Java存儲過程

Question

我有以下Java存儲過程：

CREATE OR REPLACE AND RESOLVE JAVA SOURCE NAMED "RetreiveLdap" AS
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Hashtable;

import javax.naming.Context;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.directory.DirContext;
import javax.naming.directory.InitialDirContext;
import javax.naming.directory.SearchControls;
import javax.naming.directory.SearchResult;

public class RetreiveLdap {
    // LDAP CONFIG
    public static String CONTEXT = "com.sun.jndi.ldap.LdapCtxFactory";
    public static String HOST = "ldap://192.168.30.12:389";
    public static String USER = "cn=root,dc=company";
    public static String PASSWORD = "pa55w0rd";
    public static String BASE = "dc=company";

    // Reads from LDAP
    public static void readConfig() throws NamingException, SQLException {
        try {
            addUser("tmp", "tmp");
            Hashtable env = new Hashtable();
            env.put(Context.INITIAL_CONTEXT_FACTORY, CONTEXT);
            env.put(Context.PROVIDER_URL, HOST);
            env.put(Context.SECURITY_PRINCIPAL, USER);
            env.put(Context.SECURITY_CREDENTIALS, PASSWORD);

            DirContext ctx = new InitialDirContext(env);

            SearchControls sc = new SearchControls();
            sc.setSearchScope(SearchControls.SUBTREE_SCOPE);
            String filter = "(objectClass=person)";
            NamingEnumeration items = ctx.search(BASE, filter, sc);
            System.out.println("STARTING...");
            while (items != null && items.hasMore()) {
                SearchResult sr = (SearchResult) items.next();

                String cn = (String) sr.getAttributes().get("cn").get();
                String sn = (String) sr.getAttributes().get("sn").get();
                System.out.println("WORKING...");
                // save to table
                addUser(cn, sn);

            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    // Add LDAP user to DB.
    public static void addUser(String cn, String sn) {

        try {
            Connection conn = DriverManager
                    .getConnection("jdbc:default:connection:");

            String sql = "INSERT INTO ldapuser " + "(cn,sn) " + "VALUES(?,?)";
            PreparedStatement pstmt = conn.prepareStatement(sql);
            pstmt.setString(1, cn);
            pstmt.setString(2, sn);
            pstmt.executeUpdate();
            pstmt.close();
        } catch (SQLException e) {
            System.err.println("ERROR: " + e.getMessage());
        }
    }
}
/

我創建了一個將像上面一樣運行的過程；

CREATE OR REPLACE PROCEDURE read_ldap
  AS LANGUAGE JAVA
  NAME 'RetreiveLdap.readConfig()';
/

現在，當我從Java正常運行此類時，它運行良好，它將檢索LDAP用戶列表並將其保存到數據庫中（當然，無需創建或替換...）

但是，當我將它作為Oracle中的過程運行時，LDAP形式的用戶不會添加到表中。 我添加了addUser("tmp", "tmp"); 只是看我的代碼是否執行良好，並在此行插入了用戶，但在while循環中沒有

當我運行此過程時，有沒有辦法看到一些錯誤？

Answer 1

我在SQLPLUS中添加了以下內容

SQL> SET SERVEROUTPUT ON
SQL> CALL dbms_java.set_output(2000);

現在，我能夠看到錯誤，這與我的數據庫用戶訪問套接字的權限有關。