springboot实现自定义的错误页面展示

https://blog.csdn.net/trusause/article/details/84299886 参考

SpringBoot默认的错误处理机制

默认效果为: 返回一个默认的错误页面 Whitelabel Error Page

这里使用这个类:

package com.c23i23l.c123.config;

import org.springframework.boot.web.server.ErrorPage;
import org.springframework.boot.web.server.ErrorPageRegistrar;
import org.springframework.boot.web.server.ErrorPageRegistry;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpStatus;

@Configuration
public class ErrorConfigurar implements ErrorPageRegistrar {

    @Override
    public void registerErrorPages(ErrorPageRegistry registry) {
        ErrorPage[] errorPages = new ErrorPage[2];
        errorPages[0] = new ErrorPage(HttpStatus.NOT_FOUND, "/error404");
        errorPages[1] = new ErrorPage(HttpStatus.INTERNAL_SERVER_ERROR, "/500.html");

        registry.addErrorPages(errorPages);
    }
}

即完成了自定义的页面跳转,其实/error404和/error500是controller层的页面跳转.