为项目添加mock的方法

标签：function return resp req 添加 var 方法 mock

1.安装依赖  "underscore": "^1.13.4",  "util": "^0.12.3",

2.书写配置插件代码  mock-plugin.js

"use strict"; var sysFs = require("fs"); var jsVm = require("vm"); var sysUtil = require("util"); var sysPath = require("path"); var request = require("request"); var urlParser = require("url"); var queryString = require("querystring"); var _ = require("underscore"); var async = require("async"); var dataEncoding = "utf-8"; var mockManager = {   respFuncMap: {     proxy_pass: function (confResp, context, done) {       var mockUrlObj = urlParser.parse(confResp);       var mockQueryStringObj = queryString.parse(mockUrlObj.query);       var req = context.req;       var reqUrlObj = urlParser.parse(req.url);       var reqQueryStringObj = queryString.parse(reqUrlObj.query);       mockUrlObj.query = queryString.stringify(         {},         mockQueryStringObj,         reqQueryStringObj       );       mockUrlObj.search = "?" + mockUrlObj.query;       var proxyOptions = {         set_header: {},       };       proxyOptions.url = urlParser.format(reqUrlObj);       proxyOptions.headers = _.extend({}, req.headers, {         host: mockUrlObj.host,       });       var result;       var reqMethod = req.method.toUpperCase();       if (reqMethod === "GET") {         result = request.get(proxyOptions).pipe(context.resp);       } else if (reqMethod === "POST") {         result = request.post(proxyOptions).pipe(context.resp);       }       return result.on("end", function () {         return done();       });     },     raw: function (confResp, context, done) {       var jsonp = context.rule.jsonp || "callback";       var queryObj = context.req.query;       var callback;       for (var key in queryObj) {         if (key === jsonp) {           callback = queryObj[key];         }       }       var resp = context.resp;       var jsonString = mockManager.getContent(confResp);       if (callback) {         resp.setHeader("Content-Type", "application/x-javascript");         jsonString = [callback, "(", jsonString.trim(), ")"].join("");       } else {         resp.setHeader("Content-Type", "application/json");       }       resp.write(jsonString);       return done();     },     action: function (confResp, context, done) {       if (!sysUtil.isFunction(confResp)) {         var content = mockManager.getContent(confResp);         var mockRespBuffer = {           module: {},         };         var baseObj;         var resp = context.resp;         try {           jsVm.runInNewContext(content, mockRespBuffer);           baseObj = mockRespBuffer.module;           if (sysUtil.isFunction(baseObj.exports)) {             baseObj.exports(context.req, resp, context);           } else if (sysUtil.isObject(baseObj.exports)) {             resp.setHeader("Content-Type", "application/json");             resp.write(JSON.stringify(baseObj.exports), dataEncoding);           } else {             // TODO           }         } catch (e) {           console.log("执行", confResp, "失败:", e);         }       } else {         confResp(contex.req, resp, context);       }       return done();     },   },   init: function (mockConf) {     var confFileStat = sysFs.statSync(mockConf);     this.mockConf = mockConf;     this.mockConfMtime = confFileStat.mtime;     this.mockRules = [];     this.checkInterval = 1000;     this.doUpdate();     this.lastCheckTime = new Date();   },   getMockRule: function (url, method) {     var mockRules = this.mockRules;     var i, mockConfs, tmpRule, result;     for (var i = 0, mockConfs = mockRules.length; i < mockConfs; i++) {       tmpRule = mockRules[i];       if (sysUtil.isRegExp(tmpRule.pattern)) {         result = url.match(tmpRule.pattern);       } else {         if (method === "POST") {           result = url === tmpRule.pattern;         } else {           result = url.indexOf(tmpRule.pattern) === 0;         }       }       if (result) {         return tmpRule;       }     }     return null;   },   doResponse: function (mockRule, req, resp, options) {     var mockResp = mockRule.responder;     var actionKey = "action";     if (typeof mockResp === "string") {       actionKey = this.getActionKey(mockResp);     }     console.log(       "API REQUEST: ",       req.url,       " => mocked to => ",       sysPath.resolve(mockResp)     );     var respFunc = this.respFuncMap[actionKey];     var respTasks = [       function (seriesCallback) {         return respFunc(           mockResp,           {             req: req,             resp: resp,             rule: mockRule,             options: options,           },           seriesCallback         );       },     ];     return async.series(respTasks, function (err) {       if (err) {         return resp.end(err);       } else {         return resp.end();       }     });   },   getActionKey: function (mockResp) {     var extName = sysPath.extname(mockResp);     if (/https?:\/\//.test(mockResp)) {       return "proxy_pass";     } else {       switch (extName) {         case ".json":           return "raw";         case ".js":           return "action";         default:           return "raw";       }     }   },   doUpdate: function () {     var self = this;     var nowMs = new Date();     if (nowMs - this.lastCheckTime >= self.checkInterval) {       var checkFileStat = sysFs.statSync(self.mockConf);       if (checkFileStat.mtime !== self.mockConfMtime) {         try {           var mockConfBuffer = {             module: {},           };           var content = sysFs.readFileSync(this.mockConf, dataEncoding);           jsVm.runInNewContext(content, mockConfBuffer);           var configObj = mockConfBuffer.module.exports;           var tmpRules = configObj.rules || [];           var tmpKey, tmpAction;           delete configObj.rules;           for (tmpKey in configObj) {             tmpAction = configObj[tmpKey];             tmpRules.push({               pattern: tmpKey,               responder: tmpAction,             });           }           self.mockRules = tmpRules;         } catch (e) {           console.log("mock配置文件出错：", e.toString());         }       }     }   },   getContent: function (relativePath) {     var dirname = sysPath.dirname(this.mockConf);     var filePath = sysPath.join(dirname, relativePath);     var targetPath;     if (sysFs.existsSync(filePath)) {       targetPath = filePath;     } else if (sysFs.existsSync(filePath + ".json")) {       targetPath = filePath + ".json";     } else if (sysFs.existsSync(filePath + ".js")) {       targetPath = filePath + ".js";     } else {       throw new Error("path:" + relativePath + " not exists");     }     return sysFs.readFileSync(targetPath, dataEncoding);   }, };
function noMock(req, resp, next) {   return next(); }
module.exports = function (options) {   var mockConf = options.mockConf;   if (mockConf) {     if (!sysFs.existsSync(mockConf)) {       console.log("mock 配置", mockConf, "不存在");       return noMock;     }   } else {     return noMock;   }   mockManager.init(mockConf);   return function (req, resp, next) {     mockManager.doUpdate();     var mockRule = mockManager.getMockRule(req.url, req.method.toUpperCase());     if (mockRule) {       return mockManager.doResponse(mockRule, req, resp, options);     } else {       return next();     }   }; };   3.建立mock配置文件 mock-conf.js module.exports = { /* 菜单数据mock 目标地址 : mock文件 for example:    "/moirai/user/getResource": "./test/getResource.js", */ };   4.在vue.config.js 或者 webpack的config文件中引入mock配置并使用 // 添加mock配置文件         before (app) { 　　　// withMock 控制是否使用mock             if (withMock) {                 let mockPlugin = require('./mock/mockPlugin')                 app.use(mockPlugin({                   mockConf: './mock/mockConfig.js'                 }))                 console.log('\n本地 mock 加载成功！\n')               }         }  

标签：function,return,resp,req,添加,var,方法,mock
From： https://www.cnblogs.com/jackdongdong/p/17996581