Java Passing array via jquery

Question

i have action below

 @RequestMapping(value = "info_pure", method = RequestMethod.GET)
    public ModelAndView GetInfo(String ser_name, String[] p_input_week_days, int p_input_month_day) {
        ModelAndView mav = new ModelAndView(JspView.PureInfoAup);       
        String aaa = request.getParameter("p_input_week_days");

i send get request to this action via jquery ajax.

 var myarray = ['Element 1', 'Element 2', 'Element 3'];

        var dataobject = {
            ser_name: p_ser_name.trim(), p_input_week_days: myarray, p_input_month_day: p_month_day
        };

        $.ajax({
            url: '../info_pure',
            data: dataobject,
            type: 'GET',
            success: function(data) { /// go forward

but when request send it give me an error. it says that my array parameter is null

here is my result on firebug

enter image description here

Oleksandr Horobets · Accepted Answer · 2014-01-18 09:38:49Z

1

Use Spring MVC @RequestParam annotation.

@RequestMapping(value = "info_pure", method = RequestMethod.GET)
public ModelAndView GetInfo(@RequestParam("p_input_week_days[]") String[] days) {   
    String[] aaa = days;

More details: http://docs.spring.io/spring/docs/4.0.0.RC1/spring-framework-reference/html/mvc.html#mvc-ann-requestparam

answered Jan 18, 2014 at 9:38

Oleksandr Horobets

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3 Comments

Oomph Fortuity Over a year ago

add Jackson-Core and Jackson-mapper jars or dependencies in your project to have this functionality

AEMLoviji Over a year ago

yes it works after changing @RequestParam("p_input_week_days") to @RequestParam("p_input_week_days[]") ))

Oleksandr Horobets Over a year ago

No need to add Jackson to classpath. This code does not use JSON conversion.

SSB · Accepted Answer · 2014-01-18 09:45:20Z

0

I had solved this problem using Google Gson library.

Update your controller method like this

 @RequestMapping(value = "info_pure", method = RequestMethod.GET)
    public ModelAndView GetInfo(String ser_name, String p_input_week_days, int p_input_month_day) {

      Gson gson=new Gson();
      String[] weeks=gson.fromJson(p_input_week_days, String[].class);
      // ....

Update your Ajax call like this

    var myarray = ['Element 1', 'Element 2', 'Element 3'];

    var dataobject = {
        ser_name: p_ser_name.trim(), p_input_week_days: JSON.stringify(myarray), p_input_month_day: p_month_day
    };

    $.ajax({
        url: '../info_pure',
        data: dataobject,
        type: 'GET',
        success: function(data) { /// go forward

answered Jan 18, 2014 at 9:45

SSB

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2 Comments

Oomph Fortuity Over a year ago

No necessity to USE Gson

AEMLoviji Over a year ago

i do not want to use another library. i worked asp.net mvc for a years. there was it simpler. But @shoorick code works after changing @RequestParam("p_input_week_days") to @RequestParam("p_input_week_days[])

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