简单的批量读取外部insert文并插入DB
package com.tongxiang.item.base.dao; import java.io.BufferedReader; import java.io.File; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.IOException; import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException; import java.sql.Statement; import java.util.Arrays; import org.apache.commons.lang.StringUtils; public class ImportFromSql { private static final String URL = "jdbc:oracle:thin:@xxx.xxx.xxx.xxx:1521:orcl"; private static final String USER = "user"; private static final String PASSWORD = "password"; private static Connection CONN = null; static { try { Class.forName("oracle.jdbc.driver.OracleDriver"); CONN = DriverManager.getConnection(URL, USER, PASSWORD); } catch (SQLException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } public static void main(String[] args) throws Exception { try { // insert 文件数据格式 // C:\\TEST.sql // -------------------------- // insert into (...) values (...); // insert into (...) values (...); // insert into (...) values (...); // -------------------------- String sqlFile = "C:\\TEST.sql"; // 每次批处理数目 int batchCnt = 100; insertSqlBacth(CONN, sqlFile, batchCnt); } finally { CONN.close(); } } /** * 传入连接来执行 SQL 脚本文件,这样可与其外的数据库操作同处一个事物中 * * @param 数据库连接 * @param 文件路径 * @param 每次批处理数 * */ public static void insertSqlBacth(Connection conn, String sqlFile, int batchCnt) throws Exception { Statement stmt = null; //从给定位置获取文件 File file = new File(sqlFile); BufferedReader reader = null; try { reader = new BufferedReader(new FileReader(file)); //每次读取文件的缓存 String temp = null; int i = 0; int mod = 0; stmt = conn.createStatement(); while ((temp = reader.readLine()) != null) { i++; stmt.addBatch(StringUtils.chomp(temp.trim(), ";")); mod = i % batchCnt; if (mod == 0) { int[] rows = stmt.executeBatch(); conn.commit(); System.out.println("Row count:" + Arrays.toString(rows)); stmt.close(); stmt = conn.createStatement(); } } if (mod != 0) { int[] rows = stmt.executeBatch(); conn.commit(); System.out.println("Row count:" + Arrays.toString(rows)); stmt.close(); } } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { //关闭文件流 if (reader != null) { try { reader.close(); } catch (IOException e) { e.printStackTrace(); } } } } }
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