jdbc oracle clob

2022-06-06 10:32:19
import java.io.BufferedReader;

import java.io.Reader;

import java.io.Writer;

import java.sql.CallableStatement;

import java.sql.Clob;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import 
java.sql.SQLException;
 
public 
class Test {

    private 
static Connection getConn() {

        String driver = "oracle.jdbc.driver.OracleDriver";

        // String url = "jdbc:oracle:thin:@127.0.0.1:1521:pdbmyoracle";//

        // 设置连接字符串

        String url = "jdbc:oracle:thin:@//127.0.0.1:1521/pdbmyoracle";

        String username = "abc";// 用户名

        String password = "abc";// 密码

        Connection conn = null; // 创建数据库连接对象

        try 
{

            Class.forName(driver);

            conn = DriverManager.getConnection(url, username, password);

        } catch 
(ClassNotFoundException e) {

            e.printStackTrace();

        } catch 
(SQLException e) {

            e.printStackTrace();

        }
 
        return 
conn;

    }
 
    private 
static void query() {

        Connection conn = getConn();

        String sql = "select * from a";

        PreparedStatement pstmt;

        try 
{

            pstmt = conn.prepareStatement(sql);

            // 建立一个结果集,用来保存查询出来的结果
 
            ResultSet rs = pstmt.executeQuery();
 
            while 
(rs.next()) {

                String id = rs.getString("id");

                System.out.println(id);
 
                Clob clob = rs.getClob("content");

                Reader reader = clob.getCharacterStream();

                BufferedReader br = new 
BufferedReader(reader);

                StringBuffer sb = new 
StringBuffer();

                String s = "";

                while 
((s = br.readLine()) != null) {

                    sb.append(s);

                    s = br.readLine();

                }

                System.out.println(sb.toString());

            }

            rs.close();

            pstmt.close();

            conn.close();

        } catch 
(Exception e) {

            e.printStackTrace();

        }

    }
 
    public 
static void callProcedure() {

        try 
{

            Connection con = getConn();

            CallableStatement cs = con.prepareCall("{call insert_a(?)}");

            Clob clob = con.createClob();

            Writer writer = clob.setCharacterStream(1);

            writer.write("106148,107161,104672,106903,105009,107667,104512,106715,105010,103265,104694,104695,104697,105053,108169,104189");

            writer.close();

            cs.setClob(1, clob);

            boolean 
b = cs.execute();

            System.out.println(b);

        } catch 
(Exception e) {

            e.printStackTrace();

        }

    }
 
    public 
static void main(String[] args) {

        callProcedure();

    }
 
}
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