what this!, return a empty object?

[imohuan]

import {
  JsonConvert,
  JsonObject,
  JsonProperty,
  OperationMode,
  ValueCheckingMode,
} from "json2typescript";

@JsonObject("User")
class User {
  @JsonProperty("username", String)
  username: string;
  @JsonProperty("password", String)
  password: string;
}

const json: object = {
  username: "admin",
  password: "admin",
  other: "other",
};

const jsonConvert = new JsonConvert();
jsonConvert.operationMode = OperationMode.LOGGING;
jsonConvert.ignorePrimitiveChecks = false;
jsonConvert.valueCheckingMode = ValueCheckingMode.DISALLOW_NULL;

const result = jsonConvert.deserializeObject(json, User);
console.log(result, result.username);

return

---

Receiving JSON object:
{ username: 'admin', password: 'admin', other: 'other' }
Returning CLASS instance:
User {}
----------
User {} undefined

I wrote it against the official code? What did I do wrong?

Why ?

[imohuan]

ts-node 执行代码
版本"json2typescript": "^1.4.1",

[andreas-aeschlimann]

Hello @imohuan and thank you for your question!

I think everything is correct except a little detail:

Important note: You must assign any (valid) value or undefined to your property at initialization, otherwise our mapper does not work and will simply ignore the property.

(from the docs)

Try this and it should work:

@JsonObject("User")
class User {
  @JsonProperty("username", String)
  username: string = "";
  @JsonProperty("password", String)
  password: string = "";
}

[imohuan]

thanks!

Maybe I didn't see it