导入thymeleaf
- pom.xml
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>自定义异常类
- 建立监听异常类
MyException.class
代码语言：javascript复制package com.example.demo.domain;
public class MyException extends RuntimeException {
private int code;
private String msg;
public MyException(int code, String msg) {
this.code = code;
this.msg = msg;
}
public int getCode() {
return code;
}
public void setCode(int code) {
this.code = code;
}
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
}CustomExtHandle 监测异常
代码语言：javascript复制package com.example.demo.domain;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Logger;
@RestControllerAdvice
public class CustomExtHandle {
// 捕获全局异常
@ExceptionHandler(value = Exception.class)
Object handleException(Exception e, HttpServletRequest request) {
Map<String, Object> map = new HashMap<>();
map.put("code", 100);
map.put("msg", e.getMessage());
map.put("url", request.getRequestURL());
return map;
}
// 如果是Myexception类
@ExceptionHandler(value = MyException.class)
Object handleMyException(MyException e, HttpServletRequest request) {
ModelAndView modelAndView = new ModelAndView();
modelAndView.setViewName("error.html"); // 指定错误跳转页面 需要在templates里面新建 一个error.html
modelAndView.addObject("msg", e.getMsg());
modelAndView.addObject("code", e.getCode());
modelAndView.addObject("url", request.getRequestURL());
return modelAndView;
// 当然这里也可以返回json数据 前后台分离的话直接返回一个json即可
}
}template/error.html
代码语言：javascript复制<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<h1>出异常了</h1>
<span>错误信息：</span><h1 th:text="${msg}"></h1> // 获取变量
<span>错误状态码：</span><h1 th:text="${code}"></h1>
<span>失败API地址：</span><h1 th:text="${url}"></h1>
</body>
</html>使用
代码语言：javascript复制@RequestMapping("/user_info")
public Map<String, String> testMap() {
throw new MyException(500, "手动抛出");
}效果
