5 ajax interaction methods between Spring MVC front-end and back-end

Below I will bring you an article about 5 ajax interaction methods between Spring MVC front-end and back-end. Let me share it with you now and give it as a reference for everyone.

The front-end ajax and the back-end Spring MVC controller have the following five data interaction methods. (dhtmlxGrid is used in the frontend and fastjson is used in the backend)

Method 1: Pass parameters through URL

Hook parameters through URL, such as / auth/getUser?userid='6'

The server-side method can be written as: getUser(String userid), and other parameters can also be added such as HttpSession, HttpServletRequest, HttpServletResponse, Mode, ModelAndView, etc.

Method 2 single-value parameter passing

Foreground call such as:

ajaxPost("/base/user/exchangeSort",{"id":rid,"otherid":otherid},function(data,status){

xxxxxx

xxxxxx

});

The server side is:

public String exchangeSort(String id, String otherid)

Method three object passing parameters

The front desk call is:

var org={id:id};

ajaxPost("/base/org/getOrgById", org,function(data,textStatus){

xxxx

xxxx

});

The server side is:

public Org getOrgById(Org org)

Method 4 Object serialization parameter passing

Foreground call such as:

var ueser={id:rowId};

var data=ajaxPost("/base/user/findById",{"userObj":JSON.stringify(user)},null);

or

var ueser={ };//创建对象

user["id"]=id;

user["name"]=$("#name").val();

user["dept"]={};//外键对象

user["dept"]["id"]=$("#deptid").val();

ajaxPost("/base/user/addUser",{"userObj":JSON.stringify(user)},function(data){xxxx;xxxxx;});

The server side is:

@RequestMapping("/findById")

@ResponseBody

public UserInfo findById(String userObj) {

//使用fastJSON

UserInfo user = JSON.parseObject(userObj, UserInfo.class);

user = (UserInfo) userService.findById(UserInfo.class, user.getId());

return user;

}

Pass parameters in five lists

Front-end code such as:

var objList = new Array();

grid.forEachRow(function(rId) {

var index = grid.getRowIndex(rId);

var obj = {};

obj["id"] = rId;

obj["user"] = {};

obj["user"]["id"] = $("#userId").val();

//不推荐这样的写法

//obj["kinShip"] = grid.cells(rId, 1).getValue();

//obj["name"] = grid.cells(rId, 2).getValue();

obj["kinShip"]=grid.cells(rId,grid. getColIndexById ("columnName")).getValue();

obj["name"]=grid.cells(rId,grid.getColIndexById("name")).getValue();

if(grid.cells(rId, 3).getValue()!=null && grid.cells(rId, 3).getValue()!="") {

var str = grid.cells(rId, 3).getValue().split("-");

var day = parseFloat(str[2]);

var month = parseFloat(str[1])-1;

var year = parseInt(str[0]);

var date=new Date();

date.setFullYear(year, month, day);

obj["birth"] = date;

}else {

obj["birth"] ="";

}

obj["politicalStatus"] = grid.cells(rId, 4).getValue();

obj["workUnit"] = grid.cells(rId, 5).getValue();

if (grid.cells(rId, 6).isChecked())

obj["isContact"] ="1";

else

obj["isContact"] ="0";

obj["phone"] = grid.cells(rId, 7).getValue();

obj["remark"] = grid.cells(rId, 8).getValue();

obj["sort"] = index;

objList.push(obj);

});


ajaxPost("/base/user/addUpdateUserHomeList", {

"userHomeList" : JSON.stringify(objList),

"userId" : $("#userId").val()

},function(data, status) {

xxxxx

});

Server side:

@RequestMapping("/addUpdateUserHomeList")

@ResponseBody

public String addUpdateUserHomeList(String userHomeList, String userId) {

List userHomes = JSON

.parseArray(userHomeList, UserHome.class);//fastJSON

if (userHomes != null && userHomes.size() > 0) {

try {

userService.addUpdateUserHomeList(userHomes, userId);

} catch (Exception e) {

e.printStackTrace();

}

}

return "200";

}

Attached is the ajaxPost code:

function ajaxPost(url,dataParam,callback){ 

var retData=null; 

$.ajax({ 

type: "post", 

url: url, 

data: dataParam, 

dataType: "json", 

success: function (data,status) { 

// alert(data); 

retData=data; 

if(callback!=null&&callback!=""&&callback!=undefined) 

callback(data,status); 

}, 

error: function (err,err1,err2) { 

alertMsg.error("调用方法发生异常:"+JSON.stringify(err)+"err1"+ JSON.stringify(err1)+"err2:"+JSON.stringify(err2)); 

} 

}); 

return retData; 

}

The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.

Related articles:

The solution to the problem of always reporting status=parsererror when interacting with Servlet and Ajax

Ajax verification is repeated Implementation code

Ajax implements phpcms like function (graphic tutorial)

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