CODEWITHSUNDEEP
javajsonspringspring-mvc
McQueen
McQueen

Reputation: 490

Sending list in JSON request

I am sending few 'fields' and 'lists' in JSON to Spring MVC Controller as below:

    var data = {
        'message' : 'Text data',
        '**listOfIds**' : '350234983, 378350950',

        'synchronizerToken' : formTokenId

};

$.ajax({
        url : 'testURL.do',
        type : 'post',
        data : data,
        cache : false,
        dataType : 'json',

        success : function (jsonResponse) {},

        error : function (error) {}
});

In Spring MVC controller the URL handler looks like this:

    @RequestMapping(value = "/testURL.do", method = RequestMethod.POST)
public ModelAndView executeTest( ListData listData) {
        ModelAndView    modelAndView    = null;
        JsonResponse    jsonResponse    = null;

        modelAndView    = executeTransaction(listData);
        } 

        return modelAndView;
    }


ListData.java

public class ListData{
    private String          message;
    private List<String>    **listOfIds** = new ArrayList<String>();   

//getter/setters

The issue is listOfIds is not being returned as list. It is returned as single string '350234983, 378350950'

Can anyone suggest if anything is wrong here or is there any better way to receive list in JSON response?

Thanks, -Fonda

Upvotes: 5

Views: 47602

Answers (2)

NaveenKumar1410
NaveenKumar1410

Reputation: 1613

1.)

Add gson jar 

import com.google.gson.Gson;//import

Gson gson = new Gson();//create instance

gson.toJson(ListData);//convert it to json

2.)

Define below bean return jsonView from the controller.

<bean name="jsonView" class="org.springframework.web.servlet.view.json.JsonView"/>

Controller

import org.springframework.ui.ModelMap;

@RequestMapping(value = "/testURL.do", method = RequestMethod.POST)
public String executeTest(ModelMap model, ListData listData) {
    ModelAndView    modelAndView    = null;
    JsonResponse    jsonResponse    = null;
    modelAndView    = executeTransaction(listData);
    model.addAttribute("paramName", modelAndView);
    } 

    return "jsonView";
}

Change in ajax

$.ajax({
    url : 'testURL.do',
    type : 'post',
    data : data,
    cache : false,
    dataType : 'json',

    success : function (jsonResponse) {
       var jsonValue = $.parseJSON(jsonResponse.paramName);
    },

    error : function (error) {}
});

viewsResolver config in mvc-servlet.xml

<bean class="org.springframework.web.servlet.view.XmlViewResolver">
   <property name="location">
       <value>/path/views.xml</value>
   </property>
</bean>

Upvotes: 0

Brad M
Brad M

Reputation: 7898

Make listOfIds an array of strings instead of a single string.

'listOfIds' : ['350234983', '378350950'],

Upvotes: 7

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