JSON 格式将请求数据从 JavaScript 发送到 Java。JavaScript 中的请求正文如下所示:

{
    "id": "3",
    "name": "Chicken pasta",
    "description": "Lets make chicken pasta",
    "category": "Unassigned",
    "favorite": true,
    "prepTime": "",
    "cookTime": "",
    "ingredients": [
        {}
    ],
    "steps": [],
    "user": {
        "id": "2",
        "username": "user2"
    }
}

但是在服务器端(在我的 Java Controller 中)它是:

%7B%0A%09%22id%22%3A+%223%22%2C%0A%09%22name%22%3A+%22Chicken+pasta%22%2C%0A%09%22description%22%3A+%22Lets+make+chicken+pasta%22%2C%0A%09%22category%22%3A+%22Unassigned%22%2C%0A%09%22favorite%22%3A+true%2C%0A%09%22prepTime%22%3A+%22%22%2C%0A%09%22cookTime%22%3A+%22%22%2C%0A%09%22ingredients%22%3A+%5B%0A%09%09%7B%7D%0A%09%5D%2C%0A%09%22steps%22%3A+%5B%5D%2C%0A%09%22user%22%3A+%7B%0A%09%09%22id%22%3A+%222%22%2C%0A%09%09%22username%22%3A+%22user2%22%0A%09%7D%0A%7D=

所以我得到了 JSON 解析异常。那么如何编码呢？​​

Answer 1

您在服务器上收到的字符串是经过 URL 编码的。您需要先对其进行 URL 解码，然后才能将其解析为 JSON。参见 this SO question关于java中的URL解码。