org.h2.jdbc.JdbcSQLException：找不到函数“TO_CHAR”; SQL语句： 我使用的是oracle 12c数据库和spring java框架。 但这个问题与oracle数据库有关。 这是sql查询。
select c1.kco as CMPY
,ltrim(to_char(c1.kco))||' - '||c1.name as DESCR
,' ' as IS_DUMMY
,'B:Balance Sheet:P:Profit and Loss:R:Revenue:C:Cost' ACCTYPES
,nullif('1','1') HIERTYPES
from pub.mncompany c1
,pub.oa_companies c2
where c1.kco = c2.company
and c1.del <> 1
and c2.del <> 1
and c2.maxPer <> 0
order by c1.kco
如何修复此错误？ 请帮我。 谢谢。 这是我的代码。
public EntityList getCompanies(String sql) throws SQLException {
if (_log.isDebugEnabled())
_log.debug(sql);
PreparedStatement stmt = null;
ResultSet resultSet = null;
try {
stmt = getConnection().prepareStatement(sql);
stmt.setFetchSize(500);
resultSet = stmt.executeQuery();
return JdbcUtils.extractToEntityListImpl(ExternalSystemDAO.COMPANIES_COL_INFO, resultSet);
} finally {
closeResultSet(resultSet);
closeStatement(stmt);
closeConnection();
}
}
这是getConnection函数。
/* */ public Connection getConnection()
/* */ {
/* 88 */ if (this.mConnection != null) {
/* 89 */ return this.mConnection;
/* */ }
/* */ try
/* */ {
/* 93 */ if (this.mDataSource != null) {
/* 94 */ this.mConnection = this.mDataSource.getConnection();
/* */ }
/* */ }
/* */ catch (SQLException sqle)
/* */ {
/* 99 */ throw new RuntimeException(sqle.getMessage(), sqle);
/* */ }
/* 101 */ return this.mConnection;
/* */ }
这是absractDAO.java。
/* */ package com.cedar.cp.ejb.impl.base;
/* */
/* */ import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.Reader;
import java.io.Serializable;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import javax.ejb.EntityContext;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.DataSource;
import oracle.sql.BLOB;
import oracle.sql.CLOB;
import org.antlr.stringtemplate.StringTemplate;
import org.antlr.stringtemplate.StringTemplateGroup;
import org.springframework.jdbc.datasource.AbstractDriverBasedDataSource;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import com.cedar.cp.api.base.CPException;
import com.cedar.cp.dto.base.PrimaryKey;
import com.cedar.cp.util.Log;
/* */
import cppro.conn.OracleConnUtils;
/* */ public abstract class AbstractDAO
/* */ implements Serializable
/* */ {
/* 516 */ protected transient Log _log = new Log(getClass());
/* */ protected transient DataSource mDataSource;
/* */ protected transient EntityContext mEntityContext;
/* */ protected transient Connection mConnection;
/* */ protected transient long mTimer;
/* */ protected transient StringTemplateGroup mStringTemplateGroup;
/* */
/* */ public AbstractDAO()
/* */ {
/* 29 */ String lookupName = "java:jdbc/fc";
/* */ try
/* */ {
/* 32 */ InitialContext ic = new InitialContext();
this.mDataSource = new DriverManagerDataSource();
try{
((DriverManagerDataSource) this.mDataSource).setDriverClassName(OracleConnUtils.className);
((AbstractDriverBasedDataSource) this.mDataSource).setUrl(OracleConnUtils.connectionURL);
((AbstractDriverBasedDataSource) this.mDataSource).setUsername(OracleConnUtils.userName);
((AbstractDriverBasedDataSource) this.mDataSource).setPassword(OracleConnUtils.password);
}catch(Exception ex){
ex.printStackTrace();
}
