first commit

历届学生/逯帅帅/项目开发/上课项目/美食App/js/http/api.js

@@ -0,0 +1,63 @@
+class Api {
+
+  constructor() {
+    this.ajax = new XMLHttpRequest();
+    this.baseUrl = config.baseUrl();
+  }
+
+  get(option) {
+    // toast.loading();
+
+    // 转换get参数
+    var params = "";
+    for (const key in option.data) {
+      params+= `&${key}=${option.data[key]}`
+    }
+
+    params = params.replace("&", "?")
+    option.url = this.baseUrl + option.url + params;
+
+    return new Promise((resolve,reject) => {
+      this.ajax.open("GET",option.url);
+      this.ajax.send();
+      return this.readystatechange(resolve, reject)
+    });
+  }
+
+  post(option) {
+    this.ajax = new XMLHttpRequest();
+    toast.loading();
+    return new Promise( (resolve,reject) => {
+      this.ajax.open("POST",this.baseUrl+option.url);
+      this.ajax.setRequestHeader("Content-Type","application/json");
+      this.ajax.setRequestHeader("bmy","liubing");
+
+      this.ajax.send(option.data);
+      return this.readystatechange(resolve, reject)
+    });
+  }
+
+  readystatechange(success,error) {
+    this.ajax.onreadystatechange = () => {
+      if (this.ajax.readyState == 4 ) {
+        if (this.ajax.status == 200) {
+          var data = JSON.parse(this.ajax.response);
+          // toast.clearLoading();
+          switch (data.status) {
+            case 200:
+              success(data.result);
+              break;
+            case 500:
+              toast.tips({ message: data.message });
+              throw new Error(data.message);
+              break;
+          }
+        } else {
+          error && error(this.ajax)
+          throw new Error("网络请求出错");
+        }
+      }
+    }
+  }
+
+}