修复DataCenter获取真实数据的问题（避免eval）

src/support/DataCenter.ts

@@ -66,6 +66,18 @@ export default class DataCenter extends EventEmitter{
    * @param expression
    */
   public parse(type: string, expression: string) {
-    return window['eval'](`(console.log(this);this.store['${type}'].${expression})`)
+    let node = this.store[type];
+    let segments = expression.split('.');
+    while(segments.length > 0){
+      const segment = segments.shift();
+      if(!node){
+        console.warn(`can not get ${segment} on ${segment}`);
+        break;
+      }
+      node = node[segment];
+    }
+
+    return node;
+    //return eval(`(this.store['${type}'].${expression})`);
   }
 }