如何将 MS Access 数据库与 Java 8 连接？

Posted 2023-04-19

【中文标题】如何将 MS Access 数据库与 Java 8 连接？

【英文标题】：How to connect MS Access database with Java 8?

【发布时间】：2015-08-02 19:15:49

【问题描述】：

我想做的事：

我想用 Java 8 连接我的 MS Access 数据库。所以我使用“UcanAccess”驱动程序连接到我的数据库。

我在用什么：

Eclipse、Java 8 和 MS Access 数据库

我的 MS Access 数据库路径：

C:/Users/dave/My_WorkSpace/Eclipse_Workspaces/workspace-jsp/Database11.accdb"

我的项目中有以下 Jar 文件：

mysql-connector-java-5.1.35-bin.jar

ucanaccess-2.095.jar

jackcess-2.1.2.jar

hsqldb.jar

commons-lang3-3.4.jar

commons-logging-1.2.jar

错误：

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/lang/builder/CompareToBuilder
at com.healthmarketscience.jackcess.impl.RowIdImpl.compareTo(RowIdImpl.java:106)
at com.healthmarketscience.jackcess.impl.IndexData$Entry.compareTo(IndexData.java:2039)
at com.healthmarketscience.jackcess.impl.IndexData$Entry.compareTo(IndexData.java:1847)
at java.util.Collections.indexedBinarySearch(Unknown Source)
at java.util.Collections.binarySearch(Unknown Source)
at com.healthmarketscience.jackcess.impl.IndexData$DataPage.findEntry(IndexData.java:2570)
at com.healthmarketscience.jackcess.impl.IndexData.findEntryPosition(IndexData.java:844)
at com.healthmarketscience.jackcess.impl.IndexData.access$3700(IndexData.java:47)
at com.healthmarketscience.jackcess.impl.IndexData$EntryCursor.updatePosition(IndexData.java:2335)
at com.healthmarketscience.jackcess.impl.IndexData$EntryCursor.restorePosition(IndexData.java:2273)
at com.healthmarketscience.jackcess.impl.IndexData$EntryCursor.restorePosition(IndexData.java:2256)
at com.healthmarketscience.jackcess.impl.IndexData$EntryCursor.beforeEntry(IndexData.java:2218)
at com.healthmarketscience.jackcess.impl.IndexCursorImpl.findPotentialRow(IndexCursorImpl.java:376)
at com.healthmarketscience.jackcess.impl.IndexCursorImpl.findFirstRowByEntryImpl(IndexCursorImpl.java:282)
at com.healthmarketscience.jackcess.impl.IndexCursorImpl.findFirstRowByEntry(IndexCursorImpl.java:153)
at com.healthmarketscience.jackcess.impl.DatabaseImpl$DefaultTableFinder.findRow(DatabaseImpl.java:2074)
at com.healthmarketscience.jackcess.impl.DatabaseImpl$TableFinder.findObjectId(DatabaseImpl.java:1953)
at com.healthmarketscience.jackcess.impl.DatabaseImpl.readSystemCatalog(DatabaseImpl.java:858)
at com.healthmarketscience.jackcess.impl.DatabaseImpl.<init>(DatabaseImpl.java:518)
at com.healthmarketscience.jackcess.impl.DatabaseImpl.open(DatabaseImpl.java:389)
at com.healthmarketscience.jackcess.DatabaseBuilder.open(DatabaseBuilder.java:248)
at net.ucanaccess.jdbc.DefaultJackcessOpener.open(DefaultJackcessOpener.java:38)
at net.ucanaccess.jdbc.DBReference.<init>(DBReference.java:158)
at net.ucanaccess.jdbc.DBReferenceSingleton.loadReference(DBReferenceSingleton.java:57)
at net.ucanaccess.jdbc.UcanaccessDriver.connect(UcanaccessDriver.java:103)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at ex01.main(ex01.java:37)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.lang.builder.CompareToBuilder
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 28 more

连接数据库的代码：

public class ex01 
public static void main(String[] args) 
    String url = "jdbc:ucanaccess://C:/Users/dave/My_WorkSpace/Eclipse_Workspaces/workspace-jsp/Database11.accdb";

    Connection con;

    Statement stmt;

    String query = "Select * from user";

    try 
        // Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        Class.forName("net.ucanaccess.jdbc.UcanaccessDriver");

        con = DriverManager.getConnection(url, "", "");

        stmt = con.createStatement();

        // Returns a ResultSet that contains the data produced by the query;
        // never null
        ResultSet rs = stmt.executeQuery(query);

        System.out.println("User Data:");
        System.out.println("FirstName\tLastName\tAge");

        while (rs.next()) 
            String fName = rs.getString("FirstName");
            String lName = rs.getString("LastName");
            int age = rs.getInt("age");
            System.out.println(fName + "\t" + lName + "\t" + age);
        

        stmt.close();

        con.close();
     catch (SQLException ex) 
        System.err.println("SQLException: " + ex.getMessage());
     catch (ClassNotFoundException e) 
        // TODO Auto-generated catch block
        e.printStackTrace();
    

【问题讨论】：

尝试使用commons-lang jar 的 2.0 版 (commons-lang-2.0.jar)。

我猜，您的 JAR 中有一些 不匹配，请查看下面的文章以获取完整示例，其中包含驱动程序和相关 JAR 信息benchresources.net/…

【参考方案1】：

作为you can see，jackcess 2.1.2 依赖于 commons-lang 2.6。您使用的版本 (3.4) 不向后兼容。

如果您的目标是连接到 MS Access，为什么还要为 MySQL 和 HSQLDB 提供 JDBC 驱动程序？

【讨论】：

很好的链接。旧版本是为了向后兼容。

Access 数据库的UCanAccess JDBC 驱动程序使用 HSQLDB 作为后备数据库（通常仅在内存中）。