5 ajax interaction methods between Spring MVC front-end and back-end-JS Tutorial-php.cn

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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 });

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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 });

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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);

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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;});

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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; }

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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 });

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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"; }

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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; }

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

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