399 lines
12 KiB
JavaScript
399 lines
12 KiB
JavaScript
/**
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* Created by Lemon on 17/5/8.
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*/
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const TAG_REQUEST_UTIL = 'RequestUtil';
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const URL_BASE = "http://apijson.cn:8080"; // 基地址
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const URL_GET = URL_BASE + "/get"; // 常规获取数据方式
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const URL_HEAD = URL_BASE + "/head"; // 检查，默认是非空检查，返回数据总数
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const URL_GETS = URL_BASE + "/gets"; // 通过POST来GET数据，不显示请求内容和返回结果，一般用于对安全要求比较高的请求
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const URL_HEADS = URL_BASE + "/heads"; // 通过POST来HEAD数据，不显示请求内容和返回结果，一般用于对安全要求比较高的请求
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const URL_POST = URL_BASE + "/post"; // 新增(或者说插入)数据
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const URL_PUT = URL_BASE + "/put"; // 修改数据，只修改传入字段对应的值
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const URL_DELETE = URL_BASE + "/delete"; // 删除数据
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/**请求，全走HTTP POST
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* @param url
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* @param rq
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*/
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function request(url, json, notAlertRequest, onreadystatechange) {
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if (json == null || json instanceof Array || (json instanceof Object) == false) {
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alertOfDebug("request json == null || json instanceof Array || (json instanceof Object) == false !!! >> return null;");
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return null;
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}
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if (url == null || (typeof url != "string")) {
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alertOfDebug("request url == null || typeof url != string !!! >> return null;");
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return null;
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}
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if (url.length < 3 || url.indexOf(".") < 0) {
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alertOfDebug("request url.length < 3 || url.indexOf(.) < 0 !!! >> return null;");
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return null;
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}
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var rqf = format(JSON.stringify(json));
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var branch = url.substring(URL_BASE.length + 1, url.length);
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var end = branch.indexOf("/");
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var method = branch.substring(0, end < 0 ? branch.length : end);
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var METHOD = method.toUpperCase();
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if (! notAlertRequest) {
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alert("Request(" + METHOD + "):\n" + rqf);
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}
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var request = new XMLHttpRequest();
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request.open("POST", url, true);
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request.setRequestHeader("Content-type", "application/json");
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request.onreadystatechange = onreadystatechange != null ? onreadystatechange : function () {
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if (request.readyState !== 4) {
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return;
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}
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if (request.status === 200) {
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alert("Response(" + METHOD + "):\n" + format(request.responseText));
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} else {
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alert("Response(" + METHOD + "):\nstatus" + request.status + "\nerror:" + request.error);
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}
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}
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request.send(rqf);
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//原生请求>>>>>>>>>>>>>>>>>>>>>>>>>>
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//JQuery ajax请求<<<<<<<<<<<<<<<<<<<<<<<<<<
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// $.ajax({
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// type: isGet ? "GET" : "POST",
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// url: isGet ? url + "/" + rq : url,
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// contentType: "application/json", //必须
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// dataType: "json", //返回值类型，非必须
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// data: isGet ? null : rq,
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// success: function (response) {
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// alertOfDebug(response);
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// }
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// });
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//JQuery ajax请求>>>>>>>>>>>>>>>>>>>>>>>>>>
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//VUE axios请求<<<<<<<<<<<<<<<<<<<<<<<<<<
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// if (isGet) {
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// axios.get(url + "/" + rq, null)
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// .then(function (response) {
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// console.log(response);
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// })
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// .catch(function (error) {
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// console.log(error);
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// });
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// } else {
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// axios({
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// method: 'post',
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// url: url + "/",
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// data: json
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// }).then(function (response) {
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// alertOfDebug(response);
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// }).catch(function (error) {
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// alertOfDebug(error);
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// });
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// }
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//VUE axios请求>>>>>>>>>>>>>>>>>>>>>>>>>>
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return request;
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}
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/**编码JSON，转义所有String
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* @param json 任意类型
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*/
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function encode(json) {
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// alertOfDebug("encode before:\n" + format(JSON.stringify(json)));
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if (typeof json == "string") { //json instanceof String) {
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json = encodeURIComponent(json);
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}
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else if (json instanceof Array) {
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// alertOfDebug("encode json instanceof Array");
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for (var i = 0; i < json.length; i ++) {
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// alertOfDebug("json[" + i + "] = " + format(JSON.stringify(json[i])));
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json[i] = encode(json[i]);
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}
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}
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else if (json instanceof Object) {
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// alertOfDebug("encode json instanceof Object");
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for (var key in json) {
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// alertOfDebug("encode json[" + key + "] = " + format(JSON.stringify(json[key])));
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json[key] = encode(json[key]);
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}
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}
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// alertOfDebug("encode after:\n" + format(JSON.stringify(json)));
