视图消息服务优化

src/message/view-message-service.ts

@@ -264,10 +264,11 @@ export default class ViewMessageService {
             // 启用缓存
             if(isEnableCache){
                 const callback:Function = (context:any ={},data:any ={},tag:string,promise:Promise<any>) =>{
+                    const callbackKey:string = `${JSON.stringify(context)}-${JSON.stringify(data)}-${tag}`;
                     promise.then((result:any) =>{
                         if(result.length > 0){
-                            ViewMessageService.messageCached.set(`${JSON.stringify(context)}-${JSON.stringify(data)}-${tag}`,{items:result});
-                            ViewMessageService.messageCache.delete(`${JSON.stringify(context)}-${JSON.stringify(data)}-${tag}`);
+                            ViewMessageService.messageCached.set(callbackKey,{items:result});
+                            ViewMessageService.messageCache.delete(callbackKey);
                             return resolve(result);
                         }else{
                             return resolve([]);
@@ -276,9 +277,10 @@ export default class ViewMessageService {
                         return reject(result);
                     })
                 }
+                const key:string = `${JSON.stringify(context)}-${JSON.stringify(data)}-${tag}`;
                 // 加载完成,从本地缓存获取
-                if(ViewMessageService.messageCached.get(`${JSON.stringify(context)}-${JSON.stringify(data)}-${tag}`)){
-                    let items:any = ViewMessageService.messageCached.get(`${JSON.stringify(context)}-${JSON.stringify(data)}-${tag}`).items;
+                if(ViewMessageService.messageCached.get(key)){
+                    let items:any = ViewMessageService.messageCached.get(key).items;
                     if(items.length >0){
                         if(new Date().getTime() <= messageService.getExpirationTime()){
                             return resolve(items); 
@@ -287,11 +289,11 @@ export default class ViewMessageService {
                 }
                 if (messageService) {
                     // 加载中，UI又需要数据，解决连续加载同一代码表问题
-                    if(ViewMessageService.messageCache.get(`${JSON.stringify(context)}-${JSON.stringify(data)}-${tag}`)){
-                        callback(context,data,tag,ViewMessageService.messageCache.get(`${JSON.stringify(context)}-${JSON.stringify(data)}-${tag}`));
+                    if(ViewMessageService.messageCache.get(key)){
+                        callback(context,data,tag,ViewMessageService.messageCache.get(key));
                     }else{
                         let result:Promise<any> = messageService.getItems(context,data,isloading);
-                        ViewMessageService.messageCache.set(`${JSON.stringify(context)}-${JSON.stringify(data)}-${tag}`,result);
+                        ViewMessageService.messageCache.set(key,result);
                         messageService.setExpirationTime(new Date().getTime() + cacheTimeout);
                         callback(context,data,tag,result);
                     }