我将不得不从java 6迁移到java 8，所以必须用其他东西替换jdbc：odbc。
我尝试了ucanaccess，但有例外：
net.ucanaccess.jdbc.UcanaccessSQLException：数据异常：数值超出范围
readAllSites2 [ucanaccess] (C:\Mines\TestDBase.mdb)
driver: net.ucanaccess.jdbc.UcanaccessDriver
database: jdbc:ucanaccess://C:\Mines\TestDBase.mdb
readAllSites2 ERROR: net.ucanaccess.jdbc.UcanaccessSQLException: data exception: numeric value out of range
net.ucanaccess.jdbc.UcanaccessSQLException: data exception: numeric value out of range
at net.ucanaccess.jdbc.UcanaccessDriver.connect(UcanaccessDriver.java:247)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:185)
at Aura.ReadSites.readAllSites2(ReadSites.java:92)
at Aura.ReadSites.readAllSites(ReadSites.java:26)
Caused by: java.sql.SQLDataException: data exception: numeric value out of range
at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
at org.hsqldb.jdbc.JDBCUtil.throwError(Unknown Source)
at org.hsqldb.jdbc.JDBCPreparedStatement.setParameter(Unknown Source)
at org.hsqldb.jdbc.JDBCPreparedStatement.setObject(Unknown Source)
at net.ucanaccess.converters.LoadJet.execInsert(LoadJet.java:1326)
at net.ucanaccess.converters.LoadJet.access$7(LoadJet.java:1322)
at net.ucanaccess.converters.LoadJet$TablesLoader.loadTableData(LoadJet.java:775)
at net.ucanaccess.converters.LoadJet$TablesLoader.loadTablesData(LoadJet.java:928)
at net.ucanaccess.converters.LoadJet$TablesLoader.loadTables(LoadJet.java:972)
at net.ucanaccess.converters.LoadJet$TablesLoader.access$3(LoadJet.java:966)
at net.ucanaccess.converters.LoadJet.loadDB(LoadJet.java:1361)
at net.ucanaccess.jdbc.UcanaccessDriver.connect(UcanaccessDriver.java:236)
... 20 more
Caused by: org.hsqldb.HsqlException: data exception: numeric value out of range
at org.hsqldb.error.Error.error(Unknown Source)
at org.hsqldb.error.Error.error(Unknown Source)
at org.hsqldb.types.NumberType.toDouble(Unknown Source)
at org.hsqldb.types.NumberType.convertToDouble(Unknown Source)
at org.hsqldb.types.NumberType.convertToDefaultType(Unknown Source)
... 30 more
尝试连接时。 使用jackcess的查询工作，但显然不是保存。 这是代码：
private int readAllSites1(String dbName)
{
System.out.println("readAllSites1 [jdbc.odbc] ("+dbName+")");
vAllSites.removeAllElements();
String driver = "sun.jdbc.odbc.JdbcOdbcDriver";
String database = "jdbc:odbc:Driver={Microsoft Access Driver (*.mdb, *.accdb)};DBQ=" + dbName + ";DriverID=22;READONLY=true}";
System.out.println("driver: "+driver);
System.out.println("database: "+database);
String tableName = "Configurations";
try
{
Class.forName(driver);
Connection con = DriverManager.getConnection( database ,"","");
Statement s = con.createStatement();
s.execute("select SiteID,SiteName,PositionX,PositionY,PositionZ,Pvelocity,Svelocity from \""+tableName+"\" order by SiteID");
ResultSet r = s.getResultSet();
if (r == null)
{
s.close(); con.close();
System.out.println("readAllSites1: ResultSet is null exiting...");
return(-1);
}
while ( r.next() )
{
ASite ae = new ASite();
ae.ID = r.getInt("SiteID");
ae.Name = r.getString("SiteName");
double X = r.getDouble("PositionX");
double Y = r.getDouble("PositionY");
double Z = r.getDouble("PositionZ");
ae.convertCoords(X,Y,Z);
ae.PVel = r.getFloat("Pvelocity");
ae.SVel = r.getFloat("Svelocity");
vAllSites.addElement(ae);
}
s.close();
con.close();
}
catch (Exception ex)
{
System.out.println("readAllSites1 ERROR: " + ex);
ex.printStackTrace();
vAllSites.removeAllElements();
return(-1);
}
return(vAllSites.size());
}
private int readAllSites2(String dbName)
{
System.out.println("readAllSites2 [ucanaccess] ("+dbName+")");
vAllSites.removeAllElements();
String driver = "net.ucanaccess.jdbc.UcanaccessDriver";
String database = "jdbc:ucanaccess://" + dbName;
System.out.println("driver: "+driver);
System.out.println("database: "+database);
String tableName = "Configurations";
try
{
Class.forName(driver);
Connection con = DriverManager.getConnection( database ,"",""); //Line 92 - here is exception
System.out.println("connected ");
Statement s = con.createStatement();
System.out.println("Statement created ");
s.execute("select SiteID,SiteName,PositionX,PositionY,PositionZ,Pvelocity,Svelocity from \""+tableName+"\" order by SiteID"); // select the data from the table
System.out.println("Statement executed ");
ResultSet r = s.getResultSet();
if (r == null)
{
s.close(); con.close();
System.out.println("readAllSites2: ResultSet is null exiting...");
return(-1);
}
while ( r.next() )
{
ASite ae = new ASite();
ae.ID = r.getInt("SiteID");
ae.Name = r.getString("SiteName");
double X = r.getDouble("PositionX");
double Y = r.getDouble("PositionY");
double Z = r.getDouble("PositionZ");
ae.convertCoords(X,Y,Z);
ae.PVel = r.getFloat("Pvelocity");
ae.SVel = r.getFloat("Svelocity");
vAllSites.addElement(ae);
}
s.close();
con.close();
printAllSites();
}
catch (Exception ex)
{
System.out.println("readAllSites2 ERROR: " + ex);
ex.printStackTrace();
vAllSites.removeAllElements();
return(-1);
}
return(vAllSites.size());
}
private int readAllSites3(String dbName)
{
System.out.println("readAllSites3 [jackcess] ("+dbName+")");
vAllSites.removeAllElements();
String tableName = "Configurations";
try
{
File dbFile = new File(dbName);
Database db = new DatabaseBuilder().setReadOnly(true).open(dbFile);
// Database db = DatabaseBuilder.open(dbFile);
Table table = db.getTable(tableName);
for (Row r : table)
{
ASite ae = new ASite();
ae.ID = r.getInt("SiteID");
ae.Name = r.getString("SiteName");
double X = r.getDouble("PositionX");
double Y = r.getDouble("PositionY");
double Z = r.getDouble("PositionZ");
ae.convertCoords(X,Y,Z);
ae.PVel = r.getFloat("Pvelocity");
ae.SVel = r.getFloat("Svelocity");
vAllSites.addElement(ae);
}
db.close();
}
catch (Exception ex)
{
System.out.println("readAllSites3 ERROR: " + ex);
ex.printStackTrace();
vAllSites.removeAllElements();
return(-1);
}
return(vAllSites.size());
}
readAllSites1使用jdbc：odbc并且工作
readAllSites2使用ucanaccess但不起作用
readAllSites3使用jackcess并正常工作
异常数值超出范围是奇怪的，因为它在尝试连接时发生，而不是在读取
期间