你的server.xml里面的配置url写了吗?或者是你写的
不对
不对
解决方案 »
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......
<Context path="/bookstore" docBase="D:\tomcat5.5.11\webapps\bookstore" debug="0"
reloadable="true" > <Resource name="jdbc/bookdb"
auth="Container"
type="javax.sql.DataSource" /> <ResourceParams name="jdbc/bookdb">
<parameter>
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
</parameter> <!-- Maximum number of dB connections in pool. Make sure you
configure your mysqld max_connections large enough to handle
all of your db connections. Set to 0 for no limit.
-->
<parameter>
<name>maxActive</name>
<value>100</value>
</parameter> <!-- Maximum number of idle dB connections to retain in pool.
Set to 0 for no limit.
-->
<parameter>
<name>maxIdle</name>
<value>30</value>
</parameter> <!-- Maximum time to wait for a dB connection to become available
in ms, in this example 10 seconds. An Exception is thrown if
this timeout is exceeded. Set to -1 to wait indefinitely.
Maximum time to wait for a dB connection to become available
in ms, in this example 10 seconds. An Exception is thrown if
this timeout is exceeded. Set to -1 to wait indefinitely.
-->
<parameter>
<name>maxWait</name>
<value>10000</value>
</parameter> <!-- MySQL dB username and password for dB connections -->
<parameter>
<name>username</name>
<value>root</value>
</parameter>
<parameter>
<name>password</name>
<value></value>
</parameter> <!-- Class name for mm.mysql JDBC driver -->
<parameter>
<name>driverClassName</name>
<value>com.mysql.jdbc.Driver</value>
</parameter> <!-- The JDBC connection url for connecting to your MySQL dB.
The autoReconnect=true argument to the url makes sure that the
mm.mysql JDBC Driver will automatically reconnect if mysqld closed the
connection. mysqld by default closes idle connections after 8 hours.
-->
<parameter>
<name>url</name>
<value>jdbc:mysql://localhost:3306/bookdb?autoReconnect=true</value>
</parameter>
</ResourceParams></Context>
.......
你的这句“<Context path="/bookstore" docBase="D:\tomcat5.5.11\webapps\bookstore" debug="0"
reloadable="true" >”更改为“<Context path="/bookstore" docBase="bookstore" debug="0"
reloadable="true" >”
再试试
<Context path="/YourApp">
<Resource auth="Container" description="DB Connection" driverClassName="com.mysql.jdbc.Driver" maxActive="4" maxIdle="2" maxWait="5000" name="jdbc/BookDB" password="password" type="javax.sql.DataSource" url="jdbc:mysql://localhost:3306/YourDB?autoReconnect=true" username="username"/>
</Context>// web.xml 输入
<resource-ref>
<description>DB Connection</description>
<res-ref-name>jdbc/YourDB</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>// 即可实现 JDBC 调用
<Context path="/YourApp">
<Resource auth="Container" description="DB Connection" driverClassName="com.mysql.jdbc.Driver" maxActive="4" maxIdle="2" maxWait="5000" name="jdbc/YourDB" password="password" type="javax.sql.DataSource" url="jdbc:mysql://localhost:3306/YourDB?autoReconnect=true" username="username"/>
</Context>// web.xml 输入
<resource-ref>
<description>DB Connection</description>
<res-ref-name>jdbc/YourDB</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>// 即可实现 JDBC 调用