Jas*_*son 25 java jar jar-signing
有没有办法取消签名java jar文件?我有一些我想在我的开发环境中使用的签名罐子,但我得到安全例外,所以我想取消签名这些罐子,我可以在以后准备部署时签名.
DwB*_*DwB 26
我不知道答案,但这就是我要做的:
mar*_*ans 15
要从jar文件中删除签名,请从中删除该META-INF目录.jar文件是一个zip文件,因此在Linux上你可以这样做:
zip -d file.jar 'META-INF/*.SF' 'META-INF/*.RSA'
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如果要保存许多jar文件,则以下命令会对当前目录及下面的每个jar文件执行此操作:
find . -name '*.jar' -exec zip -d '{}' 'META-INF/*.SF' 'META-INF/*.RSA' ';'
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我看到答案已被接受,但我认为这可能是有用的:
我已经做了一些事情(部分来自其他帖子)来自动完成任务.
附带没有任何保证,但它适用于我:)
删除签名信息时复制Jar文件.
注意,MANIFEST只留下MAIN部分!
使用javac JarUnsigner.java 创建的.class文件
使用java -cp <class dir> JarUnsigner <inJar> <outJar>
import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;
public class JarUnsigner {
private static final String MANIFEST = "META-INF/MANIFEST.MF";
public static void main(String[] args){
if (args.length!=2){
System.out.println("Arguments: <infile.jar> <outfile.jar>");
System.exit(1);
}
String infile = args[0];
String outfile = args[1];
if ((new File(outfile)).exists()){
System.out.println("Output file already exists:" + outfile);
System.exit(1);
}
try{
ZipFile zipFile = new ZipFile(infile);
final ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(outfile));
for (Enumeration e = zipFile.entries(); e.hasMoreElements();) {
ZipEntry entryIn = (ZipEntry) e.nextElement();
if (! exclude_file( entryIn.getName() ) ) {
/* copy the entry as-is */
zos.putNextEntry( new ZipEntry( entryIn.getName() ));
InputStream is = zipFile.getInputStream(entryIn);
byte[] buf = new byte[1024];
int len;
while ((len = (is.read(buf))) > 0) {
zos.write(buf, 0, len);
}
zos.closeEntry();
} else {
if (MANIFEST.equals(entryIn.getName())){
/* if MANIFEST, adjust the entry */
zos.putNextEntry(new ZipEntry(MANIFEST));
// manifest entries until first empty line. i.e. the 'MainAttributes' section
// (this method is used so to keep the formatting exactly the same)
InputStream mIS = zipFile.getInputStream(entryIn);
BufferedReader in = new BufferedReader(new InputStreamReader(mIS));
String line = in.readLine();
byte[] mNL = "\n".getBytes("UTF-8");
while( line != null && !line.trim().isEmpty() ) {
zos.write( line.getBytes("UTF-8"));
zos.write( mNL );
line = in.readLine();
}
zos.write( mNL );
zos.closeEntry();
}else{
/* else: Leave out the Signature files */
}
}
}
zos.close();
System.out.println("Successfully unsigned " + outfile);
}catch(IOException ex){
System.err.println("Error for file: " + infile);
ex.printStackTrace();
System.exit(1);
}
}
/**
* Exclude .SF signature file
* Exclude .RSA and DSA (signed version of .SF file)
* Exclude SIG- files (unknown sign types for signed .SF file)
* Exclude Manifest file
* @param filename
* @return
*/
public static boolean exclude_file(String filename){
return filename.equals("META-INF/MANIFEST.MF") ||
filename.startsWith("META-INF/SIG-") ||
filename.startsWith("META-INF/") && ( filename.endsWith(".SF") || filename.endsWith(".RSA") || filename.endsWith(".DSA") );
}
}
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在ANT中使用以取消一堆罐子,如下所示:
<apply executable="java" dest="${output-dir}">
<arg value="-cp" />
<arg value="${dev-dir}" />
<arg value="JarUnsigner" />
<srcfile/>
<targetfile/>
<fileset dir="${input-dir}" includes="*.jar"/>
<mapper type="glob" from="*.jar" to="*.jar"/> <!-- uses "dest"-->
</apply>
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