模块化管理ajax
web前端通过ajax调用后台接口的数据,当项目比较大、接口比较多时,零散的ajax调用会使项目看上去非常凌乱,而且重复调用的几率高。
所以我推荐在工作时将ajax进行统一的封装,将接口进行统一的管理。
首先,在顶层js中封装ajax的基本方法。
var ajaxDataController = function () { //打印ajax错误日志 function printLog(result, url, params, response) { console.error('AJAX 请求异常 - %s\n错误信息:\n%c%s\n%c请求链接:%s\n%c请求参数:%c%s\n%c返回数据:%c%s', 'color:red;', result, 'color:#333;', 'color:blue', url, 'color:#333;', 'color:green', JSON.stringify(params), 'color:#333;', 'color:#643A3A', response) } function dataHandle(url, params, callback, async, method) { if (!method) { throw 'method 参数未设置' } if ((typeof params) === 'function') { callback = params params = null } params = params || {}; params = $.extend({ date: new Date().getTime().toString() }, params); async = async == null ? true : async; var ERROR_PROCESS_MODE = 0; if (typeof (params.ERROR_PROCESS_MODE) != "undefined") { if (params.ERROR_PROCESS_MODE==1) { ERROR_PROCESS_MODE = 1; try { delete params.ERROR_PROCESS_MODE; } catch (e) { } } } $.ajax({ async: async, url: url, dataType: 'json', data: params, type: method, success: function (result, textStatus, xhr) { if (result.success === false) { printLog(result, url, params, xhr.responseText) } switch (result.status) { case 200: callback(result); break; case 400: if (window.parent) { alert(result.errorMessage); } else { alert(result.errorMessage); } break; case 511: //未登录 callback(result); break; case 512: if (ERROR_PROCESS_MODE!=1) { if (window.parent) { alert(result.errorMessage); } else { alert(result.errorMessage); } } callback(result); break; case 513: callback(result); break; default: //console.log(typeof xhr.responseText); if(xhr.responseText.indexOf("<!DOCTYPE html>")!=-1){ result={status:511,errorMessage:"登录超时,请重新登录",resultObject:null}; callback(result); break; } if (window.parent) { alert("系统出现异常,请稍候再试"); } else { alert("系统出现异常,请稍候再试"); } callback(result); break; } }, error: function (xhr, textStatus, error) { if (window.parent) { alert("系统出现异常,请稍候再试"); } else { alert("系统出现异常,请稍候再试"); } printLog(xhr.status, textStatus + ' - ' + error, url, params, xhr.responseText); } }); } return { post: function (url, params, callback, async) { dataHandle(url, params, callback, async, 'post'); }, put: function (url, params, callback, async) { dataHandle(url, params, callback, async, 'put'); }, del: function (url, params, callback, async) { dataHandle(url, params, callback, async, 'delete'); }, get: function (url, params, callback, async) { dataHandle(url, params, callback, async, 'get'); } }; };
然后,在模块中加入可供调用的接口的集合。
1 var myController = { 2 _ajaxHander: ajaxDataController(), 3 _url: { 4 //所有的接口地址 5 POST_REPORT1: '/report/report1', 6 7 POST_REPORT2: '/report/report2', 8 9 POST_REPORT3: '/report/report3' 10 }, 11 12 Report1 : function(params,callback, async) { 13 14 this._ajaxHander.post(this._url.POST_REPORT1, params, function(data) { 15 callback(data); 16 }, async); 17 }, 18 19 Report2 : function(params,callback, async) { 20 21 this._ajaxHander.post(this._url.POST_REPORT2, params, function(data) { 22 callback(data); 23 }, async); 24 }, 25 26 Report3 : function(params,callback, async) { 27 28 this._ajaxHander.post(this._url.POST_REPORT3, params, function(data) { 29 callback(data); 30 }, async); 31 } 32 33 } 34
最后,我们就可以直接调用相应的接口了。
1 function loadReport1(params) { 2 myController.Report1(params, function (data) { 3 if (data.status == 511) { 4 5 } 6 if(data.status==200 && data.resultObject!=null){ 7 8 }else { 9 10 } 11 }); 12 }