由于是基于web开发，所以自己想写一个像tomcat管理数据库连接池一样的东东。
大体思路是这样的，由LDAPConectionDataFactory来创建LDAPConectionData类，在把创建好的实例放到管理类LDAPConectionDataPool（池）里边；用户可以定义最多的LDAPConection链接的数量。
1、LDAPConectionData类
Java代码
import com.novell.ldap.LDAPConnection;
import com.novell.ldap.LDAPException;
public class LDAPConectionData {
private boolean conetIsFree=true;//判断该链接是否被占用（链接是可用的，还是已经在使用中的）
private boolean isClosed=false;//判断链接是否关闭，在这里几乎我没有用到该标志。
private LDAPConnection conn=null;//LDAP链接。
public LDAPConectionData(String ldapURl,int port,String user,String passwd) throws LDAPException{//初始化LDAP链接
conn=new LDAPConnection();
conn.connect(ldapURl, port);
conn.bind(LDAPConnection.LDAP_V3, user, passwd);
System.out.println("------LDAPConnection create successfully!-----");
}
public boolean getConetIsFree() {
return conetIsFree;
}
public void setConetIsFree(boolean conetIsFree) {
this.conetIsFree = conetIsFree;
}
public boolean getClosed() {
return isClosed;
}
public void setClosed(boolean isClosed) {
this.isClosed = isClosed;
}
public LDAPConnection getConn() {
return this.conn;
}
public void closeLDAPConnection(){
if(this.conn!=null){
try {
conn.disconnect();
} catch (LDAPException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
import com.novell.ldap.LDAPConnection;
import com.novell.ldap.LDAPException;
public class LDAPConectionData {
private boolean conetIsFree=true;//判断该链接是否被占用（链接是可用的，还是已经在使用中的）
private boolean isClosed=false;//判断链接是否关闭，在这里几乎我没有用到该标志。
private LDAPConnection conn=null;//LDAP链接。
public LDAPConectionData(String ldapURl,int port,String user,String passwd) throws LDAPException{//初始化LDAP链接
conn=new LDAPConnection();
conn.connect(ldapURl, port);
conn.bind(LDAPConnection.LDAP_V3, user, passwd);
System.out.println("------LDAPConnection create successfully!-----");
}
public boolean getConetIsFree() {
return conetIsFree;
}
public void setConetIsFree(boolean conetIsFree) {
this.conetIsFree = conetIsFree;
}
public boolean getClosed() {
return isClosed;
}
public void setClosed(boolean isClosed) {
this.isClosed = isClosed;
}
public LDAPConnection getConn() {
return this.conn;
}
public void closeLDAPConnection(){
if(this.conn!=null){
try {
conn.disconnect();
} catch (LDAPException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
2、LDAPConectionDataPool类，该类用来获取连接，并释放链接（管理连接资源）。
Java代码
import java.util.ArrayList;
import java.util.List;
import com.novell.ldap.LDAPException;
final class LDAPConectionDataPool {
private List<LDAPConectionData> pool = new ArrayList<LDAPConectionData>();//生成的LDAPConectionData实例，统统的都放到该List中，进行管理。
private static LDAPConectionDataPool LDAPConnDataPool = null;//把该类设置成一个单点模式。
private LDAPConectionDataPool() {
}
public static synchronized LDAPConectionDataPool getInstance() {
if (LDAPConnDataPool == null) {
return new LDAPConectionDataPool();
} else {
return LDAPConnDataPool;
}
}
public void add(LDAPConectionData aa) {
aa.setConetIsFree(false);
this.pool.add(aa);
}
public synchronized void setConectionDataFree(LDAPConectionData da) {//用完后设置该连接为空闲状态，以便其他线程重用，并把阻塞的线程唤醒。
if (!da.getConetIsFree()) {
da.setConetIsFree(true);
this.notifyAll();
}
}
public synchronized LDAPConectionData getLDAPConectionData()
throws InterruptedException {//调用该方法返回一个LDAPConectionData
LDAPConectionData datatemp = null;
if (this.getSize() < LDAPConectionDataFactory.MAX_NUM_CONN) {//如果产生的LDAPConectionData还没有达到最大连接数，则可以从工厂里获取。
if (getSize() == 0 || datatemp == null) {
try {
datatemp = LDAPConectionDataFactory.createLDAPConection();
System.out.println(getSize());
this.add(datatemp);
} catch (LDAPException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
} else {//如果已经达到最大连接数了。那么就的等待，知道有空闲的LDAPConectionData可以使用。
wait();
for (LDAPConectionData data : pool) {
if (data.getConetIsFree())
datatemp = data;
break;
}
}
return datatemp;
}
public int getSize() {
return pool.size();
}
public void removeAll() {
closeAll();
pool.clear();
}
public void closeAll() {
for (LDAPConectionData data : pool) {
data.closeLDAPConnection();
}
}
public LDAPConectionData hasFree() {//这个方法几乎没有用。
if (getSize() < 1)
return null;
