如何让 System.Text.Json 不对双引号进行编码

比如下面的 json 序列化代码

var json = JsonSerializer.Serialize(new { payload = new { paramStr = "{\"page\":1,\"pageSize\":10}" } });
Console.WriteLine(json);

时间输出是

{"payload":{"paramStr":"{\u0022page\u0022:1,\u0022pageSize\u0022:10}"}}

期望的输出是

{"payload":{"paramStr":"{\"page\":1,\"pageSize\":10}"}}

请问如何实现？

回答

通过 JavaScriptEncoder.UnsafeRelaxedJsonEscaping 解决了

var json = JsonSerializer.Serialize(
    new { payload = new { paramStr = "{\"page\":1,\"pageSize\":10}" } },
    new JsonSerializerOptions { Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping }
    );
Console.WriteLine(json);