微人事第四天：自定义异常视图

连按两次shift可以看到在ErrorMvcAutoConfiguration中的 DefaultErrorViewResolve方法是用来处理自定义异常视图的。（生效的条件是我们没有提供自定义异常视图）

 @Bean
        @ConditionalOnBean({DispatcherServlet.class})
        @ConditionalOnMissingBean({ErrorViewResolver.class})
        DefaultErrorViewResolver conventionErrorViewResolver() {
            return new DefaultErrorViewResolver(this.applicationContext, this.resourceProperties);
        }

如果我们不用默认的自定义异常视图，我们需要自己配置一个类。

package org.javaboy.exception;

import org.springframework.boot.autoconfigure.web.ResourceProperties;
import org.springframework.boot.autoconfigure.web.servlet.error.DefaultErrorViewResolver;
import org.springframework.context.ApplicationContext;
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;

@Component
public class MyErrorViewResolver extends DefaultErrorViewResolver {

    public MyErrorViewResolver(ApplicationContext applicationContext, ResourceProperties resourceProperties) {
        super(applicationContext, resourceProperties);
    }

    @Override
    public ModelAndView resolveErrorView(HttpServletRequest request, HttpStatus status, Map<String, Object> model) {
        ModelAndView mv = new ModelAndView();
        mv.setViewName("javaboy");
        mv.addAllObjects(model);
        return mv;
    }
}

然后再templates下写一个异常类：

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <h1>javaboy-5xx</h1>
    <table border="1">
        <tr>
            <td>path</td>
            <td th:text="${path}"></td>
        </tr>
        <tr>
            <td>timestamp</td>
            <td th:text="${timestamp}"></td>
        </tr>
        <tr>
            <td>message</td>
            <td th:text="${message}"></td>
        </tr>
        <tr>
            <td>error</td>
            <td th:text="${error}"></td>
        </tr>
        <tr>
            <td>status</td>
            <td th:text="${status}"></td>
        </tr>
        <tr>
            <td>myerror</td>
            <td th:text="${myerror}"></td>
        </tr>
    </table>
</body>
</html>

访问路径：http://localhost:8080/hello
显示：
在这里插入图片描述

YRZ-James

发布了287 篇原创文章 · 获赞 24 · 访问量 2万+

私信关注

微人事第四天：自定义异常视图

猜你喜欢