我正在尝试使用 JSP 创建一个登录系统并连接到 MySQL 数据库，并得到以下错误：
我的代码：
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"
import="com.core.bibit.service.Security"
import="javax.servlet.*"
import="java.util.*"
import="com.mysql.jdbc.Driver"
%>
<%
String username = request.getParameter("username");
String password = request.getParameter("password");
boolean test = new Security().validateUser(username, password);
System.out.println("Authen: " + test);
if(test){
response.sendRedirect("test.jsp");
}else{
response.sendRedirect("about.jsp");
}
%>
和
package com.core.bibit.service;
import com.mysql.jdbc.Driver;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Arrays;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
public class Security {
private final static int ITERATION_NUMBER = 1000;
public Security(){
}
...
public boolean validateUser(String userName, String password){
boolean valid = false;
Connection con = null;
PreparedStatement ps = null;
ResultSet rs = null;
try{
Class.forName("com.mysql.jdbc.Driver");
con = DriverManager.getConnection("jdbc:mysql://localhost:8889/bibit?"
+ "user=root&password=root");
String query = "SELECT * FROM bibit.User WHERE username = ?";
ps = con.prepareStatement(query);
ps.setString(1, userName);
rs = ps.executeQuery();
String digest, salt;
if(rs.next()){
digest = rs.getString("PASSWORD");
salt = rs.getString("SALT");
System.out.println("Digest: " + digest);
System.out.println("Salt: " + salt);
if(digest == null || salt == null){
System.out.println("IF1");
throw new SQLException("Database inconsistant Salt or Digested Password altered");
}
if(rs.next()){
System.out.println("IF2");
throw new SQLException("Database inconsistent two CREDENTIALS with the same LOGIN");
}
/*else{
System.out.println("IF3");
digest = "000000000000000000000000000=";
salt = "00000000000=";
}*/
byte[] bDigest = base64ToByte(digest);
byte[] bSalt = base64ToByte(salt);
//compute digest
byte[] proposedDigest = getHash(ITERATION_NUMBER, password, bSalt);
System.out.println("bDigest: " + bDigest);
System.out.println("proDigest: " + proposedDigest);
System.out.println("Response: " + Arrays.equals(proposedDigest, bDigest)); // && valid)
valid = Arrays.equals(proposedDigest, bDigest);
}
}catch(Exception e){
e.printStackTrace();
}finally{
try {
// rs.close();
//ps.close();
//con.close();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return valid;
}
}
}
我使用 TomEE / Tomcat 7.0，我的 MySQL 库是：mysql-connector-java-5.1，我尝试将其添加到 server.xml 文件中：
<Resource name="jdbc/DATABASENAME" type="javax.sql.DataSource" maxActive="4" maxIdle="2" username="root" password="" maxWait="23000" driverClassName="com.mysql.jdbc.Driver" url="jdbc:mysql://localhost:8889/bibit"></Resource>
任何人都可以解释什么是错的，也许如何解决它，或者只是朝着正确的方向推进？
解决方案：如果通过 Eclipse 启动服务器，则通过 Eclipse 添加 mysql 连接器并在一行中导入文件，如下所示