blob: 0635e046cf96cbc9742561f5438b8af9cd51cd94 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
|
package cn.ac.iie.dao;
import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.pool.DruidPooledConnection;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Properties;
/**
* Druid连接信息
*
* @author antlee
* @date 2018/8/20
*/
public class DbConnect {
private static DruidDataSource dataSource = null;
private static DbConnect dbConnect = null;
private static Properties props = new Properties();
static {
getDbConnect();
}
private static void getDbConnect() {
try {
if (dataSource == null) {
dataSource = new DruidDataSource();
props.load(DbConnect.class.getClassLoader().getResourceAsStream("clickhouse.properties"));
//设置连接参数
dataSource.setUrl("jdbc:clickhouse://" + props.getProperty("db.id"));
dataSource.setDriverClassName(props.getProperty("drivers"));
dataSource.setUsername(props.getProperty("mdb.user"));
dataSource.setPassword(props.getProperty("mdb.password"));
//配置初始化大小、最小、最大
dataSource.setInitialSize(Integer.parseInt(props.getProperty("initialsize")));
dataSource.setMinIdle(Integer.parseInt(props.getProperty("minidle")));
dataSource.setMaxActive(Integer.parseInt(props.getProperty("maxactive")));
//连接泄漏监测
dataSource.setRemoveAbandoned(true);
dataSource.setRemoveAbandonedTimeout(30);
dataSource.setDefaultAutoCommit(false);
//配置获取连接等待超时的时间
dataSource.setMaxWait(30000);
//配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒
dataSource.setTimeBetweenEvictionRunsMillis(2000);
//防止过期
dataSource.setValidationQuery("SELECT 1");
dataSource.setTestWhileIdle(true);
dataSource.setTestOnBorrow(true);
dataSource.setKeepAlive(true);
}
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 数据库连接池单例
*
* @return dbConnect
*/
public static synchronized DbConnect getInstance() {
if (null == dbConnect) {
dbConnect = new DbConnect();
}
return dbConnect;
}
/**
* 返回druid数据库连接
*
* @return 连接
* @throws SQLException sql异常
*/
public DruidPooledConnection getConnection() throws SQLException {
return dataSource.getConnection();
}
/**
* 清空PreparedStatement、Connection对象，未定义的置空。
*
* @param pstmt PreparedStatement对象
* @param connection Connection对象
*/
public void clear(PreparedStatement pstmt, Connection connection) {
try {
if (pstmt != null) {
pstmt.close();
}
if (connection != null) {
connection.close();
}
} catch (SQLException e) {
e.printStackTrace();
}
}
}
|
