Question

我正在创建一个应该接受JSON作为输入参数的Controller。 JSON很简单，如下所示

 public class CodeDTO
 {
    public class RootObject
    {
        public string Barcode { get; set; }
    }
 }

我为上面的JSON创建了一个模型类，如

 public class SetNameController : ApiController
  {
    [HttpPost]
    public async Task<IHttpActionResult> Get(CodeDTO bCode)
    {
      var returnObj = JsonConvert.DeserializeObject<CodeDTO.RootObject>(bCode);
        string Bar_Code = returnObj.Barcode.ToString();

        if (Bar_Code == "" || Bar_Code == null)
        {
            ............

现在，我需要接收此CodeDTO作为输入参数并解析它以找到BarCode

import hashlib
import os.path
from secure import BadCharacterError


def setLayers(filePath, passwords, usernames=None):
    # sanity check
    if os.path.exists(filePath): raise FileExistsError
    if usernames is not None and len(usernames) != len(passwords): raise IndexError
    for name in usernames:
        if "|" in name: raise BadCharacterError("Username contained bad character '|'!")

    # Hash the passwords
    counter = 0
    for password in passwords:
        salt = ""
        if usernames is not None: salt = hashlib.sha512(usernames[counter].encode()).hexdigest()  # generate a salt
        hashedPassword = hashlib.sha512(salt.encode() + password.encode()).hexdigest()  # hash them together
        passwords[counter] = hashedPassword  # replace the list entry
        counter += 1

    # write them to a file
    with open(filePath, "a+") as file:
        counter = 0
        for password in passwords:
            if usernames is None:
                file.write(password)
            else:
                file.write(password + "|" + usernames[counter] + "\n")
            counter += 1


def checkLayer(filePath, password, username=None):
    # sanity check
    if not os.path.exists(filePath): raise FileNotFoundError

    # find the password hash
    salt = ""
    if username is not None: salt = hashlib.sha512(username.encode()).hexdigest()  # find the salt
    hashedPassword = hashlib.sha512(salt.encode() + password.encode()).hexdigest()  # hash them together

    with open(filePath, "r") as file:
        db = file.read().split("\n")
        counter = 0
        if username is not None:
            for entry in db:
                entry = entry.split("|")
                dbPassword = entry[0]
                dbUsername = entry[1]
                if dbPassword == hashedPassword and dbUsername == username:
                    return counter
                counter += 1
        elif username is None:
            for entry in db:
                if hashedPassword == entry:
                    return counter
                counter += 1

        return False  # we will only reach this point if all of the others were not matched

但它会抛出以下错误，如

最佳重载方法匹配＆＃39; Newtonsoft.Json.JsonConvert.DeserializeObject（字符串， params Newtonsoft.Json.JsonConverter []）＆＃39;有一些无效的论点

如何反序列化JSON并获取元素

Answer 1

您不需要自己进行反序列化，请按以下步骤进行更改：

 public async Task<IHttpActionResult> Get([FromBody] CodeDTO.RootObject bCode)
 {
     string Bar_Code = bCode.Barcode.ToString(); 
 }

当您发布数据时，请在标头请求中指定内容类型：

contentType:"application/json"

接收JSON作为Web API的输入

1 个答案: