The JSON value could not be converted to System.Nullable`1[System.DateTime]. Path: $.addTime | LineNumber: 0

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Blazor 使用WebApiClientCore报错

是因为Json格式化时候日期时间中间必须要带T 解决方案就是yyyy-MM-dd HH:mm:ss 中间增加个T

//解决方案

改成yyyy-MM-dd T HH:mm:ss

builder.Services.AddHttpApi<IServiceTest>(c =>
                //设置请求前缀为当前的域名
                c.HttpHost = new Uri(builder.HostEnvironment.BaseAddress);
                // 报错则或者整个去掉  或者格式化字符串增加T
                c.JsonSerializeOptions.Converters.Add(new JsonLocalDateTimeConverter("yyyy-MM-ddTHH:mm:ss"));
            });

</div><div cm-not-content="true"/><div cm-not-content="true"/><div tabindex="-1" draggable="false"><div><div><div role="presentation"><div role="presentation"><div><pre>x</pre></div><div/><div/><div><div> </div></div><div role="presentation"><div><div><div>1</div></div><pre role="presentation"><span role="presentation"><span>builder</span>.<span>Services</span>.<span>AddHttpApi</span><span><</span><span>IServiceTest</span><span>></span>(<span>c</span> <span>=></span></span></pre></div><div><div><div>2</div></div><pre role="presentation"><span role="presentation">            {</span></pre></div><div><div><div>3</div></div><pre role="presentation"><span role="presentation">                <span>//设置请求前缀为当前的域名</span></span></pre></div><div><div><div>4</div></div><pre role="presentation"><span role="presentation">                <span>c</span>.<span>HttpHost</span> <span>=</span> <span>new</span> <span>Uri</span>(<span>builder</span>.<span>HostEnvironment</span>.<span>BaseAddress</span>);</span></pre></div><div><div/><div/><div><div>5</div></div><pre role="presentation"><span role="presentation">                <span>// 报错则或者整个去掉  或者格式化字符串增加T</span></span></pre></div><div><div><div>6</div></div><pre role="presentation"><span role="presentation">                <span>c</span>.<span>JsonSerializeOptions</span>.<span>Converters</span>.<span>Add</span>(<span>new</span> <span>JsonLocalDateTimeConverter</span>(<span>"yyyy-MM-ddTHH:mm:ss"</span>));</span></pre></div><div><div><div>7</div></div><pre role="presentation"><span role="presentation">            });</span></pre></div></div></div></div></div></div><div/><div><div/></div></div></div></div></div>