方式3. 自定义实现错误视图解析，统一错误处理
如果不想要使用缺省的错误处理视图解析器，想要定制一些自己的东西（比如说：错误引导信息等），按照官方文档的建议我们可以自定义实现错误视图解析接口来处理。
下面就是通过实现错误视图解析接口ErrorViewResolver，将4xx、5xx的错误页面集中在一个自定义视图上：
1）实现 ErrorViewResolver 接口
package com.hongyang.admin.web;import org.springframework.boot.autoconfigure.web.servlet.error.ErrorViewResolver;import org.springframework.http.HttpStatus;import org.springframework.stereotype.Component;import org.springframework.web.servlet.ModelAndView;import javax.servlet.http.HttpServletRequest;import java.util.Map;/** * 实现自定义的错误视图解析器
*/@ComponentpublicclassAdminErrorViewResolverimplements ErrorViewResolver {
/** * 实现ErrorViewResolver约定方法，
* 返回统一的错误视图.
* @param request
* @param status
* @param model
* @return*/ @Override
publicModelAndView resolveErrorView(HttpServletRequest request, HttpStatus status, Map model) {
returnnewModelAndView("/error/index", model);
}
}
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2）完成错误视图，在templates/error下添加index.ftlh视图（freemarker模板）
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<!DOCTYPE html><html><head ><link href="/content/public/images/logo-small.png" rel="shortcut icon"/><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>${status}</title><meta name="renderer" content="webkit"><meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"><meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1"><meta name="apple-mobile-web-app-status-bar-style" content="black"><meta name="apple-mobile-web-app-capable" content="yes"><meta name="format-detection" content="telephone=no"><style> body { position: fixed; z-index: 10; top: 0; left: 0; right: 0; bottom: 0; width: 100%; padding: 0; margin: 0px; font-size: 14px; background: #fff; word-wrap: break-word;} p { padding: 0 15px;} .btn { border: 0px; color: #fff; cursor: pointer; text-align: center; background-color: #ff7a5f\0; box-shadow: #cccccc 0 2px 15px 0; -webkit-box-shadow: 0 2px 7px 0 rgba(0,0,0,0.2); background: radial-gradient(circle at 300% 50%, rgb(255, 195, 114) 50%, rgb(255, 105, 90) 100%); transition: all .2s ease-out,box-shadow .2s ease-out;} .btn:hover { color: #FFFFFF; transform: scale(1.1);} .btn:focus { outline: none;} .container { margin: 8% auto;} .container p { margin: 35px auto; text-align: center;} .container img { width: 20%;} .container .font { color: #848484;} .container .btn-back { width: 180px; height: 35px; border-radius: 6px;} #container-info { display: none; position: fixed; z-index: 11; top: 5%; left: 0; right: 0; margin: 0 auto; width: 65%; height: 85%; overflow: hidden; border-radius: 4px; border: 1px solid #f1986e; background-color: #fff; box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgb(242, 154, 110);} #container-info .btn-close { position: absolute; right: 5px; top: 5px; width: 25px; height: 25px; line-height: 25px; font-size: 22px; padding: 2px; border-radius: 50%; text-align: center;} #container-info p { font-size: 12px; line-height: 20px;} .show { display: block !important;} .cor-r { color: red;} @media (max-width: 767px) { .container img {
width: 50%;} #container-info { width: 85%;} }
.panel-heading { height: 32px; line-height: 32px; padding: 5px 15px;} .panel-body { height: calc(85vh - 40px); overflow: auto;} .panel-orange .panel-heading { background-color: #ffa0681f; color: #ff6f5c;}</style></head><body><form id="form1"><div class="container"><p><img src="/content/public/images/error_${status}.png"/></p><p class="font">${error}，<a onclick="errorDetail(true)" href="javascript: void(0)">点击查看明细</a>!</p><p><button type="button" class="btn btn-back" id="btnBack">返回</button></p></div><div id="container-info"><span class="btn btn-close" onclick="errorDetail(false)">×</span><div class="panel panel-orange"><div class="panel-heading"> 错误说明
</div><div class="panel-body"><#if path??><p><b>请求的URL：</b>${path}</p></#if><#if message??><p><b>异常信息：</b><span class="cor-r">${message}</span></p></#if><#if trace??><p><b>StackTrace：</b><br>${trace}</p></#if></div></div></div><script type="text/javascript"> window.onload =function () {
var btn = document.getElementById("btnBack");
btn.onclick =function () {
var url = document.referrer;
if (url.indexOf("home/main") >0) {
window.parent.tabDelete();
return;
}
window.history.back(-1);
}
}
function errorDetail(isShow) {
var con = document.getElementById("container-info");
con.className = isShow ?"show" : ""; // 兼容IE8 }
</script></form></body></html>
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