我遇到此错误，而不是如何解决
@Controller
public class UserController {
@Autowired
UserService userService;
@Autowired
RoleRepository roleRepository;
@GetMapping({"/","/login"})
public String index() {
return "index";
}
@GetMapping("/signup")
public String signup(Model modelo) {
Role userRole=roleRepository.findByName("USER");
List<Role>roles=Arrays.asList(userRole);
modelo.addAttribute("userForm", new User());
modelo.addAttribute("roles",roles);
modelo.addAttribute("signup",true);
return "user-form/user-signup";
}
@PostMapping("/signup")
public String postSignup(@Valid @ModelAttribute("userForm")User user,BindingResult result,Model modelo){
if(result.hasErrors()) {
return signup(modelo);
}else {
try {
userService.createUser(user);
} catch (Exception e) {
modelo.addAttribute("formErrorMessage",e.getMessage());
return signup(modelo);
}
}
return "index";
}
@GetMapping("/userForm")
public String userForm(Model modelo) {
modelo.addAttribute("userForm", new User());
modelo.addAttribute("userList",userService.getAllUsers());
modelo.addAttribute("roles",roleRepository.findAll());
modelo.addAttribute("listTab","active");
return "user-form/user-view";
}
@PostMapping("/userForm")
public String createUser(@Valid @ModelAttribute("userForm")User user,BindingResult result,ModelMap modelo){
if(result.hasErrors()) {
modelo.addAttribute("userForm", user);
modelo.addAttribute("formTab","active");
}else {
try {
userService.createUser(user);
modelo.addAttribute("userForm", new User());
modelo.addAttribute("listTab","active");
} catch (Exception e) {
modelo.addAttribute("formErrorMessage",e.getMessage());
modelo.addAttribute("userForm", user);
modelo.addAttribute("formTab","active");
modelo.addAttribute("userList",userService.getAllUsers());
modelo.addAttribute("roles",roleRepository.findAll());
}
}
modelo.addAttribute("userList", userService.getAllUsers());
modelo.addAttribute("roles",roleRepository.findAll());
return "user-form/user-view";
}
@GetMapping("/editUser/{id}")
public String getEditUserForm(Model model, @PathVariable(name="id") Long id) throws Exception {
User usertToEdit=userService.getUserById(id);
model.addAttribute("userForm", usertToEdit);
model.addAttribute("userList",userService.getAllUsers());
model.addAttribute("roles",roleRepository.findAll());
model.addAttribute("formTab","active");
model.addAttribute("editMode","true");
model.addAttribute("passwordForm",new ChangePasswordForm(id));
return "user-form/user-view";
}
@PostMapping("/editUser")
public String postEditUserForm(@Valid @ModelAttribute("userForm")User user,BindingResult result,ModelMap modelo){
if(result.hasErrors()) {
modelo.addAttribute("userForm", user);
modelo.addAttribute("formTab","active");
modelo.addAttribute("editMode","true");
modelo.addAttribute("passwordForm",new ChangePasswordForm(user.getId()));
}else {
try {
userService.updateUser(user);
modelo.addAttribute("userForm", new User());
modelo.addAttribute("listTab","active");
modelo.addAttribute("editMode","false");
} catch (Exception e) {
modelo.addAttribute("formErrorMessage",e.getMessage());
modelo.addAttribute("userForm", user);
modelo.addAttribute("formTab","active");
modelo.addAttribute("userList",userService.getAllUsers());
modelo.addAttribute("roles",roleRepository.findAll());
modelo.addAttribute("editMode","false");
modelo.addAttribute("passwordForm",new ChangePasswordForm(user.getId()));
}
}
modelo.addAttribute("userList", userService.getAllUsers());
modelo.addAttribute("roles",roleRepository.findAll());
return "user-form/user-view";
}
@GetMapping("/userForm/cancel")
public String cancelEditUser(ModelMap model) {
return "redirect:/userForm";
}
@GetMapping("/deleteUser/{id}")
public String deleteUser(Model model, @PathVariable(name="id") Long id) {
try {
userService.deleteUser(id);
} catch (UsernameOrIdNotFound el) {
