java和C#的压缩和解压缩

由于项目需求，需要在C#中压缩，然后在java里解压缩，或者倒过来，在Java里压缩，C#里解压缩，以下代码经测试验证通过。

关键技术点和体会:

压缩的结果采用Base64编码，方便在Java端或者C#端打印出来调试，也方便在不同的应用间传输（如webservice），缺点是比转码前体积变大了约35%
字符串采用UTF-8编码获得byte数组，保证两端通用，如果应用对编码有要求，两端同时改为其他编码方式也可以
从Java和C#的代码看，两者代码上有细微差别，但是思路方面两者基本是一样的
另外一个备忘，Java里边，Stream类要及时close，不然输出的结果是不完整的，即使调用了flush
C#的using真好用，Java的类似语言特性在1.7才支持...
Java，用Session Bean建立了一个简单的WebService，提供一个简单的调用SayHello，然后C#里建立一个winform应用，添加服务引用，引用Java的webservice WSDL。

具体过程不多说，代码如下：

Java代码：

[javascript]
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;

import javax.ejb.Stateless;
import javax.jws.WebMethod;
import javax.jws.WebService;

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

@Stateless
@WebService
public class TestWebService {

    @WebMethod
    public String SayHello(String name) throws Exception {

        String t = uncompress(name);
        return compress("解压：" + t);

    }

    @WebMethod(exclude = true)
    public static String compress(String str) throws IOException {
        if (str == null || str.length() == 0) {
            return "";
        }

        byte[] tArray;
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        GZIPOutputStream gzip = new GZIPOutputStream(out);
        try {
            gzip.write(str.getBytes("UTF-8"));
            gzip.flush();
        } finally {
            gzip.close();
        }

        tArray = out.toByteArray();
        out.close();

        BASE64Encoder tBase64Encoder = new BASE64Encoder();
        return tBase64Encoder.encode(tArray);
    }

    @WebMethod(exclude = true)
    public static String uncompress(String str) throws IOException {
        if (str == null || str.length() == 0) {
            return "";
        }

        BASE64Decoder tBase64Decoder = new BASE64Decoder();
        byte[] t = tBase64Decoder.decodeBuffer(str);

        ByteArrayOutputStream out = new ByteArrayOutputStream();
        ByteArrayInputStream in = new ByteArrayInputStream(t);
        GZIPInputStream gunzip = new GZIPInputStream(in);
        try {
            byte[] buffer = new byte[256];
            int n;
            while ((n = gunzip.read(buffer)) >= 0) {
                out.write(buffer, 0, n);
            }
        }finally{
            gunzip.close();
        }
        in.close();
        out.close();

        return out.toString("UTF-8");
    }

}

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;

import javax.ejb.Stateless;
import javax.jws.WebMethod;
import javax.jws.WebService;

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

@Stateless
@WebService
public class TestWebService {

@WebMethod
public String SayHello(String name) throws Exception {

String t = uncompress(name);
return compress("解压：" + t);

}

@WebMethod(exclude = true)
public static String compress(String str) throws IOException {
  if (str == null || str.length() == 0) {
   return "";
  }

  byte[] tArray;
  ByteArrayOutputStream out = new ByteArrayOutputStream();
  GZIPOutputStream gzip = new GZIPOutputStream(out);
  try {
   gzip.write(str.getBytes("UTF-8"));
   gzip.flush();
  } finally {
   gzip.close();
  }

  tArray = out.toByteArray();
  out.close();

  BASE64Encoder tBase64Encoder = new BASE64Encoder();
  return tBase64Encoder.encode(tArray);
}

@WebMethod(exclude = true)
public static String uncompress(String str) throws IOException {
  if (str == null || str.length() == 0) {
   return "";
  }

BASE64Decoder tBase64Decoder = new BASE64Decoder();
byte[] t = tBase64Decoder.decodeBuffer(str);

  ByteArrayOutputStream out = new ByteArrayOutputStream();
  ByteArrayInputStream in = new ByteArrayInputStream(t);
  GZIPInputStream gunzip = new GZIPInputStream(in);
  try {
   byte[] buffer = new byte[256];
   int n;

补充：软件开发 , C# ,