///* 33 */ this.mDataSource = ((DataSource)ic.lookup(lookupName));
/* */ }
/* */ catch (NamingException ne)
/* */ {
/* 37 */ throw new RuntimeException("error looking up DataSource " + lookupName + ": " + ne.getMessage(), ne);
/* */ }
/* */ }
/* */
/* */ public AbstractDAO(Connection connection)
/* */ {
/* 48 */ this.mConnection = connection;
/* */
/* 50 */ this.mDataSource = null;
/* */ }
/* */
/* */ public AbstractDAO(DataSource ds)
/* */ {
/* 59 */ this.mDataSource = ds;
/* */ }
/* */
/* */ public AbstractDAO(AbstractDAO abstractDAO)
/* */ {
/* 68 */ if (abstractDAO.getDataSource() != null)
/* 69 */ this.mDataSource = abstractDAO.getDataSource();
/* */ else
/* 71 */ this.mConnection = abstractDAO.getConnection();
/* */ }
/* */
/* */ public DataSource getDataSource()
/* */ {
/* 80 */ return this.mDataSource;
/* */ }
/* */
/* */ public Connection getConnection()
/* */ {
/* 88 */ if (this.mConnection != null) {
/* 89 */ return this.mConnection;
/* */ }
/* */ try
/* */ {
/* 93 */ if (this.mDataSource != null) {
/* 94 */ this.mConnection = this.mDataSource.getConnection();
/* */ }
/* */ }
/* */ catch (SQLException sqle)
/* */ {
/* 99 */ throw new RuntimeException(sqle.getMessage(), sqle);
/* */ }
/* 101 */ return this.mConnection;
/* */ }
/**
* @throws SQLException
*/
public static void startOracleDebugger(Connection concection) {
// Connect to SQL Developer listenning on localhost:4000
if (Boolean.getBoolean("oracle.debug")) {
try {
CallableStatement cs = concection
.prepareCall("{CALL DBMS_DEBUG_JDWP.CONNECT_TCP(?,?)}");
cs.setString(1, "localhost");
cs.setString(2, "4000");
cs.execute();
System.out
.println("Successfully connected debugger to SQL Developer localhost:4000");
} catch (RuntimeException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
/**
* @throws SQLException
*/
public static void stopOracleDebugger(Connection concection) {
// Close connection to SQL Developer listenning on localhost:4000
if (Boolean.getBoolean("oracle.debug")) {
try {
if(Boolean.getBoolean("oracle.debug")){
CallableStatement cs=concection.prepareCall("{CALL DBMS_DEBUG_JDWP.DISCONNECT(DBMS_DEBUG_JDWP.CURRENT_SESSION_ID())}");
cs.execute();
System.out.println("Disconnecting debugger from SQL Developer localhost:4000");
}
} catch (RuntimeException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
/* */
/* */ protected void closeConnection()
/* */ {
/* */ try
/* */ {
/* 111 */ if ((this.mConnection != null) && (!this.mConnection.isClosed()) && (this.mDataSource != null))
/* */ {
/* 114 */ this.mConnection.close();
/* 115 */ this.mConnection = null;
/* */ }
/* */ }
/* */ catch (Exception e)
/* */ {
/* 120 */ System.err.println("Exception when closing connection " + e.getMessage());
/* */ }
/* */ }
/* */
/* */ protected void closeResultSet(ResultSet result)
/* */ {
/* */ try
/* */ {
/* 131 */ if (result != null)
/* */ {
/* 133 */ result.close();
/* */ }
/* */ }
/* */ catch (Exception e)
/* */ {
/* 138 */ System.err.println("Exception when closing result set " + e.getMessage());
/* */ }
/* */ }
/* */
/* */ protected void closeStatement(Statement stmt)
/* */ {
/* */ try
/* */ {