model.addAttribute("listErrorMessage",el.getMessage());
}
return userForm(model);
}
@PostMapping("/editUser/changePassword")
public ResponseEntity postEditUseChangePassword(@Valid @RequestBody ChangePasswordForm form, Errors errors) {
try {
if (errors.hasErrors()) {
String result = errors.getAllErrors()
.stream().map(x -> x.getDefaultMessage())
.collect(Collectors.joining(""));
throw new Exception(result);
}
userService.changePassword(form);
} catch (Exception e) {
return ResponseEntity.badRequest().body(e.getMessage());
}
return ResponseEntity.ok("Success");
//
}
}<div th:with="disableFields=!${editMode} and ${#authorization.expression('hasRole(''ROLE_USER'')')}">
<form class"form" role="form" autocomplete="off" th:object="${userForm}" th:action="${signup} ?/@{/signup} : (${editMode} ?@{/editUser} :@{/userForm})" method="post" >
<!--Es necesario para poder pasar la validacion del Model-->
<input class="form-control" type=hidden th:field="${userForm.id}" th:if="${editMode}">
<!--Es necesario para poder pasar la validacion del Model-->
<input class="form-control" type=hidden name="password" th:field="${userForm.password}" th:if="${editMode}">
<div class="form-group row">
<label class="col-lg-3 col-form-label form-control-label">Nombre</label>
<div class="col-lg-9">
<input class="form-control" type="text" th:field="${userForm.firstName}" th:disabled="${disableFields}">
<div class="alert-danger" th:if="${#fields.hasErrors('firstName')}" th:errors="*{firstName}">Name Error</div>
</div>
</div>
<div class="form-group row">
<label class="col-lg-3 col-form-label form-control-label">Apellido
</label>
<div class="col-lg-9">
<input class="form-control" type="text" th:field="${userForm.lastName}" th:disabled="${disableFields}">
<div class="alert-danger" th:if="${#fields.hasErrors('lastName')}" th:errors="*{lastName}">Name Error</div>
</div>
</div>
<div class="form-group row">
<label class="col-lg-3 col-form-label form-control-label">Email</label>
<div class="col-lg-9">
<input class="form-control" type="email" th:field="${userForm.email}" th:disabled="${disableFields}">
<div class="alert-danger" th:if="${#fields.hasErrors('email')}" th:errors="*{email}">Name Error</div>
</div>
</div>
<div class="form-group row">
<label class="col-lg-3 col-form-label form-control-label">Usuario</label>
<div class="col-lg-9">
<input class="form-control" type="text" th:field="${userForm.username}" th:disabled="${disableFields}" >
<div class="alert-danger" th:if="${#fields.hasErrors('username')}" th:errors="*{username}">Name Error</div>
</div>
</div>
<div class="form-group row">
<label th:text="Roles" class="col-lg-3 col-form-label form-control-label"></label>
<div class="col-lg-9">
<select class="form-control" th:size="@{signup}?1 :3" th:field="${userForm.roles}" th:disabled="${disableFields}">
<option th:each="role :${roles}" th:value="${role.id}" th:text="${role.name}">
</option>
</select>
<div class="alert-danger" th:if="${#fields.hasErrors('roles')}" th:errors="*{roles}">Name Error</div>
</div>
</div>
<div class="form-group row" th:if="${editMode==null or editMode==false}">
<label class="col-lg-3 col-form-label form-control-label">Password</label>
<div class="col-lg-9">
<input class="form-control" type="password" th:field="${userForm.password}" th:disabled="${disableFields}">
<div class="alert-danger" th:if="${#fields.hasErrors('password')}" th:errors="*{password}">Name Error</div>
</div>
</div>
<div class="form-group row" th:if="${editMode==null or editMode==false}">
<label class="col-lg-3 col-form-label form-control-label">Confirm</label>
<div class="col-lg-9">
<input class="form-control" type="password" th:field="${userForm.confirmPassword}" th:disabled="${disableFields}">
<div class="alert-danger" th:if="${#fields.hasErrors('confirmPassword')}" th:errors="*{confirmPassword}">Name Error</div>
