i have following scenario :
#ModelAttribute("persons")
public void addAttributes(Model model) {
Person person = new Person()
;
person.setAge(26);
person.setFirstName("mars");
model.addAttribute("persons", person);
}
#RequestMapping(value="/process-person")
public ModelAndView processPerson(#ModelAttribute Person person,#ModelAttribute ("persons")Person persons,ModelAndView modelAndView ) {
//
//ModelAndView modelAndView = new ModelAndView();
modelAndView.setViewName("person-result-page");
modelAndView.getModel().remove("personObj");
modelAndView.addObject("pers", person);
----> modelAndView.addObject("pers2", persons);// persons holds the myname1 provided in input box
modelAndView.addObject("personObj", person);
return modelAndView;
}
As shown in the --> i want this variable -persons to hold the value obtained from addAttributes() method but it is taking the same values that i input from the jsp page :
<form:form method="POST" commandName="person-entity" action="process-person.html">
<table>
<tr>
<td><form:label path="firstName">Name:</form:label></td>
<td><form:input path="firstName" /></td>
</tr>
<tr>
<td><form:label path="age">Age:</form:label></td>
<td><form:input path="age" /></td>
</tr>
<tr>
<td colspan="2">
<input type="submit" value="Submit"/>
</td>
<td></td>
<td></td>
</tr>
</table>
</form:form>
<br/>
i saw few similar questions but none of them resolved this problem . Here i want values from addAttribute method to placed inside "persons" object, but it is taking the same value as that of "person" being provided from the form.jsp.
please help me out
Related
I tried all the solutions but I keep getting this error. Moreover if i don't use form:form in jsp file and use a simple HTML, I get the desired output.
Controller Class
#Controller
public class controller_class {
/*
* #RequestMapping(path = "/index", method = RequestMethod.GET) public
* ModelAndView mar() { return new ModelAndView("index","command",new marks());
* }
*/
#RequestMapping("/index")
public ModelAndView showComments() {
return new ModelAndView("marks","command",new marks());
}
#RequestMapping(value = "/addMarks", method = RequestMethod.POST)
public ModelAndView stud(#ModelAttribute("marks") marks m) {
ModelAndView mv = new ModelAndView("result");
int k = m.calculate();
mv.addObject("tot_marks", k);
return mv;
}
}
index.jsp
<form:form method = "POST" modelAttribute="marks" action = "/springmvc_qa3/addMarks">
<table>
<tr>
<td><form:label path = "sci_marks">Name</form:label></td>
<td><form:input path = "sci_marks" /></td>
</tr>
<tr>
<td><form:label path = "maths_marks">Age</form:label></td>
<td><form:input path = "maths_marks" /></td>
</tr>
<tr>
<td><form:label path = "eng_marks">id</form:label></td>
<td><form:input path = "eng_marks" /></td>
</tr>
<tr>
<td colspan = "2">
<input type = "submit" value = "Submit"/>
</td>
</tr>
</table>
</form:form>
</body>
Correct Output if I use this instead
<form method="POST" action="/springmvc_qa3/addMarks" >
<table>
<tr>
<td><label >Science Marks</label></td>
<td><input type="text" name="sci_marks" /></td>
</tr>
<tr>
<td><label >Mathematics Marks</label></td>
<td><input type="text" name="maths_marks" /></td>
</tr>
<tr>
<td><label >English Marks</label></td>
<td><input type="text" name="eng_marks" /></td>
</tr>
<tr>
<td colspan="2">
<input type="submit" value="Submit" />
</td>
</tr>
</table>
</form>
What is the reason that I can't get the right output using the first method?
add the following to your controller class:
#ModelAttribute("marks")
public Marks nameOfMethodDoesntMatter(){
return new Marks();
}
make sure your Marks class has getters, setters and default constructor.
consider calling your class MarksDTO or something similar to convey its meaning better (DTO = data transfer object).
i am trying to make simple spring mvc application, using jdbctemplate,but when i try to open registration page i got this error- java.lang.IllegalArgumentException: Attribute 'items' must be an array, a Collection or a Map.
last time i used this thing in another applicaton, it worked fine,but this time it is not working :(
here is my controller code and register.jsp
#RequestMapping("/register")
public ModelAndView registerEmployee(#ModelAttribute Employee employee) {
List<String> cityList = new ArrayList<String>();
cityList.add("kashipur");
cityList.add("moradabad");
cityList.add("delhi");
cityList.add("noida");
List<String> genderList = new ArrayList<String>();
genderList.add("male");
genderList.add("female");
Map<String,List<String>> map = new HashMap<String,List<String>>();
map.put("cityList",cityList);
map.put("genderList",genderList);
return new ModelAndView("register","map",map);
}
register.jsp is
<div>
<form:form method="post" action="/insert" modelAttribute="employee">
<table>
<tr>
<td>Name :</td>
<td><form:input path="name" /></td>
</tr>
<tr>
<td>Gender :</td>
<td><form:radiobuttons path="gender" items="${map.genderList}" /></td>
</tr>
<tr>
<td>City :</td>
<td><form:select path="city" items="${map.cityList}" /></td>
<tr>
<tr>
<td>Email :</td>
<td><form:input path="email" /></td>
</tr>
<tr>
<td>Phone :</td>
<td><form:input path="phone" /></td>
</tr>
<tr>
<td><input type="submit" value="Save" /></td>
</tr>
<tr>
<td colspan="2"><a href="getList">Click Here to See User
List</a></td>
</tr>
</table>
</form:form>
</div>
Try to change this List<String> cityList
to this ArrayList<String> cityList
same here
Map<String,List<String>> map = new HashMap<String,List<String>>();
Also try to access map element like this map['cityList']
You don't need to qualify with ${map.
