C如何覆盖LDAP服务器限制，而不是Java

我正在将我的C#程序改写为Java，并对C#应用程序可以通过以下技巧提取数万用户这一事实非常好奇：

DirectorySearcher search = new DirectorySearcher(entry);
search.SizeLimit = 99000;
search.PageSize = 98000;

但是我的Java程序坚定地说

LDAPSearchException（resultCode=4（超出大小限制），numEntries=1000，numReferences=0，errorMessage='size limited exception'）

我尝试了未绑定库和标准库。发现了关于这个问题的数百万次讨论，到处都在说——限制在服务器上，你什么也做不了

但我的C#应用程序确实有效！这怎么会发生？微软的秘密技术，其他供应商无法重复

以防万一，我的代码是：

SearchRequest searchRequest = new SearchRequest(path, SearchScope.SUB, filter, "SamAccountName");
searchRequest.setSizeLimit(99000);
searchRequest.setTimeLimitSeconds(999);

SearchResult result = connection.search(searchRequest);

for (SearchResultEntry sre : result.getSearchEntries()) {
System.out.println(count++ + ": " + sre.toString());
}

无界的

p、 我不想在搜索a*、b*、c*时使用变通方法

---

et c。特别是，考虑到用户名可能不仅仅是英文的。

进一步的阅读表明，unbounded确实支持分页模式，所以问题得到了解决

 public static void main(String[] args) {

    try {
        int count = 0;
        LDAPConnection connection = new LDAPConnection("hostname", 389, "user@domain", "password");

        final String path = "OU=Users,DC=org,DC=com";
        String[] attributes = {"SamAccountName","name"};

        SearchRequest searchRequest = new SearchRequest(path, SearchScope.SUB, Filter.createEqualityFilter("objectClass", "person"), attributes);

        ASN1OctetString resumeCookie = null;
        while (true)
        {
            searchRequest.setControls(
                    new SimplePagedResultsControl(100, resumeCookie));
            SearchResult searchResult = connection.search(searchRequest);
            for (SearchResultEntry e : searchResult.getSearchEntries())
            {
                if (e.hasAttribute("SamAccountName"))
                    System.out.print(count++ + ": " + e.getAttributeValue("SamAccountName"));

                if (e.hasAttribute("name"))
                    System.out.println("->" + e.getAttributeValue("name"));
            }

            LDAPTestUtils.assertHasControl(searchResult,
                    SimplePagedResultsControl.PAGED_RESULTS_OID);
            SimplePagedResultsControl responseControl =
                    SimplePagedResultsControl.get(searchResult);
            if (responseControl.moreResultsToReturn())
            {
                resumeCookie = responseControl.getCookie();
            }
            else
            {
                break;
            }
        }


    }
    catch (Exception e)
    {
        System.out.println(e.toString());
    }
}

---

进一步阅读表明，unbounded确实支持分页模式，所以问题就解决了

 public static void main(String[] args) {

    try {
        int count = 0;
        LDAPConnection connection = new LDAPConnection("hostname", 389, "user@domain", "password");

        final String path = "OU=Users,DC=org,DC=com";
        String[] attributes = {"SamAccountName","name"};

        SearchRequest searchRequest = new SearchRequest(path, SearchScope.SUB, Filter.createEqualityFilter("objectClass", "person"), attributes);

        ASN1OctetString resumeCookie = null;
        while (true)
        {
            searchRequest.setControls(
                    new SimplePagedResultsControl(100, resumeCookie));
            SearchResult searchResult = connection.search(searchRequest);
            for (SearchResultEntry e : searchResult.getSearchEntries())
            {
                if (e.hasAttribute("SamAccountName"))
                    System.out.print(count++ + ": " + e.getAttributeValue("SamAccountName"));

                if (e.hasAttribute("name"))
                    System.out.println("->" + e.getAttributeValue("name"));
            }

            LDAPTestUtils.assertHasControl(searchResult,
                    SimplePagedResultsControl.PAGED_RESULTS_OID);
            SimplePagedResultsControl responseControl =
                    SimplePagedResultsControl.get(searchResult);
            if (responseControl.moreResultsToReturn())
            {
                resumeCookie = responseControl.getCookie();
            }
            else
            {
                break;
            }
        }


    }
    catch (Exception e)
    {
        System.out.println(e.toString());
    }
}

---

你的LDAP服务器是Active Directory吗？那么我的投票是关于“秘密技术”。你的LDAP服务器是Active Directory吗？那么我的投票是关于“秘密技术”。