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mysql에 로그인을 하면 되는데 웹에서 연결하면 아래 에러가 납니다.. javax.servlet.ServletException: org.gjt.mm.mysql.Driver 제가 쓴 문장은 단순히 연결확인만 하려고 아래처럼 썼고요,, 도데체 어디를 보고 무엇을 수정해야 하는지요??? 도와주세요,,벌써 셋팅만 2주째 하고 있습니다.. 포트는 3306으로 바꿔서 해도 똑같은 결과입니다. String JDBC_DRIVER = "org.gjt.mm.mysql.Driver";  String JDBC_URL = "jdbc:mysql://128.134.72.178:3333/koreapowervoice_com";  String USER = "koreapowervoice_com";  String PASSWD="koreapowervoice";  ResultSet resultSet;  Statement stmt;  PreparedStatement pstmt;  Connection conn;  String strQuery = "";  String current_Date ="now()";  Class.forName(JDBC_DRIVER);  conn = DriverManager.getConnection(JDBC_URL, USER, PASSWD);  String value="";  stmt = conn.createStatement();  strQuery = "select passwd from member where user_id = 'aaaa'";  resultSet = stmt.executeQuery(strQuery); 아래는 전체 에러 메시지입니다... javax.servlet.ServletException: org.gjt.mm.mysql.Driver         at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:457)         at org.apache.jsp.member_0005fok$jsp._jspService(member_0005fok$jsp.java:104)         at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)         at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)         at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:202)         at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:382)         at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:474)         at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)         at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:201)         at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)         at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)         at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)         at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2344)         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)         at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)         at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)         at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)         at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:163)         at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)         at org.apache.catalina.connector.warp.WarpRequestHandler.handle(WarpRequestHandler.java:215)         at org.apache.catalina.connector.warp.WarpConnection.run(WarpConnection.java:194)         at java.lang.Thread.run(Thread.java:479) root cause java.lang.ClassNotFoundException: org.gjt.mm.mysql.Driver         at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1307)         at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1156)         at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:198)         at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:132)         at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:310)         at java.lang.Class.forName0(Native Method)         at java.lang.Class.forName(Class.java:115)         at org.apache.jsp.member_0005fok$jsp._jspService(member_0005fok$jsp.java:84)         at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)         at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)         at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:202)         at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:382)         at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:474)         at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)         at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:201)         at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)         at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)         at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)         at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2344)         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)         at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)         at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)         at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)         at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:163)         at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)         at org.apache.catalina.connector.warp.WarpRequestHandler.handle(WarpRequestHandler.java:215)         at org.apache.catalina.connector.warp.WarpConnection.run(WarpConnection.java:194)         at java.lang.Thread.run(Thread.java:479)

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