JAVA里怎么开始一个新的事务啊？__System_println_stmt_COFFEES_uprs_

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JAVA里怎么开始一个新的事务啊？

来源: 互联网发布时间：2015-01-24

本文导语: 如题。还有，JDBC默认的事务级别是什么？ | 该你个完整的例子 import java.sql.*; public class BatchUpdate { public static void main(String args[]) throws SQLException { ResultSet rs = null; PreparedStatement p...

如题。
还有，JDBC默认的事务级别是什么？

该你个完整的例子
import java.sql.*;
public class BatchUpdate {
public static void main(String args[]) throws SQLException {

ResultSet rs = null;
PreparedStatement ps = null;
String url = "jdbc:mySubprotocol:myDataSource";
Connection con;
Statement stmt;
try {
Class.forName("myDriver.ClassName");
} catch(java.lang.ClassNotFoundException e) {
System.err.print("ClassNotFoundException: ");
System.err.println(e.getMessage());
}
try {
con = DriverManager.getConnection(url,
"myLogin", "myPassword");
con.setAutoCommit(false);
stmt = con.createStatement();
stmt.addBatch("INSERT INTO COFFEES " +
"VALUES('Amaretto', 49, 9.99, 0, 0)");
stmt.addBatch("INSERT INTO COFFEES " +
"VALUES('Hazelnut', 49, 9.99, 0, 0)");
stmt.addBatch("INSERT INTO COFFEES " +
"VALUES('Amaretto_decaf', 49, 10.99, 0, 0)");
stmt.addBatch("INSERT INTO COFFEES " +
"VALUES('Hazelnut_decaf', 49, 10.99, 0, 0)");
int [] updateCounts = stmt.executeBatch();
con.commit();
con.setAutoCommit(true);
ResultSet uprs = stmt.executeQuery("SELECT * FROM COFFEES");
System.out.println("Table COFFEES after insertion:");
while (uprs.next()) {
String name = uprs.getString("COF_NAME");
int id = uprs.getInt("SUP_ID");
float price = uprs.getFloat("PRICE");
int sales = uprs.getInt("SALES");
int total = uprs.getInt("TOTAL");
System.out.print(name + "   " + id + "   " + price);
System.out.println("   " + sales + "   " + total);
}
uprs.close();
stmt.close();
con.close();
} catch(BatchUpdateException b) {
System.err.println("-----BatchUpdateException-----");
System.err.println("SQLState:  " + b.getSQLState());
System.err.println("Message:  " + b.getMessage());
System.err.println("Vendor:  " + b.getErrorCode());
System.err.print("Update counts:  ");
int [] updateCounts = b.getUpdateCounts();
for (int i = 0; i