我已經在java中編寫了下面的代碼。通過java執行pl sql塊的問題
package demo;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Types;
public class Sample {
private Connection c = null;
public Sample()
{
try {
c = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:XE", "system", "jboss");
String plsql = ""+
"declare"+
"x number;"+
"begin "+
"select HEADCOUNT FROM PROJECT where deptid=1;"+
"end;";
CallableStatement cs = c.prepareCall(plsql);
//cs.registerOutParameter(0, Types.INTEGER);
cs.execute();
System.out.println("Result is "+cs.getInt(1));
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static void main(String[] args)
{
Sample z = new Sample();
}
}
我只想探索一下我可以通過java來執行plsql塊的機制。上面的 只是簡單的查詢。 上面的Java代碼執行,我得到錯誤的
java.sql.SQLException: Invalid SQL type: sqlKind = UNINITIALIZED
at oracle.jdbc.driver.T4CCallableStatement.doOall8(T4CCallableStatement.java:75)
at oracle.jdbc.driver.T4CCallableStatement.executeForRows(T4CCallableStatement.java:1043)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1336)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3613)
at oracle.jdbc.driver.OraclePreparedStatement.execute(OraclePreparedStatement.java:3714)
at oracle.jdbc.driver.OracleCallableStatement.execute(OracleCallableStatement.java:4755)
at oracle.jdbc.driver.OraclePreparedStatementWrapper.execute(OraclePreparedStatementWrapper.java:1378)
at demo.Sample.<init>(Sample.java:26)
at demo.Sample.main(Sample.java:36)
讓我知道如果有執行這樣的PL/SQL塊之前所需的任何以前的設置。
你認爲怎麼樣' 「申報」 + 「x'給你? –
又見https://stackoverflow.com/questions/36447240/invalid-sql-type-sqlkind-uninitialized-error-is-shown –
爲什麼要用mysql標記,如果你連接到Oracle? –