2012-06-26(Tuesday) 00:00

一个时刻字段，要求输入00:00-12:60这样的时刻范围
使用如下的正则表达式，过滤掉了不合规则的数字之后，还差一个逻辑，结束时刻不能小于开始时刻，比如：10：00-9：00这样的输入也是不合法的。正则太折磨眼力了，应该也是可以做到这点的吧，为了偷懒，就定制个validator来处理这个点。

import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.component.UIInput;
import javax.faces.context.FacesContext;
import javax.faces.validator.Validator;
import javax.faces.validator.ValidatorException;

import org.apache.myfaces.trinidad.component.UIXInput;

public class ValidatorTime implements Validator {
public ValidatorTime() {
super();
}

public void validate(FacesContext facesContext, UIComponent uiComponent,
Object object) {

String value = null;
String a, b, c, d = null;
Boolean bool = false;
if ((facesContext == null) || (uiComponent == null)) {
throw new NullPointerException();
} if (!(uiComponent instanceof UIXInput)) {
return;
} if (null == object) {
return;
} //12:00-23:00
value = object.toString();
if (value != null && value.length() == 11) {
a = value.substring(0, 2);
b = value.substring(3, 5);
c = value.substring(6, 8);
d = value.substring(9, 11);
try {
Integer intA = Integer.valueOf(a);
Integer intB = Integer.valueOf(b);
Integer intC = Integer.valueOf(c);
Integer intD = Integer.valueOf(d);
if (intC > intA || (intA == intC && intD > intB)) {
bool = true;
} else {
bool = false;
}

} catch (Exception e) {
bool = false;
}

}
if (!bool) {
FacesMessage message = new FacesMessage();
message.setDetail("开始时刻大于结束时间");
message.setSummary("时刻输入有误");
message.setSeverity(FacesMessage.SEVERITY_ERROR);
throw new ValidatorException(message);

}

}
} Step2 在faces-config.xml中注册这个validator

Category: ADF Tagged: ADF