關於C3P0連接池的初始應用

1. //初始應用
   import java.beans.PropertyVetoException;
2. import java.sql.Connection;
3. import java.sql.SQLException;
4. 
   
5. import cn.wobushisheng.Setting;
6. 
   
7. import com.nikandaosmle.htm.HtmConfig;
8. import com.mchange.v2.c3p0.ComboPooledDataSource;
9. import com.mchange.v2.c3p0.DataSources;
10. 
    
11. public class DBFactoryPool {
12. 
    
13.     ComboPooledDataSource cpds = new ComboPooledDataSource();
14.     HtmConfig config = (HtmConfig) Setting.appconfig;
15.     String driverURL = config.jdbcDriver;
16.     String connURL = config.jdbcUrl;
17.     String user = config.jdbcUser;
18.     String passwd = config.dbcPaswd;
19.     String maxidle = config.jdbcMaxIdel;
20. 
    
21.     public Connection getConnection() {
22.         Connection conn = null;
23.         try {
24.             cpds.setDriverClass(driverURL);
25.             cpds.setJdbcUrl(connURL);
26.             cpds.setUser(user);
27.             cpds.setPassword(passwd);
28.             cpds.setMaxIdleTime(Integer.valueOf(maxidle));
29.             cpds.setMaxStatements(0);
30.             conn = cpds.getConnection();
31.         } catch (PropertyVetoException e) {
32.             e.printStackTrace();
33.         } catch (SQLException e) {
34.             e.printStackTrace();
35.         }
36.         return conn;
37.     }
38. 
    
39.     public void destory() {
40.         try {
41.             DataSources.destroy(cpds);
42.         } catch (SQLException e) {
43.             e.printStackTrace();
44.         }
45.     }
46. }

上面是這個連接類，下面是具體。

2. import java.sql.Connection;
3. import java.sql.SQLException;
4. import java.sql.Statement;
6. public class M_UserManagerImp implements M_UserManager {
8.     public void save(Operator operator) {
9.         Connection conn = null;
10.         Statement sta = null;
11.         DBFactoryPool dbpool;
12.         dbpool = new DBFactoryPool();
13.         try {
14.             conn = dbpool.getConnection();
15.             sta = conn.createStatement();
16.             // 標籤沒INSERT
17.             StringBuffer sql = new StringBuffer(
18.                     "insert into m_user_info(USER_ID,USER_NAME,USER_ROLE,PASSWORD) values(");
19.             sql.append("'").append(operator.getLoginid()).append("',");
20.             sql.append("'").append(operator.getName()).append("',");
21.             sql.append(operator.getRoleno()).append(",");
22.             sql.append("'").append(operator.getPasswd()).append("')");
23.             sta.executeUpdate(sql.toString());
24.             conn.commit();
25.             conn.close();
26.         } catch (SQLException e) {
27.             e.printStackTrace();
28.         } finally {
29.             dbpool.destory();
30.         }
32.     }
33. }

NICE