show VARIABLES like '%max_allowed_packet%'
JDBC代码如下:
package insert;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Date;
import com.mysql.jdbc.PreparedStatement;
public
class
InsertTest {
public
static
void
main(String[] args) throws ClassNotFoundException, SQLException {
final String url =
"jdbc:mysql://127.0.0.1/teacher"
;
final String name =
"com.mysql.jdbc.Driver"
;
final String user =
"root"
;
final String password =
"123456"
;
Connection conn =
null
;
Class.forName(name);
//指定连接类型
conn = DriverManager.getConnection(url, user, password);
//获取连接
if
(conn!=
null
) {
System.
out
.println(
"获取连接成功"
);
insert(conn);
}
else
{
System.
out
.println(
"获取连接失败"
);
}
}
public
static
void
insert(Connection conn) {
// 开始时间
Long begin =
new
Date().getTime();
// sql前缀
String prefix =
"INSERT INTO t_teacher (id,t_name,t_password,sex,description,pic_url,school_name,regist_date,remark) VALUES "
;
try
{
// 保存sql后缀
StringBuffer suffix =
new
StringBuffer();
// 设置事务为非自动提交
conn.setAutoCommit(
false
);
// 比起st,pst会更好些
PreparedStatement pst = (PreparedStatement) conn.prepareStatement(
""
);
//准备执行语句
// 外层循环,总提交事务次数
for
(
int
i = 1; i <= 100; i++) {
suffix =
new
StringBuffer();
// 第j次提交步长
for
(
int
j = 1; j <= 100000; j++) {
// 构建SQL后缀
suffix.append(
"('"
+ uutil.UUIDUtil.getUUID()+
"','"
+i*j+
"','123456'"
+
",'男'"
+
",'教师'"
+
",'www.bbk.com'"
+
",'XX大学'"
+
",'"
+
"2016-08-12 14:43:26"
+
"','备注'"
+
"),"
);
}
// 构建完整SQL
String sql = prefix + suffix.substring(0, suffix.length() - 1);
// 添加执行SQL
pst.addBatch(sql);
// 执行操作
pst.executeBatch();
// 提交事务
conn.commit();
// 清空上一次添加的数据
suffix =
new
StringBuffer();
}
// 头等连接
pst.close();
conn.close();
}
catch
(SQLException e) {
e.printStackTrace();
}
// 结束时间
Long end =
new
Date().getTime();
// 耗时
System.
out
.println(
"1000万条数据插入花费时间 : "
+ (end - begin) / 1000 +
" s"
);
System.
out
.println(
"插入完成"
);
}
}