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"grandchild" entries */ LDAPSearchResults resUnderEntry = connsearch( childEntryDN, connSCOPE_ONE, "(objectclass=*)", attrNames, false); /* Add each "grandchild" entry to the tree*/ while ( resUnderEntryhasMoreElements() ) { grandchildEntry = resUnderEntrynext(); subEntry = new DefaultMutableTreeNode( grandchildEntrygetDN()); entryadd( subEntry ); } } } } catch( Exception e ) { /* Any errors - connecting or searching - end up here and terminate the expansion */ Systemoutprintln( etoString() ); } } /** * "Flatten" the list of attributes as a string * Instead of using LDAPEntrytoString(), which results in * a long string containing all attributes and values, * this method queries the directory for the entry and * returns a string containing newline-delimited attribute * names and values */ private String flattenAttributes( DefaultMutableTreeNode entry ) { String entryDN, attributeString; try { LDAPConnection conn = getConnection(); if ( conn == null ) { return ""; } /* Get the DN from the tree node */ entryDN = (String)entrygetUserObject(); /* Get the corresponding LDAP entry from
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the directory*/ LDAPEntry fullEntry = connread( entryDN ); /* Get the attributes for the entry */ LDAPAttributeSet attributeSet = fullEntrygetAttributeSet(); Enumeration enumAttrs = attributeSetgetAttributes(); attributeString = "Attributes:"; /* Build a string containing the attribute names and values Delimit the names and values with newline characters*/ while ( enumAttrshasMoreElements() ) { LDAPAttribute anAttr = (LDAPAttribute)enumAttrsnextElement(); String attrName = anAttrgetName(); attributeString = attributeString + "\n " + attrName; Enumeration enumVals = anAttrgetStringValues(); while ( enumValshasMoreElements() ) { String aVal = (String)enumValsnextElement(); attributeString = attributeString + "\n " + aVal; } } attributeString += "\n"; return attributeString; } catch( Exception e ) { Systemoutprintln(etoString()); } return ""; } /** * Connect to server, if not already done * * @return connection to directory server */ protected LDAPConnection getConnection() { if ( connection == null ) { try { /* Connect to the LDAP server */ connection = new LDAPConnection();
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A Directory Viewer Applet 237
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connectionconnect( host, port ); } catch ( LDAPException ex ) { Systemoutprintln( extoString() ); connection = null; } } return connection; } public static void main( String[] args ) { if ( argslength != 3 ) { Systemoutprintln( "Usage: java DirBrowser " + "<host> <port> <baseDN>" ); Systemexit( 1 ); } String host = args[0]; int port = IntegerparseInt( args[1] ); String baseDN = args[2]; DirBrowser browser = new DirBrowser( host, port, baseDN ); browserinit(); JFrame frame = new JFrame( "Directory Browser" ); frameaddWindowListener( new WindowAdapter() { public void windowClosing(WindowEvent e) { Window win = egetWindow(); winsetVisible(false); windispose(); Systemexit(0); } } ); framegetContentPane()add( browser ); framepack(); // Center frame Dimension screenSize = ToolkitgetDefaultToolkit()getScreenSize(); Dimension size = framegetSize(); screenSizeheight = screenSizeheight/2; screenSizewidth = screenSizewidth/2; sizeheight = sizeheight/2; sizewidth = sizewidth/2; int y = screenSizeheight - sizeheight; int x = screenSizewidth - sizewidth; framesetLocation(x, y );
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frameshow(); } /* JTextArea for displaying attributes of an entry */ private JTextArea attributeListing; /* Connection to directory */ private LDAPConnection connection = null; private String host = "localhost"; private int port = 389; private String base = "o=airiuscom"; private boolean isApplet = true; }
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To set up the applet for use with Java Plug-In Software, you need to use the JDK security tools to sign the applet Before you package the applet and sign the le, you need to create a BeanInfo le for your applet because of a known problem with Java Plug-In Software and Internet Explorer If the applet is served by Microsoft Internet Information Server or Microsoft Personal Web Server, Java Plug-In Software and Internet Explorer expect to nd a BeanInfo class for your applet, even though your applet is not a JavaBean If no BeanInfo class is present, the AppletClassLoader may crash with a NullPointerException You can derive your BeanInfo class from the SimpleBeanInfo class:
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import javabeans*; public class DirBrowserBeanInfo extends SimpleBeanInfo { public DirBrowserBeanInfo() { super(); } }
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After you create this le, compile your classes and create a JAR le:
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D:\>jar cvf DirBrowserjar *class added manifest adding: DirBrowser$1class (in=901) (out=485) (deflated 46%) adding: DirBrowser$2class (in=1094) (out=579) (deflated 47%) adding: DirBrowserclass (in=4842) (out=2379) (deflated 50%) adding: DirBrowserBeanInfoclass (in=235) (out=180) (deflated 23%)
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Next run the jarsigner tool to create a signed JAR le The following example creates a signed JAR le named sDirBrowserjar by signing the JAR le DirBrowserjar with the certi cate testcert
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