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안녕하세요 저는 JSP로 & 안녕하세요, mysql db에서 일부 데이터를 표시하려고했습니다. JDK1.7, MySQL Server 5.5, mysql-connector-java-5.1.19-bin.jar을 tomcat 7 서버의 커넥터로 설치했습니다. 내가 % CATALINA_HOME %의의 웹 어플리케이션에서 파일을 만든/ROOT/WS/ 폴더, 즉 코드JSP로 tomcat7에서 mysql 데이터베이스에 연결할 수 없습니다
<%@ page import="java.sql.*" %>
<%
String connectionURL = "jdbc:mysql://localhost:test?user=root;password=sumant";
Connection connection = null;
Statement statement = null;
ResultSet rs = null;
%>
<html><body>
<%
Class.forName("org.gjt.mm.mysql.Driver").newInstance();
connection = DriverManager.getConnection(connectionURL, "", "");
statement = connection.createStatement();
rs = statement.executeQuery("SELECT name FROM store");
while (rs.next()) {
out.println(rs.getString("name")+"<br>");
}
rs.close();
%>
</body></html>
와 호출 URL을 index.jsp를 : 통해 http : // localhost : 8080/WS/색인 내가 지금 여기에 무엇이 잘못되었는지를 받고 있지 않다
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 /ws/index.jsp at line 14
11:
12:
13: <%
14: Class.forName("org.gjt.mm.mysql.Driver").newInstance();
15: connection = DriverManager.getConnection(connectionURL, "", "");
16: statement = connection.createStatement();
17: rs = statement.executeQuery("SELECT name FROM store");
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:567)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:456)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
root cause
javax.servlet.ServletException: java.lang.ClassNotFoundException: org.gjt.mm.mysql.Driver
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:911)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:840)
org.apache.jsp.ws.index_jsp._jspService(index_jsp.java:98)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:433)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
root cause
java.lang.ClassNotFoundException: org.gjt.mm.mysql.Driver
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1678)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1523)
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:126)
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:63)
java.lang.Class.forName0(Native Method)
java.lang.Class.forName(Unknown Source)
org.apache.jsp.ws.index_jsp._jspService(index_jsp.java:78)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:433)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
을 얻고있다을 .JSP. 제발 MySQL 데이터베이스에 연결하는 데 도움이됩니다. 감사합니다. .
여전히 작동하지 않습니다. http://dev.mysql.com/downloads/connector/j/에서 커넥터를 다운로드했으며 Driver.class는 jar 파일의 org \ gjt \ mm \ mysql 디렉토리 안에 있습니다. – Sumant
왜 그 디렉토리에 넣으려고합니까? lib에 넣으십시오. – mykey