我写了一个程序,用单词列表填充数据库。问题是,每次我尝试运行代码时,它都会抛出“线程“主”java.sql.SQLException 中的异常:靠近“s”:语法错误”。我意识到这个论坛上也有人问过类似的问题,但在我的代码中我无法纠正错误。
因此我向您寻求帮助。
这是代码
import java.io.*;
import java.sql.*;
import java.util.Scanner;
public class db_populate {
public static void main(String[] args) throws SQLException, IOException,
ClassNotFoundException {
Connection c = null;
Statement stmt = null;
Scanner in = null;
String word;
String wordcat;
String j, sql;
int i = 0;
Class.forName("org.sqlite.JDBC");
c = DriverManager.getConnection("jdbc:sqlite:dictionary.db");
c.setAutoCommit(false);
System.out.println("Opened database successfully");
stmt = c.createStatement();
in = new Scanner(new File("wordsEn.txt"));
while (in.hasNext()) {
word = in.nextLine();
i++;
j = Integer.toString(i);
wordcat = word.substring(0, 2);
sql = "INSERT INTO WORDS (ID,CAT,WORD) " + "VALUES(" + j + ",'"
+ wordcat + "','" + word + "');";
stmt.executeUpdate(sql);
}
stmt.close();
c.commit();
c.close();
in.close();
System.out.println("Records created successfully");
}
}
这些是我在运行时遇到的错误。
Opened database successfully
Exception in thread "main" java.sql.SQLException: near "s": syntax error
at org.sqlite.core.NativeDB.throwex(NativeDB.java:397)
at org.sqlite.core.NativeDB._exec(Native Method)
at org.sqlite.jdbc3.JDBC3Statement.executeUpdate(JDBC3Statement.java:116)
at db_populate.main(db_populate.java:34)
最佳答案
使用PreparedStatement为了避免错误输入的问题:
PreparedStatement p = c.prepare("INSERT INTO WORDS (ID,CAT,WORD) VALUES(?, ?, ?)");
p.setInt(1, i);
p.setString(2, wordcat);
p.setString(3, word);
p.execute();
//commit results if using InnoDB, etc
关于java - 线程 "main"java.sql.SQLException : near "s": syntax error 中的异常,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/23158386/