Spring 4 - HTTP Status 400, no required parameter
I have a Spring form in index.jsp :
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<html>
<body>
<form:form action="save" name="employeeDTO" method="POST">
<label for="name">Name</label><input id="name" type="text" required><br>
<label for="surname">Surname</label><input id="surname" type="text" required><br>
<label for="email">E-mail</label><input id="email" type="email" required><br>
<label for="salary">Salary</label><input id="salary" type="number" required><br>
<input type="submit" value="Save">
</form:form>
</body>
</html>
In WorkController.java I am trying to render a submit form (it does nothing with the data at the moment):
@Controller
public class WorkController {
@RequestMapping(value = "/save", method = RequestMethod.POST)
public String save(@RequestParam EmployeeDTO employeeDTO){
return "saved";
}
}
But I got HTTP 400 Status: Required EmployeeDTO parameter 'employeeDTO' is not present
with description:The request sent by the client was syntactically incorrect.
There is EmployeeDTO.java :
public class EmployeeDTO implements Serializable, DTO {
private Long id;
private String name;
private String surname;
private String email;
private Double salary;
public EmployeeDTO(){}
public EmployeeDTO(Long id, String name, String surname, String email, Double salary){
this.id = id;
this.name = name;
this.surname = surname;
this.email = email;
this.salary = salary;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSurname() {
return surname;
}
public void setSurname(String surname) {
this.surname = surname;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public Double getSalary() {
return salary;
}
public void setSalary(Double salary) {
this.salary = salary;
}
@Override
public Serializable toEntity() {
return new Employee(getId(), getName(), getSurname(), getEmail(), getSalary());
}
}
If I remove @RequestParam EmployeeDTO employeeDTO
from the save
method signature - it works, it gets redirected to a file saved.jsp
. I used @RequestParam String name, @RequestParam String surname etc
to use HTML to collect data from forms. Is there any solution to "grab" data from a Spring form as a DTO object? I'll be happy if Anbeid decides to help me - thanks in advance.
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You can try @ModelAttribute
(Visit the ModelAttribute Question on SO for a clear understanding of this)
@RequestMapping(value = "/save", method = RequestMethod.POST)
public String save(@ModelAttribute("employeeDTO") EmployeeDTO employeeDTO){
return "saved";
}
I used this in spring mvc 3.1
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As mentioned in previous answers, @ModelAttirube is part of your fix, but in order for the values to actually bind to the model attribute, you will need to add name attributes in your form, for example
<form:form action="save" name="employeeDTO" method="POST">
<label for="name">Name</label><input id="name" name="name" type="text" required><br>
<label for="surname">Surname</label><input id="surname" name="surname" type="text" required><br>
<label for="email">E-mail</label><input id="email" type="email" name="email" required><br>
<label for="salary">Salary</label><input id="salary" type="number" name="salary" required><br>
<input type="submit" value="Save">
</form:form>
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Use @ModelAttribute to bind DTO (in Spring form) to controller method parameter.
http://docs.spring.io/spring/docs/3.0.x/spring-framework-reference/html/mvc.html#mvc-ann-modelattrib
Hope it helped.
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