无法将当前JSON数组（例如[1,2,3]）反序列化为类型'TenantManagementWebApi.Entities.Tenant

您

model

string

JSON

await modelContent.ReadAsStringAsync()

[objectObject]

您必须自己照顾JSON序列化。

更换

data.append("model", { "TenantId": this.state.TenantId, "TenantUrl": this.state.TenantUrl, "TenantPassword": this.state.TenantPassword });

与

data.append("model", JSON.stringify({ "TenantId": this.state.TenantId, "TenantUrl": this.state.TenantUrl, "TenantPassword": this.state.TenantPassword }));