設計一套SAP監控系統
http://blog.csdn.net/bayaci/archive/2009/10/13/4666456.aspx
顯示系統df（linux ）/ bdf (hpunix)的資訊
執行代碼，擷取諸如
bdf /usr指令後的資訊：
DiskInfo diskInfo = new DiskInfo();
diskInfo.info(directory);
long used = diskInfo.getUsed();
long free = diskInfo.getAvailable();
long kbyte = diskInfo.getKbyte();
代碼如下：
import java.io.IOException;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.StringTokenizer;
public class DiskInfo {
static final String NL = System.getProperty( "line.separator" );
private static long getLong( String value ) throws NumberFormatException {
try {
return Long.parseLong( value );
}
catch( NumberFormatException nfe ) {
throw new NumberFormatException( "On value "+value+": "+nfe.getMessage() );
}
}
private String fileSystem ;
private String mounted ;
private long used = 0L;
private long kbyte = 0L;
private long available = 0L;
public void info(String directory ) throws IOException {
InputStream stream = null;
// Connection connection = null; // Database Connection Object
// to handle standard outputs
final byte[] buf = new byte[1024];
String[] strings;
int i;
int size;
// note OS name
final String osName = System.getProperty( "os.name" );
// System.out.println( "system is " + osName);
if( "Linux".equals( osName ) ) {
final Process p = Runtime.getRuntime().exec( "df " + directory );
stream = p.getInputStream();
final int count = stream.read( buf, 0, buf.length );
String delim = NL;
final StringTokenizer st = new StringTokenizer( new String( buf, 0, count ), delim,
true );
int lineNum = 1;
int field = 0;
while( st.hasMoreTokens() ) {
final String token = st.nextToken(delim);
//System.out.println( "token is " + token);
if( lineNum < 2 ) {
if( NL.equals( token ) ) {
lineNum++;
if( lineNum == 2 ) {
delim = " " + NL;
}
}
}// else
if( !" ".equals( token ) ) {
field++;
if( field == 0 ) {
setFileSystem ( token );
} else
if( field == 2 ) {
setUsed ( getLong( token ));
} else
if( field == 3 ) {
setAvailable( getLong( token ));
}
}
}
}
else
if( "HP-UX".equals( osName ) ) {
final Process p = Runtime.getRuntime().exec( "bdf " + directory );
stream = p.getInputStream();
final int count = stream.read( buf, 0, buf.length );
String delim = NL;
final StringTokenizer st = new StringTokenizer( new String( buf, 0, count ), delim,
true );
int lineNum = 1;
int field = 0;
while( st.hasMoreTokens() ) {
final String token = st.nextToken(delim);
if( lineNum < 2 ) {
if( NL.equals( token ) ) {
lineNum++;
if( lineNum == 2 ) {
delim = " " + NL;
}
}
} else
if( !" ".equals( token ) ) {
field++;
if( field == 0 ) {
setFileSystem ( token );
} else
if( field == 3 ) {
setUsed ( getLong( token ));
} else
if( field == 4 ) {
setAvailable( getLong( token ));
}
}
}
} else {
throw new RuntimeException( "Unknown OS name: " + osName + " to implement..." );
}
setKbyte ( getUsed() + getAvailable());
setMounted(directory );
}
private void setUsed(long used) {
this.used = used;
}
public long getUsed() {
return used;
}
private void setKbyte(long kbyte) {
this.kbyte = kbyte;
}
public long getKbyte() {
return kbyte;
}
private void setAvailable(long available) {
this.available = available;
}
public long getAvailable() {
return available;
}
private void setFileSystem(String fileSystem) {
this.fileSystem = fileSystem;
}
public String getFileSystem() {
return fileSystem;
}
private void setMounted(String mounted) {
this.mounted = mounted;
}
public String getMounted() {
return mounted;
}
}
