Java 解压缩用 zlib deflate 压缩的字符串
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/33020765/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Java Decompress a string compressed with zlib deflate
提问by keocra
As the title says. How do you decompress a compressed string which was compressed with zlib deflate? What is the solid way of doing it with an explanation?
正如标题所说。如何解压缩用 zlib deflate 压缩的压缩字符串？用解释做这件事的可靠方法是什么？
回答by keocra
Try this - it is a minimal working example:
试试这个 - 这是一个最小的工作示例：
package zlib.example;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.util.Arrays;
import java.util.zip.Deflater;
import java.util.zip.DeflaterOutputStream;
import java.util.zip.InflaterInputStream;
/**
* Created by keocra on 08.10.15.
*/
public class Main {
private final static String inputStr = "Hello World!";
public static void main(String[] args) throws Exception {
System.out.println("Will zlib compress following string: " + inputStr);
// will compress "Hello World!"
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DeflaterOutputStream dos = new DeflaterOutputStream(baos);
dos.write(inputStr.getBytes());
dos.flush();
dos.close();
// at this moment baos.toByteArray() holds the compressed data of "Hello World!"
// will decompress compressed "Hello World!"
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
InflaterInputStream iis = new InflaterInputStream(bais);
String result = "";
byte[] buf = new byte[5];
int rlen = -1;
while ((rlen = iis.read(buf)) != -1) {
result += new String(Arrays.copyOf(buf, rlen));
}
// now result will contain "Hello World!"
System.out.println("Decompress result: " + result);
}
}
You should also easily be able to extend this example to compress/decompress files.
您还应该能够轻松地扩展此示例以压缩/解压缩文件。
Hope it helps ;-)
希望能帮助到你 ;-）
Further readings:
进一步阅读：
