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How to insert an image in to Oracle database using Java program?
To hold an image in Oracle database generally blob type is used. Therefore, make sure that you have a table created with a blob datatype as:
Name Null? Type ----------------------------------------- -------- ---------------------------- NAME VARCHAR2(255) IMAGE BLOB
To insert an image in to Oracle database, follow the steps given below:
Step 1: Connect to the database
You can connect to a database using the getConnection() method of the DriverManager class
Connect to the Oracle database by passing the Oracle URL which is jdbc:oracle:thin:@localhost:1521/xe (for express edition), username and password as parameters to the getConnection() method.
String oracleUrl = "jdbc:oracle:thin:@localhost:1521/xe"; Connection con = DriverManager.getConnection(oracleUrl, "user_name", "password");
Step 2: Create a Prepared statement
Create a PreparedStatement object using the prepareStatement() method of the Connection interface. To this method pass the insert query (with place holders) as a parameter.
PreparedStatement pstmt = con.prepareStatement("INSERT INTO MyTable VALUES(?, ?)");Step 3: Set values to the place holders
Set the values to the place holders using the setter methods of the PreparedStatement interface. Chose the methods according to the datatype of the column. For Example if the column is of VARCHAR type use setString() method and if it is of INT type you can use setInt() method.
And if it is of Blob type you can set value to it using the setBinaryStream() or setBlob() methods. To these methods pass an integer variable representing the parameter index and an object of InputStream class as parameters.
pstmt.setString(1, "sample image");
//Inserting Blob type
InputStream in = new FileInputStream("E:\images\cat.jpg");
pstmt.setBlob(2, in);Step 4: Execute the statement
Execute the above created PreparedStatement object using the execute() method of the PreparedStatement interface.
Example
import java.io.FileInputStream;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
public class InsertImageToOracleDB {
public static void main(String args[]) throws Exception{
//Registering the Driver
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver ());
//Getting the connection
String oracleUrl = "jdbc:oracle:thin:@localhost:1521/xe";
Connection con = DriverManager.getConnection(oracleUrl, "system", "password");
System.out.println("Connected to Oracle database.....");
PreparedStatement pstmt = con.prepareStatement("INSERT INTO MyTable VALUES(?,?)");
pstmt.setString(1, "sample image");
//Inserting Blob type
InputStream in = new FileInputStream("E:\images\cat.jpg");
pstmt.setBlob(2, in);
//Executing the statement
pstmt.execute();
System.out.println("Record inserted");
}
}Output
Connected to Oracle database..... Record inserted.....
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