From 7de4c937e02226348b219fffd342ffcfe89e17b1 Mon Sep 17 00:00:00 2001
From: cpf <1105965053@qq.com>
Date: Tue, 9 Jun 2020 14:24:25 +0800
Subject: [PATCH] =?UTF-8?q?[=E5=AE=8C=E5=96=84]=E7=BD=91=E7=9B=98=E5=9F=BA?=
 =?UTF-8?q?=E6=9C=AC=E5=8A=9F=E8=83=BD=E5=AE=8C=E5=96=84?=
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---
 package.json                                  |  2 +-
 proxy.config.json                             |  2 +-
 src/app/http-interceptors/base-interceptor.ts |  5 +-
 src/app/is-login.service.ts                   | 62 ++++++++++++++++++-
 src/app/navigation/navigation.component.ts    |  2 +-
 5 files changed, 64 insertions(+), 9 deletions(-)

diff --git a/package.json b/package.json
index 958a054..931fb06 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "version": "0.0.0",
   "scripts": {
     "ng": "ng",
-    "start": "ng serve --proxy-config  proxy.config.json  --open --port 4200 ",
+    "start": "ng serve --proxy-config  proxy.config.json  --open --port 4100 ",
     "build": "ng build",
     "test": "ng test",
     "lint": "ng lint",
diff --git a/proxy.config.json b/proxy.config.json
index 0b360df..e8a339a 100644
--- a/proxy.config.json
+++ b/proxy.config.json
@@ -1,6 +1,6 @@
 {
     "/api": {
-      "target": "http://39.106.78.171:8008",
+      "target": "http://192.168.1.250",
       "secure": false,
       "changeOrigin": true
     }
diff --git a/src/app/http-interceptors/base-interceptor.ts b/src/app/http-interceptors/base-interceptor.ts
index 38a7e07..3facba7 100644
--- a/src/app/http-interceptors/base-interceptor.ts
+++ b/src/app/http-interceptors/base-interceptor.ts
@@ -44,10 +44,7 @@ export class BaseInterceptor implements HttpInterceptor {
   private handleError(error: HttpErrorResponse) {
     // 用户认证失败返回登录页
     if (error.status === 401||error.status === 614) {
-      this.token.delete()
-      sessionStorage.clear()
-      window.localStorage.clear()
-      this.router.navigate(['/login'])
+  
       const config = new MatSnackBarConfig();
       config.verticalPosition = 'top';
       config.duration = 3000
diff --git a/src/app/is-login.service.ts b/src/app/is-login.service.ts
index 69ea49a..0f900e1 100644
--- a/src/app/is-login.service.ts
+++ b/src/app/is-login.service.ts
@@ -1,13 +1,71 @@
 import { Injectable } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
 
 @Injectable({
   providedIn: 'root'
 })
 export class IsLoginService {
 
-  constructor() { }
+  constructor(private http: HttpClient,) { }
 
   isLogin:boolean = false; //登录状态
-  xxx:any
+
+
+
+  //下载
+  download (e) {
+    let file = e
+    let fileSize = file.fileLength //下载文件的总大小
+    let shardSize = 10 * 1024 * 1024 //文件大小是否大于10MB
+
+    if (file && fileSize<=shardSize) { //<=10MB时直接下载
+      this.http.get(`/api/Objects/PlanPlatform/${file.objectName}`,{responseType: 'blob'},).subscribe(data=>{
+        let url = window.URL.createObjectURL(new Blob([data])); //createObjectURL创建一个下载Blob的url地址
+        let link = document.createElement("a");
+        link.style.display = "none";
+        link.href = url;
+        link.setAttribute("download", e.fileName);
+        document.body.appendChild(link);
+        link.click();
+      })
+    } else if (file && fileSize>shardSize) { //>10MB时分块下载
+      this.blockingDownload(e) //分段下载
+    }
+
+  }
+
+  //分段下载并合并
+  async blockingDownload (e) {
+    let file = e
+    let fileSize = file.fileLength //下载文件的总大小
+    let shardSize = 3 * 1024 * 1024 //3MB一个分片
+    let allSlice = Math.ceil(fileSize / shardSize) //总文件/3MB===共分多少段
+    let allFile:any = [] //所有的file分段
+
+    for (let i=0;i<allSlice;i++) {
+      let start = i * shardSize //每次下载文件开始位置
+      let end = Math.min(fileSize, start + shardSize-1); //每次下载文件结束为止
+
+      let result =  await new Promise ((result,reject)=>{
+      this.http.get(`/api/Objects/PlanPlatform/${file.objectName}`,{headers:{'range':`bytes= ${start}-${end}`},responseType:'blob'}).subscribe(data=>{
+        result(data) }) 
+      })
+      allFile.push(result)
+
+      if (allFile.length === allSlice) { //合并文件输出给浏览器
+        let url = window.URL.createObjectURL(new Blob(allFile)); //createObjectURL创建一个下载Blob的url地址
+        let link = document.createElement("a");
+        link.style.display = "none";
+        link.href = url;
+        link.setAttribute("download", e.fileName);
+        document.body.appendChild(link);
+        link.click();
+      }
+
+    } //for循环
+
+  }
+
+
 
 }
diff --git a/src/app/navigation/navigation.component.ts b/src/app/navigation/navigation.component.ts
index f4e90b8..54875c8 100644
--- a/src/app/navigation/navigation.component.ts
+++ b/src/app/navigation/navigation.component.ts
@@ -48,7 +48,7 @@ export class NavigationComponent implements OnInit {
     );
   }
   xxx(e){
-    this.sss.xxx = e
+
   }
 }