通过在JAVA中传递组名从Active Directory获取电子邮件地址
我正在尝试创建一个函数，通过将组名作为输入参数，从Active Directory返回所有组成员的电子邮件地址，结果将是“；”分开的字符串
我发现了以下代码，但只返回了第一个成员的电子邮件地址。并非所有成员都可以。请您指导我以下代码中存在什么问题，或者Java中是否有其他方法来完成此任务： 谢谢
public String fetchGroupMembers(String strGroupName)
{
Vector memberEmails = new Vector();
String strEmails = "";
try
{
//Create the initial directory context
//DirContext ctx = new InitialDirContext(ctx);
//Create the search controls
SearchControls searchCtls = new SearchControls();
//Specify the search scope
searchCtls.setSearchScope(SearchControls.SUBTREE_SCOPE);
//specify the LDAP search filter
String searchFilter = "(&(objectClass=group)(CN="+strGroupName+"))";
//Specify the Base for the search
//String searchBase =searchBase;
//initialize counter to total the group members
int totalResults = 0;
//Specify the attributes to return
String returnedAtts[]={"member", "mail"};
searchCtls.setReturningAttributes(returnedAtts);
//Search for objects using the filter
NamingEnumeration answer = ctx.search(searchBase, searchFilter, searchCtls);
//Loop through the search results
while (answer.hasMoreElements())
{
SearchResult sr = (SearchResult)answer.next();
//System.out.println(">>>" + sr.getName());
Attributes attrs = sr.getAttributes();
if (attrs != null)
{
try
{
for (NamingEnumeration ae = attrs.getAll();ae.hasMore();)
{
Attribute attr = (Attribute)ae.next();
//System.out.println("Attribute: " + attr.getID());
for (NamingEnumeration e = attr.getAll();e.hasMore();totalResults++)
{
String str = e.next().toString();
//System.out.println(" " + totalResults + ". " + str );
int end = str.indexOf(",");
//System.out.println("end " + end);
if(end != -1)
{
String str1 = str.substring(3, end);
//System.out.println("Name-->>" + str1 + "<<");
doFilterSearch(str1.trim(), memberEmails);
}
}
}
}
catch (NamingException e)
{
e.printStackTrace();
System.err.println("Problem listing members: " + e);
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
System.out.println("Total members: " + totalResults);
ctx.close();
}
和过滤代码：
public void doFilterSearch(String employeeID,Vector memberEmails) throws Exception{
SearchControls ctls = new SearchControls();
ctls. setReturningObjFlag (true);
ctls.setSearchScope(SearchControls.SUBTREE_SCOPE);
String[] attrIDs = {"sn","mail"};
ctls.setReturningAttributes(attrIDs);
//System.out.println("Searching For :: " + employeeID);
String filter = "(&(objectclass=*)(cn="+employeeID+"))"; // ( mail=*) // , "mail","manager"
NamingEnumeration myInum = ctx.search(searchBase, filter, ctls);
//formatResults(answer , grievanceBean);
int count = 0;
try
{
while (myInum.hasMoreElements())
{
SearchResult sr = (SearchResult)myInum.next();
//grievanceBean = formatAttributes(sr.getAttributes() , grievanceBean);
for (NamingEnumeration enuNaming = sr.getAttributes().getAll(); enuNaming.hasMore();)
{
Attribute attrib = (Attribute)enuNaming.nextElement();
String attrName = attrib.getID();
// System.out.println("ATTRIBUTE Name : " + attrib.getID());
// System.out.println("ATTRIBUTE Value: " + attrib.toString());
if (attrName.equalsIgnoreCase("mail"))
{
String attrValue = attrib.toString();
int length = attrValue.length();
String mail = attrValue.substring(attrValue.indexOf(":")+2,length);
//System.out.println("Mail :: -->" + mail + "<--");
//System.out.println("E-mail :: -->>" + (mail.substring(mail.indexOf(":") + 1, mail.length())).trim() + "<<--");
memberEmails.add((mail.substring(mail.indexOf(":") + 1, mail.length())).trim());
}
}
count++;
}
//System.out.println("Search returned " + count + " results");
}
catch (NamingException e)
{
e.printStackTrace();
}
ctx.close();
}
编辑： 谢谢你的指导，我在收到第二个电子邮件地址时出错了
================= Debug Result ===========================
>>>CN=GRP_WF_XXXXNF,OU=DMS
Attribute: member
0. CN=MAk,OU=HR,DC=xxx,DC=com
Name-->>MAk<<
Searching For :: MAk
ATTRIBUTE Name : mail
ATTRIBUTE Value: mail: mak@xxx.coom
Mail :: -->mak@xxx.coom<--
E-mail :: -->>mak@xxx.coom<<--
ATTRIBUTE Name : sn
ATTRIBUTE Value: sn: SAk
Search returned 1 results
1. CN=Msi,OU=HR,,DC=xxx,DC=com
end 33
Name-->>Msi<<
Searching For :: Msi
Total members: 1
mak@xxx.coom
exception :: java.lang.NullPointerException
javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:662)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:307)
at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:344)
at javax.naming.directory.InitialDirContext.getURLOrDefaultInitDirCtx(InitialDirContext.java:106)
at javax.naming.directory.InitialDirContext.search(InitialDirContext.java:267)
at com.mzec.model.ADModel.doFilterSearch(ADModel.java:388)
at com.mzec.model.ADModel.fetchGroupMembers(ADModel.java:270)
at com.mzec.model.ADModel.main(ADModel.java:439)
Problem listing members: javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
第388行
NamingEnumeration myInum = ctx.search(searchBase, filter, ctls);
# 1 楼答案
我还没有试着运行你的代码，但是如果我正确地计算了你的大括号，你正在用循环结束你的
DirContext：这也与您发布的输出相对应：
关闭后对
ctx的第一个操作将触发NullPointerException。你还关闭了（相同的？）ctx在doFilterSearch的末尾