LDAPConectionData datatemp = null;
for (LDAPConectionData data : pool) {
if (data.getConetIsFree())
datatemp = data;
break;
}
return datatemp;
}
}
import java.util.ArrayList;
import java.util.List;
import com.novell.ldap.LDAPException;
final class LDAPConectionDataPool {
private List<LDAPConectionData> pool = new ArrayList<LDAPConectionData>();//生成的LDAPConectionData实例，统统的都放到该List中，进行管理。
private static LDAPConectionDataPool LDAPConnDataPool = null;//把该类设置成一个单点模式。
private LDAPConectionDataPool() {
}
public static synchronized LDAPConectionDataPool getInstance() {
if (LDAPConnDataPool == null) {
return new LDAPConectionDataPool();
} else {
return LDAPConnDataPool;
}
}
public void add(LDAPConectionData aa) {
aa.setConetIsFree(false);
this.pool.add(aa);
}
public synchronized void setConectionDataFree(LDAPConectionData da) {//用完后设置该连接为空闲状态，以便其他线程重用，并把阻塞的线程唤醒。
if (!da.getConetIsFree()) {
da.setConetIsFree(true);
this.notifyAll();
}
}
public synchronized LDAPConectionData getLDAPConectionData()
throws InterruptedException {//调用该方法返回一个LDAPConectionData
LDAPConectionData datatemp = null;
if (this.getSize() < LDAPConectionDataFactory.MAX_NUM_CONN) {//如果产生的LDAPConectionData还没有达到最大连接数，则可以从工厂里获取。
if (getSize() == 0 || datatemp == null) {
try {
datatemp = LDAPConectionDataFactory.createLDAPConection();
System.out.println(getSize());
this.add(datatemp);
} catch (LDAPException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
} else {//如果已经达到最大连接数了。那么就的等待，知道有空闲的LDAPConectionData可以使用。
wait();
for (LDAPConectionData data : pool) {
if (data.getConetIsFree())
datatemp = data;
break;
}
}
return datatemp;
}
public int getSize() {
return pool.size();
}
public void removeAll() {
closeAll();
pool.clear();
}
public void closeAll() {
for (LDAPConectionData data : pool) {
data.closeLDAPConnection();
}
}
public LDAPConectionData hasFree() {//这个方法几乎没有用。
if (getSize() < 1)
return null;
LDAPConectionData datatemp = null;
for (LDAPConectionData data : pool) {
if (data.getConetIsFree())
datatemp = data;
break;
}
return datatemp;
}
}
3.LDAPConectionDataFactory工厂类。用来创建连接的类。
Java代码
import com.novell.ldap.LDAPException;
public class LDAPConectionDataFactory {
private static final String LDAP_URL = "192.168.1.21";//连接地址
private static final int LDAP_PORT = 20000;//端口。
private static final String MANAGER_USR = "cn=admin";//用户名
private static final String MANAGER_PASSWD = "12345678";//密码
public static final int MAX_NUM_CONN = 2;//用户可以在这儿设置最多生成几个链接。
public static LDAPConectionData createLDAPConection() throws LDAPException {
return new LDAPConectionData(
LDAPConectionDataFactory.LDAP_URL,
LDAPConectionDataFactory.LDAP_PORT,
LDAPConectionDataFactory.MANAGER_USR,
LDAPConectionDataFactory.MANAGER_PASSWD);
}
}
import com.novell.ldap.LDAPException;
public class LDAPConectionDataFactory {
private static final String LDAP_URL = "192.168.1.21";//连接地址
private static final int LDAP_PORT = 20000;//端口。
private static final String MANAGER_USR = "cn=admin";//用户名
private static final String MANAGER_PASSWD = "12345678";//密码
public static final int MAX_NUM_CONN = 2;//用户可以在这儿设置最多生成几个链接。
public static LDAPConectionData createLDAPConection() throws LDAPException {
return new LDAPConectionData(
LDAPConectionDataFactory.LDAP_URL,
LDAPConectionDataFactory.LDAP_PORT,
LDAPConectionDataFactory.MANAGER_USR,
LDAPConectionDataFactory.MANAGER_PASSWD);
}
}
以上就是介绍的全部。
还有，再贴上测试类和运行结果。
Java代码
<STRONG>import com.novell.ldap.LDAPAttribute;
import com.novell.ldap.LDAPAttributeSet;
import com.novell.ldap.LDAPConnection;
import com.novell.ldap.LDAPEntry;
import com.novell.ldap.LDAPException;
public class ThreadTest extends Thread {
private int uid;
public LDAPConectionDataPool pool=null;
public ThreadTest(int uid,LDAPConectionDataPool pl) {
this.uid = uid;
this.pool=pl;
}
public void run() {
System.out.println("Thread:"+uid+" is run!");
LDAPAttributeSet attributeSet= new LDAPAttributeSet();
attributeSet.add(new LDAPAttribute("objectclass", new String(
"inetOrgPerson")));
attributeSet.add(new LDAPAttribute("cn", new String[] { "李",
"Jim Smith", "Jimmy Smith" }));
