SpringBoot默认异常默认处理机制

Spring boot错误异常时通过BasicErrorController来处理的

通过判断是浏览器请求还是ajax请求响应页面或者json

BasicErrorController部分源码

@RequestMapping(
        produces = {"text/html"}
    )
    public ModelAndView errorHtml(HttpServletRequest request, HttpServletResponse response) {
        HttpStatus status = this.getStatus(request);
        Map<String, Object> model = Collections.unmodifiableMap(this.getErrorAttributes(request, this.isIncludeStackTrace(request, MediaType.TEXT_HTML)));
        response.setStatus(status.value());
        ModelAndView modelAndView = this.resolveErrorView(request, response, status, model);
        return modelAndView != null ? modelAndView : new ModelAndView("error", model);
    }

    @RequestMapping
    @ResponseBody
    public ResponseEntity<Map<String, Object>> error(HttpServletRequest request) {
        Map<String, Object> body = this.getErrorAttributes(request, this.isIncludeStackTrace(request, MediaType.ALL));
        HttpStatus status = this.getStatus(request);
        return new ResponseEntity(body, status);
    }

可以看到只要是发生生异常浏览器请求都会默认返回error页面

覆盖springboot默认异常处理的异常页面

1.在resources/templates 下新增一个error html则可以对默认的error进行覆盖

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
动态error错误页面
<p th:text="${error}"></p>
<p th:text="${status}"></p>
<p th:text="${message}"></p>
</body>
</html>

发生错则打印

2.如果想对异常进行更细的划分比如404 跳转到404的错误页面 500跳转到500的错误页面

只需要在resources/templates/error 新建对应的编码的页面

Spring Boot-全局异常处理(八)

SpringBoot默认异常默认处理机制

覆盖springboot默认异常处理的异常页面

自定义异常

局部异常

全局异常

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