初学者提问：关于TOMCAT连接MYSQL的有关问题！
日期：2014-05-18 浏览次数：20759 次
菜鸟提问：关于TOMCAT连接MYSQL的问题！！！
我写了一个简短的程序：
<%@ page contentType= "text/html;charset=gb2312 "%>
<%@ page import= "java.sql.* "%>
<html>
<body>
<%Class.forName( "com.jdbc.mysql.Driver ").newInstance();
String url = "jdbc:mysql://localhost/first?user=test&password=123456&useUnicode=true&characterEncoding=8859_1 ";
//first为你的数据库名
Connection conn= DriverManager.getConnection(url);
Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
String sql= "select * from first ";
ResultSet rs=stmt.executeQuery(sql);
while(rs.next()) {%>
您的第一个字段内容为： <%=rs.getString(1)%>
您的第二个字段内容为： <%=rs.getString(2)%>
<%}%>
<%out.print( "数据库操作成功，恭喜你 ");%>
<%rs.close();
stmt.close();
conn.close();
%>
</body>
</html>
但是我执行的时候确老是出错如下：
HTTP Status 500 -
--------------------------------------------
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: Exception in JSP: /first.jsp:5
2: <%@ page import= "java.sql.* "%>
3: <html>
4: <body>
5: <%Class.forName( "com.jdbc.mysql.Driver ").newInstance();
6: String url = "jdbc:mysql://localhost/first?user=test&password=123456&useUnicode=true&characterEncoding=8859_1 ";
7: //firstΪÄãµÄÊý¾Ý¿âÃû
8: Connection conn= DriverManager.getConnection(url);
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:506)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause
javax.servlet.ServletException: com.jdbc.mysql.Driver
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:843)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:776)
org.apache.jsp.first_jsp._jspService(first_jsp.java:84)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334)
org.apache.
我写了一个简短的程序：
<%@ page contentType= "text/html;charset=gb2312 "%>
<%@ page import= "java.sql.* "%>
<html>
<body>
<%Class.forName( "com.jdbc.mysql.Driver ").newInstance();
String url = "jdbc:mysql://localhost/first?user=test&password=123456&useUnicode=true&characterEncoding=8859_1 ";
//first为你的数据库名
Connection conn= DriverManager.getConnection(url);
Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
String sql= "select * from first ";
ResultSet rs=stmt.executeQuery(sql);
while(rs.next()) {%>
您的第一个字段内容为： <%=rs.getString(1)%>
您的第二个字段内容为： <%=rs.getString(2)%>
<%}%>
<%out.print( "数据库操作成功，恭喜你 ");%>
<%rs.close();
stmt.close();
conn.close();
%>
</body>
</html>
但是我执行的时候确老是出错如下：
HTTP Status 500 -
--------------------------------------------
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: Exception in JSP: /first.jsp:5
2: <%@ page import= "java.sql.* "%>
3: <html>
4: <body>
5: <%Class.forName( "com.jdbc.mysql.Driver ").newInstance();
6: String url = "jdbc:mysql://localhost/first?user=test&password=123456&useUnicode=true&characterEncoding=8859_1 ";
7: //firstΪÄãµÄÊý¾Ý¿âÃû
8: Connection conn= DriverManager.getConnection(url);
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:506)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause
javax.servlet.ServletException: com.jdbc.mysql.Driver
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:843)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:776)
org.apache.jsp.first_jsp._jspService(first_jsp.java:84)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334)
org.apache.
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