Mysql批量插入executeBatch测试

第一次：没有设置手动提交，jdbc自动提交，代码如下：

public void test23(){

Connection conn = new ConnectionManager().newConnection();

PreparedStatement ps = null;

try {

String sql = "insert into uuidtest(uuid) values(?)";

ps = conn.prepareStatement(sql);

long start = System.currentTimeMillis();

for (int i = 0; i < 10000; i++) {

String uuid = UUID.randomUUID().toString();

System.out.println(uuid);

ps.setString(1, uuid);

ps.addBatch();

}

ps.executeBatch();

long end = System.currentTimeMillis();

System.out.println(end-start);

} catch (SQLException e) {

e.printStackTrace();

} finally {

if (ps != null) {

try {

ps.close();

} catch (SQLException e) {

e.printStackTrace();

}

}

if (conn != null) {

try {

conn.close();

} catch (SQLException e) {

e.printStackTrace();

}

}

}

}

执行时间为：165766毫秒

第二次：设置手动提交，程序最后手动提交，代码如下：

public void test23(){

Connection conn = new ConnectionManager().newConnection();

PreparedStatement ps = null;

try {

conn.setAutoCommit(false);

String sql = "insert into uuidtest(uuid) values(?)";

ps = conn.prepareStatement(sql);

long start = System.currentTimeMillis();

for (int i = 0; i < 10000; i++) {

String uuid = UUID.randomUUID().toString();

System.out.println(uuid);

ps.setString(1, uuid);

ps.addBatch();

}

ps.executeBatch();

conn.commit();

long end = System.currentTimeMillis();

System.out.println(end-start);

} catch (SQLException e) {

e.printStackTrace();

} finally {

if (ps != null) {

try {

ps.close();

} catch (SQLException e) {

e.printStackTrace();

}

}

if (conn != null) {

try {

conn.close();

} catch (SQLException e) {

e.printStackTrace();

}

}

}

}

执行时间为：1135毫秒

第三次：设置手动提交，程序最后手动提交，每一千次执行缓存的sql语句并清空缓存，代码如下：

public void test23(){

Connection conn = new ConnectionManager().newConnection();

PreparedStatement ps = null;

try {

conn.setAutoCommit(false);

String sql = "insert into uuidtest(uuid) values(?)";

ps = conn.prepareStatement(sql);

long start = System.currentTimeMillis();

for (int i = 0; i < 10000; i++) {

String uuid = UUID.randomUUID().toString();

System.out.println(uuid);

ps.setString(1, uuid);

ps.addBatch();

if(i%1000==0){

ps.executeBatch();

ps.clearBatch();

}

}

conn.commit();

long end = System.currentTimeMillis();

System.out.println(end-start);

} catch (SQLException e) {

e.printStackTrace();

} finally {

if (ps != null) {

try {

ps.close();

} catch (SQLException e) {

e.printStackTrace();

}

}

if (conn != null) {

try {

conn.close();

} catch (SQLException e) {

e.printStackTrace();

}

}

}

}

执行时间为：993毫秒