在线求救急阿

Question

不知道怎么的
我的JSP所有跟数据库连接的
都出线这种错误
javax.servlet.ServletException: Name java: is not bound in this Context
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:825)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758)
org.apache.jsp.Login.adminLogin_jsp._jspService(adminLogin_jsp.java:109)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause javax.naming.NameNotFoundException: Name java: is not bound in this Context
org.apache.naming.NamingContext.lookup(NamingContext.java:768)
org.apache.naming.NamingContext.lookup(NamingContext.java:151)
javax.naming.InitialContext.lookup(InitialContext.java:351)
com.ShopOnLine.Login.adminLogin.adminlogin(adminLogin.java:27)
org.apache.jsp.Login.adminLogin_jsp._jspService(adminLogin_jsp.java:82)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)都不知道怎么回事,搞的我好郁闷
不好意思，本人不懂呀

Answer 1

package com.ShopOnLine.Register;import java.sql.*;
import java.lang.*;
import java.util.*;
import javax.naming.*;
import javax.sql.DataSource;public class Register {


public String  Conn(String UserName,String Password,String Email,String Address,String Sex,String Phone ) throws NamingException, SQLException
{   
String str="";//定义个个字符用来判断是否用户名重复 
Connection conn=null;
Statement st=null;
ResultSet rs=null;
//数据库连接池连接

InitialContext lc=new InitialContext();
Context envContext = (Context) lc.lookup("java:/comp/env"); 
DataSource ds = (DataSource) envContext.lookup("jdbc/ShopOnLine");
if(ds!=null) //如果DS不为空的话才进行操作
{

try {

conn=ds.getConnection();
st=conn.createStatement();
//进行用户查询
rs=st.executeQuery("select UserName from [User] where UserName='"+ UserName + "'");
if(!rs.next())//如果查询不到 该用户的话才进行插入操作
{  
str="";

String sql="insert into [User](UserName,PassWord,Email,Address,Sex,Phone)values('"+UserName+"','"+Password+"' ,'"+Email+"','"+Address+"','"+Sex+"','"+Phone+"')";

st.executeUpdate(sql);


}
else
{

str="Error";//如果存在这个用户的话，对str进行赋值 


}



} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
finally
{

conn.close();//关闭连接
st.close();
}

}
else
{

System.out.println("fsdf");
}

return str;




}




}

Answer 2

是不是找不到JNDI了?数据库没问题?这两个"java:/comp/env"和"jdbc/ShopOnLine"都好好的?