</div>
</div>
<div class="form-group row">
<div class="col-lg-12 text-center">
<a class="btn btn-secondary" th:href="@{'/userForm/cancel'}"> Cancel</a>
<button type="button" class="btn btn-secondary" data-toggle="modal" th:if="${editMode}" data-backdrop="false" data-dismiss="modal" data-target="#changePasswordModal">Change Password</button>
<div th:if="${editMode}" th:include="user-form/change-password.html" th:remove="tag"></div>
<input type="submit" class="btn btn-primary"
value="Save Changes" th:value="${editMode}?'Save User':'Create User'">
</div>
</div>
<div class="alert alert-danger text-center" th:if="${formErrorMessage}" th:text="${formErrorMessage}">Error MEssage</div>
<div class="alert alert-success text-center d-none" id="formSuccess" th:if="${editMode}" >Success Message</div>
</form>
</div>
错误：
org.thymeleaf.exceptions.TemplateProcessingException: Could not parse as expression: "${/signup} ?/@{/signup} : (${editMode} ?@{/editUser} :@{/userForm})" (template: "user-form/user-form.html" - line 3, col 75)
at org.thymeleaf.standard.expression.StandardExpressionParser.parseExpression(StandardExpressionParser.java:131) ~[thymeleaf-3.0.11.RELEASE.jar:3.0.11.RELEASE]
at org.thymeleaf.standard.expression.StandardExpressionParser.parseExpression(StandardExpressionParser.java:62) ~[thymeleaf-3.0.11.RELEASE.jar:3.0.11.RELEASE]
at org.thymeleaf.standard.expression.StandardExpressionParser.parseExpression(StandardExpressionParser.java:44) ~[thymeleaf-3.0.11.RELEASE.jar:3.0.11.RELEASE]
at org.thymeleaf.engine.EngineEventUtils.parseAttributeExpression(EngineEventUtils.java:220) ~[thymeleaf-3.0.11.RELEASE.jar:3.0.11.RELEASE]
at org.thymeleaf.engine.EngineEventUtils.computeAttributeExpression(EngineEventUtils.java:207) ~[thymeleaf-3.0.11.RELEASE.jar:3.0.11.RELEASE]
at org.thymeleaf.standard.processor.AbstractStandardExpressionAttributeTagProcessor.doProcess(AbstractStandardExpressionAttributeTagProcessor.java:125) ~[thymeleaf-3.0.11.RELEASE.jar:3.0.11.RELEASE]
at org.thymeleaf.processor.element.AbstractAttributeTagProcessor.doProcess(AbstractAttributeTagProcessor.java:74) ~[thymeleaf-3.0.11.RELEASE.jar:3.0.11.RELEASE]
at org.thymeleaf.processor.element.AbstractElementTagProcessor.process(AbstractElementTagProcessor.java:95) ~[thymeleaf-3.0.11.RELEASE.jar:3.0.11.RELEASE]
at org.thymeleaf.util.ProcessorConfigurationUtils$ElementTagProcessorWrapper.process(ProcessorConfigurationUtils.java:633) ~[thymeleaf-3.0.11.RELEASE.jar:3.0.11.RELEASE]
at org.thymeleaf.engine.ProcessorTemplateHandler.handleOpenElement(ProcessorTemplateHandler.java:1314) ~[thymeleaf-3.0.11.RELEASE.jar:3.0.11.RELEASE]
at org.thymeleaf.engine.OpenElementTag.beHandled(OpenElementTag.java:205) ~[thymeleaf-3.0.11.RELEASE.jar:3.0.11.RELEASE]
at org.thymeleaf.engine.Model.process(Model.java:282) ~[thymeleaf-3.0.11.RELEASE.jar:3.0.11.RELEASE]
at org.thymeleaf.engine.ProcessorTemplateHandler.handleOpenElement(ProcessorTemplateHandler.java:1587) ~[thymeleaf-3.0.11.RELEASE.jar:3.0.11.RELEASE]
at org.thymeleaf.engine.TemplateHandlerAdapterMarkupHandler.handleOpenElementEnd(TemplateHandlerAdapterMarkupHandler.java:304) ~[thymeleaf-3.0.11.RELEASE.jar:3.0.11.RELEASE]
at org.thymeleaf.templateparser.markup.InlinedOutputExpressionMarkupHandler$InlineMarkupAdapterPreProcessorHandler.handleOpenElementEnd(InlinedOutputExpressionMarkupHandler.java:278) ~[thymeleaf-3.0.11.RELEASE.jar:3.0.11.RELEASE]
at org.thymeleaf.standard.inline.OutputExpressionInlinePreProcessorHandler.handleOpenElementEnd(OutputExpressionInlinePreProcessorHandler.java
答案 0 :(得分：0)
modelo.addAttribute("editMode",true); //maybe like it
<form class"form" role="form" autocomplete="off" th:object="${userForm}" th:action="${signup} ? '/signup' : (${editMode} ? '/editUser' : '/userForm')" method="post" >