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package com.zs.JiaJiE09; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStream; /**
* 使用装饰设计模式把数据取反进行加密解密
* Key方法为钥匙
*
* @author LZG
*
*/ public class JMOutputStream extends OutputStream{ /**
* 更多资料欢迎浏览凯哥学堂官网:http://kaige123.com
* @author 小沫
*/ private int key; private OutputStream output; public JMOutputStream(OutputStream output){ this.output=output;
} public void Key(int key){ this.key=key;
} public void write(int b) throws IOException {
output.write(~b+key);
} public void write(byte[] b, int off, int len) throws IOException { for (int i = off; i < len; i++) {
output.write(~b[i]+key);
}
} public void write(byte[] b) throws IOException { for (int i = 0; i < b.length; i++) {
output.write(~b[i]+key);
}
}
}
package com.zs.JiaJiE09; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; public class Test { /**
* 更多资料欢迎浏览凯哥学堂官网:http://kaige123.com
* @author 小沫
*/ public static void main(String[] args) throws IOException{
FileInputStream fin= new FileInputStream("e:/test/aa.txt");
JMOutputStream fout = new JMOutputStream(new FileOutputStream("d:/test/aa111.txt"));
fout.Key(1402); byte[] b = new byte[1024]; while(fin.available()!=0){ int len = fin.read(b);
fout.write(b, 0, len);
}
fin.close();
fout.close();
}
}
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