Mega Code Archive
Demo PreparedStatement Set Character Stream
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import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.Reader;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
public class DemoPreparedStatementSetCharacterStream {
public static Connection getConnection() throws Exception {
String driver = "org.gjt.mm.mysql.Driver";
String url = "jdbc:mysql://localhost/databaseName";
String username = "root";
String password = "root";
Class.forName(driver);
Connection conn = DriverManager.getConnection(url, username, password);
return conn;
}
public static void main(String[] args)throws Exception {
String fileName = "charDataFile.txt";
Reader fileReader = null;
long fileLength = 0;
Connection conn = null;
PreparedStatement pstmt = null;
try {
File file = new File(fileName);
fileLength = file.length();
fileReader = (Reader) new BufferedReader(new FileReader(file));
System.out.println("fileName=" + fileName);
System.out.println("fileLength=" + fileLength);
conn = getConnection();
// begin transaction
conn.setAutoCommit(false);
// prepare SQL query for inserting a new row using SetCharacterStream()
String query = "insert into char_stream_table (id, char_stream_column) values(?, ?)";
// create PrepareStatement object
pstmt = conn.prepareStatement(query);
pstmt.setString(1, fileName);
pstmt.setCharacterStream(2, fileReader, (int) fileLength);
// execute query, and return number of rows created
int rowCount = pstmt.executeUpdate();
System.out.println("rowCount=" + rowCount);
// end transaction
conn.commit();
} finally {
pstmt.close();
conn.close();
}
}
}
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