uniapp暂不支持自定义webview所以我们用自带的error
首先在根目录新建生成此文件hybrid/html/error.html
在这里插入图片描述
在manifest.json（源码试图）中配置error，必须在app-plus下（这里要注意路径问题否则页面会找不到）在这里插入图片描述
error页面是一个单独页面不支持upx，rem在移动端也不生效（尚不知原因），我直接用的px

<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
		<meta name="HandheldFriendly" content="true" />
		<meta name="MobileOptimized" content="320" />
		<title>Error</title>
		<script type="text/javascript">
			var ab_ = {
				plusReady(callback) {
					if (window.plus) {
						callback()

					} else {
						document.addEventListener('plusready', callback)
					}
				}
			}

			ab_.plusReady(function() {
				var native
				var center
				try {
					native = plus.os.name.toLowerCase()
					if (native === 'android') {
						center = plus.android.importClass("com.absir.uniplugin.AbCenter").ME()

					} else if (plus.ios) {
						center = plus.ios.importClass("AbCenter").ME()
					}

				} catch (e) {
					console.error(e)
				}

				ab_.native = native
				ab_.center = center
				ab_.postEvent = function(event, paras) {
					if (center) {
						if (native === 'android') {
							center.postEvent(event, paras)

						} else {
							plus.ios.invoke(center, 'postEvent:paras:', event, paras)
						}
						return true
					}
				}

				plus.key.addEventListener('backbutton', function() {
					backClick()
				}, false)
			})

			function backClick() {
				(history.length == 1) && closeClick();
				var c = setTimeout(function() {
					closeClick();
				}, 1000);
				window.onbeforeunload = function() {
					clearTimeout(c);
				}
				history.go(-2);
			}

			function closeClick() {
				ab_.postEvent('message', 'backProj')
			}

			function restartClick() {
				plus.runtime.restart()
			}
		</script>
		<style>
			* {
				-webkit-user-select: none;
			}

			html,
			body {
				margin: 0px;
				padding: 0px;
				width: 100%;
				height: 100%;
				text-align: center;
				word-break: break-all;
				-webkit-touch-callout: none;
				-webkit-tap-highlight-color: rgba(0, 0, 0, 0);
			}

			.button {
				width: 60%;
				font-size: 18px;
				font-weight: normal;
				text-decoration: none;
				text-align: center;
				padding: .5em 0em;
				margin: .5em auto;
				color: #333333;
				border-radius:22px;
			/* 	background-color: #EEEEEE;
				border: 1px solid #CCCCCC;
				-webkit-border-radius: 5px;
				border-radius:22px; */
			}

			.button:active {
				background-color: #CCCCCC;
			}
			.back{
				color: #6767EA;
				border: 1px solid #6767EA;
			}
			.reload{
				color: #fff;
				border: none;
				background: linear-gradient(to right, #6767EA, #75ACFF);
				margin-left: 60upx;
			}
		</style>
	</head>
	<body>
		<div style="width:100%;height:20%;"></div>
		<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="84px" height="94px" viewBox="0 0 84 94" enable-background="new 0 0 84 94" xml:space="preserve">  <image id="image0" width="84" height="94" x="0" y="0"
		    href="你的svg" />
		</svg>
		<p style="font-size:18px;font-weight:bolder;">抱歉，没有找到您请求的页面</p>
		<p id="info" style="font-size:12px;"></p>
		<!--<div class="button" onclick="history.back()">Retry</div>-->
		<div class="button back" onclick="backClick()">返回</div>
		<div class="button back" onclick="closeClick()">关闭</div>
		<div class="button reload" onclick="restartClick()">刷新</div>
	</body>
</html>
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原文链接：https://blog.csdn.net/weixin_43073383/article/details/102560446