我需要使用java将csv导入访问数据库。我尝试使用以下代码
我的代码:
public static void main (String args[])
{
String dbFileSpec = "C:\\Documents and Settings\\admin\\My Documents\\NetBeansProjects\\AutomateExcelDatabase\\Centre.accdb";
// String accessTableName = "Centre";
String csvDirPath = "C:\\Documents and Settings\\admin\\My Documents\\NetBeansProjects\\AutomateExcelDatabase";
String csvFileName = "myjdbcfile.csv";
try (Connection conn = DriverManager.getConnection(
"jdbc:ucanaccess://" + dbFileSpec
// + ";newdatabaseversion=V2007"
)) {
try
{
String strSQL = "SELECT * INTO " + dbFileSpec + " FROM [Text;HDR=YES;DATABASE=" + csvDirPath + ";].[" + csvFileName + "]";
System.err.println("SQL --> "+strSQL);
PreparedStatement selectPrepSt = conn.prepareStatement(strSQL);
boolean result = selectPrepSt.execute();
System.out.println("result = " + result);
}
catch(SQLException ex)
{
System.err.println("Error --->"+ex.toString());
}
conn.commit();
conn.close();
} catch (SQLException ex) {
Logger.getLogger(NewClass.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
但它会抛出错误,因为" net.ucanaccess.jdbc.UcanaccessSQLException:意外令牌:INTO必需:FROM"。
答案 0 :(得分:2)
尝试使用
的两个问题SELECT ... INTO NewTableName FROM [Text; ...].[csvFileName]
在这方面是:
SELECT ... INTO NewTableName FROM OldTableName
是UCanAccess不支持的Access SQL构造(至少目前不支持),
... FROM [Text; ...].[csvFileName]
是一个ODBC"技巧"并且UCanAccess不使用ODBC。
但是,UCanAccess使用HSQLDB,HSQLDB支持读取CSV文件,如下所示:
final String csvFolder = "C:/__tmp/zzzTest/";
final String csvFileName = "myjdbcfile.csv";
final String csvDbName = "hsqldbTemp";
try (Connection hconn = DriverManager.getConnection(
"jdbc:hsqldb:file:" + csvFolder + "/" + csvDbName,
"SA",
"")) {
try (Statement s = hconn.createStatement()) {
s.executeUpdate("CREATE TEXT TABLE fromcsv (id int, textcol varchar(50))");
s.executeUpdate("SET TABLE fromcsv SOURCE \"" + csvFileName + "\" DESC");
try (ResultSet rs = s.executeQuery("SELECT * FROM fromcsv")) {
while (rs.next()) {
System.out.println(rs.getString("textcol"));
}
}
s.executeUpdate("SHUTDOWN");
File f = null;
f = new File(csvFolder + "/" + csvDbName + ".properties");
f.delete();
f = new File(csvFolder + "/" + csvDbName + ".script");
f.delete();
}
} catch (Exception e) {
e.printStackTrace(System.out);
}
所以你可以使用两个连接,
与Access数据库的一个jdbc:ucanaccess
连接,以及
与CSV文件的另一个jdbc:hsqldb
连接
然后将CSV文件中的行插入Access数据库中的表。
答案 1 :(得分:1)
您在此处输入了错误的查询,
String strSQL = "SELECT * INTO " + dbFileSpec + " FROM
[Text;HDR=YES;DATABASE=" + csvDirPath + ";].[" + csvFileName + "]";
应该是,
String strSQL = "SELECT *" + dbFileSpec + " FROM [Text;HDR=YES;DATABASE=" + csvDirPath + ";].[" + csvFileName + "]";