How to execute the ldapsearch command by java class in linux os?

Question

hi,all
I want to query the users by ldapsearch command. I call the command in my java class. In windows, It work well. But in linux , there haven't any result. My test program is following:
===============
import java.util.*;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.LineNumberReader;
public class test{
public static Vector queryAllUser(){
try{
Vector v=new Vector();
String cmdquery="ldapsearch -h localhost -b\"dc=metasphere,dc=com\" \"uid=*\" uid ";
//String cmdquery="ls -la";
Process process=Runtime.getRuntime().exec(cmdquery);
System.out.println("cmdquery:"+cmdquery);
InputStreamReader ir=new InputStreamReader(process.getInputStream());
LineNumberReader input = new LineNumberReader (ir);
System.out.println("input="+input);
String line;
while ((line = input.readLine ()) != null){
System.out.println("Line:"+line);
if(line.startsWith("uid")){
String temp=line.substring(line.indexOf(":")+1,line.length());
v.add(temp);
return v;
}catch(Exception e){
e.printStackTrace();
System.out.println("runtime error:"+e.getMessage());
return null;
public static void main(String argv[]){
Vector v=queryAllUser();
for(int i=0;i<v.size();i++){
System.out.println((String)v.get(i));
================
In fact, when I execute the command: ldapsearch -h localhost -b"dc=metasphere,dc=com" "uid=*" uid
in linux prompt, the screen show the results:
version: 1
dn: uid=toppymgt,dc=metasphere,dc=com
uid: toppymgt
dn: uid=qutao,dc=metasphere,dc=com
uid: qutao
dn: uid=zz,dc=metasphere,dc=com
uid: zz
dn: uid=z,dc=metasphere,dc=com
uid: z
dn: uid=admin,dc=metasphere,dc=com
uid: admin
dn: uid=alan,dc=metasphere,dc=com
uid: alan
dn: uid=misssixty,dc=metasphere,dc=com
uid: misssixty
dn: uid=channelv,dc=metasphere,dc=com
uid: channelv
What's reason? Please help me. Thx.

Answer 1

If there have a bugs in Linux OS. Please help me!