update: 优化代码

package.json

@@ -5,11 +5,11 @@
   "author": "liyj31 <yujun2.li@meicloud.com>",
   "private": true,
   "scripts": {
-    "dev": "cross-env PACK_ENV=dev node build/dev-server.js",
+    "dev": "cross-env PACK_ENV=dev && node build/dev-server.js",
     "start": "npm run dev",
     "build": "npm run build:test",
-    "build:test": "cross-env PACK_ENV=test node build/build.js",
-    "build:prod": "cross-env PACK_ENV=product node build/build.js",
+    "build:test": "cross-env PACK_ENV=test && node build/build.js",
+    "build:prod": "cross-env PACK_ENV=product && node build/build.js",
     "build:report": "npm run build --report"
   },
   "dependencies": {

src/js/polyfill/request.js

@@ -12,6 +12,10 @@ function isObject(value) {
   return value !== null && typeof value === 'object'
 }
 
+function isString(fd) {
+  return Object.prototype.toString.call(fd) === '[object String]'
+}
+
 function isFormData(fd) {
   return Object.prototype.toString.call(fd) === '[object FormData]'
 }
@@ -35,7 +39,7 @@ function params2object(url) {
       .forEach((n) => {
         n = n.split('=')
         if (n.length === 2) {
-          params[n[0]] = n[1]
+          params[n[0]] = decodeURIComponent(n[1])
         }
       })
   }
@@ -43,6 +47,7 @@ function params2object(url) {
 }
 
 function request(opt) {
+  let serializer = opt.serializer || 'form'
   opt = opt || {}
   if (!opt.url) {
     return Promise.reject('interface url is required!')
@@ -78,35 +83,53 @@ function request(opt) {
   // post非json即是form。
   if (opt.method.toLowerCase() === 'post') {
     var data = opt.data
-    if (isFormData(data)) {
-      opt.headers = Object.assign(opt.headers || {}, {
-        'Content-Type': 'application/x-www-form-urlencoded'
-      })
+    const headers = opt.headers
+    const contentType = headers['content-type'] || headers['Content-Type'] || headers['CONTENT-TYPE'] || ''
+    if (contentType.indexOf('application/json') !== -1) {
+      serializer = 'json'
+    }
+    if ((serializer === 'form') && isFormData(data)) {
       opt.data = formData2obj(data)
-    } else if (isObject(data)) {
-      opt.headers = Object.assign(opt.headers || {}, {
-        'Content-Type': 'application/json;charset=UTF-8'
-      })
+    }
+    else if (isString(data)) {
+      if (serializer === 'json') {
+        try {
+          opt.data = JSON.parse(data)
+        } catch (error) {
+          opt.data = {}
+        }
+      } else {
+        opt.data = params2object(data)
+      }
     }
   }
 
   // 处理header
   opt.headers = opt.headers || {}
+  const headers = {}
   // headers字段值必须是字符串型
   Object.keys(opt.headers).forEach(function (key) {
     var val = opt.headers[key]
+    if (val) {
       var type = typeof val
-    if (type === 'undefined') {
-      delete opt.headers[key]
-    } else if (type !== 'string') {
-      opt.headers[key] = val + ''
+      if (type !== 'string') {
+        val = val + ''
+      }
+      // 因content-type可能存在大小写不规范，这里先过滤掉，后面根据serializer统一添加
+      var _key = key.toLowerCase()
+      if (_key !== 'content-type') {
+        headers[_key] = val
+      }
     }
   })
+  // 根据serializer统一添加content-type
+  headers['content-type'] = serializer === 'json' ? 'application/json' : 'application/x-www-form-urlencoded'
+  opt.headers = headers
 
   return new Promise(function (resolve, reject) {
     qing.call('request', {
       url: opt.url,
-      method: opt.method,
+      method: opt.method.toUpperCase(),
       headers: opt.headers,
       header: opt.headers,
       data: opt.data || {},