Java处理Oracle时间类型

Java 对 Oracle 的时间类型的处理和对 MySQL的时间类型的处理是不同的，下面介绍了Java如何拼接sql语句，往Oracle数据库中插入时间类型的数据。

CREATE TABLE STUDENT (
    ID NUMBER(38) PRIMARY KEY,
    NAME VARCHAr2(50),
    SEX NUMBER(3),
    CREATE_TIME DATE
);

sysdate表示获取当前时间

int id = 1;
String name = "jack";
int sex = 25;

String sql1 = "INSERT INTO STUDENT " +
        "(ID, " +
        "NAME, " +
        "SEX, " +
        "CREATE_TIME) VALUES " +
        "(" + id + ", " +
        "'" + name + "', " + 
        sex + ", " +
        "sysdate)";

// INSERT INTO STUDENT (ID, NAME, SEX, CREATE_TIME) VALUES (1, 'jack', 25, sysdate)

-- 插入数据库后
|ID   |NAME    |SEX   |CREATE_TIME  
|1    |jack    |25    |2022-01-03 09:23:12

注意 下面的Date 为 java.sql.Date

int id = 1;
String name = "jack";
int sex = 25;

String sql2 = "INSERT INTO STUDENT " +
        "(ID, " +
        "NAME, " +
        "SEX, " +
        "CREATE_TIME) VALUES " +
        "(" + id + ", " +
        "'" + name + "', " +
        sex +", " +
        "to_date('"+new java.sql.Date(System.currentTimeMillis())+"', 'yyyy-mm-dd hh24:mi:ss'))";

// INSERT INTO STUDENT (ID, NAME, SEX, CREATE_TIME) VALUES (1, 'jack', 25, to_date('2022-01-03', 'yyyy-mm-dd hh24:mi:ss'))

-- 插入数据库后
|ID   |NAME    |SEX   |CREATE_TIME  
|1    |jack    |25    |2022-01-03 00:00:00

注意下面的Date 为 java.util.Date

int id = 1;
String name = "jack";
int sex = 25;

String sql3 = "INSERT INTO STUDENT " +
        "(ID, " +
        "NAME, " +
        "SEX, " +
        "CREATE_TIME) VALUES " +
        "(" + id + ", " +
        "'" + name + "', " +
        sex +", " +
        "to_date('"+ new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new java.util.Date())+"', 'yyyy-mm-dd hh24:mi:ss'))";

// INSERT INTO STUDENT (ID, NAME, SEX, CREATE_TIME) VALUES (1, 'jack', 25, to_date('2022-01-03 09:23:12', 'yyyy-mm-dd hh24:mi:ss'))

-- 插入数据库后
|ID   |NAME    |SEX   |CREATE_TIME  
|1    |jack    |25    |2022-01-03 09:23:12