Question

我有以下网络应用程序。目标是在数据库连接后给出成功或失败消息。在这个应用程序中，我有一个Login.jsp和loginHelper.java

请帮帮我。我需要这个帮助。

I hava a Login.JSP with below code.
-----------------------------------

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<%@ page language="java"%>
<%@ page import="java.sql.*"%>
<%@ page import="com.test.loginHelper"%>
<%@ page import="java.util.*"%>
<%@ page import="java.text.*"%>
<%@ page import="javax.servlet.http.*"%>
 <% 
  String user = request.getParameter("uname");
    String pass = request.getParameter("pwd");
    int stat;
    //String dbURL = "jdbc:sqlserver://localhost:1433;databaseName=acc";  
     loginHelper tc = new loginHelper();
     stat=tc.checkLogin(user,pass);
    if (stat!= -1) {
     %>
   {"status":"success"}   
    <% }else{
    %>
  {"status":"failed"}
 <%} %>

And i have one one Helper class with name loginHelper.java

package com.test;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;


//import com.sun.org.apache.xalan.internal.utils.ObjectFactory;

public class loginHelper {

    public int checkLogin(String uname,String pass) {
         int status=-1;
          Connection conn = null;
          String dbName = "Test";
          String serverip="localhost";
          String serverport="1433";
          String url = "jdbc:sqlserver://"+serverip+":"+serverport+";databaseName="+dbName+"";
          String driver = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
          String databaseUserName = uname;
          String databasePassword = pass;          
              try {
                Class.forName(driver).newInstance();
            } catch (InstantiationException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (ClassNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
              try {
                conn = DriverManager.getConnection(url, databaseUserName, databasePassword);
            } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

             if (conn!=null) {
                 status=1;
              }
             else
             {
                 status=-1;
             }

        return status;
    }
}

当我使用tomcat 7服务器配置在eclipse中运行它时。在tomcat我收到505错误信息请帮帮我。

Answer 1

网址中存在空格问题。因为你必须在传递连接之前通过编码url删除空格，如下所示。

String  encodedURL=java.net.URLEncoder.encode(url,"UTF-8");
//Than pass it connection as below
DriverManager.getConnection(encodedURL, databaseUserName, databasePassword)

使用eclipse创建Web服务的Web服务示例登录

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