Struts中调用orcal存储过程的游标时报错为:Define tag cannot set a null value

2006-04-24 11:27:06 481 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

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我在Struts中用jdbc可以调出游标结果集,但用链接池时就报错为:Define tag cannot set a null value
麻烦大家看看是什么问题.

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切换为时间正序

adam_li 2006-04-24

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我jsp里面没用到java代码,都是用Struts标签的

wsk_228 2006-04-24

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不用写贴这么多吧，哈哈...你用jsp直接可以连成功嘛，不用Struts

adam_li 2006-04-24

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<%
HashMap map = (HashMap)session.getAttribute("map");
map.put("key","value");
%>
replicationMode = can be either 'synchronous' or 'asynchronous'.
* Synchronous means that the thread that executes the request, is also the
thread the replicates the data to the other nodes, and will not return until all
nodes have received the information.
* Asynchronous means that there is a specific 'sender' thread for each cluster node,
so the request thread will queue the replication request into a "smart" queue,
and then return to the client.
The "smart" queue is a queue where when a session is added to the queue, and the same session
already exists in the queue from a previous request, that session will be replaced
in the queue instead of replicating two requests. This almost never happens, unless there is a
large network delay.
-->











<Logger className="org.apache.catalina.logger.FileLogger"
directory="logs" prefix="localhost_log." suffix=".txt"
timestamp="true"/>






<Context path="/advertisement" docBase="/advertisement" debug="0">
<Resource name="jdbc/adv" auth="Container" type="javax.sql.DataSource"/>
<ResourceParams name="jdbc/adv">
<parameter>
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
</parameter>
<parameter>
<name>driverClassName</name>
<value>oracle.jdbc.driver.OracleDriver</value>
</parameter>
<parameter>
<name>url</name>
<value>jdbc:oracle:thin:@10.0.77.244:1521:wasu</value>
</parameter>
<parameter>
<name>username</name>
<value>adv</value>
</parameter>
<parameter>
<name>password</name>
<value>adv</value>
</parameter>
<parameter>
<name>maxActive</name>
<value>1000</value>
</parameter>
<parameter>
<name>maxIdle</name>
<value>100</value>
</parameter>
<parameter>
<name>maxWait</name>
<value>-1</value>
</parameter>
</ResourceParams>
</Context>

</Host>

</Engine>

</Service>

</Server>
这是我的连接池配置文件,麻烦帮我看看问题出在什么地方?

adam_li 2006-04-24

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<Connector port="8009"
enableLookups="false" redirectPort="8443" debug="0"
protocol="AJP/1.3" />










<Engine name="Catalina" defaultHost="localhost" debug="0">





<Logger className="org.apache.catalina.logger.FileLogger"
prefix="catalina_log." suffix=".txt"
timestamp="true"/>




<Realm className="org.apache.catalina.realm.UserDatabaseRealm"
debug="0" resourceName="UserDatabase"/>













<Host name="localhost" debug="0" appBase="webapps"
unpackWARs="true" autoDeploy="true">




<!-- Defines a cluster for this node,
By defining this element, means that every manager will be changed.
So when running a cluster, only make sure that you have webapps in there
that need to be clustered and remove the other ones.
A cluster has the following parameters:

className = the fully qualified name of the cluster class

name = a descriptive name for your cluster, can be anything

debug = the debug level, higher means more output

mcastAddr = the multicast address, has to be the same for all the nodes

mcastPort = the multicast port, has to be the same for all the nodes

mcastFrequency = the number of milliseconds in between sending a "I'm alive" heartbeat

mcastDropTime = the number a milliseconds before a node is considered "dead" if no heartbeat is received

tcpThreadCount = the number of threads to handle incoming replication requests, optimal would be the same amount of threads as nodes

tcpListenAddress = the listen address (bind address) for TCP cluster request on this host,
in case of multiple ethernet cards.
auto means that address becomes
InetAddress.getLocalHost().getHostAddress()

tcpListenPort = the tcp listen port

tcpSelectorTimeout = the timeout (ms) for the Selector.select() method in case the OS
has a wakup bug in java.nio. Set to 0 for no timeout

printToScreen = true means that managers will also print to std.out

expireSessionsOnShutdown = true means that

useDirtyFlag = true means that we only replicate a session after setAttribute,removeAttribute has been called.
false means to replicate the session after each request.
false means that replication would work for the following piece of code:

adam_li 2006-04-24

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<Server port="8005" shutdown="SHUTDOWN" debug="0">


<Listener className="org.apache.catalina.mbeans.ServerLifecycleListener"
debug="0"/>
<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"
debug="0"/>


<GlobalNamingResources>


<Environment name="simpleValue" type="java.lang.Integer" value="30"/>


<Resource name="UserDatabase" auth="Container"
type="org.apache.catalina.UserDatabase"
description="User database that can be updated and saved">
</Resource>
<ResourceParams name="UserDatabase">
<parameter>
<name>factory</name>
<value>org.apache.catalina.users.MemoryUserDatabaseFactory</value>
</parameter>
<parameter>
<name>pathname</name>
<value>conf/tomcat-users.xml</value>
</parameter>
</ResourceParams>

</GlobalNamingResources>




<Service name="Catalina">




<Connector
port="80" maxThreads="1500" minSpareThreads="500" maxSpareThreads="750"
enableLookups="false" redirectPort="8443" acceptCount="100"
debug="0" connectionTimeout="30000"
disableUploadTimeout="true" />

wsk_228 2006-04-24

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把连接池内容放上来。

Define tag cannot set a null value
定义标签不能设一个空值

adam_li 2006-04-24

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有人遇到过这种问题的嘛?

Struts中调用orcal存储过程的游标时报错为:Define tag cannot set a null value

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