3

I have a login form with two values name and password. I pass this value as in my rest service. I get this value in my rest service using FormParam annotation. But, my requirement is to get that values as a class. I tried below methodology. But it's not work and shows the compile time error: @Form cannot be resolved to a type.

@POST
@Path("login")
@Produces(MediaType.TEXT_PLAIN)
public String login(@Form User form) {
     return "Logged with " + form.email + " " + form.password;
}

public class User {

      @FormParam("email")
      private String email;

      @FormParam("password")
      private String password;

}

My form is

<form method="POST" action="rest/login">


Email Address: <input type="text" name="email">
<br>
Password: <input type="text" name="password">
<input type="submit">


</form>

How to receive form value as object?

Roman C
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Selva
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  • Try `@BeanParam` instead of `@Form` and your `@FormParam` annotations on the `User` class should work just fine. [Documentation](https://jersey.java.net/documentation/latest/jaxrs-resources.html). I haven't got the time to test it right now. Let me know if it works for you. If it does, I'll post this as an answer. – toniedzwiedz Oct 03 '14 at 07:05
  • @Tom,compile error:BeanParam cannot be resolved to a type – Selva Oct 03 '14 at 07:07
  • Which JAX-RS implementation are you using? Also, what version is it? – toniedzwiedz Oct 03 '14 at 07:08
  • Ok, I don't think this annotation is available in a version this early. I'm afraid you'll have to extract these parameters separately and explicitly construct a `User` object. Or maybe switching to a newer version of Jersey is an option? – toniedzwiedz Oct 03 '14 at 07:19
  • You can also try the method described [on this blog](http://avianey.blogspot.com/2011/12/exception-mapping-jersey.html), see the _Contextual object injection_ section. – toniedzwiedz Oct 03 '14 at 07:24
  • have u tried request param ? – Kishan Bheemajiyani Oct 09 '14 at 10:58

2 Answers2

1

You need to use @RequestParam even if it is a composite Java object. So change this

 public String login(@Form User form)

to

 public String login(@RequestParam("form") User form)

You just need to send user details under "form" param from client.

Juned Ahsan
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0

If your requirement is only to have the data in the form of an object, you can call your ReST service by passing a JSON request:

ReST method 

@POST
@Consumes(MediaType.APPLICATION_JSON)
public String login(User form) {
// access values from inputObject
form.getEmail();
form.getPassword();
}

User class

import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement
public class User {

      private String email;
      private String password;

      //getters and setters

    }

You need to use Jackson feature for overcoming MessageBody related error. If you are using Jackson version 2.x BELOW, you'll need to register Jackson feature in your web.xml file. 

<init-param>
    <param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
    <param-value>true</param-value>
</init-param>

In case of Jackson version 2.x and above, only add Jackson 2.x jars. The above mentioned snippet won't be required in web.xml

Pramod Karandikar
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