【Java/Oracle】怎样往clob字段中写入数据
有一个表是这样的:
create table emp430_1( id number(12), name nvarchar2(20), profile clob, primary key(id) );
其中profile是clob字段。
往这个字段连续塞入数据的程序如下:
package com.hy.lab.clob; import java.sql.*; import java.util.ArrayList; import java.util.List; class Emp{ long id; String name; String profile; public Emp(long id,String name,String profile){ this.id=id; this.name=name; this.profile=profile; } } public class ClobWriter { //-- 以下为连接Oracle数据库的四大参数 private static final String DRIVER = "oracle.jdbc.driver.OracleDriver"; private static final String URL = "jdbc:oracle:thin:@127.0.0.1:1521:orcl"; private static final String USER = "luna"; private static final String PSWD = "1234"; public static void main(String[] args){ List<Emp> ls=new ArrayList<>(); ls.add(new Emp(1,"武松","双刀客")); ls.add(new Emp(2,"李逵","双斧头客")); ls.add(new Emp(3,"董平","双枪将")); ls.add(new Emp(4,"鲁达","扁铲发明者")); Connection conn = null; PreparedStatement pstmt = null; try { Class.forName(DRIVER); conn = DriverManager.getConnection(URL, USER, PSWD); conn.setAutoCommit(false); String insertSql="insert into emp430_1(id,name,profile) values(?,?,?)"; pstmt = conn.prepareStatement(insertSql); for(Emp emp:ls){ pstmt.setLong(1,emp.id); pstmt.setString(2,emp.name); Clob clob=conn.createClob(); clob.setString(1,emp.profile); pstmt.setClob(3,clob); pstmt.addBatch(); } pstmt.executeBatch(); conn.commit(); System.out.println("完成写入"); } catch (Exception e) { e.printStackTrace(); } finally { try { pstmt.close(); conn.close(); } catch (Exception e) { e.printStackTrace(); } } } }
塞入完成后看表数据:
SQL> select * from emp430_1; ID NAME ---------- ---------------------------------------- PROFILE -------------------------------------------------------------------------------- 1 武松 双刀客 2 李逵 双斧头客 3 董平 双枪将 ID NAME ---------- ---------------------------------------- PROFILE -------------------------------------------------------------------------------- 4 鲁达 扁铲发明者
确如预期。
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