这是什么？？？？？？？？？？？？？？

Question

org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot load JDBC driver class 'oracle.jdbc.driver.OracleDriver'
at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1136)
at org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSource.java:880)
at com.AddManagerServlet.doPost(AddManagerServlet.java:49)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1130)
... 16 more

Answer 1

不能加载“oracle.jdbc.driver.OracleDriver”这个类，你是连数据库吧，看看你连数据库的那个.JAR包有没有放到tomcat的目录中。

Answer 2

我想用连接池
<Context>    <!-- Default set of monitored resources -->
    <WatchedResource>WEB-INF/web.xml</WatchedResource>

    <!-- Uncomment this to disable session persistence across Tomcat restarts -->
    <!--
    <Manager pathname="" />
    -->    <!-- Uncomment this to enable Comet connection tacking (provides events
         on session expiration as well as webapp lifecycle) -->
    <!--
    <Valve className="org.apache.catalina.valves.CometConnectionManagerValve" />
    -->
   <Resource name="jdbc/oracleds" auth="Container" type="javax.sql.DataSource" maxActive="100" maxIdle="30"
    maxWait="10000" username="scott" password="tiger" driverClassName="oracle.jdbc.driver.OracleDriver"
url="jdbc:oracle:thin:@localhost:1521:ora9" />
</Context>。。
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.*;import java.sql.PreparedStatement;
import java.text.SimpleDateFormat;import javax.naming.Context;
import javax.naming.InitialContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.DataSource;public class AddManagerServlet extends HttpServlet {
private static final long serialVersionUID = -1213529495616811115L; public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
} public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException { String sql = "insert into guestbook(id,name,email,phone,title,content,time)values(gb_seq.nextval,?,?,?,?,?,?)";
int result = 0;
request.setCharacterEncoding("GBK");
String name = request.getParameter("name");
String title = request.getParameter("title");
response.setContentType("text/html;charset=utf-8");
PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<head><title>add manager</title></head>");
out.println("<body>");
if (StringUtil.validateNull(name)) {
out.println("对不起，姓名不能为空，请重新输入！！！");
out.println("<a href='"+request.getContextPath()+"/addMessage.html'>添加留言内容</a><br>");
} else if (StringUtil.validateNull(title)) {
out.println("对不起，标题不能为空，请重新输入！！！");
out.println("<a href='"+request.getContextPath()+"/addMessage.html'>添加标题内容</a><br>");
} else {
try {
Context context = new InitialContext();
DataSource ds = (DataSource)context.lookup("java:/comp/env/jdbc/oracleds");
Connection conn = ds.getConnection();
PreparedStatement pstmt = conn.prepareStatement(sql);
pstmt.setString(1, StringUtil.filterHtml(name));
pstmt.setString(2, StringUtil.filterHtml(request
.getParameter("email")));
pstmt.setString(3, StringUtil.filterHtml(request
.getParameter("phone")));
pstmt.setString(4, StringUtil.filterHtml(title));
pstmt.setString(5, request.getParameter("content"));
SimpleDateFormat sdf = new SimpleDateFormat(
"yyyy-MM-dd hh:mm:ss");
pstmt.setString(6, sdf.format(new java.util.Date()));
result = pstmt.executeUpdate();
pstmt.close();
conn.close();

} catch (Exception e) {
e.printStackTrace();
}
if(result==0){
out.println("对不起，不成功，请重新输入！！！");
out.println("<a href='"+request.getContextPath()+"/addMessage.html'>添加留言内容</a><br>");
}else{
out.println("恭喜，添加成功！！！");
out.println("<a href='"+request.getContextPath()+"/servlet/getManager'>查看留言内容</a><br>");
}
out.println("</body>");
out.println("</html>");
out.flush();
out.close();
}
}}

Answer 3

把驱动包放到tomcat/server/lib目录下就可以了

Answer 4

那也要驱动吧，把oracle驱动放在tomcat的common\lib 下试试

Answer 5

缺少JAR包，要在服务器的lib目录下放入你的JDBC驱动包

Answer 6

不能加载oracle的jdbc驱动。
   少了jar ,在tomcat 的 common/lib 目录下加入驱动包应该即可..

Answer 7

如果是eclipse的话···config---build path导入oracle的jar