/* 149 */ if (stmt != null)
/* */ {
/* 151 */ stmt.close();
/* */ }
/* */ }
/* */ catch (Exception e)
/* */ {
/* 156 */ System.err.println("Exception when closing statement " + e.getMessage());
/* */ }
/* */ }
/* */
/* */ public String clobToString(CLOB clob) throws SQLException
/* */ {
/* 162 */ BufferedReader br = null;
/* */ try
/* */ {
/* 165 */ br = new BufferedReader(clob.getCharacterStream());
/* 166 */ char[] chars = new char[(int)clob.length()];
/* 167 */ br.read(chars);
/* 168 */ String str = new String(chars);
/* */ return str;
/* */ }
/* */ catch (IOException e)
/* */ {
/* 172 */ throw new SQLException(e.getMessage());
/* */ }
/* */ finally
/* */ {
/* */ try
/* */ {
/* 178 */ br.close(); } catch (IOException e) {
/* */ }
/* */ }
/* 180 */ //throw localObject;
/* */ }
/* */
/* */ public byte[] blobToByteArray(BLOB blob)
/* */ throws SQLException
/* */ {
/* 186 */ InputStream is = null;
/* */ try
/* */ {
/* 189 */ is = blob.getBinaryStream();
/* 190 */ byte[] bytes = new byte[(int)blob.length()];
/* 191 */ is.read(bytes);
/* 192 */ byte[] arrayOfByte1 = bytes;
/* */ return arrayOfByte1;
/* */ }
/* */ catch (IOException e)
/* */ {
/* 196 */ throw new SQLException(e.getMessage());
/* */ }
/* */ finally
/* */ {
/* */ try
/* */ {
/* 202 */ is.close(); } catch (IOException e) {
/* */ }
/* */ }
/* 204 */ //throw localObject;
/* */ }
/* */
/* */ public void updateClob(CLOB clob, String str)
/* */ throws SQLException
/* */ {
/* 211 */ if (str.length() < clob.length()) {
/* 212 */ clob.trim(str.length());
/* */ }
/* 214 */ BufferedWriter br = new BufferedWriter(clob.getCharacterOutputStream());
/* */ try
/* */ {
/* 217 */ br.write(str);
/* */ }
/* */ catch (IOException e)
/* */ {
/* 221 */ throw new SQLException(e.getMessage());
/* */ }
/* */ finally
/* */ {
/* */ try
/* */ {
/* 227 */ br.flush();
/* 228 */ br.close();
/* */ }
/* */ catch (IOException e)
/* */ {
/* 232 */ throw new SQLException(e.getMessage());
/* */ }
/* */ }
/* */ }
/* */
/* */ public void updateBlob(BLOB blob, byte[] bytes) throws SQLException
/* */ {
/* 239 */ if (bytes == null) {
/* 240 */ bytes = new byte[0];
/* */ }
/* */
/* 243 */ if (bytes.length < blob.length()) {
/* 244 */ blob.trim(bytes.length);
/* */ }
/* 246 */ OutputStream os = blob.getBinaryOutputStream();
/* */ try
/* */ {
/* 249 */ os.write(bytes);
/* */ }
/* */ catch (IOException e)
/* */ {
/* 253 */ throw new SQLException(e.getMessage());
/* */ }
/* */ finally
/* */ {
/* */ try
/* */ {
/* 259 */ os.flush();
/* 260 */ os.close();
/* */ }
/* */ catch (IOException e)
/* */ {
/* 264 */ e.printStackTrace();
/* 265 */ throw new SQLException(e.getMessage());
/* */ }
/* */ }
/* */ }
/* */
/* */ protected RuntimeException handleSQLException(String sql, SQLException sqle)
/* */ {
/* 272 */ return handleSQLException(null, sql, sqle);
/* */ }
/* */
/* */ protected RuntimeException handleSQLException(PrimaryKey pk, String sql, SQLException sqle)
/* */ {
/* 277 */ StringBuffer msg = new StringBuffer();
/* 278 */ if (pk != null) {
/* 279 */ msg.append(pk.toString() + ',');
/* */ }
/* 281 */ if (sqle.getSQLState() != null) {
