根据我的工作经历来看，我主要遵循以下几点：
@ControllerAdvice
public class GlobalExceptionHandler implements ApplicationContextAware {
private static final Logger logger = LoggerFactory.getLogger(GlobalExceptionHandler.class);
private ApplicationContext applicationContext;
@Override
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
this.applicationContext = applicationContext;
}
@ExceptionHandler
public Object businessExceptionHandler(Exception exception, HttpServletRequest req) {
DtoResult response = new DtoResult();
if (exception instanceof BusinessException) {
int code = ((BusinessException) exception).getErrorCode();
response.setCode(code > 0 ? code : DtoResult.STATUS_CODE_BUSINESS_ERROR);
response.setMessage(exception.getMessage());
} else if (exception instanceof NotAuthorizedException) {
response.setCode(DtoResult.STATUS_CODE_NOT_AUTHORIZED);
response.setMessage(exception.getMessage());
} else {
response.setCode(DtoResult.STATUS_CODE_SYSTEM_ERROR);
String profile = applicationContext.getEnvironment().getProperty("spring.profiles.active");
if (profile != GlobalConst.PROFILE_PRD) {
response.setMessage(exception.toString());
} else {
response.setMessage("系统异常");
}
logger.error("「系统异常」", exception);
}
String contentTypeHeader = req.getHeader("Content-Type");
String acceptHeader = req.getHeader("Accept");
String xRequestedWith = req.getHeader("X-Requested-With");
if ((contentTypeHeader != null && contentTypeHeader.contains("application/json"))
|| (acceptHeader != null && acceptHeader.contains("application/json"))
|| "XMLHttpRequest".equalsIgnoreCase(xRequestedWith)) {
HttpStatus httpStatus = HttpStatus.OK;
if (response.getCode() == DtoResult.STATUS_CODE_SYSTEM_ERROR) {
httpStatus = HttpStatus.INTERNAL_SERVER_ERROR;
}
return new ResponseEntity<>(response, httpStatus);
} else {
ModelAndView modelAndView = new ModelAndView();
modelAndView.addObject("detailMessage", response.getMessage());
modelAndView.addObject("url", req.getRequestURL());
modelAndView.setViewName("error");
return modelAndView;
}
}
}
themyleaf默认使用HTML5模式，此模式比较严格，比如当标签没有正常闭合，属性书写不正确时都会报错，比如以下格式
# meta标签没有闭合
<!DOCTYPE html>
<html xmlns:th="http://www.w3.org/1999/xhtml">
<head>
<meta charset="UTF-8">
<title>程序出错了 - 智联</title>
</head>
<body>
<p>程序出错了...</p>
<p>请求地址：<span th:text="${url}"></span></p>
<p>详情：<span th:text="${detailMessage}"></span></p>
</body>
</html>
# 属性v-cloak不符合格式
<div v-cloak></div>
解决方法
可以在配置文件中增加 spring.thymeleaf.mode=LEGACYHTML5 配置项，默认情况下是 spring.thymeleaf.mode=HTML5,
LEGACYHTML5 需要搭配第三方库 nekohtml 才可以使用。
# 1.在 pom.xml 中增加如下内容：
<!-- https://mvnrepository.com/artifact/net.sourceforge.nekohtml/nekohtml -->
<dependency>
<groupId>net.sourceforge.nekohtml</groupId>
<artifactId>nekohtml</artifactId>
<version>1.9.22</version>
</dependency>
# 2.修改 application.properties 为：
############################## thymeleaf ##############################
spring.thymeleaf.cache=false
# spring.thymeleaf.mode=HTML5
spring.thymeleaf.mode=LEGACYHTML5
############################## thymeleaf ##############################
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