java8110
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于 2004-02-17 12:33
这是我在tomcat中的配置,麻烦各位大虾帮我看一下有什么问题,多谢。 server.xml中的配置,我是用administration tool加上的 <GlobalNamingResources> <Environment name="simpleValue" type="java.lang.Integer" value="30"/> <Resource auth="Container" description="User database that can be updated and saved" name="UserDatabase" type="org.apache.catalina.UserDatabase"/> <Resource name="jdbc/mydb" type="javax.sql.DataSource"/> <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> <ResourceParams name="jdbc/mydb"> <parameter> <name>maxWait</name> <value>50</value> </parameter> <parameter> <name>maxActive</name> <value>4</value> </parameter> <parameter> <name>password</name> <value>mysql</value> </parameter> <parameter> <name>url</name> <value>jdbc:microsoft:sqlserver://srx:1433;databasename=hotel</value> </parameter> <parameter> <name>driverClassName</name> <value>com.microsoft.jdbc.sqlserver.SQLServerDriver</value> </parameter> <parameter> <name>maxIdle</name> <value>2</value> </parameter> <parameter> <name>username</name> <value>sa</value> </parameter> </ResourceParams> </GlobalNamingResources> web.xml的配置 <resource-ref> <description> Resource reference to a factory for java.sql.Connection instances that may be used for talking to a particular database that is configured in the server.xml file. </description> <res-ref-name> jdbc/mydb </res-ref-name> <res-type> javax.sql.DataSource </res-type> <res-auth> Container </res-auth> </resource-ref> jsp页面的调用 <% Context initCtx = new InitialContext(); Context envCtx = (Context) initCtx.lookup("java:comp/env"); // Look up our data source DataSource ds = (DataSource)envCtx.lookup("jdbc/mydb"); // Allocate and use a connection from the pool Connection conn = ds.getConnection(); %> 出现的错误 javax.servlet.ServletException: Cannot create JDBC driver of class '' for connect URL 'null', cause: null org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:867) org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:800) org.apache.jsp.index_jsp._jspService(index_jsp.java:69) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:133) javax.servlet.http.HttpServlet.service(HttpServlet.java:856) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:311) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248) javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
谢谢!
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