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我写了一些Javascript代码。 压缩与Base64和放气javascript deflate和java.util.zip.Deflater有什么区别
function base64 (str) {
return new Buffer(str).toString("base64");
}
function deflate (str) {
return RawDeflate.deflate(str);
}
function encode (str) {
return base64(deflate(str));
}
var str = "hello, world";
console.log("Test Encode");
console.log(encode(str));
我改装后的“你好,世界”到2f8d48710d6e4229b032397b2492f0c2
,我想在java中
我把海峡的文件进行解压此字符串(2f8d48710d6e4229b032397b2492f0c2)然后:
public static String decompress1951(final String theFilePath) {
byte[] buffer = null;
try {
String ret = "";
System.out.println("can come to ret");
InputStream in = new InflaterInputStream(new Base64InputStream(new FileInputStream(theFilePath)), new Inflater(true));
System.out.println("can come to in");
while (in.available() != 0) {
buffer = new byte[20480];
*****line 64 excep happen int len = in.read(buffer, 0, 20480);
if (len <=0) {
break;
}
ret = ret + new String(buffer, 0, len);
}
in.close();
return ret;
} catch (IOException e) {
System.out.println("Has IOException");
System.out.println(e.getMessage());
e.printStackTrace();
}
return "";
}
但我有一个例外:
java.util.zip.ZipException: invalid stored block lengths
at java.util.zip.InflaterInputStream.read(Unknown Source)
at com.cnzz.mobile.datacollector.DecompressDeflate.decompress1951(DecompressDeflate.java:64)
at com.cnzz.mobile.datacollector.DecompressDeflate.main(DecompressDeflate.java:128)
代码正确 关键是InflaterInputStream的第二个参数 新的Inflater(true)。如果没有这个参数,代码可以工作,但不是纯粹的defalter。 也许与 RFC1950 zlib:[基本链接](http://www.ietf.org/rfc/rfc1950.txt)的区别。 (不含) RFC 1951 deflate:[基本链接](http://www.ietf.org/rfc/rfc1951.txt)。 (与新的Inflater(真)) 而“hello,world”的转换字符串不是2f8d48710d6e4229b032397b2492f0c2。这就是为什么我无法解决它 – littletiger 2012-02-01 11:27:59