【oracle】 java 写入blob字段

柔情只为你懂 2024-03-22 20:42 30阅读 0赞

import org.junit.jupiter.api.Test;
    import java.io.FileInputStream;
    import java.io.InputStream;
    import java.sql.Blob;
    import java.sql.Connection;
    import java.sql.DriverManager;
    import java.sql.PreparedStatement;
    
    /**
     * @author: lisai
     * @create: 2023-06-16 13:15
     * @Description:
     */
    public class OracleBlobInertTest {
        
        private static final String DRIVER = "oracle.jdbc.driver.OracleDriver";
        private static final String URL = "jdbc:oracle:thin:@xxx.xxx.xxx.xxx:1521:CBS";
        private static final String USER = "user";
        private static final String PSWD = "123456";
    
        @Test
        public void test01() {
        
            //-- 以下为连接Oracle数据库的四大参数
            Connection conn = null;
            PreparedStatement pstmt = null;
    
            try {
        
                Class.forName(DRIVER);
                conn = DriverManager.getConnection(URL, USER, PSWD);
    
                // String insertSql = "insert into cdcuser.test_type_meta_basic(number_type13,blob_type) values(?,?)";
                String updateSql = "update cdcuser.test_type_meta_basic set blob_type=? where number_type13=?";
                pstmt = conn.prepareStatement(updateSql);
    
                // 方式一:文件转byte数组
                InputStream is1 = new FileInputStream("D:\\test.xml");
                byte[] arr = new byte[is1.available()];
                is1.read(arr);
                Blob blob = conn.createBlob();
                blob.setBytes(1, arr);
                pstmt.setLong(2, 888);
                pstmt.setBlob(1, blob);
                pstmt.execute();
    
    //            // 方式二：文件直接给blob字段
    //            InputStream is2 = new FileInputStream("c:\\temp1\\picturesShow1022final_src_210808.rar");
    //            pstmt.setLong(1, 2);
    //            pstmt.setBlob(2, is2);
    //            pstmt.executeUpdate();
    
    //            // 方式三：设置blob字段的二进制流
    //            InputStream is3 = new FileInputStream("c:\\temp1\\media-cool-master.zip");
    //            pstmt.setLong(1, 3);
    //            pstmt.setBinaryStream(2, is3);
    //            pstmt.executeUpdate();
    
                System.out.println("完成写入");
            } catch (Exception e) {
        
                e.printStackTrace();
            } finally {
        
                try {
        
                    pstmt.close();
                    conn.close();
                } catch (Exception e) {
        
                    e.printStackTrace();
                }
            }
        }
    }