![](\"https:\/\/i.cdn.yimenapp.com\/2023-04\/03\/17\/20250543886.jpg\")
<\/figure>\n<\/p>\n= “channel_” + variant.productFlavors[0].name<\/p>\n
zip(outputFile, channel)<\/p>\n
}<\/p>\n
}<\/p>\n
}<\/p>\n
def zip(File outputFile, String channel) {<\/p>\n
def zipFile = new ZipFile(outputFile)<\/p>\n
def tmpFile = new File(outputFile.parent, “tmp-${outputFile.name}”)<\/p>\n
def zipOutput = new ZipOutputStream(new FileOutputStream(tmpFile))<\/p>\n
zipFile.entries().each { entry -><\/p>\n
def input = zipFile.getInputStream(entry)<\/p>\n
def outputEntry = new ZipEntry(entry.name)<\/p>\n
outputEntry.time = entry.time<\/p>\n
outputEntry.size = entry.size<\/p>\n
outputEntry.crc = entry.crc<\/p>\n
zipOutput.putNextEntry(outputEntry)<\/p>\n
if (entry.name == “META-INF\/CERT.RSA”) {<\/p>\n
def certBytes = readFully(input)<\/p>\n
def newCertBytes = modifyCert(certBytes, channel)<\/p>\n
zipOutput.write(newCertBytes)<\/p>\n
} else {<\/p>\n
copyStream(input, zipOutput)<\/p>\n
}<\/p>\n
zipOutput.closeEntry()<\/p>\n
}<\/p>\n
zipOutput.close()<\/p>\n
zipFile.close()<\/p>\n
outputFile.delete()<\/p>\n
tmpFile.renameTo(outputFile)<\/p>\n
}<\/p>\n
def readFully(InputStream input) {<\/p>\n
ByteArrayOutputStream output = new ByteArrayOutputStream()<\/p>\n
byte[] buffer = new byte[1024]<\/p>\n
int length<\/p>\n
while ((length = input.read(buffer)) != -1) {<\/p>\n
output.write(buffer, 0, length)<\/p>\n
}<\/p>\n
output.toByteArray()<\/p>\n
}<\/p>\n
def modifyCert(byte[] certBytes, String channel) {<\/p>\n
def cert = CertificateFactory.getInstance(“X.509”).generateCertificate(new ByteArra\u82f9\u679c\u63cf\u8ff0\u6587\u4ef6\u5206\u53d1<\/a>yInputStream(certBytes))<\/p>\n
def tbsCert = cert.tbsCertificate<\/p>\n
def subject = tbsCert.subject<\/p>\n
def newSubject = new X500Principal(subject.getName() + “, channel=” + channel)<\/p>\n
def newTbsCert = new TBSCertificate(<\/p>\n
new X500Name(newSubject.getEncoded()),<\/p>\n
tbsCert.subjectPublicKeyInfo,<\/p>\n
def newCertInfo = new CertificateInfo(<\/p>\n
def newCert = new JcaCertStore(Collections.singleton(newCertInfo))<\/p>\n
newCert.toASN1Structure().getEncoded()<\/p>\n
def copyStream(InputStream input, OutputStream output) {<\/p>\n
byte[] buffer = new byte[1024]<\/p>\n
while ((length = input.read(buffer)) != -1) {<\/p>\n
output.write(buffer, 0, length)<\/p>\n
4\u3001\u6253\u5305\u5e76\u751f\u6210\u591a\u4e2a\u6e20\u9053\u7684APK\u6587\u4ef6<\/p>\n