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return json;
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}
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/**格式化JSON串
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* @param json
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*/
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function format(json) {
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try {
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return JSON.stringify(JSON.parse(json), null, "\t");
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} catch(e) {
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log(TAG_REQUEST_UTIL, 'format try { ... } catch (err) { \n ' + e);
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return json;
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}
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// 导致格式化后代码很难看，像没格式化一样
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// if (json == null || json == '') {
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// console.log('format json == null || json == "" >> return json;');
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// return json;
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// }
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//
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// if (json instanceof Object) { //避免赋值影响传进来的json
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// return JSON.stringify(json, null, "\t");
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// }
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//
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// var jsonObj;
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// if (typeof json == 'string'){
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// try {
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// jsonObj = JSON.parse(json);
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// } catch (err) {
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// console.log('format try { jsonObj = JSON.parse(json); } catch (err) { \n ' + err);
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// return json;
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// }
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// }
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// else {
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// console.log('format json type error !');
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// return json;
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// }
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// return JSON.stringify(jsonObj, null, "\t");
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}
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function log(tag, msg) {
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console.log(tag + '.' + msg);
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}
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/**将json字符串转为JSON对象
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* @param s
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*/
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function parseJSON(s) {
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if (s instanceof Object) {
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alertOfDebug("parseJSON s instanceof JSON >> return s;");
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return s;
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}
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if (typeof s != "string") {
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alertOfDebug("parseJSON typeof json != string >> s = \"\" + s;");
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s = "" + s;
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}
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// alertOfDebug("parseJSON s = \n" + s);
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return JSON.parse(s);
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}
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/**测试用的提示
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* @param s
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*/
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function alertOfDebug(s) {
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// alert(s); //注释掉就都不会弹窗了
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}
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/**是否为空
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* @param s
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* @returns {boolean}
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*/
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function isEmpty(s) {
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return s == null || s.trim() == '';
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}
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//常用请求<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
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/**获取单个对象
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* @param table String, 对象名，如 "User"
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* @param id Long, 对象id，如 1
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* @param notAlert 不弹窗显示
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* @param callBack 请求成功回调
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*/
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function getObject(table, id, notAlert, callBack) {
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alertOfDebug("getObject table = " + table + "; id = " + id);
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return request(URL_GET, newSingleJSON(table, { "id": id }, null), notAlert, callBack);
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}
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/**获取数组
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* @param table String, 对象名，如 "User"
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* @param json {}, 对象内容，如 {"sex":1}
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* @param count int, 每页数量
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* @param page int, 页码
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* @param notAlert 不弹窗显示
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* @param callBack 请求成功回调
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*/
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function getArray(table, json, count, page, notAlert, callBack) {
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alertOfDebug("getArray table = " + table + "; count = " + count + "; page = " + page
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+ "; json = \n" + format(json));
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return request(URL_GET, newArrayJSON(table, json, count, page), notAlert, callBack);
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}
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/**新增单个对象
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* @param table String, 对象名，如 "User"
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* @param json {}, 对象内容，如 {"sex":1}
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* @param notAlert 不弹窗显示
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* @param callBack 请求成功回调
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*/
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function postObject(table, json, notAlert, callBack) {
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alertOfDebug("postObject table = " + table
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+ "; json = \n" + format(json));
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var id = json == null ? null : json['id'];
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if (id != null) {
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alertOfDebug('postObject POST 请求不能设置 id ！');
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return;
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}
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return request(URL_POST, newSingleJSON(table, json, table), notAlert, callBack);
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}
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/**修改单个对象
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* @param table String, 对象名，如 "User"
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* @param json {}, 对象内容，如 {"sex":1}
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* @param notAlert 不弹窗显示
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* @param callBack 请求成功回调
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*/
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function putObject(table, json, notAlert, callBack) {
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alertOfDebug("putObject table = " + table
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+ "; json = \n" + format(json));
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if (json == null) {
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alertOfDebug('putObject PUT 请求必须设置 table对象 ！');
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return;
