I have a controller in Spring Boot that needs to recieve a parameter and an object by POST. The parameter is NOT an object or part of if.
Here is the Thymeleaf form without the parameter. It works fine in a stand-alone page, but the same code does not work when I use it in a page that shows an article:
<form th:action="#{/addcomment}" th:object="${comment}" method="post">
<input type="text" th:field="*{commenttext}" />
<button type="submit">send</button>
</form>
because when I add the
<input type="hidden" th:field="*{id}" th:with="id=1" value="${id}"/>
or
<input type="hidden" th:field="*{id}"/>
or
<input type="hidden" th:field="*{id}" value="1"/>
my Controller prints 0 in the console, when the value should be 1... (and even if I change it to value="true".... this comes from the Chrome console:
<input type="hidden" class="sr-only" value="0" id="id" name="id" />
no matter what I use
#RequestMapping(value = "/addcomment", method = RequestMethod.POST)
ModelAndView addStatus(ModelAndView modelAndView, #Valid Comment comment, #RequestParam("id") Long id, BindingResult result) {
Comment commentform = new Comment();
Announcement announcement = announcementService.readAnnouncement(id);
String sanatizedcommenttext = htmlPolicy.sanitize(comment.getCommenttext());
commentform.setCommenttext(sanatizedcommenttext);
commentform.setDate(new Date());
commentform.setAnnoucements(announcement);
modelAndView.setViewName("addcomment");
if (!result.hasErrors()) {
commentService.createComment(commentform);
modelAndView.getModel().put("comment2th", new Comment());
modelAndView.setViewName("redirect:/addcomment");
}
return modelAndView;
}
By the way, the parameter is in the url (but I would like to know how to send it to the controller independently of where it is located).
thanks for your help!
You only have to add this changes
<input type="hidden" name="paramName" value="1"/>
In your Controller
#RequestMapping(value = "/addcomment", method = RequestMethod.POST)
ModelAndView addStatus(ModelAndView modelAndView, #Valid Comment comment, #RequestParam("paramName") Long id, BindingResult result) {
The problem was, that you were using the thymeleaf tags for input fields, then Spring thinks the attribute id its inside the object Comment, but it's not your case, so you have to use normal input tag.
Related
i am using .html in mvc app. it's showing app perfectly.inside login.html i have used form with method POST for submission but when i submit form showing error that POST is not supported.but when i change everything with .jsp then it let submit form.
here's the controller
#Controller
public class mainController {
#RequestMapping("/login")
public ModelAndView login(Locale locale , Model m) {
System.out.println("modal");
return new ModelAndView ("login");
}
#RequestMapping(path = "/user" , method=RequestMethod.POST)
public String user(#ModelAttribute("user") User user) {
System.out.println(user);
return "user";
}
}
this is login form
<form action="user" method="post" name="user">
<input type="text" name="username" placeholder="uname"/> <br>
<input type="password" name="password" placeholder="password"/> <br>
<input type="date" name="date" placeholder="date"/> <br>
<button type="submit">Submit</button>
</form>
what can I do to submit form using POST method from .html file.
I have the following content in my HTML which is using Thymeleaf
<form action="#" th:action="#{/shutDown}" th:object="${ddata}" method="post">
<span>Domain</span>
<span th:text="${domain}" th:field="*{domain}">domain</span>
<input type="Submit" value="close" />
</form>
And I have the following in my Controller which is using Sprint Boot
#RequestMapping(value = "/shutDown", method = RequestMethod.POST)
public ModelAndView shutDownPage(ModelAndView modelAndView, Authentication authentication,
#ModelAttribute("ddata") DInputBean dInputBean) {
String domain = dInputBean.getdomain();
return modelAndView;
}
I'm hoping I'd get value of domain from the HTML in the Controller but it's always null. DInputBean has getters and setters for "domain" field.
The th:field attribute can be used on <input>, <select>, or, <textarea>.
A solution you could possibly replacing you second <span> with a hidden input element.
<form action="#" th:action="#{/shutDown}" th:object="${ddata}" method="post">
<span>Domain</span>
<input type="hidden" th:field="*{domain}" th:value="${domain}" />
<input type="Submit" value="close" />
</form>
If you wanted to keep the second div, just place the <input type="hidden"> inside the second <span> and remove the th:field attribute from the second <span>.
Edit:
If you wanted to add the value of domain in a span.
<form action="#" th:action="#{/shutDown}" th:object="${ddata}" method="post">
<span>Domain</span>
<span th:text="${domain}">domain<span>
<input type="hidden" th:field="*{domain}" th:value="${domain}" />
<input type="Submit" value="close" />
</form>
http://www.thymeleaf.org/doc/tutorials/3.0/thymeleafspring.html#inputs
An option is to use a read-only input field:
<input type="text" th:field="*{domain}" th:value="${domain}" readonly="readonly"/>
This both displays the value and sends it on submit.
