尝试使用 jdbc、SimpleDateFormat 插入数据库时​​日期中的年份不正确

Question

我一直在尝试使用 JDBC、SimpleDateFormat API 将日期插入 Oracle 数据库。 当我将日期传递为“2016-07-24”时，它插入为错误的“24-JUL-24”（年份错误），它应该是“24-JUL-16”。它发生在第 n 次。尽管我尝试反复插入数据，但我无法调试代码。 任何人都可以参考下面的代码、数据库架构和日期格式，如果我哪里错了请告诉我。谢谢。

DAO 程序

    package com.oog.big.database;

    import java.sql.Connection;
    import java.sql.PreparedStatement;
    import com.oog.big.database.DBConnection;
    import java.text.SimpleDateFormat;

    public class ItemDetailsDAO {
    // format for date  
    public static final SimpleDateFormat transactionDateFormat = new SimpleDateFormat(
            "yyyy-MM-dd");
    public static transient final SimpleDateFormat requestDateTimeFormat = new SimpleDateFormat(
            "yyyy-MM-dd'T'HH:mm:ss.SSSXXX");
    private static final String insertTableSQL = "INSERT INTO ITEM_DETAILS ("
            + "    ITEM_ID                    ,"
            + "    SRV_NAME               ,"
            + "    INS_TYPE            ,"
            + "    REQ_CONTEXT            ,"
            + "    STATUS_FLAG     ,"
            + "    CHL                    ,"
            + "    TRANSACTION_DATE           ,"
            + "    REQ_DATETIME           ,"
            + "    FLAG          )" + "values(?,?,?,?,?,?,?,?,?)";

    public static void save() throws Exception {

        Connection con = null;
        PreparedStatement stmt = null;
        try {
            con = DBConnection.getConnection();
            con.setAutoCommit(true);

                stmt = con.prepareStatement(insertTableSQL);
                stmt.setInt(1, 1256);
                stmt.setString(2, "DD");
                stmt.setString(3, "OL");
                stmt.setString(4, "DP");
                stmt.setString(5, "");
                stmt.setString(6, "FF");
                /** Incorrect Date **/
                stmt.setDate(
                        7,
                        new java.sql.Date(transactionDateFormat.parse(
                                "2016-07-24").getTime()));
                stmt.setDate(
                        8,
                        new java.sql.Date(requestDateTimeFormat.parse(
                                "2016-08-02T16:56:01.764-04:00").getTime()));
                stmt.setString(9, "N");
                stmt.execute();
                stmt.close();
                System.out.println("Completed!!");

            } catch (Exception e) {
            System.out.println("DB Error: "+e);
        }
    }
}

ITEM_DETAILS

的架构

CREATE TABLE OYD.ITEM_DETAILS
  (
    ITEM_ID                    INTEGER NOT NULL,
    SRV_NAME               VARCHAR2(5) DEFAULT NULL,
    INS_TYPE            VARCHAR2(3) DEFAULT NULL,
    REQ_CONTEXT            VARCHAR2(3) DEFAULT NULL,
    REQ_DATETIME           TIMESTAMP DEFAULT NULL,
    STATUS_FLAG     VARCHAR2(2) DEFAULT NULL,
    CHL                    VARCHAR2(2) DEFAULT NULL,
    TRANSACTION_DATE           DATE DEFAULT NULL,
    FLAG          VARCHAR2(1) DEFAULT NULL,
    LAST_UPDATE_TIMESTAMP      TIMESTAMP DEFAULT SYSTIMESTAMP,
    CONSTRAINT PK_ITEM_DETAILS PRIMARY KEY (ITEM_ID)
  )
PARTITION BY RANGE (LAST_UPDATE_TIMESTAMP) INTERVAL (NUMTODSINTERVAL(1,'DAY'))
(
PARTITION P_ITEM_DETAILS VALUES LESS THAN (TO_DATE('07-MAR-2016','DD-MON-YYYY'))
)PARALLEL;

规格：

• JAVASE8
• Oracle 12c 数据库
• JDBC 连接器：ojdbc7-12.1.0.1.0.jar

Answer 1

您可以在 SQL.

中使用 Oracle 的日期函数，而不是使用 SimpleDateFormat 格式化日期

private static final String insertTableSQL = "INSERT INTO ITEM_DETAILS ("
        + "    ITEM_ID,"
        + "    SRV_NAME,"
        + "    INS_TYPE,"
        + "    REQ_CONTEXT,"
        + "    STATUS_FLAG,"
        + "    CHL,"
        + "    TRANSACTION_DATE,"
        + "    REQ_DATETIME,"
        + "    FLAG)" + "values(?,?,?,?,?,?,TO_DATE(?,'DD-MON-RR'),TO_DATE(?,'DD-MON-RR'),?)";

public static void save(){
//.........
smtp.setString(7,"24-07-2016");
smtp.setString(8,"02-8-2016");
//.........

您甚至可以在 TO_DATE() 函数中格式化时间 (hh:mm:ss) 来存储时间戳。