J2EE---SSH集成環境下對java和oracle時間的處理(系統時間)

處理java和數據庫時間數據的辦法

在編程中,我們經常被java和數據庫(mysql,oracle等)的時間格式所困擾,以下給出較爲合理的解決方法:

注:示例代碼建立在SSH集成環境下,若代碼環境不同,只需稍作修改即可,核心內容不變.

方法一 :

1.Entity.java

private String mydate;

public String getMydate() {
    return mydate;
}

public void setMydate(String mydate) {
    this.mydate = mydate;
}

2.Entity.hbm.xml

<property name="mydate" type="java.lang.String">
    <column name="MYDATE" length="30" />
</property>

3.Oracle

Columns,mydate,type = VARCHAR2(30)

4.EntityDaoImpl

public void addEntity(Entity entity) {
	Date date = new Date();
	String strDate = DateFormat.getDateInstance(DateFormat.DEFAULT).format(date);
	entity.setMydate(strDate);
	this.getHibernateTemplate().save(entity);
}

5.listEntity.jsp

<c:forEach var="e" items="${elist}">
    <td>
        ${e.mydate}
    </td>
</c:forEach>

頁面輸出:2016-10-9

方法二 :

1.Entity.java

import java.util.Date
private Date mydate;

public Date getMydate() {
    return mydate;
}

public void setMydate(Date mydate) {
    this.mydate = mydate;
}

2.Entity.hbm.xml

<property name="mydate" type="java.util.Date">
    <column name="MYDATE" length="30" />
</property>

3.Oracle

Columns,mydate,type = DATE

4.EntityDaoImpl

public void addEntity(Entity entity) {
    SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    Date date = new Date();
    String strDate = format.format(date);
    Date formatDate = new Date();
    try {
        formatDate = format.parse(strDate);
    } catch (ParseException e) {
        e.printStackTrace();
    }
    entity.setMydate(formatDate);
    this.getHibernateTemplate().save(entity);
}

5.listEntity.jsp

<c:forEach var="e" items="${elist}">
    <td>
        ${e.mydate}
    </td>
</c:forEach>

頁面輸出:2016-10-09 23:53:49.0

方法三 : 由 @VolJin 提供

window.οnlοad=function CurrentTime(){
        var now = new Date();
       
        var year = now.getFullYear();       //年
        var month = now.getMonth() + 1;     //月
        var day = now.getDate();            //日
        var hh = now.getHours();            //時
        var mm = now.getMinutes();          //分
        var clock = year + "-";

        if(month < 10){
            clock += "0";
    }
        clock += month + "-";
        if(day < 10){
            clock += "0";
    }
        clock += day + " ";
        if(hh < 10){
            clock += "0";
    }
        clock += hh + ":";
        if (mm < 10){
      clock += '0';
 
    }
        clock += mm;
        document.getElementById("billtime").value=clock;
}