我遇到了这个错误,我不知道是什么导致了这个错误。
这是我想出的一个简单的电子邮件自动回复java。我将连接到一个数据库,该数据库在表中有两列。 rEmail和sEmail,接收者......发件人。
所以如果接收者和发送者匹配我为我的java代码做的检查..它会自动回复一封电子邮件,但我一直得到这个SQL错误,我不知道它是什么...下面是我的代码..
public class TestList
extends TestMatch
{
private Collection senders;
public void init()
throws MessagingException
{
}
public Collection match(Mail mail) throws MessagingException
{
Connection conn = null;
Statement stmt = null;
try
{
Class.forName("com.mysql.jdbc.Driver");
conn = DriverManager.getConnection("jdbc:mysql://localhost/mail", "root", "password");
stmt = conn.createStatement();
String receiver = mail.getRecipients().toString();
String sender = mail.getSender().toString();
String receiverResult = receiver.substring(receiver.indexOf("[") + 1, receiver.indexOf("]"));
String sql = "SELECT senderEmail FROM TestList where rEmail='"+ rResult +"'" + " AND sEmail='"+sender+"'";
System.out.println("SQL ERROR Here -- 31");
ResultSet rs = stmt.executeQuery(sql);
this.senders = new HashSet();
while (rs.next()) {
this.senders.add(new MailAddress(rs.getString("sEmail")));
}
rs.close();
stmt.close();
conn.close();
}
catch (SQLException se)
{
se.printStackTrace();
}
catch (Exception e)
{
e.printStackTrace();
}
finally
{
try
{
if (stmt != null) {
stmt.close();
}
}
catch (SQLException se2) {}
try
{
if (conn != null) {
conn.close();
}
}
catch (SQLException se)
{
se.printStackTrace();
}
}
System.out.println("SQL ERROR Here -- 72);
if (this.senders.contains(mail.getSender())) {
System.out.println("SQL ERROR Here -- 74");
Properties props = new Properties();
Session session = Session.getDefaultInstance(props);
MimeMessage msg = new MimeMessage(session);
System.out.println("auto reply");
msg.setSubject ("subject");
msg.setSender (new InternetAddress("Postmaster@test.com"));
msg.setRecipient(Message.RecipientType.TO,(new InternetAddress("user1@captcha.com")));
msg.setText ("describe the mail text of","utf-8","Plain");
Transport.send(msg);
System.out.println("e-mail sent.");
return mail.getRecipients();
} else {
return null;
}
}
}
这件事会跑两次,我也不知道为什么。起初一切都会顺利进行,直到发送电子邮件然后它会再次重复并停在SQL错误--72。
我一直在努力解决这个问题,所以有人可以帮忙吗?
=====使用rs.getString(1)或rs.getString(2)后更新NEW ERROR;
`SQL ERROR Here -- line 31
java.sql.SQLException: Column Index out of range, 2 > 1.
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1073)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:987)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:982)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:927)
at com.mysql.jdbc.ResultSetImpl.checkColumnBounds(ResultSetImpl.java:818)
at com.mysql.jdbc.ResultSetImpl.getStringInternal(ResultSetImpl.java:5651)
at com.mysql.jdbc.ResultSetImpl.getString(ResultSetImpl.java:5570)
at org.apache.james.transport.matchers.SenderIsGreyList.match(SenderIsGreyList.java:59)
at org.apache.james.transport.LinearProcessor.service(LinearProcessor.java:357)
at org.apache.james.transport.JamesSpoolManager.process(JamesSpoolManager.java:405)
at org.apache.james.transport.JamesSpoolManager.run(JamesSpoolManager.java:309)
at java.lang.Thread.run(Thread.java:745)
SQL ERROR Here -- line 72`
答案 0 :(得分:2)
您似乎正在尝试检索名为" sEmail"的列。来自结果集中的行......
rs.getString("sEmail")
但是您的查询没有返回该名称的列。 SELECT语句返回名为" senderEmail"的列。
我总是使用数字。使用1获取第一列,例如
rs.getString(1)