Java 在Spring Boot应用程序中导致"；MediaTypeNotSupportdException&qot；的映像上载

我正在使用Thymeleaftry 同时上传图像和图片，但当我try 时，它会导致:

"不支持已解析的[org.springframework.web.HttpMediaTypeNotSupportedException:内容类型‘应用程序/x-www-Form-urlencode’]"

Thymeleaf的实现如下:

<form id="application" th:action="@{/admin/newapplication}" th:object="${application}" method="post">
    <h1>Add Application</h1>
    <div class="input">
        <input type="text" name="applicationName" placeholder="Application Name" required>
        <i class='bx bxs-user'></i>
    </div>
    <div class="input">
        <input type="text" name="password" placeholder="Password to access application" required>
        <i class='bx bxs-lock-alt' ></i>
    </div>
    <input type="file" name="imageFile" accept="image/x-png,image/jpeg,image/jpg"/>
    <div class="input">
        <select name="applicationType" id="Application Type">
            <option value="admin">Navigation</option>
            <option value="user">Waste Management</option>
            <option value="user">Energy Consumption</option>
        </select>
    </div>

    <button type="submit" class="btn">Register Application</button>
</form>

在控制器中，它看起来像这样:

@PostMapping(value = "/newapplication", consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
public String addApplication(@ModelAttribute Application application, @RequestParam(value = "file",required = false) MultipartFile file) throws IOException {
    applicationRepository.save(application);
    fileService.uploadImage(file.getOriginalFilename(),file);
    return "addApplication";
}

我try 了在IntelliJ中进行调试，但由于在胸腺叶端的初始上传过程中出现错误，此方法从未达到.