Question

我很困惑使用日期可能有人指出我正确的方向为下面的代码，它抛出以下异常：

org.h2.jdbc.JdbcSQLException：参数值'11'无效 “parameterIndex”[90008-193]

 import java.util.logging.Level;
 import java.util.logging.Logger;
 import java.sql.*;
 import javax.swing.*;
 import java.awt.*;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.time.LocalDate;
 import java.time.ZoneId;


 public class Database {

     public static void main(String[] args) throws SQLException {  
        Connection conn = null;
        Statement st = null;
        String URL = "jdbc:h2:~/registDB";
        String USER = "admin";
        String PASSWORD = "password";
        ZoneId z = ZoneId.systemDefault() ;
        LocalDate currentDate = LocalDate.now(z);
        LocalDate expiration = currentDate.plusDays(inputFld.getText()); //JTextField.getText()
        java.sql.Date expirationDate = java.sql.Date.valueOf(expiration);

        try {  
           Class.forName("org.h2.Driver").newInstance();
           conn = DriverManager.getConnection(URL,USER,PASS);
           String sql = "INSERT INTO data
                        (fullName,regNum,itemName,note,zHemjee,fee,
                         time,date,totalPay,expirationDate)"
                         + "VALUES"
                         + "(?,?,?,?,?,?,?,?,?,?)";
           pst = conn.prepareStatement(sql);  
                   // 1st index left not being modified on purpose which is ID auto_increment-ed     
           pst.setString(2, getFullName());   // Get methods are   
                                         // JTextField.getText() casted into proper data types
                                         // except the 11th row which is throwing SQLException
           pst.setString(3, getRegNum());
           pst.setString(4, getItemName());
           pst.setString(5, getNote());
           pst.setInt(6, getzHemjee());
           pst.setInt(7, getFee());
           pst.setInt(8, getTime());
           pst.setDate(9, java.sql.Date.valueOf(LocalDate.now()));
           pst.setDouble(10, getTotalPay());
           pst.setDate(11, expirationDate);
           pst.executeUpdate();
           pst.close();
           conn.close();

        } catch (ClassNotFoundException | SQLException ex) {
         Logger.getLogger(database.class.getName()).log(Level.SEVERE, null, ex);
        }      
    }
 }

以下是我的SQL语句，用它的列类型创建一个表：

  CREATE TABLE IF NOT EXISTS data "
            +"(id INT NOT NULL AUTO_INCREMENT,"             //int
            + " fullname varchar(30),"                      //String
            + " regNum varchar(10),"                        //String
            + " itemName varchar(30),"                      //String
            + " note varchar(30),"                          //String
            + " zHemjee int,"                            //int
            + " fee number,"                                //int
            + " time INT,"                                  //int
            + " date DATE,"                                 //Date
            + " totalPay BIGINT,"                           //int
            + " expirationDate DATE);");                    //Date

Answer 1

问题在于您是否输入了错误的索引。你应该从1开始而不是2 只有10＆＃39;？＆＃39;你有第11个不存在的参数这段代码应该有效：

String sql = "INSERT INTO data
                    (ovogNer,regNum,itemName,note,zHemjee,hvv,
                     hugatsaa,date,totalPay,expirationDate)"
                     + "VALUES"
                     + "(?,?,?,?,?,?,?,?,?,?)";
pst = conn.prepareStatement(sql);       
pst.setString(1, getFullName());  
pst.setString(2, getRegNum());
pst.setString(3, getItemName());
pst.setString(4, getNote());
pst.setInt(5, getzHemjee());
pst.setInt(6, getFee());
pst.setInt(7,  getTime());
pst.setDate(8, java.sql.Date.valueOf(LocalDate.now()));
pst.setDouble(9, getTotalPay());
pst.setDate(10, expirationDate);
pst.executeUpdate();

你也很奇怪＆＃34; +＆＃34;设置整数时。

Answer 2

Bojan Petkovic的回答是正确的。话虽如此，每当我有两个或三个以上的参数时，我总是使用索引变量来防止错误。像这样：

int index = 1;
String sql = "INSERT INTO data
                    (ovogNer,regNum,itemName,note,zHemjee,hvv,
                     hugatsaa,date,totalPay,expirationDate)"
                     + "VALUES"
                     + "(?,?,?,?,?,?,?,?,?,?)";
pst = conn.prepareStatement(sql);       
pst.setString(index++, getFullName());  
pst.setString(index++, getRegNum());
pst.setString(index++, getItemName());
pst.setString(index++, getNote());
pst.setInt(index++, getzHemjee());
pst.setInt(index++, getFee());
pst.setInt(index++,  getTime());
pst.setDate(index++, java.sql.Date.valueOf(LocalDate.now()));
pst.setDouble(index++, getTotalPay());
pst.setDate(index++, expirationDate);
pst.executeUpdate();

当然，这种方法取决于你把所有东西都按照正确的顺序（你做了）。另一个选择是使内部常量适用于数字。当你达到这一点时，你就到了一个真正需要使用框架进行SQL访问的地方。：）

[编辑]或至少代码是＆＃34;正确＆＃34;在某种意义上，代码按照描述的方式工作。

解析SQLDate，java.util.Date和LocalDate

2 个答案: