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springMVC+freeMarker表单验证

2016-04-18 23:09 453 查看

create.html

<!DOCTYPE html>

<html>

<head>

<meta charset="UTF-8">

<title>Insert title here</title>

</head>

<body>

<form action="create/user" method="post">

<#import "spring.ftl" as spring />

用户名：<input type="text" name="userName" value="${userDetail.userName!}" />

<div style="color:red;display:inline">

<#if userDetail??>

<@spring.bind "userDetail.userName" />

<@spring.showErrors "<br>"/>

<br/>

</#if>

</div>

密码：<input type="text" name="password" value="${userDetail.password!}" />

<div style="color:red;display:inline">

<#if userDetail??>

<@spring.bind "userDetail.password" />

<@spring.showErrors "<br>"/>

<br/>

</#if>

</div>

身份证号：<input type="text" name="id" value="${userDetail.id!}" />

<div style="color:red;display:inline">

<#if userDetail??>

<@spring.bind "userDetail.id" />

<@spring.showErrors "<br>"/>

<br/>

</#if>

</div>

<input type="submit" value="提交"/>

</form>

</body>

</html>

UserController.java

package com.lovo.controller;

import javax.servlet.http.HttpServletRequest;

import javax.validation.Valid;

import org.springframework.stereotype.Controller;

import org.springframework.validation.BindingResult;

import org.springframework.web.bind.annotation.ModelAttribute;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import com.lt.model.User;

@Controller

public class UserController {

@RequestMapping(value = "create/user", method = RequestMethod.POST)

public String doCreateUser(

@Valid @ModelAttribute("userDetail") User user,

BindingResult bindingResult,

HttpServletRequest request) {

// 如果有校验错误，返回添加用户的页面

if (bindingResult.hasErrors()) {

return "create";

}

if (isExistUserName(user.getUserName())) {

bindingResult.rejectValue("userName", "用户名已经存在","用户名已经存在");

return "create";

}

return "UserInfo";

}

@RequestMapping(value = "create.html", method = RequestMethod.GET)

public String fCreateUser(

@ModelAttribute("userDetail") User user,

HttpServletRequest request) {

return "create";

}

public boolean isExistUserName(String userName){

if (userName.equals("liutao")) {

return true;

}else {

return false;

}

}

}

User.java

package com.lt.model;

import javax.validation.constraints.Pattern;

import org.hibernate.validator.constraints.Length;

public class User {

@Length(min = 5, max = 20, message = "用户名长度必须位于5到20之间")

private String userName;

@Pattern(regexp="\\S{6,25}",message="密码为6到25个非空白字符")

private String password;

@Pattern(regexp="\\d{18}",message="身份证号码为18位数字")

private String id;

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 getId() {

return id;

}

public void setId(String id) {

this.id = id;

}

}

springmvc-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

xmlns:p="http://www.springframework.org/schema/p"

xmlns:context="http://www.springframework.org/schema/context"

xmlns:tx="http://www.springframework.org/schema/tx"

xmlns:aop="http://www.springframework.org/schema/aop"

xmlns:util="http://www.springframework.org/schema/util"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xmlns:mvc="http://www.springframework.org/schema/mvc"

xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd"
>



<mvc:annotation-driven/>



<context:component-scan base-package="com.lovo"/>



<bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>



<bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>



<bean class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">

<property name="templateLoaderPath" value="" />

<property name="defaultEncoding" value="UTF-8" />

</bean>



<bean class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver">

<property name="suffix" value=".html" />

<property name="contentType" value="text/html;charset=UTF-8" />



<property name="requestContextAttribute" value="rc" />

</bean>



<mvc:resources mapping="/js/**" location="/js/"/>

<mvc:default-servlet-handler/>

</beans>

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