基于requirejs的vue2项目(二)

摘要：减少服务器的请求对于和这两个特殊写发的文件因为的打包不识别，要进行特殊处理

上一节提完了构思和大体实现下面来看具体的

配置文件主要是是用来让后端开发自主添加页面，并通过该配置生成route和加载对应的store，这样就省去了后端去了解vue-router和vuex的用法了;

配置文件格式如下

这里采用umd格式开头是为了后续nodejs进行调用

(function(global, factory) {
    typeof exports === "object" && typeof module !== "undefined" ? module.exports = factory() :
        (global.__config__ = factory());
})(this, function() {
    var __config__ = {
        //规则说明
        /**
         * route : 路由
         * path  : 模块路径
         * store : 是否加载对应store
         * sync  : 是否同步加载
         */
        modules: [
            { route: "/", path: "Login", store: true, sync:true },
            { route: "/Main", path: "Main" },
            ...
        ]
    }
});

有了上面的config文件，我们就可以通过配置来来生成router了

代码如下

在define前根据config动态define一些模块用来给业务模块动态返回template和mixin一些公用方法

;
(function () {
  var businessModules = ["vue", "store/index", "vue-router"].concat(__config__.map(function (o) {
    var module = o
      .route
      .replace(//:[^/]*/g, "")
      .replace(///g, "_")
    if (o.sync) {
      var func = ";define("business/base/" + module + "",["__module__","business/" + o.path + "/index","text!business/" + o.path + "/tpl.html"],function(factory,businessModule,template){ return factory("" + module + "", businessModule("" + module + ""),template)})"
      __config__.dynamic(func)
      return "business/base/" + module
    }
  }))
  define(businessModules, function (Vue, store, VueRouter) {
    Vue.use(VueRouter)
    var m = []
      .slice
      .call(arguments, 3)
    var routes = __config__.map(function (o, i) {
      var clone = Object.assign({}, o)
      clone.name = clone
        .route
        .replace(//:[^/]*/g, "")
        .replace(///g, "_")
      delete clone.store
      clone.path = clone.route
      delete clone.route
      clone.component = clone.sync
        ? m[i]
        : function (resolve) {
          require(["__module__", "business/" + o.path + "/index", "text!business/" + o.path + "/tpl.html"], function (factory, businessModule, template) {
            resolve(factory(clone.name, businessModule(clone.name), template))
          })
        }
      return clone
    })
    var router = new VueRouter({mode: "hash", routes: routes})
    var firstLoad = true
    var goto = function (to, from, next) {
      var tName = to.name || "_"
      var fName = from.name || "_"
      var toDepth = tName
        .split("_")
        .length
      var fromDepth = fName
        .split("_")
        .length
      toDepth += (tName === "_"
        ? -1
        : 0)
      fromDepth += (fName === "_"
        ? -1
        : 0)
      var direction = toDepth - fromDepth
      if (firstLoad && toDepth > 0) {
        firstLoad = false
        next({path: "/"})
      } else {
        store.dispatch("transition", {
          direction: direction,
          to: tName,
          from: fName
        })
        window.setTimeout(function () {
          next()
        })
        firstLoad = false
      }
    }
    router.beforeEach(function (to, from, next) {
      var args = arguments
      if (to.path === "/") {
        goto.apply(this, args)
        return
      }
      store
        .dispatch("auth")
        .then(function () {
          goto.apply(this, args)
        }, function () {
          Vue.$toast({message: "验证信息已失效，请重新登陆", iconClass: "fa fa-close"})
          window.setTimeout(function () {
            next({path: "/"})
          })
        })
    })

    return {tpl: "", router: router}
  })
})()

