Java 您的SQL语法有错误;查看与MySQL服务器对应的手册
我在tomcat上运行java文件时遇到了问题。我假设能够编辑我放在数据库中的记录,当我编辑记录时,它们什么也不做。当我试图编辑记录时,Tomcat抛出了这个错误 com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException:您有一个 SQL语法错误;检查与您的产品相对应的手册 MySQL服务器版本,以便在“WHERE cus_id”附近使用正确的语法= 第1行的“13” 我认为这是有错误的代码,因为它有所有的SQL命令。删除功能起作用。我就是不能编辑记录 谢谢你的帮助Java 您的SQL语法有错误;查看与MySQL服务器对应的手册,java,mysql,sql,tomcat,syntax,Java,Mysql,Sql,Tomcat,Syntax,我在tomcat上运行java文件时遇到了问题。我假设能够编辑我放在数据库中的记录,当我编辑记录时,它们什么也不做。当我试图编辑记录时,Tomcat抛出了这个错误 com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException:您有一个 SQL语法错误;检查与您的产品相对应的手册 MySQL服务器版本,以便在“WHERE cus_id”附近使用正确的语法= 第1行的“13” 我认为这是有错误的代码,因为它有所有的SQL命令。删除功能起作用。我就
package crud.data;
import java.sql.*;
import java.util.ArrayList;
import crud.business.Customer;
public class CustomerDB
{
//insert method (pass customer object to parameter customer)
public static int insert(Customer customer)
{
ConnectionPool pool = ConnectionPool.getInstance();
Connection connection = pool.getConnection();
PreparedStatement ps = null;
//comment
String query
= "INSERT INTO customer (cus_fname, cus_lname, cus_street, cus_city,
cus_state, cus_zip, cus_phone, cus_email, cus_balance, cus_total_sales,
cus_notes) "
+ "VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)";
try {
ps = connection.prepareStatement(query);
ps.setString(1, customer.getFname());
ps.setString(2, customer.getLname());
ps.setString(3, customer.getStreet());
ps.setString(4, customer.getCity());
ps.setString(5, customer.getState());
ps.setString(6, customer.getZip());
ps.setString(7, customer.getPhone());
ps.setString(8, customer.getEmail());
ps.setString(9, customer.getBalance());
ps.setString(10, customer.getTotalSales());
ps.setString(11, customer.getNotes());
return ps.executeUpdate();
} catch (SQLException e){
System.out.println(e);
return 0;
} finally {
DBUtil.closePreparedStatement(ps);
pool.freeConnection(connection);
}
}
//update method
public static int update(Customer customer)
{
ConnectionPool pool = ConnectionPool.getInstance();
Connection connection = pool.getConnection();
PreparedStatement ps = null;
String query = "UPDATE customer SET "
+ "cus_fname = ?, "
+ "cus_lname = ?, "
+ "cus_street = ?, "
+ "cus_city = ?, "
+ "cus_state = ?, "
+ "cus_zip = ?, "
+ "cus_phone = ?, "
+ "cus_email = ?, "
+ "cus_balance = ?, "
+ "cus_total_sales = ?, "
+ "cus_notes = ?, "
+ "WHERE cus_id = ?";
try {
ps = connection.prepareStatement(query);
ps.setString(1, customer.getFname());
ps.setString(2, customer.getLname());
ps.setString(3, customer.getStreet());
ps.setString(4, customer.getCity());
ps.setString(5, customer.getState());
ps.setString(6, customer.getZip());
ps.setString(7, customer.getPhone());
ps.setString(8, customer.getEmail());
ps.setString(9, customer.getBalance());
ps.setString(10, customer.getTotalSales());
ps.setString(11, customer.getNotes());
ps.setString(12, customer.getId());
return ps.executeUpdate();
} catch (SQLException e) {
System.out.println(e);
return 0;
} finally {
DBUtil.closePreparedStatement(ps);
pool.freeConnection(connection);
}
}
}
最后一个值上有一个逗号
,
+ "cus_notes = ?, "
所以用
+ "cus_notes = ? "
第64行:删除
+“cus_notes=?,”
中的逗号。您应该发布更多的错误,更容易识别错误的位置,现在根据提示是SQL语法错误。这是语法错误,如控制台日志中所示
最后一个值的末尾有逗号,请将其删除,然后再试一次
“cus\u notes=?”
在更新查询中键入的代码太多:+“cus\u notes=?,”
(在前面加上逗号,其中
)。