Spring 全局异常处理

主要介绍  @ControllerAdvice 注解方式

代码：

@ControllerAdvice
public class GlobalExceptionHandler {

    @ExceptionHandler(Exception.class)
    public ModelAndView globalHandler(HttpServletRequest request,
            HttpServletResponse response, Exception ex) {
        ModelAndView mv = new ModelAndView(new MappingJackson2JsonView());
        if (!isAnsynJsonRequest(request)) {
            mv = new ModelAndView("error/500");
        }
        mv.addObject("code", 500);
        mv.addObject("msg", "系统异常");
        mv.addObject("message", ex.getMessage());
        mv.addObject("detail", ex.getClass().getName());
        mv.addObject("cause root", ex.getStackTrace()[0]);
        return mv;

    }

    private boolean isAnsynJsonRequest(HttpServletRequest request) {
        return request.getRequestURI().contains("/api")
                || request.getHeader("accept").contains("application/json")
                || (request.getHeader("X-Requested-With") != null && request
                        .getHeader("X-Requested-With").contains(
                                "XMLHttpRequest"));
    }
}

 其中 isAnsynJsonRequest 方法用于判断当前请求是否是异步或者是 /api路径（一般api只返回数据不返回页面）

error/500是 WEB-INF/目录下的错误页面的路径