我要评论1.关于7z
首先在这里先介绍一下7z压缩软件，7z是一种主流的 压缩格式，它拥有极高的压缩比。在计算机科学中，7z是一种可以使用多种压缩算法进行数据压缩的档案格式。主要有以下特点：
- 来源且模块化的组件结构
- 最高的压缩比
- 强大的aes-256加密
- 可更改配置的压缩算法
- 支持操大文件
- 支持多线程压缩
- 具有多种压缩文件格式
2.解压缩实现代码
实现对文件的解压缩方法是通过cmd命令，调用7z程式通过cmd命令实现对文件进行解压和压缩的操作，具体实现代码如下：
- 压缩代码
压缩的cmd命令："7z a -tzip " + zippath + " " + filepath;
public executionresult compressfile(string filepath, string zippath)//运行dos命令
{
executionresult exeres = new executionresult();
exeres.status = true;
try
{
process process = new process();
process.startinfo.filename = "cmd.exe";
string message = "";
string command1 = "c:";
string command2 = @"cd\";
string command3 = @"cd c:\progra~1\7-zip";
string command4 = "";
command4 = "7z a -tzip " + zippath + " " + filepath;
process.startinfo.useshellexecute = false;
process.startinfo.redirectstandardinput = true;
process.startinfo.redirectstandardoutput = true;
process.startinfo.redirectstandarderror = true;
process.startinfo.createnowindow = true;
process.start();
process.standardinput.writeline(command1);
process.standardinput.writeline(command2);
process.standardinput.writeline(command3);
process.standardinput.writeline(command4);
process.standardinput.writeline("exit");
message = process.standardoutput.readtoend(); //要等压缩完成后才可以来抓取这个压缩文件
process.close();
if (!message.contains("everything is ok"))
{
exeres.status = false;
exeres.message = message;
}
else
{
exeres.anything = zippath;
}
}
catch (exception ex)
{
exeres.message = ex.message;
}
return exeres;
}
- 解压代码
解压的cmd命令："7z x -tzip " + zippath + " -o" + filepath + " -y";
public executionresult decompressfile( string zippath, string filepath)//运行dos命令
{
executionresult exeres = new executionresult();
exeres.status = true;
try
{
process process = new process();
process.startinfo.filename = "cmd.exe";
string message = "";
string command1 = "c:";
string command2 = @"cd\";
string command3 = @"cd c:\progra~1\7-zip";
string command4 = "";
command4 = "7z x -tzip " + zippath + " -o" + filepath + " -y";
process.startinfo.useshellexecute = false;
process.startinfo.redirectstandardinput = true;
process.startinfo.redirectstandardoutput = true;
process.startinfo.redirectstandarderror = true;
process.startinfo.createnowindow = true;
process.start();
process.standardinput.writeline(command1);
process.standardinput.writeline(command2);
process.standardinput.writeline(command3);
process.standardinput.writeline(command4);
process.standardinput.writeline("exit");
//process.waitforexit();
message = process.standardoutput.readtoend();//要等压缩完成后才可以来抓取这个压缩文件
process.close();
if (!message.contains("everything is ok"))
{
exeres.status = false;
exeres.message = message;
}
else
{
exeres.anything = filepath;
}
}
catch (exception ex)
{
exeres.message = ex.message;
}
return exeres;
}
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