这是我的代码:
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<title>???????????</title>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
<link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css">
<link rel="stylesheet" href="css/login.css">
</head>
<body>
<div class="container" id="login">
<div class="col-md-6 col-md-offset-3">
<div class="page-header">
<h1>???????????</h1>
</div>
<form>
<div class="form-group">
<label>???</label>
<div class="input-group">
<div class="input-group-addon"><i class="glyphicon glyphicon-user"></i></div>
<input type="text" v-model="account.username" class="form-control" placeholder="Username" required
autofocus>
</div>
</div>
<div class="form-group">
<label>??</label>
<div class="input-group">
<div class="input-group-addon"><i class="glyphicon glyphicon-lock"></i></div>
<input type="password" v-model="account.password" class="form-control" placeholder="Password"
required>
</div>
</div>
<button v-on:click="validate" class="btn btn-lg btn-primary btn-block">??</button>
</form>
</div>
</div>
<script src="https://unpkg.com/vue/dist/vue.js"></script>
<script src="https://unpkg.com/axios@0.12.0/dist/axios.min.js"></script>
<script src="js/login.js"></script>
</body> …fontScale = 1
fontThickness = 1
# make sure font thickness is an integer, if not, the OpenCV functions that use this may crash
fontThickness = int(fontThickness)
upperLeftTextOriginX = int(imageWidth * 0.05)
upperLeftTextOriginY = int(imageHeight * 0.05)
textSize, baseline = cv2.getTextSize(resultText, fontFace, fontScale, fontThickness)
textSizeWidth, textSizeHeight = textSize
# calculate the lower left origin of the text area based on the text area center, width, and height
lowerLeftTextOriginX = upperLeftTextOriginX
lowerLeftTextOriginY = upperLeftTextOriginY + textSizeHeight
# write the text on …我想在获取数据后执行一些副作用，例如 setState 和更新上下文。但是，当数据在缓存中时，onSuccess 不会执行。另外 useEffect 不起作用，因为如果数据被缓存，它不会从未定义的数据更改为真实数据。因此它也不会被触发。这样做的最佳方法是什么？谢谢