Simply write
return new ModelAndView("register", map);
and in the JSP:
<td><form:radiobuttons path="gender" items="${genderList}" /></td>
and
<td><form:select path="city" items="${cityList}" /></td>
I'm learning Spring MVC with the tutorial of the site here
My question is basically in the code fragment bellow.
#RequestMapping(value = "/addContact", method = RequestMethod.POST)
public String addContact(#ModelAttribute("contact")
Contact contact, BindingResult result) {
System.out.println("First Name:" + contact.getFirstname() +
"Last Name:" + contact.getLastname());
return "redirect:contacts.html";
}
What should the value of #ModelAttribute be when just handling a POST request from a form submit?
Or in other words, what exactly does the "contact" value refers to in this situation?
The posted form is defined as follows:
<form:form method="post" action="addContact.html">
<table>
<tr>
<td><form:label path="firstname">First Name</form:label></td>
<td><form:input path="firstname" /></td>
</tr>
<tr>
<td><form:label path="lastname">Last Name</form:label></td>
<td><form:input path="lastname" /></td>
</tr>
<tr>
<td><form:label path="lastname">Email</form:label></td>
<td><form:input path="email" /></td>
</tr>
<tr>
<td><form:label path="lastname">Telephone</form:label></td>
<td><form:input path="telephone" /></td>
</tr>
<tr>
<td colspan="2">
<input type="submit" value="Add Contact"/>
</td>
</tr>
</table>
</form:form>
I have the Spring form
<form:form method="POST" action="/HelloWeb/addStudent" id="myForm">
<table>
<tr>
<td><form:label path="name">Name</form:label></td>
<td><form:input path="name" /></td>
</tr>
<tr>
<td><form:label path="age">Age</form:label></td>
<td><form:input path="age" /></td>
</tr>
<tr>
<td><form:label path="id">id</form:label></td>
<td><form:input path="id" /></td>
</tr>
<tr>
<td colspan="2">
<input type="submit" value="Submit"/>
</td>
</tr>
</table>
</form:form>
i can submit this form to controller using
$.post('{controller path}', $('#myForm').serialize());
now i want to populate entity object using jquery/Ajax on the this form and object will be returned from controller.
kindly guide me?
here is controller that call new page and populate object data on form...
#RequestMapping(value = "/addStudent", method = RequestMethod.POST)
public ModelAndView addStudent(#ModelAttribute("SpringWeb")Student student, ModelMap model)
{
Student stud =new Student();
//here will be my code to use student object....
return new ModelAndView("ViewStudent", "SpringWeb",stud);
}
but this method load new page ...instead of calling new i want do this logic on same page
The form: tags are interpreted on the server side, and generate regular HTML tags on the client side. Since jQuery is only running on the client side, it won't be able to find things using the form: tags. Try running the page and viewing the HTML source, then base your jQuery selectors on what you see there.
I am working on spring samples.I have a controller class named UserController2 as follows
#Controller
public class UserController2 extends MultiActionController {
private UserDAO userDAO;
public void setUserDAO(UserDAO userDAO) {
this.userDAO = userDAO;
}
#RequestMapping(params = "add", method = RequestMethod.POST)
public ModelAndView add(HttpServletRequest request,
HttpServletResponse response, User user) throws Exception {
userDAO.saveUser(user);
return new ModelAndView("redirect:User.htm");
}
public ModelAndView list(HttpServletRequest request,
HttpServletResponse response) throws Exception {
ModelMap modelMap = new ModelMap();
modelMap.addAttribute("userList", userDAO.listUser());
modelMap.addAttribute("User", new User());
return new ModelAndView("userForm", modelMap);
}
}
and i have a jsp page called userForm.jsp
<form:form method="POST" action="add.htm" commandName="User" modelAttribute="User">
<table>
<tr>
<td><form:label path="name">Name</form:label></td>
<td><form:input path="name" /></td>
</tr>
<tr>
<td><form:label path="id">id</form:label></td>
<td><form:input path="id" /></td>
</tr>
<tr>
<td><form:label path="password">Name</form:label></td>
<td><form:input path="password" /></td>
</tr>
<tr>
<td><form:label path="gender">Name</form:label></td>
<td><form:input path="gender" /></td>
</tr>
<tr>
<td><form:label path="gender">Name</form:label></td>
<td><form:input path="gender" /></td>
</tr>
<tr>
<td><form:label path="country">Name</form:label></td>
<td><form:input path="country" /></td>
</tr>
<tr>
<td colspan="2">
<input type="submit" value="Submit"/>
</td>
</tr>
</table>
</form:form>
what actually does the below codes returns
return new ModelAndView("userForm", modelMap);
and
return new ModelAndView("redirect:User.htm");
I am getting the following error
java.lang.IllegalStateException: Neither BindingResult nor plain target object for
bean name 'User' available as request attribute
I searched but i cannot find a proper explanation for modelandview..
When using the modelAttribute make user that:1. Your method parameter user is annotated with #ModelAttribute("user")2. A method parameter of type BindingResult is declared.
Also, the annotation parameter value is case sensitive, and should exactly match the value of the modelAttribute you declared in userForm.jsp.