Reviewing a jQuery Ajax form POST and Spring MVC example, find out the following patterns :
<script>
jQuery(document).ready(
function($) {
$("#btn-save").click(function(event) {
var id = $('#id').val();
var domain = $('#domain').val();
var name = $('#name').val();
var desc = $('#desc').val();
var tags = $('#tags').val();
var afflink = $('#afflink').val();
var cdn = $("#cdn").prop("checked") ? true : false;
var hosting = $("#hosting").prop("checked") ? true : false;
var paas = $("#paas").prop("checked") ? true : false;
var display = $("#display").prop("checked") ? true : false;
var imageUrl = $('#imageUrl').val();
var favUrl = $('#favUrl').val();
var whoisPattern = $('#whoisPattern').val();
$("#btn-save").prop("disabled", true);
$.post("/path-to/hosting/save", {
id : id,
domain : domain,
name : name,
desc : desc,
tags : tags,
afflink : afflink,
display : display,
hosting : hosting,
cdn : cdn,
paas : paas,
imageUrl : imageUrl,
favUrl : favUrl,
whoisPattern : whoisPattern
}, function(data) {
var json = JSON.parse(data);
//...
}).done(function() {
}).fail(function(xhr, textStatus, errorThrown) {
}).complete(function() {
$("#btn-save").prop("disabled", false);
});
});
});
</script>
In Spring MVC, use @RequestParam to accept the Ajax POST data.
@RequestMapping(value = "/path-to/hosting/save", method = RequestMethod.POST)
@ResponseBody
public String saveHosting(
@RequestParam int id, @RequestParam String domain, @RequestParam String name,
@RequestParam String desc, @RequestParam String tags, @RequestParam String afflink,
@RequestParam boolean display, @RequestParam boolean hosting,
@RequestParam boolean cdn, @RequestParam boolean paas,
@RequestParam String imageUrl, @RequestParam String favUrl,
@RequestParam String whoisPattern
) {
//...do something
}
The above code is working fine, just a bit weird and hard to maintain. Both Javascript $.post and Spring MVC @RequestParam is dealing with too many parameters.
1. Refactoring JavaScript
In Javascript, I prefer to use $.ajax, store everything into an array and POST it to Spring MVC.
<script>
jQuery(document).ready(
function($) {
$("#btn-save").click(function(event) {
var data = {}
data["id"] = $("#id").val();
data["domain"] = $("#domain").val();
data["name"] = $("#name").val();
data["desc"] = $("#desc").val();
data["tags"] = $("#tags").val();
data["afflink"] = $("#afflink").val();
data["cdn"] = $("#cdn").prop("checked") ? true : false;
data["hosting"] = $("#hosting").prop("checked") ? true : false;
data["paas"] = $("#paas").prop("checked") ? true : false;
data["display"] = $("#display").prop("checked") ? true : false;
data["imageUrl"] = $("#imageUrl").val();
data["favUrl"] = $("#favUrl").val();
data["whoisPattern"] = $("#whoisPattern").val();
$("#btn-save").prop("disabled", true);
$.ajax({
type: "POST",
contentType: "application/json",
url: "/path-to/hosting/save",
data: JSON.stringify(data),
dataType: 'json',
timeout: 600000,
success: function (data) {
$("#btn-update").prop("disabled", false);
//...
},
error: function (e) {
$("#btn-save").prop("disabled", false);
//...
}
});
});
});
</script>
2. Refactoring Spring MVC
2.1 Create a POJO to store the Ajax POST data.
public class HostingForm {
private boolean display;
private boolean cdn;
private boolean hosting;
private boolean paas;
private String whoisPattern;
private long id;
private String domain;
private String name;
private String desc;
private String tags;
private String affLink;
private String imageUrl;
private String favUrl;
//getters and setters
2.2 Accept the Ajax POST data with @RequestBody
@RestController
//...
@RequestMapping(value = "/path-to/hosting/save", method = RequestMethod.POST)
public String updateHosting(@RequestBody HostingForm hostingForm) {
//...
}
With @RequestBody, Spring will maps the POST data to HostingForm POJO (by name) automatically. Done.
Note
You mat interest at this tutorial – Complete Spring 4 MVC + Ajax Form Post example
You mat interest at this tutorial – Complete Spring 4 MVC + Ajax Form Post example
i sending formdata to controller class. in controller how to access these data?
$(“button#submitMDRtable”).click(function(){
var data = [];
var minAmt, maxAmt, type, minCap, maxCap;
$(“table tbody tr”).each(function(index) {
minAmt = $(this).find(‘.minAmt’).text();
maxAmt = $(this).find(‘.maxAmt’).text();
type = $(this).find(‘.type’).text();
minCap = $(this).find(‘.minCap’).text();
maxCap = $(this).find(‘.maxCap’).text();
//alert(minAmt+”–“+maxAmt+”–“+type+”–“+minCap+”–“+maxCap)
//—->Form validation goes here
data.push({
minAmt: minAmt,
maxAmt: maxAmt,
type: type,
minCap: minCap,
maxCap: maxCap
});
});
submitFormData(data);
console.log(data);
});
function submitFormData(formData) {
var url= ‘/mdrcharges’;
alert(url);
$.ajax({
type: ‘POST’,
data: formData,
cache: false,
processData: false,
contentType: false,
beforeSend: beforeSendHandler,
url: url,
success: function(result){
if(result.success == true) {
$(‘.alert-success’).show();
$(‘.alert-danger’).hide();
$(“#successmsg”).html(result.msg);
setTimeout(function() {
$(“.alert-success”).alert(‘close’);
}, 10000);
} else {
$(‘.alert-danger’).show();
$(‘.alert-success’).hide();
$(“#error”).html(result.msg);
setTimeout(function() {
$(“.alert-danger”).alert(‘close’);
}, 10000);
}
}
});
}
OK. This is an easy example, and everyone saw it a hundred times. But tell us what do you will do if you have here is a JSON:
{“abc”:
{“sr”:”ok”,”citi”:[
{“id”:”c2″,”value”:”london”},{…}…,{…}]}}
etc ?
Just send a POST request, along with your JSON data.