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
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
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
<!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
@RequestMapping("/user_info") public Map<String, String> testMap() { throw new MyException(500, "手动抛出"); }
效果
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