How to remove the redirect response header from ExceptionHandler?

[KonngExplorer]

@Controller
@RequestMapping("/htmx/admin/user/")
public class HxAuthController {
    @HxRequest
    @RequestMapping("doLogin")
    @HxRedirect("/admin/document/article/article-table")
    public String doLogin(@RequestBody LoginRequest request) {
        String password = request.getPassword();
        String username = request.getUsername();

        if (StrUtil.isBlank(email) && StrUtil.isBlank(username)) {
            throw new LoginException(USERNAME_INCORRECT, "Account or password error",);
        }

        if (StrUtil.isBlank(password)) {
            throw new LoginException(PASSWORD_INCORRECT, "Account or password error");
        }

        boolean success = authService.login(username , password);

        if (!success) {
            throw new LoginException(INTERNAL_ERR, "login failed", false);
        }

        return "none";
    }
}

@ControllerAdvice
@Slf4j
public class GlobalExceptionHandler {
    @ExceptionHandler({LoginException.class})
    @ResponseBody
    public Object handleException(LoginException e, HttpServletRequest request, HttpServletResponse response) {
        ModelAndView modelAndView = new ModelAndView();

        if (request.getHeader(HtmxRequestHeader.HX_REQUEST.getValue()) != null) {
            modelAndView.addObject("msg", e.getMessage());
            response.addHeader(HtmxResponseHeader.HX_RESWAP.getValue(), HxSwapType.BEFORE_END.getValue());
            response.addHeader(HtmxResponseHeader.HX_RESELECT.getValue(), "#alert-warning");
            response.addHeader(HtmxResponseHeader.HX_RETARGET.getValue(), "body");
            modelAndView.setViewName("admin/component/alert-warning");
            return modelAndView;
        }
        return RestResult.failure(e.getMessage());
    }
}

According to the above code, I set the redirect url for successful login using HxRedirect annotation in Controller, I handle the login exception in Handler method of exception handling class, when the exception occurs I want to prompt instead of redirect, after testing whether I set HtmxResponseHeader.HX_REDIRECT in Handler exception handling method or not, it will redirect to "/htmx/admin/user/", is there something wrong with me?

[KonngExplorer]

By the way, the version of the dependency I use is as follows

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.4.0</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <dependency>
            <groupId>io.github.wimdeblauwe</groupId>
            <artifactId>htmx-spring-boot</artifactId>
            <version>4.0.1</version>
    </dependency>

[xhaggi]

@KonngExplorer In your case, it would be better to use the programmatic approach and redirect to /admin/document/article/article-table upon successful login. In your @ExceptionHandler method, you can inject HtmxRequest and HtmxResponse to check whether the request was made by htmx and to add htmx-related headers.

I'm not sure whether using @ResponseBody on the @ExceptionHandler method impacts the further processing of our HtmxResponse, without it will work. Give it a try and let me know.

@Controller
@RequestMapping("/htmx/admin/user/")
public class HxAuthController {
    @HxRequest
    @RequestMapping("doLogin")
    public String doLogin(@RequestBody LoginRequest request) {
        <your code>

        return "redirect:htmx:/admin/document/article/article-table";
    }
}

@ControllerAdvice
@Slf4j
public class GlobalExceptionHandler {
    @ExceptionHandler(LoginException.class)
    @ResponseBody
    public Object handleException(LoginException e, HtmxRequest htmxRequest, HtmxResponse htmxResponse) {
        if (htmxRequest.isHtmxRequest()) {
            htmxResponse.setReswap(HtmxReswap.beforeEnd());
            htmxResponse.setReselect("#alert-warning");
            htmxResponse.setRetarget("body");

            ModelAndView mav = new ModelAndView();
            mav.addObject("msg", e.getMessage());
            mav.setViewName("admin/component/alert-warning");
            return mav;
        }

        return RestResult.failure(e.getMessage());
    }
}