attributeSet.add(new LDAPAttribute("givenname", new String[] { "测试",
"Jim", "Jimmy" }));
attributeSet.add(new LDAPAttribute("sn", new String("Smith")));
attributeSet.add(new LDAPAttribute("telephonenumber", new String(
"1 801 555 1212")));
attributeSet.add(new LDAPAttribute("mail",
new String("JSmith@Acme.com")));
attributeSet.add(new LDAPAttribute("userpassword", new String(
"newpassword")));
LDAPEntry entry = new LDAPEntry("uid="+uid+",ou=Code,cn=Lizl,dc=4a,dc=4adomain",
attributeSet);
LDAPConectionData data=null;
try {
data = pool.getLDAPConectionData();
} catch (InterruptedException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
try {
LDAPConnection lc=data.getConn();
lc.add(entry);
} catch (LDAPException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
if(data!=null)
pool.setConectionDataFree(data);
}
}
public static void main(String args[]) {
LDAPConectionDataPool pool=LDAPConectionDataPool.getInstance();
ThreadTest a=new ThreadTest(400,pool);
ThreadTest b=new ThreadTest(401,pool);
ThreadTest c=new ThreadTest(402,pool);
ThreadTest d=new ThreadTest(403,pool);
ThreadTest e=new ThreadTest(404,pool);
ThreadTest f=new ThreadTest(405,pool);
ThreadTest g=new ThreadTest(406,pool);
ThreadTest h=new ThreadTest(407,pool);
ThreadTest i=new ThreadTest(408,pool);
ThreadTest j=new ThreadTest(409,pool);
ThreadTest k=new ThreadTest(410,pool);
a.start();
b.start();
c.start();
d.start();
e.start();
f.start();
g.start();
h.start();
i.start();
j.start();
k.start();
}
}
</STRONG>
import com.novell.ldap.LDAPAttribute;
import com.novell.ldap.LDAPAttributeSet;
import com.novell.ldap.LDAPConnection;
import com.novell.ldap.LDAPEntry;
import com.novell.ldap.LDAPException;
public class ThreadTest extends Thread {
private int uid;
public LDAPConectionDataPool pool=null;
public ThreadTest(int uid,LDAPConectionDataPool pl) {
this.uid = uid;
this.pool=pl;
}
public void run() {
System.out.println("Thread:"+uid+" is run!");
LDAPAttributeSet attributeSet= new LDAPAttributeSet();
attributeSet.add(new LDAPAttribute("objectclass", new String(
"inetOrgPerson")));
attributeSet.add(new LDAPAttribute("cn", new String[] { "李",
"Jim Smith", "Jimmy Smith" }));
attributeSet.add(new LDAPAttribute("givenname", new String[] { "测试",
"Jim", "Jimmy" }));
attributeSet.add(new LDAPAttribute("sn", new String("Smith")));
attributeSet.add(new LDAPAttribute("telephonenumber", new String(
"1 801 555 1212")));
attributeSet.add(new LDAPAttribute("mail",
new String("JSmith@Acme.com")));
attributeSet.add(new LDAPAttribute("userpassword", new String(
"newpassword")));
LDAPEntry entry = new LDAPEntry("uid="+uid+",ou=Code,cn=Lizl,dc=4a,dc=4adomain",
attributeSet);
LDAPConectionData data=null;
try {
data = pool.getLDAPConectionData();
} catch (InterruptedException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
try {
LDAPConnection lc=data.getConn();
lc.add(entry);
} catch (LDAPException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
if(data!=null)
pool.setConectionDataFree(data);
}
}
public static void main(String args[]) {
LDAPConectionDataPool pool=LDAPConectionDataPool.getInstance();
ThreadTest a=new ThreadTest(400,pool);
ThreadTest b=new ThreadTest(401,pool);
ThreadTest c=new ThreadTest(402,pool);
ThreadTest d=new ThreadTest(403,pool);
ThreadTest e=new ThreadTest(404,pool);
ThreadTest f=new ThreadTest(405,pool);
ThreadTest g=new ThreadTest(406,pool);
ThreadTest h=new ThreadTest(407,pool);
ThreadTest i=new ThreadTest(408,pool);
ThreadTest j=new ThreadTest(409,pool);
ThreadTest k=new ThreadTest(410,pool);
a.start();
b.start();
c.start();
d.start();
e.start();
f.start();
g.start();
h.start();
i.start();
j.start();
k.start();
}
}
运行结果如下：
Thread:400 is run!
Thread:401 is run!
Thread:403 is run!
Thread:405 is run!
Thread:402 is run!
Thread:404 is run!
Thread:406 is run!
Thread:408 is run!
Thread:407 is run!
Thread:409 is run!
Thread:410 is run!
------LDAPConnection create successfully!-----
0
------LDAPConnection create successfully!-----
1
原稿地址：http://qingyuan914.javaeye.com/blog/216955
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