在JAVA中连接Oracle数据库

最新推荐文章于 2023-04-20 10:14:06 发布

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最新推荐文章于 2023-04-20 10:14:06 发布

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分类专栏： java相关文章标签： Oracle Java JDBC SQL C

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本文提供了一个使用Java连接Oracle数据库的示例代码，演示了如何加载JDBC驱动、建立数据库连接、执行SQL查询并处理结果集的过程。

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在JAVA中连接Oracle数据库
import java.sql.*;
public class OracleTest {
private final String oracleDriverName = "oracle.jdbc.driver.OracleDriver";

//以下使用的Test就是Oracle里的表空间
private final String oracleUrlToConnect ="jdbc:oracle:thin:@192.168.0.36:1521:Test";
private Connection myConnection = null;
/**
* To load the jdbc driver
*
*/
public OracleTest()
{
try
{
Class.forName(oracleDriverName);
}catch(ClassNotFoundException ex)
{
System.out.println(getErrorMessage(ex,"The Driver loaded error,please contact to your Software Designer!").toString());
}
}

public StringBuffer getErrorMessage(Exception ex,String alarmMessage)
{
StringBuffer errorStringBuffer = new StringBuffer();
errorStringBuffer.append(alarmMessage);
errorStringBuffer.append(ex.getMessage());
return errorStringBuffer;
}

/**
* getConnection method
* @return Connection
*/
public Connection getConnection()
{
try
{
this.myConnection = DriverManager.getConnection(oracleUrlToConnect,"Fane","201");

}catch(Exception ex)
{
System.out.println(getErrorMessage(ex,"Can not get connection,please contact to your Software Designer!").toString());
}

return this.myConnection;

}

public static void main(String[] args) {
OracleTest myOracleTest = new OracleTest();
try
{
Connection myConnection = myOracleTest.getConnection();
System.out.println("Now begin to excute.............");

PreparedStatement myPreparedStatement = myConnection.prepareStatement("select area_id, area_name,ip_address,tel,area_type,pc_id from c_area_info");
//myPreparedStatement.setInt(1,2);
ResultSet myResultSet = myPreparedStatement.executeQuery();
StringBuffer myStringBuffer = new StringBuffer();

while(myResultSet.next())
{

myStringBuffer.append(myResultSet.getInt("area_id")+" ");
myStringBuffer.append(myResultSet.getString("area_name")+" ");
myStringBuffer.append(myResultSet.getString("ip_address")+" ");
myStringBuffer.append(myResultSet.getString("tel")+" ");
myStringBuffer.append(myResultSet.getInt("area_type")+" ");
myStringBuffer.append(myResultSet.getInt("pc_id")+" ");
}
System.out.println(myStringBuffer.toString());
//System.out.println(new String(myStringBuffer.toString().getBytes("ISO-8859-1"),"GBK"));
}catch(Exception ex)
{
System.out.println(myOracleTest.getErrorMessage(ex,"Application error,please contact to your Software Designer!").toString());
}

}

}