/* 282 */ msg.append("sqlState=" + sqle.getSQLState() + ',');
/* */ }
/* 284 */ if (sqle.getErrorCode() != 0) {
/* 285 */ msg.append("sqlCode=" + sqle.getErrorCode());
/* */ }
/* 287 */ this._log.error("handleSQLException", msg.toString());
/* 288 */ this._log.error("handleSQLException", sql, sqle);
/* */
/* 290 */ if (sqle.getMessage() != null) {
/* 291 */ msg.append(' ' + sqle.getMessage());
/* */ }
/* 293 */ CPException e = new CPException(msg.toString());
/* */
/* 295 */ e.setStackTrace(sqle.getStackTrace());
/* */
/* 297 */ return e;
/* */ }
/* */
/* */ protected Long checkLong(long value, ResultSet rs)
/* */ throws SQLException
/* */ {
/* 304 */ Long obj = null;
/* */
/* 306 */ if (!rs.wasNull()) {
/* 307 */ obj = new Long(value);
/* */ }
/* 309 */ return obj;
/* */ }
/* */
/* */ protected Integer checkInteger(int value, ResultSet rs)
/* */ throws SQLException
/* */ {
/* 315 */ Integer obj = null;
/* */
/* 317 */ if (!rs.wasNull()) {
/* 318 */ obj = new Integer(value);
/* */ }
/* 320 */ return obj;
/* */ }
/* */
/* */ protected Short checkShort(short value, ResultSet rs)
/* */ throws SQLException
/* */ {
/* 326 */ Short obj = null;
/* */
/* 328 */ if (!rs.wasNull()) {
/* 329 */ obj = new Short(value);
/* */ }
/* 331 */ return obj;
/* */ }
/* */
/* */ protected Boolean checkBoolean(boolean value, ResultSet rs)
/* */ throws SQLException
/* */ {
/* 337 */ Boolean obj = null;
/* */
/* 339 */ if (!rs.wasNull()) {
/* 340 */ obj = new Boolean(value);
/* */ }
/* 342 */ return obj;
/* */ }
/* */
/* */ protected Integer getWrappedIntegerFromJdbc(ResultSet rs, int col) throws SQLException
/* */ {
/* 347 */ int value = rs.getInt(col);
/* 348 */ if (!rs.wasNull()) {
/* 349 */ return new Integer(value);
/* */ }
/* 351 */ return null;
/* */ }
/* */
/* */ protected Short getWrappedShortFromJdbc(ResultSet rs, int col) throws SQLException {
/* 355 */ short value = rs.getShort(col);
/* 356 */ if (!rs.wasNull()) {
/* 357 */ return new Short(value);
/* */ }
/* 359 */ return null;
/* */ }
/* */
/* */ protected Long getWrappedLongFromJdbc(ResultSet rs, int col) throws SQLException {
/* 363 */ long value = rs.getLong(col);
/* 364 */ if (!rs.wasNull()) {
/* 365 */ return new Long(value);
/* */ }
/* 367 */ return null;
/* */ }
/* */
/* */ protected Boolean getWrappedBooleanFromJdbc(ResultSet rs, int col) throws SQLException {
/* 371 */ String value = rs.getString(col);
/* 372 */ if (!rs.wasNull()) {
/* 373 */ return new Boolean(value.equals("Y"));
/* */ }
/* 375 */ return null;
/* */ }
/* */
/* */ protected void setWrappedPrimitiveToJdbc(PreparedStatement stmt, int col, Integer o) throws SQLException
/* */ {
/* 380 */ if (o == null)
/* 381 */ stmt.setNull(col, 2);
/* */ else
/* 383 */ stmt.setInt(col, o.intValue());
/* */ }
/* */
/* */ protected void setWrappedPrimitiveToJdbc(PreparedStatement stmt, int col, Short o) throws SQLException {
/* 387 */ if (o == null)
/* 388 */ stmt.setNull(col, 2);
/* */ else
/* 390 */ stmt.setShort(col, o.shortValue());
/* */ }
/* */
/* */ protected void setWrappedPrimitiveToJdbc(PreparedStatement stmt, int col, Long o) throws SQLException {
/* 394 */ if (o == null)
