解析 SQLDate、java.util.Date 和 LocalDate

Question

我对使用日期感到很困惑，有人可以为我指出下面代码的正确方向吗，它会抛出以下异常：

org.h2.jdbc.JdbcSQLException:Invalid value '11' for parameter "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);
        }      
    }
 }

这是我的 SQL 语句创建一个 table 及其列类型：

  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

问题是您输入了错误的索引。您应该从 1 而不是 2 开始。
只有 10 个 '?'并且您有第 11 个参数不存在。
此代码应该有效：

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();

你在设置整数时也有奇怪的“+”。

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，该方法取决于您将所有内容按正确的顺序排列（您确实这样做了）。另一种选择是制作计算出数字的内部常量。但是，当您达到这一点时，您就到了真正需要使用框架进行 SQL 访问的地方。 :)

[编辑] 或者至少代码是 "correct" 在代码按描述工作的意义上。

解析 SQLDate、java.util.Date 和 LocalDate

Parsing SQLDate, java.util.Date and LocalDate

java

h2

java-time

sql-date-functions

date