Ajax call param with @modelAttribute in Spring

Question

I'm using ajax call to submit a form. But I'm not able to access the parameter as a modelattribute.

Ext.Ajax.request({
                url: 'url',
                headers: { 'Content-Type': 'application/json' },
                params : Ext.JSON.encode(form.getValues()), //this is the parameter in jason pattern

                success: function(response, options) {
                    var result = Ext.JSON.decode(response.responseText, true);

                    if (result.success) {

                        Ext.Msg.show({
                            title:'DataBase',
                            msg: result.message,
                            buttons: Ext.Msg.OK,
                            icon: Ext.Msg.INFO
                        });

My doubt is that can i access this parameter as a modelattribute as in the given code below. ?

@RequestMapping(value="/employee/new", method = RequestMethod.POST )
@ResponseBody public String doAddEmp(@RequestBody String Str){
    try{
        empServ.setError();
        if(empServ.addEmp(Str)){
            return "{success:true, message:'Insertion Successfull'}";
        }else
            return "{success:false, message:\""+empServ.returnError()+"\"}";

    }
    catch(Exception e){
        e.printStackTrace();
        return "{success:false, message:'SQL ERROR'}";

    }

}

I would be very thankful to hear a good suggestion for my doubt. If this is a wrong pattern(for the parameter) please suggest me the right pattern.

selvinsource · Accepted Answer · 2016-01-11 10:12:48Z

1

You are confusing @ModelAttribute with @RequestBody: you are saying you want to access the modelattribute but you are instead using the requestbody (both are binding data mechanisms, one from the params the other from the body).

With Ajax requests it is better to use @RequestBody as you did in your code.

Make sure:

Ext.Ajax.request has "method: 'POST'"
Your controller is annotated with @RestController
Change "@RequestBody String Str" to "@RequestBody Employee employee"
Ensure your form elements names match the employee object fields

edited Jan 11, 2016 at 10:12

answered Jan 11, 2016 at 10:07

selvinsource

1,8372 gold badges17 silver badges20 bronze badges

Sign up to request clarification or add additional context in comments.

6 Comments

selvinsource Over a year ago

Technically @RequestBody String Str should also work, but as you asked for the right pattern, for a REST api it is common to let Spring do the mapping between the json object posted and the model (Employee in your case). So that you can call the empServ.addEmp(employee). Also make sure "url: '/employee/new'".

Sreekanth Over a year ago

Sir i have one more doubt @RequestMapping(value="/employee/new", method = RequestMethod.POST ) @ResponseBody public String doAddEmp(@ModelAttribute Employee employee){ empServ.addEmp(Employee); } How to send the param from ajax request for this function.?

selvinsource Over a year ago

For that (@ModelAttribute) you should simply submit the form. If you want ot use Ajax better to use @RequestBody as you did before. Here some links to look at alvinalexander.com/javascript/… and techzoo.org/javascript-tutorial/extjs/…. In this latter example, the data is posted with jsonData: book.

selvinsource Over a year ago

Also, I would add a break point in java on the spring controller to see if it reaches it. It may be an issue with your mapping and not your code.

Sreekanth Over a year ago

Thank you sir.! I could do it with the @RequestBody annotation. It was a problem with the Date formatting. String can't be mapped to date format.

|

Collectives™ on Stack Overflow

Ajax call param with @modelAttribute in Spring

1 Answer 1

6 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

6 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related