在批处理文件中使用 wget 下载 JDK 安装程序

问题描述

就像标题中所说的，我正在尝试使用以下命令以批处理文件形式下载 jdk 安装程序：

wget --verbose --show-progress --referer="https://download.oracle.com" --no-cookies --no-check-certificate --header "Cookie: oraclelicense=accept-securebackup-cookie" "https://download.oracle.com/otn-pub/java/jdk/15.0.1%2B9/51f4f36ad4ef43e39d0dfdbaf6549e32/jdk-15.0.1_windows-x64_bin.exe"

我从批处理文件中收到此错误：

--2021-01-05 15:12:30--  https://download.oracle.com/otn-pub/java/jdk/15.0.1B9/51f4f36ad4ef43e39d0dfdbaf6549e32/jdk-15.0.1_windows-x64_bin.exe
Resolving download.oracle.com (download.oracle.com)... 23.212.156.99
Connecting to download.oracle.com (download.oracle.com)|23.212.156.99|:443... connected.
HTTP request sent,awaiting response... 302 Moved Temporarily
Location: https://edelivery.oracle.com/otn-pub/java/jdk/15.0.1B9/51f4f36ad4ef43e39d0dfdbaf6549e32/jdk-15.0.1_windows-x64_bin.exe [following]
--2021-01-05 15:12:30--  https://edelivery.oracle.com/otn-pub/java/jdk/15.0.1B9/51f4f36ad4ef43e39d0dfdbaf6549e32/jdk-15.0.1_windows-x64_bin.exe
Resolving edelivery.oracle.com (edelivery.oracle.com)... 2a02:26f0:2b00:3b4::366,2a02:26f0:2b00:390::366,104.124.198.35
Connecting to edelivery.oracle.com (edelivery.oracle.com)|2a02:26f0:2b00:3b4::366|:443... connected.
HTTP request sent,awaiting response... 302 Moved Temporarily
Location: https://download.oracle.com/otn-pub/java/jdk/15.0.1B9/51f4f36ad4ef43e39d0dfdbaf6549e32/jdk-15.0.1_windows-x64_bin.exe?AuthParam=1609856056_4a223d45cbb97da535473401552470f5 [following]
--2021-01-05 15:12:31--  https://download.oracle.com/otn-pub/java/jdk/15.0.1B9/51f4f36ad4ef43e39d0dfdbaf6549e32/jdk-15.0.1_windows-x64_bin.exe?AuthParam=1609856056_4a223d45cbb97da535473401552470f5
Connecting to download.oracle.com (download.oracle.com)|23.212.156.99|:443... connected.
HTTP request sent,awaiting response... 404 Not Found
2021-01-05 15:12:32 ERROR 404: Not Found.

但是

当我直接在 CLI 中使用此命令行（更改 wget.exe 文件所在的 CD）时，它会正确下载安装程序，如下所示：

--2021-01-05 15:19:43--  https://download.oracle.com/otn-pub/java/jdk/15.0.1%2B9/51f4f36ad4ef43e39d0dfdbaf6549e32/jdk-15.0.1_windows-x64_bin.exe
Resolving download.oracle.com (download.oracle.com)... 23.212.156.99
Connecting to download.oracle.com (download.oracle.com)|23.212.156.99|:443... connected.
HTTP request sent,awaiting response... 302 Moved Temporarily
Location: https://edelivery.oracle.com/otn-pub/java/jdk/15.0.1%2B9/51f4f36ad4ef43e39d0dfdbaf6549e32/jdk-15.0.1_windows-x64_bin.exe [following]
--2021-01-05 15:19:43--  https://edelivery.oracle.com/otn-pub/java/jdk/15.0.1%2B9/51f4f36ad4ef43e39d0dfdbaf6549e32/jdk-15.0.1_windows-x64_bin.exe
Resolving edelivery.oracle.com (edelivery.oracle.com)... 2a02:26f0:2b00:390::366,2a02:26f0:2b00:3b4::366,104.126.235.187
Connecting to edelivery.oracle.com (edelivery.oracle.com)|2a02:26f0:2b00:390::366|:443... connected.
HTTP request sent,awaiting response... 302 Moved Temporarily
Location: https://download.oracle.com/otn-pub/java/jdk/15.0.1+9/51f4f36ad4ef43e39d0dfdbaf6549e32/jdk-15.0.1_windows-x64_bin.exe?AuthParam=1609856489_c1f5f2310bf675762561de7d78160532 [following]
--2021-01-05 15:19:44--  https://download.oracle.com/otn-pub/java/jdk/15.0.1+9/51f4f36ad4ef43e39d0dfdbaf6549e32/jdk-15.0.1_windows-x64_bin.exe?AuthParam=1609856489_c1f5f2310bf675762561de7d78160532
Connecting to download.oracle.com (download.oracle.com)|23.212.156.99|:443... connected.
HTTP request sent,awaiting response... 200 OK
Length: 167452312 (160M) [application/octet-stream]
Saving to: 'jdk-15.0.1_windows-x64_bin.exe'

我真的需要用这个命令编写一个脚本。

如果有人知道批处理文件和 CLI 之间可能出了什么问题，我将非常感谢您的帮助。

解决方法

比较输出中的 URL。
CLI URL 包含一个百分号 %2B 作为 URL 编码字母的一部分。但是批处理脚本输出缺少这个百分号，因此导致错误的 URL。

CLI 输出 15.0.1%2B9
批量输出15.0.1B9

由于批处理使用百分比符号 % 来标识变量，因此如果您想按字面意思使用它，则必须对其进行转义。

因此，请尝试在批处理脚本 %% 中使用两个百分号。这应该会导致您的网址中出现（正确的）单个 %。

batch-file command-line-interface eclipse java java wget wget