html_errors标签单独显示各个错误消息

最新推荐文章于 2024-02-04 11:20:51 发布

原创最新推荐文章于 2024-02-04 11:20:51 发布 · 438 阅读

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本文介绍了一个基于Struts框架的用户注册表单验证实现方法。通过自定义的UserForm类继承ActionForm并实现了validate方法来完成用户名和两次输入密码的一致性校验。此外，还展示了如何在HTML表单中展示错误信息。

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public class UserForm extends ActionForm {

private static final long serialVersionUID = 1L;

private User user = new User();
private String password2;

public User getUser() {
return user;
}

public void setUser(User user) {
this.user = user;
}

// ALT + SHIFT + S + R
public String getPassword2() {
return password2;
}

public void setPassword2(String password2) {
this.password2 = password2;
}

@Override
public ActionErrors validate(ActionMapping mapping,
HttpServletRequest request) {
ActionErrors errors = new ActionErrors();
String name1 = user.getUsername();
if(name1 != null)
name1 = name1.trim();
if("".equals(name1))
errors.add("[color=blue][b]username[/b][/color]", new ActionMessage("error.username"));
if(!user.getPassword().equals(password2)) {
errors.add("[b]password2[/b]", new ActionMessage("error.password2"));
}
return errors;
}
}

<form action="<html:rewrite action="/RegUser"/>">

user：<input type="text" name="user.username" value="${userForm.user.username}"/> <html:errors property="[color=blue][b]username[/b][/color]" /><br>

password：<input type="password" name="user.password" value="${userForm.user.password}" /><br>

password1：<input type="password" name="password2" value="${userForm.password2}"/><html:errors property="[color=blue][b]password2[/b][/color]" /><br>

以上蓝色部分必须对应上*****

<input type="submit" title="info.submit" value="<bean:message key='info.submit'/>" />
<html:submit titleKey="info.submit"><bean:message key="info.submit"/> </html:submit>
</form>