Extended zip4j memory encryption compressed package

Import java. io. byteArrayOutputStream; import java. io. fileOutputStream; import java. io. IOException; import net.lingala.zip 4j. exception. zipException; import net.lingala.zip 4j. io. zipOutputStream; import net.lingala.zip 4j. model. zipModel; import net.lingala.zip 4j. model. zipParameters; import net.lingala.zip 4j. util. zip4jConstants; import net.lingala.zip4j.zip. zipEngine; public class Test extends ZipEngine {priva Te ZipModel zipModel; public Test (ZipModel zipModel) throws ZipException {super (zipModel); this.zip Model = zipModel ;} /*** @ param args */public static void main (String [] args) {TestSendAttatch att = null; try {att = new TestSendAttatch (new ZipModel (); att. doZipEnc (); System. out. println ("successful");} catch (Exception e) {System. out. println ("failed"); e. printStackTrace () ;}} public void doZipEnc () {try {// Write the compressed stream to the memory ByteArrayOutputStream saos = new ByteArrayOutputStream (); // test FileOutputStream f = new FileOutputStream ("d: \ test1.zip", true) locally ); for (int I = 0; I <1; I ++) {String passwd = "111"; ZipParameters parameters = new ZipParameters (); parameters. setCompressionMethod (Zip4jConstants. COMP_DEFLATE); // The compression method parameters. setCompressionLevel (Zip4jConstants. DEFLATE_LEVEL_NORMAL); // compression level parameters. setS OurceExternalStream (true); parameters. setFileNameInZip ("aaaa _" + I + ". xls"); // if (! "". Equals (passwd) {parameters. setEncryptFiles (true); parameters. setEncryptionMethod (Zip4jConstants. ENC_METHOD_STANDARD); // The encryption method parameters. setPassword (passwd. toCharArray ();} addNewStreamToZipTmp (saos, parameters);} saos. writeTo (f); f. close (); saos. close (); // file size System. out. println ("size:" + (saos. toByteArray (). length/1024);} catch (Exception e) {e. printStackTrace () ;}} public void addNewS TreamToZipTmp (ByteArrayOutputStream baos, ZipParameters parameters) throws ZipException {ZipOutputStream outputStream = null; try {outputStream = new ZipOutputStream (baos, this.zip Model); if (zipModel. getEndCentralDirRecord () = null) {throw new ZipException ("invalid end of central directory record");} checkParameters (parameters); outputStream. putNextEntry (null, parameters); if (! Parameters. getFileNameInZip (). endsWith ("/")&&! Parameters. getFileNameInZip (). endsWith ("\") {for (int I = 0; I <10; I ++) {outputStream. write ("ccccccccccccccccccc ". getBytes (); outputStream. flush () ;}} outputStream. closeEntry (); outputStream. finish ();} catch (ZipException e) {throw e;} catch (Exception e) {throw new ZipException (e);} finally {if (outputStream! = Null) {try {outputStream. close ();} catch (IOException e) {}}} private void checkParameters (ZipParameters parameters) throws ZipException {if (parameters = null) {throw new ZipException ("cannot validate zip parameters");} if (parameters. getCompressionMethod ()! = Zip4jConstants. COMP_STORE) & parameters. getCompressionMethod ()! = Zip4jConstants. COMP_DEFLATE) {throw new ZipException ("unsupported compression type");} if (parameters. getCompressionMethod () = Zip4jConstants. COMP_DEFLATE) {if (parameters. getCompressionLevel () <0 & parameters. getCompressionLevel ()> 9) {throw new ZipException ("invalid compression level. compression level dor deflate shocould be in the range of 0-9 ") ;}} if (parameters. isEncryptFiles () {I F (parameters. getEncryptionMethod ()! = Zip4jConstants. ENC_METHOD_STANDARD & parameters. getEncryptionMethod ()! = Zip4jConstants. ENC_METHOD_AES) {throw new ZipException ("unsupported encryption method");} if (parameters. getPassword () = null | parameters. getPassword (). length <= 0) {throw new ZipException ("input password is empty or null") ;}} else {parameters. setAesKeyStrength (-1); parameters. setEncryptionMethod (-1 );}}}