未找到 Java 9 Zip End 标头异常
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Java 9 Zip End Header Not Found Exception
提问by gansub
Edit for Googlers: this turned out to be caused by using an out-of-date beta release of Java 9.
为 Google 员工编辑：结果证明这是由使用过时的 Java 9 测试版引起的。
I am trying to batch download zip files from this URL using java - SRTM filesand it requires a username/password to download and I am using the following java code and it gives me the following exception
我正在尝试使用 java - SRTM文件从这个 URL 批量下载 zip 文件，它需要用户名/密码才能下载，我正在使用以下 java 代码，它给了我以下异常
java.util.zip.ZipException: zip END header not found
at java.util.zip.ZipFile$Source.zerror(java.base@9-internal/ZipFile.java:1210)
at java.util.zip.ZipFile$Source.findEND(java.base@9-internal/ZipFile.java:1119)
at java.util.zip.ZipFile$Source.initCEN(java.base@9-internal/ZipFile.java:1126)
at java.util.zip.ZipFile$Source.<init>(java.base@9-internal/ZipFile.java:963)
at java.util.zip.ZipFile$Source.get(java.base@9-internal/ZipFile.java:933)
at java.util.zip.ZipFile.<init>(java.base@9-internal/ZipFile.java:213)
at java.util.zip.ZipFile.<init>(java.base@9-internal/ZipFile.java:145)
at java.util.zip.ZipFile.<init>(java.base@9-internal/ZipFile.java:159)
at toposwapper.rules.ZipFileDownloadAction.execute(ZipFileDownloadAction.java:29)
This is my version of java
这是我的java版本
java openjdk version "9-internal"
OpenJDK Runtime Environment (build 9-internal+0-2016-04-14-195246.buildd.src)
OpenJDK 64-Bit Server VM (build 9-internal+0-2016-04-14-195246.buildd.src, mixed mode)
This is the code that I am using to download -
这是我用来下载的代码 -
URL url1 = null;
URLConnection conn = null;
InputStream inputs = null;
FileOutputStream out = null;
try
{
url1 = new URL(url);
conn = url1.openConnection();
conn.setDoInput(true);
conn.setDoOutput(false);
conn.setRequestProperty("file-name", output.getName());
conn.setRequestProperty("content-type","application/zip");
String userpass = this.username + ":" + this.password;
String basicAuth = "Basic " + javax.xml.bind.DatatypeConverter.printBase64Binary(userpass.getBytes());
conn.setRequestProperty("Authorization",basicAuth);
}
catch (MalformedURLException ex) {
Logger.getLogger(SrtmDownloadManager.class.getName()).log(Level.SEVERE, "", ex);
throw new TopoSwapperException(ex.getMessage());
}
catch (IOException ioe)
{
Logger.getLogger(SrtmDownloadManager.class.getName()).log(Level.SEVERE, "", ioe);
throw new TopoSwapperException(ioe.getMessage());
}
try
{
inputs = conn.getInputStream();
out = new FileOutputStream(output);
byte[] b = new byte[1024];
int count;
while ((count = inputs.read(b)) > -1)
{
out.write(b,0,count);
}
out.flush();
inputs.close();
out.close();
}
catch (FileNotFoundException ex)
{
throw new TopoSwapperException(ex.getMessage());
}
catch (IOException ex)
{
Logger.getLogger(SrtmDownloadManager.class.getName()).log(Level.SEVERE, "", ex);
throw new TopoSwapperException(ex.getMessage());
}
finally
{
close(inputs);
close(out);
}
Can somebody help me why this fails ?
有人可以帮助我为什么会失败吗？
采纳答案by Adam Michalik
There are a few (already closed) bugs for Java 9 that mention this exception (eg. JDK-8170276, JDK-8172872). Since Java 9 is still in beta and you're using a version from over a year ago (2016-04-14 vs. July 2017 of the time of writing) you should upgrade to the newest Java 9 EA release or stick to Java 8 until a public release of Java 9.
Java 9 有一些（已经关闭的）错误提到了这个异常（例如 JDK-8170276、JDK-8172872）。由于 Java 9 仍处于测试阶段，并且您使用的是一年多以前的版本（2016 年 4 月 14 日与撰写本文时的 2017 年 7 月），您应该升级到最新的 Java 9 EA 版本或坚持使用 Java 8直到 Java 9 公开发布。