The key is to add the value of the domain variable to the form:
#GetMapping("/shutDownPage")
public String shutDownPage(Model model) {
model.addAttribute("ddata" new Ddata()); //or however you create your bean
String username = ... //however you get your username
String domain = myRepositoryService.findDomainByUsername(username);
model.addAttribute("domain", domain);
return "shutDownPage";
}
Include an HTML page in the action so that when you open the HTML page in a browser without a server/container, the button will still appear to work:
<form action="confirmationPage.html" th:action="#{/shutDown}" th:object="${ddata}" method="post">
<!-- You can benefit from using a conditional expression -->
<span th:text="${domain != null ? domain : 'No domain supplied'}">[domain]</span>
<input type="hidden" th:field="*{domain}" th:value="${domain}"/>
<input type="Submit" value="close"/>
</form>
And your post method:
#PostMapping("/shutDown") //use shorthand
public String shutDownPagePost(#ModelAttribute("ddata") DInputBean dInputBean {
String domain = dInputBean.getDomain();
//do whatever with it
return "confirmationPage";
}
I am trying to get form values from jsp to controller in spring mvc, but i am not able to get form data.
This is my DTO (bean)
public class LoginDTO implements Serializable {
private Long id;
private String username;
private String password;
// setter and getter methods
}
and my Jsp
<form class="form-signin" action="test" method="get" modelAttribute="userFormData">
<input type="text" class="form-control"
placeholder="Email" required autofocus>
<input type="password" class="form-control"
placeholder="Password" required>
<input class="btn btn-md btn-success btn-block"
type="submit" value="Signin">
</form>
and my controller
#RequestMapping(value = "/test", method = RequestMethod.GET)
public String checkLogin(#ModelAttribute("userFormData") LoginDTO formData, BindingResult
result) {
System.out.println("Controller...");
System.out.println("=====> " + formData.getUsername());
System.out.println("=====> " + formData.getPassword());
}
Add names to the controls on your JSP pages.
<input type="text" name="username" ...>
<input type="password" name="password" ...>
To let spring understand which form control value should go to which property of the LoginDTO
we can also use the springframework has given us a form tags.so that we can also use that but in that case you have to define your the input path same as the member varibale given in your class.
like this
<form:form method="post" modelAttribute="userFormData">
<form:input path="username" />
<form:input path="password" />
Then in the controller you can write like this as you have written
public String checkLogin(#ModelAttribute("userFormData") LoginDTO formData, BindingResult
result)
In case you want to get the result on other jsp page as well as on console then do:
public String checkLogin(#ModelAttribute("userFormData") LoginDTO formData, BindingResult
result , Model model){
System.out.println("=====> " + formData.getUsername()); //this outputs username on console
System.out.println("=====> " + formData.getPassword()); //this outputs password on console
model.addAttribute("LoginDTO ", LoginDTO );
return "success"; //this is the return page where the username and password will be rendered as view
}
i am working in this spring-boot project and i am returning a ModelAndView object from my controller method , i have added 2 objects to the ModelAndView. this part is working and i want to know how to represent the values inside the thymeleaf template.
public ModelAndView showEdit(#PathVariable int id,Customer cust,Model model){
ModelAndView view = new ModelAndView();
view.setViewName("editCustom");
view.addObject("cust",cust);
view.addObject("log",login);
}
inside the thymeleaf template.
<form action="#" th:action="#{/save}" th:object="${cust}" method="post">
Name:<input type="text" th:field="*{name}" />
i can fetch values in cust but i dont know how to get values from login.
i tried this but its not working.note that all input tags are inside the same form.
<input type="text" id="user" name="user" value="${login.uname}"/>
In your model you are adding login details as log and in your view your are using login
view.addObject("log",login);
versus
${login.uname}
Also thymeleaf uses an attribute processor which process attributes prefixed with th. Instead of using value use th:value as follows
<input type="text" id="user" name="user" th:value="${log.uname}"/>
Everyone.
I am using spring mvc framework, and spring form tag. I found unexpected thing when using form dynamically. For example,
public class Person {
public List<Car> myCars = new ArrayList<Car>();
// getter and setter
}
below code is html form
<form:form modelAttribute="car" ...>
<input type="hidden" name="myCars[0].id">
<input type="text" name="myCars[0].name">
<input type="hidden" name="myCars[1].id">
<input type="text" name="myCars[1].name">
<input type="hidden" name="myCars[2].id">
<input type="text" name="myCars[2].name">
</form:form>
and next code is a spring form controller
#Controller
#SessionAttribute({"car"})
public class CarController {
...
#RequestMapping(".....")
public String form(#ModelAttribute Car car, BindingResult result, ...) {
if (result.hasErrors()) {
....
return viewName;
}
....
return "redirect:/" + someWhere;
}
}
1) I entered data into html form.
2) I can confirm that there are 3 Car objects in car.getMyCars()
3) There are some errors as binding, so it's redirected to viewName
4) I changed html form using jQuery like this
<form:form modelAttribute="car" ...>
<input type="hidden" name="myCars[0].id">
<input type="text" name="myCars[0].name">
<input type="hidden" name="myCars[1].id">
<input type="text" name="myCars[1].name">
</form:form>
and, submit. The result of this test is that #ModelAttribue Car car still remains 3rd element in List myCars. I expected to remain 2 Car elements, but it wasn't. I think it remained in session. And it was overwritten new form data to #ModelAttribute Car car object, but last 3rd element wasn't. My test shows that if form elements increase dynamically, binding object using #ModelAttribute have them. But though decreased dynamically, binding object still have them. I hope that Car car object have accurate number of form inputs. What should I do?
Thanks in advance.