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/**
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* http请求对ajax封装，减少一些重复业务逻辑的编写
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* @author fengshuonan
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*/
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layui.define(['jquery'], function (exports) {
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var $ = layui.$;
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/**
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* 创建一个ajax的请求类
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*
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* @param url 请求后端的url
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* @param method http请求方法，写get或者post
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* @param successCallback 请求成功的回调函数
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* @param errorCallback 请求失败的回调函数，后端返回http状态码500
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*
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* 使用方法：
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*
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* var request = new HttpEncryptionRequest('/user/list', 'get', function(data){
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* // ...
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* }, function(){
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* // ...
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* });
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* request.start();
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*/
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var HttpEncryptionRequest = function (url, method, successCallback, errorCallback) {
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// 请求的url，一般传参时候需要带上contextPath
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this.url = url;
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// http请求的方法，默认不传为post，一般传 'get' 或 'post'
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if (method === "" || method == null) {
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this.method = "post";
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} else {
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this.method = method;
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}
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// 请求成功的回调
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this.successCallback = successCallback;
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// 请求失败的回调
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this.errorCallback = errorCallback;
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// 请求的数据
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this.dataObject = {};
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// 请求的content-type，默认 "application/json"
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this.contentType = "application/json";
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// 预期服务器返回的数据类型，默认都为 json
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this.dataType = "json";
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// 默认请求都是同步，不开启异步
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this.async = false;
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};
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HttpEncryptionRequest.prototype = {
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/**
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* 执行http请求
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*
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* @param parseJsonFlag 是否在请求时，参数转化为json，如果传 true 就是
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*/
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start: function (parseJsonFlag) {
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var me = this;
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var result = "";
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// 如果请求需要转化为json则将data转为json
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if (parseJsonFlag === true) {
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me.dataObject = JSON.stringify(me.dataObject);
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}
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// 防止http请求缓存
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if (this.url.indexOf("?") === -1) {
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this.url = this.url + "?jstime=" + new Date().getTime();
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} else {
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this.url = this.url + "&jstime=" + new Date().getTime();
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}
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console.log(me.dataObject)
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// 生成解密返回数据的key
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// 初始化ajax
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$.ajax({
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type: me.method,
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url: me.url,
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contentType: me.contentType,
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dataType: me.dataType,
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async: me.async,
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data: me.dataObject,
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beforeSend: function (data) {
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},
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success: function (data) {
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result = data;
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if (me.successCallback !== undefined) {
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me.successCallback(data);
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}
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},
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error: function (xhr) {
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if (me.errorCallback !== undefined) {
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me.errorCallback(xhr.responseJSON);
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}
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}
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});
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return result;
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},
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/**
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* 设置 key-value 形式的参数
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*
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* 此参数组装的是param方式传参的参数，如需传递json请用 setJsonData(data)
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*
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* 如果只传了一个key，则key可以是object类型，会将object所有属性都set上
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*
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* @param key 参数的key
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* @param value 参数值
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*/
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set: function (key, value) {
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if (typeof key === "object") {
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// 遍历object的属性
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for (var item in key) {
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if (typeof item != "function") {
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this.dataObject[item] = key[item];
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}
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}
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} else {
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this.dataObject[key] = (typeof value === "undefined") ? $("#" + key).val() : value;
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}
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return this;
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},
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/**
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* 清空传递参数
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*/
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clear: function () {
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this.dataObject = {};
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return this;
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},
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/**
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* 设置请求的content-type
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*/
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setContentType: function (contentType) {
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this.contentType = contentType;
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return this;
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},
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/**
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* 设置预期服务器返回的数据类型，默认都为 json
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*/
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setDataType: function (dataType) {
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this.dataType = dataType;
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return this;
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},
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/**
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* 设置请求同步还是异步，true-异步，false-同步
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*/
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setAsync: function (async) {
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this.async = async;
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return this;
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}
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};
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exports('HttpEncryptionRequest', HttpEncryptionRequest);
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});
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q18idc
4 years ago