public class DateConverter extends DefaultTypeConverter {
private static final SimpleDateFormat sdf = new SimpleDateFormat ("yyyy-MM-dd" );
public Object convertValue ( Map ognlContext, Object value, Class toType ) {
Object result = null;
if (toType == Date. class ) {
result = doConvertToDate (value );
} else if (toType == String. class ) {
result = doConvertToString (value );
}
return result;
}
private Date doConvertToDate ( Object value ) {
Date result = null;
if (value instanceof String ) {
try {
result = sdf. parse ( ( String ) value );
} catch ( ParseException e ) {
throw new XworkException ("Could not parse date", e );
}
} else if (value instanceof Object [ ] ) {
// let's try to convert the first element only
Object [ ] array = ( Object [ ] ) value;
if ( (array != null ) && (array. length >= 1 ) ) {
value = array [ 0 ];
result = doConvertToDate (value );
}
} else if ( Date. class. isAssignableFrom (value. getClass ( ) ) ) {
result = ( Date ) value;
}
return result;
}
private String doConvertToString ( Object value ) {
String result = null;
if (value instanceof Date ) {
result = sdf. format (value );
}
return result;
}
}
可以添加默认的xwork-default-conversion.properties
java.util.Date=com.javaeye.core.webwork.converter.DateConverter
也可以写在Domain Model的converter配置里面,具体的内容看webwork文档。
package com. jscud. www. tag;
import java. io. IOException;
import java. text. SimpleDateFormat;
import java. util. Date;
import javax. servlet. jsp. JspException;
import javax. servlet. jsp. JspWriter;
import com. opensymphony. webwork. views. jsp. WebWorkTagSupport;
/*
* Created Date 2004-12-5
*
*/
/**
* Date的格式化显示,默认格式为yy-MM-dd.
*
* @author scud
*
*/
public class DateShowTag extends WebWorkTagSupport
{
private String pattern;
private String value;
public int doStartTag ( ) throws JspException
{
try
{
JspWriter out = pageContext. getOut ( );
Date aDate = null;
Object aValue = findValue (value );
if ( null != aValue )
{
aDate = ( ( Date ) aValue );
}
String sRes = "";
if ( null != aDate )
{
SimpleDateFormat sdfTemp = new SimpleDateFormat (getPattern ( ) );
sRes = sdfTemp. format (aDate ). toString ( );
}
out. print (sRes );
return SKIP_BODY;
}
catch ( IOException ex )
{
ex. printStackTrace ( );
throw new JspException (ex. getMessage ( ) );
}
}
public void setPattern ( String pattern )
{
this. pattern = pattern;
}
public String getPattern ( )
{
if ( null == pattern )
{
return getDefaultPattern ( );
}
else
return pattern;
}
public void setValue ( String value )
{
this. value = value;
}
public String getDefaultPattern ( )
{
return "yy-MM-dd";
}
}
java代码: |
package com. jscud. www. tag; /* * Created Date 2004-12-5 * */ /** * DateTime的Tag. * * @author scud * */ public class DateTimeShowTag extends DateShowTag { public String getDefaultPattern ( ) { return "yy-MM-dd HH:mm"; } |
eway 写道: |
在使用webwork过程中遇到了这样一个问题: 我得domain model类包含了一个属性java.util.Date beginTime; webwork使用的model driven的方式。 界面上需要显示格式是:yyyy-MM-dd HH:mm,但是用<ww:property value="beginTime"/>似乎webwork默认的转换格式是yy-MM-dd,怎样才能得到yyyy-MM-dd HH:mm呢? |
webwork cookbook:http://wiki.opensymphony.com/display/WW/How+to+format+dates+and+numbers
定义一个action或者包的properties文件
在里面按照MessageFormat 定义你的date format 比如
java代码: |
format. date= { 0,date,yyyy-MM-dd HH:mm } |
在jsp页面中用<ww:text>标签
java代码: |
<ww:text name=" 'format.date'" value0="yourdate" /> |