我正在使用图表Js显示条形字符。我需要使用的数据是不同的下拉列表。我的图表工作正常，除非当用户从下拉菜单中选择其他选项并且画布重新加载了新数据时，在鼠标上方的故障和画布在旧选择的数据与当前数据之间跳跃
我环顾四周以解决此问题，并发现以下方法
ChartJs在鼠标悬停时显示旧数据， 但不起作用
该代码是
<html>
<head>
<script src="http://code.jquery.com/jquery-1.4.2.min.js"></script>
<style type="text/css">
#ctx{max-width: 700px;
width:700px;
height: 350px;
max-height: 350px;}
</style>
</head>
<body>
Please select : <select id="mySelect" onchange="myFunction()">
<option value="Please Select">Please Select</option>
<option value="C001"> 001
<option value="C002"> 002
<option value="C003"> 003
</select>
<p id="demo"></p>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.6.0/Chart.min.js"></script>
<canvas id="ctx" ></canvas>
<script>
function myFunction() {
var x = document.getElementById("mySelect").value;
document.getElementById("demo").innerHTML = "You selected: " + x;
creatGraph(x);
}
function GetMyData(Id)
{
var data;
switch(Id) {
case "C001":// consultant 001
data = {labels: ['0 …我正在尝试学习如何将Add Jwt用于我正在使用的API.我已经介绍了如何使用Jwt构建API.我的应用程序现在确实生成了Jwt代码但是当我调用API的Authorize部分时,使用Authorization标头和Bearer使用post man我得到401 Unauthrized响应.我的代码是
StattUp.cs
public class Startup
{
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
public IConfiguration Configuration { get; }
// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
/**/
services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
.AddJwtBearer(options =>
{
options.TokenValidationParameters = new TokenValidationParameters
{
ValidateIssuer = true,
ValidateAudience = true,
ValidateLifetime = true,
ValidateIssuerSigningKey = true,
ValidIssuer = Configuration["Jwt:Issuer"],
ValidAudience = Configuration["Jwt:Issuer"],
IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(Configuration["Jwt:Key"]))
}; …