Method to pass Array object array in JS to the background in JSON format

Method to pass Array object array in JS to the background in JSON format_javascript skills

WBOY

Release： 2016-05-16 17:05:18

Original

1084 people have browsed it

The business needs to transfer the data of several selected rows in the front-end jQuery easyUI DataGrid list to the background for update operation
Method to pass Array object array in JS to the background in JSON format_javascript skills

Normally we will get the ID of the selected row object through a loop And simply encapsulate it into a long String and send it to the service layer, and then use findByID to get the instance and update

But this time we need to completely transmit the entire object group to the background

The structure is as follows
Method to pass Array object array in JS to the background in JSON format_javascript skills

Use Google's GSON plug-in and json2.js together

The front-end code is as follows, some simple verification codes have been removed for the sake of simplicity:

Copy code The code is as follows:

 
var rows = $('#dg1').datagrid('getSelections'); 
$.ajax({ 
cache : false, 
type : "POST", 
url : _basePath '/sectionGroup/pair', 
data : {rows : JSON.stringify(rows ), group_id : group_id, group_name : group_name}, 
success : function(data) { 
if(data.success == true){ 
$.messager.confirm('Configuration successful','whether Refresh the list? ', function(r){ 
if (r){ 
$('#dg').datagrid('reload'); 
$('#dg1').datagrid(' reload'); 
$('#dg2').datagrid('reload'); 
} 
}); 
}else{ 
$.messager.show({ 
title:'Prompt',msg:'Configuration failed', 
showType:'fade',style:{right:'',bottom:''} 
}); 
} 
} 
}); 

This page needs to introduce json2.js

The background Controller receives the following:

Copy the code The code is as follows:

 
@RequestMapping(value = "/pair") 
@ResponseBody 
public ResponseData pair(String rows, String group_name , String group_id, HttpServletRequest request) { 
User user = (User) SecurityContextUtil.getCurrentUser(); 
if (user == null) { 
user = (User) request.getSession().getAttribute( Constants.USER_OS); 
} 
Gson gson = new Gson(); 
List list = gson.fromJson(rows, new TypeToken>() {}.getType ()); 
for (SectionGroup sectionGroup : list) { 
sectionGroup.setRegion(user.getRegion_id()); 
sectionGroup.setCompany_id(user.getOrg_id()); 
sectionGroup.setGroup_id( group_id); 
sectionGroup.setGroup_name(group_name); 
service.insertEntity(sectionGroup); 
} 
return ResponseData.SUCCESS_NO_DATA; 
} 

where GSON And TypeToken is a class introduced in the GSON package

The input parameter rows should be of String type

After Gson conversion, the List is still a normal interface, and the complete Object object at the front end is loaded internally.