How to get JSON response from Spring Controller to JQueryAjax?

Question

How to get json response from Spring Controller to JQueryAjax,
I am trying to get json data from Controller but getting error ststus in JQueryAjax, Have any error in my code this is a simple login application This is my Controller in Spring

HomeController.java

    @RequestMapping(value = "/login.htm", method = RequestMethod.POST)
    public @ResponseBody User loginUser(HttpServletRequest request, HttpServletResponse response, User ub)
    {

        String email = request.getParameter("txt_email");
        String password = request.getParameter("txt_password");

        ub.setEmail(email);
        ub.setPassword(password);

        UserServiceImpl us = new UserServiceImpl();
        User ub1=new User();
        ub1= us.verifyUserLogin(ub);

        return ub1;
    }

This is my JQueryAjax

data.js

    function usersignin(url)
    {
        var val = signin_validate();
        if (val == false)
        {
            return;
        }
        var email = $('#txt_email').val();
        var password = $('#txt_password').val();
        var formData =
        {
                'txt_email' : email,
                'txt_password' : password,

        };
        $.ajax(
                {
                    type : 'POST',
                    url : url,
                    data : formData,
                    dataType: "json",

                    success : function(res, textStatus)
                    {
                        var msg="Succesfully..! Login";
                        showAlertLogin(msg);
                        window.location.href='index.jsp'            

                    },

                    error : function(res, textStatus)
                    {
                        var msg="Failed..! Login";
                        showAlertLogin(msg);
                        window.location.href='layout.jsp'           

                    }
                });

    }

I added dependency file

    <dependency>
        <groupId>org.codehaus.jackson</groupId>
        <artifactId>jackson-mapper-asl</artifactId>
        <version>1.9.7</version>
    </dependency>

    <dependency>
        <groupId>org.codehaus.jackson</groupId>
        <artifactId>jackson-core-asl</artifactId>
        <version>1.9.7</version>
    </dependency>

But i didnt get json response in ajax only getting error why? One error in console is

[http-nio-8080-exec-5] WARN org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver - Handler execution resulted in exception: Could not find acceptable representation

Please try dataType : 'Json' in ajax calling.

Nikhil Gupta
– Nikhil Gupta

2016-05-06 11:25:34 +00:00
Commented May 6, 2016 at 11:25 — Nikhil Gupta
– Nikhil Gupta, Commented May 6, 2016 at 11:25
@NikhilGupta I added but not working

Symon kt2
– Symon kt2

2016-05-06 12:25:58 +00:00
Commented May 6, 2016 at 12:25 — Symon kt2
– Symon kt2, Commented May 6, 2016 at 12:25
@Nikhil I added in my js but not working

Symon kt2
– Symon kt2

2016-05-06 12:26:22 +00:00
Commented May 6, 2016 at 12:26 — Symon kt2
– Symon kt2, Commented May 6, 2016 at 12:26

CrawlingKid · Accepted Answer · 2016-05-06 13:09:32Z

2

Starting with Spring 3.1, a the @RequestMapping annotation now has a produces specifically for this purpose:

@RequestMapping(value = "/login.htm", method = RequestMethod.POST, produces = "application/json")
    public @ResponseBody User loginUser(HttpServletRequest request, HttpServletResponse response, User ub)
    {

        String email = request.getParameter("txt_email");
        String password = request.getParameter("txt_password");

        ub.setEmail(email);
        ub.setPassword(password);

        UserServiceImpl us = new UserServiceImpl();
        User ub1=new User();
        ub1= us.verifyUserLogin(ub);

        return ub1;
    }

Add Dependency:

  <dependency>
        <groupId>org.codehaus.jackson</groupId>
        <artifactId>jackson-core-asl</artifactId>
        <version>1.9.10</version>
    </dependency>

        <!-- Jackson JSON Mapper -->
        <dependency>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-mapper-asl</artifactId>
            <version>1.9.10</version>
        </dependency>

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-core</artifactId>
    <version>2.5.1</version>
</dependency>

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.5.1</version>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-annotations</artifactId>
    <version>2.5.1</version>
</dependency>

References:spring-3-mvc-and-json-example

edited May 6, 2016 at 13:09

answered May 6, 2016 at 11:41

CrawlingKid

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14 Comments

Symon kt2 Over a year ago

Igot error in Jquery and error in console too the error is this one [http-nio-8080-exec-8] WARN org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver - Handler execution resulted in exception: Could not find acceptable representation

CrawlingKid Over a year ago

you have jar dependency problems

Symon kt2 Over a year ago

I mention my dependency in my question.Please help me.Without Json data its work fine?

Symon kt2 Over a year ago

I am using Spring 4.2.2.RELEASE i added entire dependency file

CrawlingKid Over a year ago

have you added <mvc:annotation-driven /> ?

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