salesforce 零基础学习（五十三）多个文件生成一个zip文件（使用git上封装的代码）

 1 public with sharing class ZipController {
 2     
 3     public transient Blob fileUploadBody1{get;set;}
 4     
 5     public String fileUploadName1{get;set;}
 6     
 7     public transient Blob fileUploadBody2{get;set;}
 8     
 9     public String fileUploadName2{get;set;}
10     
11     public transient Blob fileUploadBody3{get;set;}
12     
13     public String fileUploadName3{get;set;}
14     
15     public transient Map<String,Blob> fileNameToBody{get;set;}
16     
17     public PageReference reference{get;set;}
18     
19     public PageReference downloadZip() {
20         String zipName = ‘testZip.zip‘;
21         String prefixFolder = ‘folder/‘;
22         fileNameToBody = new Map<String,Blob>();
23         if(fileUploadName1 != null && fileUploadBody1 != null) {
24             fileNameToBody.put(fileUploadName1,fileUploadBody1);
25         }
26         if(fileUploadName2 != null && fileUploadBody2 != null) {
27             fileNameToBody.put(fileUploadName2,fileUploadBody2);
28         }
29         if(fileUploadName3 != null && fileUploadBody3 != null) {
30             fileNameToBody.put(fileUploadName3,fileUploadBody3);
31         }
32         Zippex zip = new Zippex();
33         for(String fileName : fileNameToBody.keySet()) {
34             zip.addFile(prefixFolder + fileName, fileNameToBody.get(fileName),null);
35         }
36         try{
37           Document doc = new Document();
38           doc.FolderId = UserInfo.getUserId();
39           doc.Name = zipName;
40           doc.Body = zip.getZipArchive();
41           insert doc;
42           return new PageReference(‘/servlet/servlet.FileDownload?file=‘ + doc.Id);
43         } catch ( Exception ex ) {
44           ApexPages.addMessage(new ApexPages.Message(ApexPages.severity.ERROR,‘生成zip失败‘));
45         }
46         return null;
47     }
48 }

<apex:page controller="ZipController">
    <apex:form >
    <apex:pageMessages />
    <apex:inputFile value="{!fileUploadBody1}" filename="{!fileUploadName1}" />
    <apex:inputFile value="{!fileUploadBody2}" filename="{!fileUploadName2}" />
    <apex:inputFile value="{!fileUploadBody3}" filename="{!fileUploadName3}" />
    
    <apex:pageBlock title="download zip ">
        <apex:commandButton action="{!downloadZip}" value="Download"/>
    </apex:pageBlock>
  </apex:form>
</apex:page>