英文:
Fetch zip file from the web and decompress it in Go
问题
你可以使用Go语言的net/http包来从Web上获取zip压缩文件。你可以使用http.Get函数来发送GET请求并获取响应。然后，你可以使用ioutil.ReadAll函数来读取响应的内容。
获取到zip文件的内容后，你可以将其传递给zip.NewReader函数来创建一个*zip.Reader对象。然后，你可以使用Next方法遍历zip文件中的每个文件，并使用Open方法打开每个文件。
以下是一个示例代码：
package mainimport ("archive/zip""fmt""io/ioutil""net/http""os")func main() {// 发送GET请求并获取响应resp, err := http.Get("http://example.com/archive.zip")if err != nil {fmt.Println("Error fetching zip file:", err)return}defer resp.Body.Close()// 读取响应的内容zipData, err := ioutil.ReadAll(resp.Body)if err != nil {fmt.Println("Error reading zip file:", err)return}// 创建zip.Reader对象zipReader, err := zip.NewReader(bytes.NewReader(zipData), int64(len(zipData)))if err != nil {fmt.Println("Error creating zip reader:", err)return}// 遍历zip文件中的每个文件for _, file := range zipReader.File {// 打开文件fileReader, err := file.Open()if err != nil {fmt.Println("Error opening file:", err)continue}defer fileReader.Close()// 读取文件内容fileData, err := ioutil.ReadAll(fileReader)if err != nil {fmt.Println("Error reading file:", err)continue}// 在这里处理文件内容fmt.Println("File contents:", string(fileData))}}
请注意，上述代码中的URL是示例URL，你需要将其替换为你要获取的zip文件的实际URL。另外，你还可以根据需要修改代码来处理zip文件中的文件内容。
英文:
How can I fetch a zip archived file from the Web and decompress it in Go? It looks like archive/zip package provides a set of tools to parse the zipped file. However, in order to decompress the zipped file, I have to use zip.OpenReader, which takes the filename as string.
So how can I fetch the zipped file from the Web, and put it into the above function as string...? Or maybe do I have to first fetch the file and put it in one of the directories of my filesystem, and then read it?
答案1
得分: 5
似乎要解压缩zip文件，需要能够随意定位到文件的位置。这意味着，除非你想做一些高级操作，否则它要么是一个本地文件，要么完全在内存中。
假设你已经下载了zip文件，并且将其保存在[]byte中，你可以按照以下方式进行操作：
zipReader := zip.NewReader(bytes.NewReader(zipData), len(zipData))
英文:
It appears that in order to decompress a zip, you need to be able to seek to arbitrary locations. This means that unless you want to do something fancy, it either needs to be a local file or be completely in memory.
Assuming you have downloaded the zip and have it in a []byte, you want to do something like:
zipReader := zip.NewReader(bytes.NewReader(zipData), len(zipData))
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