Question

服务器正在发送jar文件，我想将其保存在特定目录中。我的HttpURLConnection只读取文件的内容

public static String update(String url, String version) throws MalformedURLException, IOException {
    HttpURLConnection con = (HttpURLConnection) new URL(url).openConnection();
        
    return readResponse(con.getInputStream());
}

private static String readResponse(InputStream in){
    BufferedReader br = new BufferedReader(new InputStreamReader((in)));
    StringBuilder sb = new StringBuilder();
    String output;
    while ((output = br.readLine()) != null) {
        sb.append(output);
    }
    return sb.toString();
}

Answer 1

为什么要将其解析为字符串？也许尝试（https://www.baeldung.com/java-download-file）

A = 1,2,3,4,5,6,8
B = 1,2,3,4,5,6,8

res = set()
for a in A:
    for b in B:
        if a * b == 24:
            if {a, b} not in res:
                print(a, b, a + b)
                res.add(frozenset((a, b)))

有没有一种方法可以通过httpurlconnection下载.jar文件？

1 个答案: