struts2验证的时候 为什么类型转换错误的时候不提示呢？
我用了struts的标签库。但是我自己重写的validate（）方法中的错误提示信息却都显示了。
如果类型转换错误，应该框架自己显示啊？正常的应该提示Invalid field value for field“”？
代码：
public class RegisterAction extends ActionSupport {
String username;
String password;
String repassword;
int age;
Date startDate;
Date endDate;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getRepassword() {
return repassword;
}
public void setRepassword(String repassword) {
this.repassword = repassword;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public Date getStartDate() {
return startDate;
}
public void setStartDate(Date startDate) {
this.startDate = startDate;
}
public Date getEndDate() {
return endDate;
}
public void setEndDate(Date endDate) {
this.endDate = endDate;
}
public String execute() throws Exception {
System.out.println("RegisterAction.execute()");
return this.SUCCESS;
}
public void validate() {
System.out.println("RegisterAction.validate()");
if(null == username || username.trim().length()<5 || username.trim().length()>12) {
this.addFieldError("username", "用户名的长度应为5-12");
}
if(null == password || password.trim().length()<5) {
this.addFieldError("password", "密码的长度应为5-12");
}else if(null == repassword || repassword.trim().length()<5) {
this.addFieldError("repassword", "确认密码的长度应为5-12");
}else if(!password.equals(repassword)) {
this.addFieldError("password", "两次输入的密码不一致!");
}
if(age == 0) {
this.addFieldError("age","年龄不能为空");
}
if(age < 0 ||age >160) {
this.addFieldError("age","您所输入的年龄不对");
}
if(startDate != null && endDate != null){
Calendar start = Calendar.getInstance();
start.setTime(startDate);
Calendar end = Calendar.getInstance();
end.setTime(endDate); if(!start.before(end)) {
this.addFieldError("startDate", "毕业日期应该在入学日期之前！");
}
}
}
}
==========================================================================
jsp中用的是标签库： <s:form action="register">
<s:textfield name="username" label="username"></s:textfield>
<s:textfield name="password" label="password"></s:textfield>
<s:textfield name="repassword" label="password2"></s:textfield>
<s:textfield name="age" label="age"></s:textfield>
<s:textfield name="startDate" label="startDate"></s:textfield>
<s:textfield name="endDate" label="endDate"></s:textfield>
<s:submit label="submit"></s:submit>
</s:form>==================================================================================
配置文件：
<action name="register" class="com.cfd.struts2.RegisterAction">
<result name="success">/success.jsp</result>
<result name="input">/register_taglib.jsp</result>
</action>
=====================================
为什么自己的错误都能显示，但是类型转换的错误就是不出呢？
我用了struts的标签库。但是我自己重写的validate（）方法中的错误提示信息却都显示了。
如果类型转换错误，应该框架自己显示啊？正常的应该提示Invalid field value for field“”？
代码：
public class RegisterAction extends ActionSupport {
String username;
String password;
String repassword;
int age;
Date startDate;
Date endDate;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getRepassword() {
return repassword;
}
public void setRepassword(String repassword) {
this.repassword = repassword;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public Date getStartDate() {
return startDate;
}
public void setStartDate(Date startDate) {
this.startDate = startDate;
}
public Date getEndDate() {
return endDate;
}
public void setEndDate(Date endDate) {
this.endDate = endDate;
}
public String execute() throws Exception {
System.out.println("RegisterAction.execute()");
return this.SUCCESS;
}
public void validate() {
System.out.println("RegisterAction.validate()");
if(null == username || username.trim().length()<5 || username.trim().length()>12) {
this.addFieldError("username", "用户名的长度应为5-12");
}
if(null == password || password.trim().length()<5) {
this.addFieldError("password", "密码的长度应为5-12");
}else if(null == repassword || repassword.trim().length()<5) {
this.addFieldError("repassword", "确认密码的长度应为5-12");
}else if(!password.equals(repassword)) {
this.addFieldError("password", "两次输入的密码不一致!");
}
if(age == 0) {
this.addFieldError("age","年龄不能为空");
}
if(age < 0 ||age >160) {
this.addFieldError("age","您所输入的年龄不对");
}
if(startDate != null && endDate != null){
Calendar start = Calendar.getInstance();
start.setTime(startDate);
Calendar end = Calendar.getInstance();
end.setTime(endDate); if(!start.before(end)) {
this.addFieldError("startDate", "毕业日期应该在入学日期之前！");
}
}
}
}
==========================================================================
jsp中用的是标签库： <s:form action="register">
<s:textfield name="username" label="username"></s:textfield>
<s:textfield name="password" label="password"></s:textfield>
<s:textfield name="repassword" label="password2"></s:textfield>
<s:textfield name="age" label="age"></s:textfield>
<s:textfield name="startDate" label="startDate"></s:textfield>
<s:textfield name="endDate" label="endDate"></s:textfield>
<s:submit label="submit"></s:submit>
</s:form>==================================================================================
配置文件：
<action name="register" class="com.cfd.struts2.RegisterAction">
<result name="success">/success.jsp</result>
<result name="input">/register_taglib.jsp</result>
</action>
=====================================
为什么自己的错误都能显示，但是类型转换的错误就是不出呢？
其中formName就是validation.xml中<form name="userForm">所对应的内容②在<html:form中追加一个属性onsubmit="return validateUserForm(this);"它的语法为：return validate + struts-config.xml中定义的form-bean名称 + (this);③追加<scriptlanguage="Javascript1.1" src="staticJavascript.jsp"></script>staticJavascript.jsp的内容为：<%@ page language="java" %><%-- set document type to Javascript(addresses a bug in Netscape accordingto a web resource --%><%@ page contentType="application/x-javascript" %><%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %><html:javascript dynamicJavascript="false" staticJavascript="true"/>这只是一种方式，还有其他简洁的（具体为啥这样，不是很明白，希望得到高人指点）比如：追加onsubmit="return validateUserForm(this);"<html:javascript formName="userForm" staticJavascript="true"/>
谁知道啊？ 和我说说吧 我在线等啊