以下是一个使用UnboundID库重新启动服务器后从连接池中打开LDAP连接的示例代码:
import com.unboundid.ldap.sdk.LDAPConnection;
import com.unboundid.ldap.sdk.LDAPConnectionPool;
import com.unboundid.ldap.sdk.LDAPException;
import com.unboundid.ldap.sdk.ResultCode;
public class LDAPConnectionExample {
private static final String LDAP_HOST = "ldap.example.com";
private static final int LDAP_PORT = 389;
private static final String LDAP_BIND_DN = "cn=admin,dc=example,dc=com";
private static final String LDAP_BIND_PASSWORD = "password";
private static LDAPConnectionPool connectionPool;
public static void main(String[] args) {
// 初始化连接池
initializeConnectionPool();
// 在服务器重新启动后,从连接池中获取LDAP连接
LDAPConnection ldapConnection = getConnectionFromPool();
if (ldapConnection != null) {
try {
// 执行LDAP操作,例如搜索等
// ldapConnection.search(...);
// ...
// 关闭LDAP连接
ldapConnection.close();
} catch (LDAPException e) {
e.printStackTrace();
} finally {
// 将连接返回到连接池
returnConnectionToPool(ldapConnection);
}
}
}
private static void initializeConnectionPool() {
try {
connectionPool = new LDAPConnectionPool(
LDAP_HOST,
LDAP_PORT,
LDAP_BIND_DN,
LDAP_BIND_PASSWORD
);
} catch (LDAPException e) {
e.printStackTrace();
}
}
private static LDAPConnection getConnectionFromPool() {
try {
return connectionPool.getConnection();
} catch (LDAPException e) {
e.printStackTrace();
}
return null;
}
private static void returnConnectionToPool(LDAPConnection connection) {
if (connection != null) {
try {
connectionPool.releaseConnection(connection);
} catch (LDAPException e) {
e.printStackTrace();
}
}
}
}
以上代码示例中,我们通过LDAPConnectionPool
类创建了一个LDAP连接池,并在服务器重新启动后调用getConnectionFromPool()
方法从连接池中获取一个LDAP连接。然后,我们可以执行LDAP操作,最后通过returnConnectionToPool()
方法将连接返回到连接池中以供重用。请根据实际情况替换示例中的LDAP主机名、端口、绑定DN和密码。