在define前根据config动态define一些模块用来给store对象添加一些公用getter,mutations和action

(function() {
    var storeModules = [
        "vue",
        "vuex",
        "./transition"
    ].concat(__config__.modules.map(function(o) {
        var module = o.route.replace(///g, "_");
        var func = (o.store == true ?
            ";define("store/modules/base/" + module + "",["__store__factory__","store/modules/" + o.path + "/store"],function(factory,storeModule){ var mb = factory("" + module + ""); var m = new storeModule("" + module + ""); var c = $.extend(true,{},mb, m);  return c; });" :
            ";define("store/modules/base/" + module + "",["__store__factory__"],function(factory){ return factory("" + module + "");});");
        __config__.dynamic(func);
        return "store/modules/base/" + module;
    }));

    define(storeModules, function(Vue, Vuex, transition) {
        Vue.use(Vuex);
        var m = [].slice.call(arguments, 3);
        var modules = {};
        __config__.each(function(o, i) {
            modules[o.route.replace(///g, "_")] = m[i];
        });
        return new Vuex.Store({
            state: {},
            mutations: {},
            actions: {
                transition: transition
            },
            modules: modules
        })
    })
})();

define([
    "vue",
    "vue-router",
    "store/index",
    "router/index",
    "emitter",
    "__install__" //这里面主要是对公用控件的一些初始化 Vue.component({...})
], function(Vue, VueRouter, store, router, Emitter) {
    window.Vue = Vue;
    return {
        run: function() {
            Vue.config.silent = false;
            Vue.config.devtools = true;
            Vue.mixin(Emitter);
            var $vm = new Vue({
                el: "body > div",
                store: store,
                template: router.tpl,
                router: router.router
            });
        }
    }
})

以Login模块为例

文件路径/business/Login/index.js
同目录下还有个tpl.html

define(["vue", "vuex"], function(Vue, Vuex) {
    return function module(moduleName) {
        return {
            data: function() {
                return {
                    username: "",
                    password: ""
                }
            },
            methods: Object.assign(
                Vuex.mapActions([
                    "verify"
                ]), {
                    sign: function() {
                        var that = this;
                        this.verify({ username: this.username, password: this.password }).then(function() {
                            that.$router.push("/Main");
                        }, function(mes) {
                            Vue.$toast({
                                message: mes || "帐号或者密码错误",
                                iconClass: "fa fa-close"
                            });
                        });
                    }
                })
        }
    }
})

对应的store

文件为/store/module/Login/store.js

define(function() {
    return function storeModule(module) {
        this.state = {
            sign: true,
            auth: "" //用于存储登陆成功后的验证码，用于后继登陆状态验证
        }
        this.getters = {
            isLogin: function(state) {
                return state.sign;
            }
        }
        this.mutations = {
            success: function(state, param) {
                state.sign = true;
                state.auth = param ? param : state.auth;
            },
            fail: function(state) {
                state.sign = false;
                state.auth = "";
            }
        }
        this.actions = {
            //页面跳转过程中验证用
            verify: function(content, opt) {
                return new Promise(function(resolve, reject) {
                    $.post("/api/verify", { username: opt.username, password: opt.password }).then(function(data) {
                        if (data.state) {
                            content.commit("success", data.auth);
                            resolve();
                        } else {
                            content.commit("fail");
                            reject();
                        }
                    }, function() {
                        content.commit("fail");
                        reject("服务器错误！请联系管理员");
                    });
                })
            },
            //登陆用
            auth: function(content) {
                return new Promise(function(resolve, reject) {
                    $.get("/api/auth", { auth: content.state.auth }).then(function(data) {
                        if (data) {
                            content.commit("success");
                            resolve(data);
                        } else {
                            content.commit("fail");
                            reject();
                        }
                    });
                });
            }
        }
    }
})

平时后端开发时不涉及全局状态控制时就可以不用store，ajax可以直接写在模块内

以上就是基于requirejs的vue2项目的核心内容

该项目在不打包的情况下能够正常运行，各模块都会在页面加载时进行预加载；后继还将进行所有文件打。减少服务器的请求对于store和router这两个特殊写发的文件（因为requirejs的r.js打包不识别），要进行特殊处理