com.sh.pool.db

类 ConnectionServlet_21

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

com.sh.pool.db.ConnectionServlet_21

所有已实现的接口:

java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public class ConnectionServlet_21
extends javax.servlet.http.HttpServlet

This is a simple servlet that holds a global connection pool. The Servlet context is used to store a named attribute (this servlet) so that other servlets have access to the connection pool

另请参阅:

序列化表格

字段概要

字段

限定符和类型	字段和说明
static java.lang.String	KEY

构造器概要

构造器

构造器和说明
ConnectionServlet_21()

方法概要

限定符和类型	方法和说明
void	close(java.sql.Connection con) Closes the given JDBC connection
void	close(java.lang.String sector, java.sql.Connection con)
void	destroy() Destroy the servlet.
java.sql.Connection	getConnection() Get a JDBC connection from the pool
java.sql.Connection	getConnection(java.lang.String sector)
java.lang.String[]	getSectors(java.lang.String cfgFileName) 获取配置文件中数据库连接的名字
void	init(javax.servlet.ServletConfig cfg) Initialize the servlet.

从类继承的方法 javax.servlet.http.HttpServlet

service

从类继承的方法 javax.servlet.GenericServlet

getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log

从类继承的方法 java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

KEY

public static java.lang.String KEY

构造器详细资料

ConnectionServlet_21

public ConnectionServlet_21()

方法详细资料

getConnection

public java.sql.Connection getConnection()
                                  throws java.lang.Exception

Get a JDBC connection from the pool

返回:

JDBC connection

抛出:

java.lang.Exception - Exception

getConnection

public java.sql.Connection getConnection(java.lang.String sector)
                                  throws java.lang.Exception

抛出:

java.lang.Exception

close

public void close(java.sql.Connection con)

Closes the given JDBC connection

参数:

con - JDBC Connection

close

public void close(java.lang.String sector,
                  java.sql.Connection con)

init

public void init(javax.servlet.ServletConfig cfg)
          throws javax.servlet.ServletException

Initialize the servlet. This is called once when the servlet is loaded. It is guaranteed to complete before any requests are made to the servlet

指定者:

init 在接口中 javax.servlet.Servlet

覆盖:

init 在类中 javax.servlet.GenericServlet

参数:

cfg - Servlet configuration information

抛出:

javax.servlet.ServletException

destroy

public void destroy()

Destroy the servlet. This is called once when the servlet is unloaded.

指定者:

destroy 在接口中 javax.servlet.Servlet

覆盖:

destroy 在类中 javax.servlet.GenericServlet

getSectors

public java.lang.String[] getSectors(java.lang.String cfgFileName)
                              throws java.lang.Exception

获取配置文件中数据库连接的名字

参数:

cfgFileName - String 配置文件

返回:

String[] 链接名字的数组

抛出:

java.lang.Exception - 异常