2

在这里，我试图通过JDBC.

这是我的代码，最终出现以下异常。

<%@ page import ="java.sql.*" %>
<%@ page import ="javax.sql.*" %>


<%
  Connection con = null;
  String url = "jdbc:jtds:sqlserver://192.168.0.123:4070/";
  String db = "RUTHER_FORD";
  String driver = "net.sourceforge.jtds.jdbc.Driver";
  String userName ="RUTHER";
  String password="SORRY_CONFIDENTIAL";

  int sumcount=0;
  Statement st;
  try{
      Class.forName(driver).newInstance();
      con = DriverManager.getConnection(url+db,userName,password);
      String query = "select * from user_master";
      st = con.createStatement();
      ResultSet rs = st.executeQuery(query);
%>
<%
      while(rs.next()){
%>

        <%System.out.println(rs.getString(1));%>
        <%System.out.println(rs.getString(2));%>

<%
      }
%>
<%
  }
  catch(Exception e){
      e.printStackTrace();
  }
%>

<html>

.
.
.
.

//下面是我在调度页面时面临的异常

 java.security.AccessControlException: access denied (java.lang.RuntimePermission accessClassInPackage.sun.jdbc.odbc)
        at java.security.AccessControlContext.checkPermission(AccessControlContext.java:323)
        at java.security.AccessController.checkPermission(AccessController.java:546)
        at java.lang.SecurityManager.checkPermission(SecurityManager.java:532)
        at com.google.appengine.tools.development.DevAppServerFactory$CustomSecurityManager.checkPermission(DevAppServerFactory.java:166)
        at java.lang.SecurityManager.checkPackageAccess(SecurityManager.java:1512)

下面我又看到了一个例外

java.security.AccessControlException: access denied (java.io.FilePermission C:\Windows\TEMP read)
    at java.security.AccessControlContext.checkPermission(AccessControlContext.java:323)
    at java.security.AccessController.checkPermission(AccessController.java:546)
    at java.lang.SecurityManager.checkPermission(SecurityManager.java:532)
    at com.google.appengine.tools.development.DevAppServerFactory$CustomSecurityManager.checkPermission(DevAppServerFactory.java:166)
    at java.lang.SecurityManager.checkRead(SecurityManager.java:871)
    at java.io.File.isDirectory(File.java:752)
    at net.sourceforge.jtds.jdbc.ConnectionJDBC2.unpackProperties(ConnectionJDBC2.java:1253)
    at net.sourceforge.jtds.jdbc.ConnectionJDBC2.<init>(ConnectionJDBC2.java:280)
    at net.sourceforge.jtds.jdbc.ConnectionJDBC3.<init>(ConnectionJDBC3.java:50)
    at net.sourceforge.jtds.jdbc.Driver.connect(Driver.java:184)
    at java.sql.DriverManager.getConnection(DriverManager.java:582)
    at java.sql.DriverManager.getConnection(DriverManager.java:185)
    at org.apache.jsp.mmrda_005fsupplierportal.index_002dleft_002dcontainer_jsp._jspService(index_002dleft_002dcontainer_jsp.java:71)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
P.S I added jtdc.1.2.5 jar to my `class path`.

我缺少什么？对此有任何建议吗？

谢谢你的时间。

4

1 回答 1

1

创建 server.policy 文件并将文件放在您的 java 文件所在的位置。在文件中添加以下行并保存。试试这个，告诉我们它是否有效

grant {
permission java.security.AllPermission;
};
于 2013-03-15T11:42:19.437 回答