JDBC CallableStatement – ストアドプロシージャのOUTパラメータの例
ストアドプロシージャはOUTパラメータを返します。
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JDBC経由で登録
`CallableStatement.registerOutParameter(index、sqlType)`です。
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`CallableStatement.getDataType(index)`で返す.
コードスニペットを見る
….//getDBUSERByUserId is a stored procedure
String getDBUSERByUserIdSql = “{call getDBUSERByUserId(?,?,?,?)}”;
callableStatement = dbConnection.prepareCall(getDBUSERByUserIdSql);
callableStatement.setInt(1, 10);
callableStatement.registerOutParameter(2, java.sql.Types.VARCHAR);
callableStatement.registerOutParameter(3, java.sql.Types.VARCHAR);
callableStatement.registerOutParameter(4, java.sql.Types.DATE);
//execute getDBUSERByUserId store procedure
callableStatement.executeUpdate();
String userName = callableStatement.getString(2);
String createdBy = callableStatement.getString(3);
Date createdDate = callableStatement.getDate(4);
=== JDBC CallableStatementの例 OUTパラメータの完全なJDBCの `CallableStatement`の例を参照してください。 === 1.ストアドプロシージャ INパラメータとOUTパラメータを持つOracleデータベースのストアド・プロシージャ。 その後、JDBC経由で呼び出します。
CREATE OR REPLACE PROCEDURE getDBUSERByUserId(
p
userid IN DBUSER.USER
ID%TYPE,
o
username OUT DBUSER.USERNAME%TYPE,
o
createdby OUT DBUSER.CREATED
BY%TYPE,
o
date OUT DBUSER.CREATED__DATE%TYPE)
IS
BEGIN
SELECT USERNAME , CREATED__BY, CREATED__DATE INTO o__username, o__createdby, o__date from DBUSER WHERE USER__ID = p__userid;
END;/….
2. CallableStatement経由でストアドプロシージャを呼び出します.
JDBCの例では、 `CallableStatement`を介してストアドプロシージャを呼び出します。
File:JDBCCallableStatementOUTParameterExample.java
package com.mkyong.jdbc; import java.sql.CallableStatement; import java.sql.Date; import java.sql.DriverManager; import java.sql.Connection; import java.sql.SQLException; public class JDBCCallableStatementOUTParameterExample { private static final String DB__DRIVER = "oracle.jdbc.driver.OracleDriver"; private static final String DB__CONNECTION = "jdbc:oracle:thin:@localhost:1521:MKYONG"; private static final String DB__USER = "user"; private static final String DB__PASSWORD = "password"; public static void main(String[]argv) { try { callOracleStoredProcOUTParameter(); } catch (SQLException e) { System.out.println(e.getMessage()); } } private static void callOracleStoredProcOUTParameter() throws SQLException { Connection dbConnection = null; CallableStatement callableStatement = null; String getDBUSERByUserIdSql = "{call getDBUSERByUserId(?,?,?,?)}"; try { dbConnection = getDBConnection(); callableStatement = dbConnection.prepareCall(getDBUSERByUserIdSql); callableStatement.setInt(1, 10); callableStatement.registerOutParameter(2, java.sql.Types.VARCHAR); callableStatement.registerOutParameter(3, java.sql.Types.VARCHAR); callableStatement.registerOutParameter(4, java.sql.Types.DATE); //execute getDBUSERByUserId store procedure callableStatement.executeUpdate(); String userName = callableStatement.getString(2); String createdBy = callableStatement.getString(3); Date createdDate = callableStatement.getDate(4); System.out.println("UserName : " + userName); System.out.println("CreatedBy : " + createdBy); System.out.println("CreatedDate : " + createdDate); } catch (SQLException e) { System.out.println(e.getMessage()); } finally { if (callableStatement != null) { callableStatement.close(); } if (dbConnection != null) { dbConnection.close(); } } } private static Connection getDBConnection() { Connection dbConnection = null; try { Class.forName(DB__DRIVER); } catch (ClassNotFoundException e) { System.out.println(e.getMessage()); } try { dbConnection = DriverManager.getConnection( DB__CONNECTION, DB__USER,DB__PASSWORD); return dbConnection; } catch (SQLException e) { System.out.println(e.getMessage()); } return dbConnection; } }
完了しました。