当发生异常时, 跳转到我们自定义的异常处理页面.
SpringBoot中只需在静态资源目录下创建一个error文件夹, 并把异常处理页面放入其中, 页面的命名与异常错误代码对应, 如404.html, 500.html.
5xx.html可以对应所有错误代码为5开头的错误
默认静态资源目录为类路径(resources)下的：
HelloController
package com.limi.springboottest2.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller
public class HelloController {
@ResponseBody
@GetMapping("/test1")
public String test1(){
int i = 10/0; //模拟500异常
return "ok";
}
}404.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<h1>这是自定义404</h1>
</body>
</html>5xx.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<h1>这是自定义5xx</h1>
</body>
</html>
测试404
测试500
使用postman测试
{
"timestamp": "2022-06-22T04:12:13.740+00:00",
"status": 500,
"error": "Internal Server Error",
"trace": "java.lang.ArithmeticException: / by zero\r\n\tat com.limi.springboottest2.controller.HelloController.test1(HelloController.java:14),
"message": "/ by zero",
"path": "/test1"
}
返回的信息我们可以使用模板引擎(如thymeleaf)获取并写入自定义的异常处理页面中