/* 395 */ stmt.setNull(col, 2);
/* */ else
/* 397 */ stmt.setLong(col, o.longValue());
/* */ }
/* */
/* */ protected void setWrappedPrimitiveToJdbc(PreparedStatement stmt, int col, Boolean o) throws SQLException {
/* 401 */ if (o == null)
/* 402 */ stmt.setNull(col, 1);
/* */ else
/* 404 */ stmt.setString(col, o.booleanValue() ? "Y" : " ");
/* */ }
/* */
/* */ public abstract String getEntityName();
/* */
/* */ protected StringTemplate getTemplate(String name)
/* */ {
/* 417 */ StringTemplate stringTemplate = getTemplateGroup().getTemplateDefinition(name);
/* */
/* 419 */ if (stringTemplate != null) {
/* 420 */ stringTemplate.reset();
/* */ }
/* 422 */ return stringTemplate;
/* */ }
/* */
/* */ private StringTemplateGroup getTemplateGroup()
/* */ {
/* 431 */ String fullClassName = getClass().getName();
/* 432 */ String stringTemplateFileName = fullClassName.substring(fullClassName.lastIndexOf(46) + 1) + ".stg";
/* */ try
/* */ {
/* 435 */ if (this.mStringTemplateGroup == null)
/* */ {
/* 437 */ this.mStringTemplateGroup = new StringTemplateGroup(getReader(stringTemplateFileName));
/* */ }
/* 439 */ return this.mStringTemplateGroup;
/* */ }
/* */ catch (IOException e) {
/* */ }
/* 443 */ throw new IllegalStateException("Failed to load string template group file:" + stringTemplateFileName);
/* */ }
/* */
/* */ protected Reader getReader(String resourceName)
/* */ throws IOException
/* */ {
/* 457 */ InputStream is = getClass().getResourceAsStream(resourceName);
/* 458 */ if (is != null)
/* */ {
/* 460 */ return new InputStreamReader(is);
/* */ }
/* */
/* 465 */ File f = new File(resourceName);
/* 466 */ return new FileReader(f);
/* */ }
/* */
/* */ public void setAllConstraintsDeferred(boolean sessionLevel)
/* */ throws SQLException
/* */ {
/* 478 */ PreparedStatement ps = null;
/* */ try
/* */ {
/* 481 */ ps = getConnection().prepareStatement(sessionLevel ? "alter session set constraints = deferred" : "set constraints all deferred");
/* */
/* 484 */ ps.executeUpdate();
/* */ }
/* */ finally
/* */ {
/* 488 */ closeStatement(ps);
/* 489 */ closeConnection();
/* */ }
/* */ }
/* */
/* */ public void setAllConstraintsImmediate(boolean sessionLevel)
/* */ throws SQLException
/* */ {
/* 501 */ PreparedStatement ps = null;
/* */ try
/* */ {
/* 504 */ ps = getConnection().prepareStatement(sessionLevel ? "alter session set constraints = immediate" : "set constraints all immediate");
/* */
/* 507 */ ps.executeUpdate();
/* */ }
/* */ finally
/* */ {
/* 511 */ closeStatement(ps);
/* 512 */ closeConnection();
/* */ }
/* */ }
/* */ }
/* Location: /home/oracle/coa/cp.ear/cp.ear_orginal/cp-server.jar
* Qualified Name: com.cedar.cp.ejb.impl.base.AbstractDAO
* JD-Core Version: 0.6.0
*/
答案 0 :(得分：4)
您的异常似乎表明您使用的是H2 JDBC JAR，而不是Oracle。包括Oracle JDBC JAR，然后通过以下方式连接：
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection connection = null;
connection = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:SID","username","password");
connection.close();
以下是您可以下载12c驱动程序的链接：
http://www.oracle.com/technetwork/database/features/jdbc/jdbc-drivers-12c-download-1958347.html