Struts2输入校验

类型转换输入校验执行流程：

1）首先执行类型转换

2）然后执行输入校验

3）如果以上任一项出现错误将不执行excute方法。直接跳转到本action对相应的名为input的result页面

action:

@Override
public void validate() {
//姓名校验
if (null==username||username.length()<3||username.length()>10){
this.addActionError(" username invalid");
this.addFieldError("username", "username invalid in field!");
}
//密码校验
if (null==password||password.length()<3||password.length()>6){
this.addActionError("password invalid!!");
}else if (repassword==null||repassword.length()<3||repassword.length()>6){

this.addActionError("repassword invalid!!");
}
else if (!password.equals(repassword)){
this.addActionError("The passwords not same!!");
}
//年龄校验
if(age<10||age>60){
this.addActionError("age invalid");

}
//出生日期校验
if (null==birthday){
this.addActionError("birthday invalid!!");
}
//毕业日期校验
if(null==graduate){
this.addActionError("graduate invalid!!");
}
//如果出生日期在毕业之前
if (birthday!=null&&graduate!=null){
Calendar c1=Calendar.getInstance();
c1.setTime(birthday);
Calendar c2=Calendar.getInstance();
c2.setTime(graduate);
if (c1.after(c2)){
this.addActionError("Birthday not befor graduate!!");
}
}

struts标签库：

<s:actionerror cssStyle="color=red"/>

``````````````````````````````````````

<s:fielderror cssStyle="color=blue"></s:fielderror>

<s:form action="register.action" theme="simple">
姓名：<s:textfield name="username" label="username"></s:textfield><br>
密码：<s:password name="password" label="password"></s:password><br>
重置密码：<s:password name="repassword" label="repassword"></s:password><br>
年龄：<s:textfield name="age" label="age"></s:textfield><br>
出生日期：<s:textfield name="birthday" label="birthday"></s:textfield><br>
毕业日期：<s:textfield name="graduate" label="graduate"></s:textfield><br>
<s:submit value="提交"></s:submit>

</s:form>