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}
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if (json["id"] == null || json["id"] <= 0) {
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alertOfDebug('putObject PUT 请求必须设置 id 且 id > 0 ！');
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return;
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}
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return request(URL_PUT, newSingleJSON(table, json, table), notAlert, callBack);
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}
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/**删除单个对象
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* @param table String, 对象名，如 "User"
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* @param id Long, 对象id，如 1
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* @param notAlert 不弹窗显示
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* @param callBack 请求成功回调
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*/
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function deleteObject(table, id, notAlert, callBack) {
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alertOfDebug("deleteObject table = " + table + "; id = " + id);
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if (id == null || id <= 0) {
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alertOfDebug('deleteObject DELETE 请求必须设置 id 且 id > 0 ！');
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return;
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}
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return request(URL_DELETE, newSingleJSON(table, { "id": id }, table), notAlert, callBack);
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}
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/**修改多个对象
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* @param table String, 对象名，如 "User"
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* @param json {}, 对象内容，如 {"sex":1}
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* @param notAlert 不弹窗显示
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* @param callBack 请求成功回调
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*/
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function putArray(table, json, notAlert, callBack) {
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alertOfDebug("putArray table = " + table
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+ "; json = \n" + format(json));
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var idArray = json == null ? null : json["id{}"];
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if (idArray == null || (idArray instanceof Array) == false) {
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alertOfDebug('putArray idArray == null || (idArray instanceof Array) == false' +
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' >> return; PUT 请求必须设置 id{}:[] ！');
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return;
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}
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return request(URL_PUT, newSingleJSON(table, json, table + "[]"), notAlert, callBack);
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}
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/**删除多个对象
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* @param table String, 对象名，如 "User"
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* @param idArray [], 对象id数组，如 [1, 2, 3]
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* @param notAlert 不弹窗显示
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* @param callBack 请求成功回调
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*/
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function deleteArray(table, idArray, notAlert, callBack) {
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alertOfDebug("deleteArray table = " + table
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+ "; idArray = \n" + format(idArray));
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if (idArray == null || (idArray instanceof Array) == false) {
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alertOfDebug('deleteArray idArray == null ! DELETE 请求必须设置 id{}:[] ！');
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return;
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}
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return request(URL_DELETE, newSingleJSON(table, { "id{}": idArray }, table + "[]"), notAlert, callBack);
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}
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/**新建单个对象请求
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* @param table String, 对象名，如 "User"
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* @param json {}, 对象内容，如 {"sex":1}
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* @param tag String, 写操作标识，一般来说，操作单个对象时和table相同，操作多个对象时是 table[]
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*/
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function newSingleJSON(table, json, tag) {
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// alertOfDebug("newSingleJSON table = " + table + "; tag = " + tag
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// + "; json = \n" + format(json));
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return parseJSON(newSingleString(table, json, tag));
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}
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/**新建数组请求
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* @param table String, 对象名，如 "User"
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* @param json {}, 对象内容，如 {"sex":1}
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* @param count int, 每页数量
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* @param page int, 页码
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*/
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function newArrayJSON(table, json, count, page) {
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// alertOfDebug("newArrayJSON table = " + table + "; count = " + count + "; page = " + page
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// + "; json = \n" + format(json));
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return parseJSON(newArrayString(table, json, count, page));
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}
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/**新建单个对象请求
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* @param table String, 对象名，如 "User"
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* @param json {}, 对象内容，如 {"sex":1}
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* @param tag String, 写操作标识，一般来说，操作单个对象时和table相同，操作多个对象时是 table[]
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*/
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function newSingleString(table, json, tag) {
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if (json == null) {
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alertOfDebug('newSingleString json == null >> return;');
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return;
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}
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// alertOfDebug("newSingleString table = " + table + "; tag = " + tag
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// + "; json = \n" + format(json));
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return "{\""
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+ table + "\":"
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+ JSON.stringify(json)
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+ (isEmpty(tag) ? "" : ",\"tag\":\"" + tag + "\"")
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+ "}";
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}
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/**新建数组请求
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* @param table String, 对象名，如 "User"
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* @param json {}, 对象内容，如 {"sex":1}
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* @param count int, 每页数量
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* @param page int, 页码
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*/
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function newArrayString(table, json, count, page) {
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if (json == null) {
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alertOfDebug('newArrayString json == null >> return;');
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return;
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}
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// alertOfDebug("newArrayString table = " + table + "; count = " + count + "; page = " + page
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// + "; json = \n" + format(json));
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return "{\"" + table + "[]\":{" + "\"count\":" + count + "," + "\"page\":" + page + ",\""
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+ table + "\":" + JSON.stringify(json) + "}}";
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}
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//常用请求>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
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