Java调用 Oracle 函数,一个函数本质上一个返回一个结果的存储过程,这个例子示范了怎么调用有in、out和in/out参数的函数。
Java调用 Oracle 函数,一个函数本质上一个返回一个结果的存储过程,这个例子示范了怎么调用有in、out和in/out参数的函数。
大同小异的方法。
CallableStatement cs;
try {
// 调用一个没有参数的函数; 函数返回 a VARCHAR
// 预处理callable语句
cs = connection.prepareCall("{? = call myfunc}");
// 注册返回值类型
cs.registerOutParameter(1, i);
// Execute and retrieve the returned value
cs.execute();
String retValue = cs.getString(1);
// 调用有一个in参数的函数; the function returns a VARCHAR
cs = connection.prepareCall("{? = call myfuncin(?)}");
// Register the type of the return value
cs.registerOutParameter(1, Types.VARCHAR);
// Set the value for the IN parameter
cs.setString(2, "a string");
// Execute and retrieve the returned value
cs.execute();
retValue = cs.getString(1);
// 调用有一个out参数的函数; the function returns a VARCHAR
cs = connection.prepareCall("{? = call myfuncout(?)}");
// Register the types of the return value and OUT parameter
cs.registerOutParameter(1, Types.VARCHAR);
cs.registerOutParameter(2, Types.VARCHAR);
// Execute and retrieve the returned values
cs.execute();
retValue = cs.getString(1); // return value
String outParam = cs.getString(2); // OUT parameter
// 调用有一个in/out参数的函数; the function returns a VARCHAR
cs = connection.prepareCall("{? = call myfuncinout(?)}");
// Register the types of the return value and OUT parameter
cs.registerOutParameter(1, Types.VARCHAR);
cs.registerOutParameter(2, Types.VARCHAR);
// Set the value for the IN/OUT parameter
cs.setString(2, "a string");
// Execute and retrieve the returned values
cs.execute();
retValue = cs.getString(1); // return value
outParam = cs.getString(2); // IN/OUT parameter
} catch (SQLException e) {
}
相关阅读:
Oracle函数之Replace()
Oracle函数大全
Oracle函数之case和decode的用法区别及性能比较
Oracle函数和存储过程简单实例
Oracle函数 通过秒数或分钟数获取时间段

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