标题:jsp连接mysql时出现HTTP Status 500 - 高手请进
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lulu820830
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jsp连接mysql时出现HTTP Status 500 - 高手请进
我的源程序是: <%@ page contentType="text/html;charset=gb2312"%>
<%@ page import="java.sql.*"%>
<html>
<body>
<%
Class.forName("org.gjt.mm.mysql.Driver").newInstance();
String url ="jdbc:mysql://localhost/jsptest?user=***&password=***&useUnicode=true&characterEncoding=GBK" ;
Connection conn= DriverManager.getConnection(url);
Statement stmt=conn.createStatement();
String query="select * from t";
ResultSet rs=stmt.executeQuery(query);
while(rs.next())
{
        String s=rs.getString("field_name");//字段不是字符型的话就不能用getString,根据字段类使用getBoolean等等
        int i=rs.getInt("v");
        out.println(s+" "+i+" <br>");
}
%>
</body>
</html>

出现下面的错误提示:


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: An exception occurred processing JSP page /test.jsp at line 8

5: <%
6: Class.forName("org.gjt.mm.mysql.Driver").newInstance();
7: String url ="jdbc:mysql://localhost/jsptest?user=***&password=***&useUnicode=true&characterEncoding=GBK" ;
8: Connection conn= DriverManager.getConnection(url);
9: Statement stmt=conn.createStatement();
10: String query="select * from t";
11: ResultSet rs=stmt.executeQuery(query);


Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:505)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:398)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)


root cause

javax.servlet.ServletException: com.mysql. Communications link failure due to underlying exception:

** BEGIN NESTED EXCEPTION **


MESSAGE: Connection refused: connect

STACKTRACE:

Connection refused: connect
at (Native Method)
at (Unknown Source)
at (Unknown Source)
at (Unknown Source)
at (Unknown Source)
at (Unknown Source)
at (Unknown Source)
at <init>(Unknown Source)..........
我刚学jsp和mysql麻烦高手帮忙看一下,是怎么回事
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2008-08-20 19:06
elan1986
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org.apache.jasper.JasperException: An exception occurred processing JSP page /test.jsp at line 8
test.jspt页面可能有问题吧!
2008-09-23 11:29



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