Java Execution Shell command

Package com.pms.util;

Import Java.io.File;
Import java.io.IOException;
Import Java.io.InputStream;
Import java.util.ArrayList;
Import java.util.List;

Import Org.apache.commons.logging.Log;
Import Org.apache.commons.logging.LogFactory;

/**
* Execute Linux command
*
* @author Mars
*
*/
public class Executelinux {

log4j Instance Name
Private static final Log log = Logfactory.getlog (executelinux.class
. Getcanonicalname ());

/**
* Execute the Linux command and output the results
*
* @param cmd
* @throws RuntimeException
* @throws IOException
*/
public static void Execute (string[] cmd) throws Exception {
InputStream errorstream = null;
InputStream inputstream = null;
Process PS = null;
try {
string[] cmd = new string[] {"/bin/sh", "-C", "LS"};
PS = Runtime.getruntime (). exec (CMD);
Log.debug ("Start executing local thread");

Errorstream = Ps.geterrorstream (); Stream of correct results
InputStream = Ps.getinputstream (); Stream of error results
Printerror (Errorstream);
Printinfo (InputStream);

} catch (Exception e) {
Log.error ("Execute Linux Command error ...", e);
throw new Exception ("Execute Linux Command error ...");
}finally{
if (errorstream! = null) {
Errorstream.close ();
}
if (InputStream! = null) {
Inputstream.close ();
}

Ps.destroy ();
}

}

/**
* Print correct information
* @param errorstream
* @throws IOException
*/
private static void Printinfo (InputStream inputstream) throws ioexception{

StringBuffer sb = new StringBuffer ();
int line=0;
while (line = Inputstream.read (new byte[1024]))! =-1) {
Sb.append ((char) line). Append ("\ n");
}
String result = Sb.tostring ();
System.out.println ("# # # #正确信息 ######:" +result);
Log.debug ("# # # #正确信息LOG ######:" +result);
}

/**
* Print error message
* @param errorstream
* @throws IOException
*/
private static void Printerror (InputStream errorstream) throws ioexception{

StringBuffer sb = new StringBuffer ();
int line=0;
while (line = Errorstream.read (new byte[1024]))! =-1) {
Sb.append ((char) line). Append ("\ n");
}
String result = Sb.tostring ();
System.out.println ("# # # #错误信息 ######:" +result);
Log.debug ("# # # #错误信息LOG ######:" +result);
}

/**
* Get WGRIB2-cut Linux commands to cut grib2 into binary bin files
* @param pathName file path name
* @param filename
* @param savepath the path name to save to
* @param lists condition set (must not be empty because the foreground check is not empty when the database is saved from the database)
* @return
*/
public static string[] Getlinuxcommand (String pathName, String fileName, String savepath, list<string> lists) {

"/bin/sh", "-C",
string[] cmd = new string[3];
Cmd[0] = "/bin/sh";
CMD[1] = "-C";

StringBuffer CONDITION_BF = new StringBuffer ();
for (String str:lists) {
Condition_bf.append (str+ "mb|");
}
Cut off the last ' | ' symbol
String condition_str = condition_bf.tostring (). substring (0, condition_bf.tostring (). Length ()-1);
Wgrib2-s Z_nafp_c_babj_20120508000000_p_cnpc-t639-gmfs-hnehe-00300.grib2 | Grep-e "(\bhgt:20\b) | (\bhgt:30\b) "| Wgrib2-i Z_nafp_c_babj_20120508000000_p_cnpc-t639-gmfs-hnehe-00300.grib2-no_header-bin Data5.bin
StringBuffer bf = new StringBuffer ();
Bf.append ("Wgrib2-s");
Bf.append (pathname+ "/" +filename);
Bf.append ("| Grep-e ");
Bf.append ("\" "+condition_str+" \ "");
Bf.append ("| Wgrib2-i ");
Bf.append (pathname+ "/" +filename);
Bf.append ("-no_header-bin");
String newName = filename.substring (0, Filename.indexof (".")); Remove the file name of the. Grib2
Bf.append (savepath+ "/" +newname+ ". Bin");
CMD[2] = bf.tostring ();

return cmd;
}

public static void Main (string[] args) {
String str = "NEW.GRIB2";
System.out.println (str.substring (0, Str.indexof (".")));
//
String pathName = "/home/ftp/cwfs";
String fileName = "New_003.grib2";
String Savepath = "/home/ftp/cwfs";
//
list<string> lists = new arraylist<string> ();
Lists.add ("het:20");
string[] Command = Getlinuxcommand (PathName, FileName, Savepath, lists);
//
System.out.println (command[2]);

File File = new file ("E:temp");
System.out.println (File.getparent ());
file[] Listfiles = File.listfiles ();
if (listfiles! = null && listfiles.length > 0) {
for (File f:listfiles) {
F.delete ();
//   }
//  }

file[] list = File.listfiles ();
for (File s:list) {
System.out.println (S.getpath ());
//  }

}
}

Java Execution Shell command