SpringMVC学习笔记（五）验证用户输入

参考

（1）《spring入门经典》（基于这本书第三章）
（2） Spring MVC 之输入验证（六）
（3）Hibernate Validator依赖项添加
（4）SpringMVC学习记录(六)–Validator验证
（5）SpringMVC数据验证

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代码结构

程序清单

（1）pom.xml：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">  <modelVersion>4.0.0</modelVersion>  <groupId>com.zqx</groupId>  <artifactId>SpringMVCBeanvalidation</artifactId>  <packaging>war</packaging>  <version>1.0-SNAPSHOT</version>  <name>SpringMVCBeanvalidation Maven Webapp</name>  <url>http://maven.apache.org</url>  <dependencies>    <dependency>      <groupId>junit</groupId>      <artifactId>junit</artifactId>      <version>3.8.1</version>      <scope>test</scope>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-core</artifactId>      <version>4.1.7.RELEASE</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-beans</artifactId>      <version>4.1.7.RELEASE</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-context</artifactId>      <version>4.1.7.RELEASE</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-web</artifactId>      <version>4.1.7.RELEASE</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-webmvc</artifactId>      <version>4.1.7.RELEASE</version>    </dependency>    <!-- Hibernate Validator依赖项 -->    <dependency>      <groupId>org.hibernate</groupId>      <artifactId>hibernate-validator</artifactId>      <version>5.4.0.Final</version>    </dependency>  </dependencies>  <build>    <finalName>SpringMVCBeanvalidation</finalName>  </build></project>

（2）web.xml：

<!DOCTYPE web-app PUBLIC        "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"        "http://java.sun.com/dtd/web-app_2_3.dtd" ><web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee      http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"         version="3.1">  <display-name>Archetype Created Web Application</display-name>  <servlet>    <servlet-name>springmvc</servlet-name>    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>    <load-on-startup>1</load-on-startup>  </servlet>  <servlet-mapping>    <servlet-name>springmvc</servlet-name>    <url-pattern>/</url-pattern>  </servlet-mapping></web-app>

（3）springmvc-servlet.xml

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"       xmlns:context="http://www.springframework.org/schema/context"       xmlns:mvc="http://www.springframework.org/schema/mvc"       xsi:schemaLocation="http://www.springframework.org/schema/beans                           http://www.springframework.org/schema/beans/spring-beans-4.0.xsd                           http://www.springframework.org/schema/context                           http://www.springframework.org/schema/context/spring-context-4.0.xsd                           http://www.springframework.org/schema/mvc                           http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">    <context:component-scan base-package="com.wiley.beginningspring.ch3" />    <context:annotation-config />    <mvc:annotation-driven validator="validator" />    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">        <property name="prefix" value="/WEB-INF/pages/" />        <property name="suffix" value=".jsp" />    </bean>    <!--    <bean id="messageSource"          class="org.springframework.context.support.ReloadableResourceBundleMessageSource">        <property name="basename" value="classpath:messages" />    </bean>    -->    <bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">        <!-- 根据书上的例子 -->        <!--<property name="validationMessageSource" ref="messageSource"/>-->        <!-- 验证配置，告知srpingmvc，我使用的是Hibernate验证框架来完成的验证 -->        <property name="providerClass" value="org.hibernate.validator.HibernateValidator" />    </bean></beans>

（4）User.java

package com.wiley.beginningspring.ch3.domain;import org.hibernate.validator.constraints.CreditCardNumber;import org.hibernate.validator.constraints.Email;import org.hibernate.validator.constraints.NotEmpty;import javax.validation.constraints.Pattern;import javax.validation.constraints.Size;public class User {    //验证长度    @Size(min=3, max=20,message = "size must be between 3 and 20")    String username;    //验证非空以及邮箱格式    @NotEmpty(message = "Not Empty!!!")    @Email(message = "invalid email")    String email;    //验证信用卡号格式    @CreditCardNumber(message = "invalid credit card number")    String ccNumber;    //验证密码格式长度    @Pattern(regexp = "^[a-zA-Z]\\w{3,14}$", message = "The frist character must be letter, and the size must be between 3 and 14")    String password;    public String getUsername() {        return username;    }    public void setUsername(String username) {        this.username = username;    }    public String getEmail() {        return email;    }    public void setEmail(String email) {        this.email = email;    }    public String getCcNumber() {        return ccNumber;    }    public void setCcNumber(String ccNumber) {        this.ccNumber = ccNumber;    }    public String getPassword() {        return password;    }    public void setPassword(String password) {        this.password = password;    }}

（5）UserController.java

package com.wiley.beginningspring.ch3.controller;import org.springframework.stereotype.Controller;import org.springframework.validation.BindingResult;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.servlet.ModelAndView;import com.wiley.beginningspring.ch3.domain.User;import javax.validation.Valid;@Controllerpublic class UserController {    @RequestMapping(value = "/form")    public ModelAndView user() {        return new ModelAndView("userForm", "user", new User());    }    @RequestMapping(value = "/result", method= RequestMethod.POST)    public ModelAndView processUser(@Valid User user, BindingResult result) {        ModelAndView modelAndView = new ModelAndView();        modelAndView.addObject("u", user);        if (result.hasErrors()) {            modelAndView.setViewName("userForm");        }        else {            modelAndView.setViewName("userResult");        }        return modelAndView;    }}

（6）UserController.java

package com.wiley.beginningspring.ch3.controller;import org.springframework.stereotype.Controller;import org.springframework.validation.BindingResult;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.servlet.ModelAndView;import com.wiley.beginningspring.ch3.domain.User;import javax.validation.Valid;@Controllerpublic class UserController {    @RequestMapping(value = "/form")    public ModelAndView user() {        return new ModelAndView("userForm", "user", new User());    }    @RequestMapping(value = "/result", method= RequestMethod.POST)    public ModelAndView processUser(@Valid User user, BindingResult result) {        ModelAndView modelAndView = new ModelAndView();        modelAndView.addObject("u", user);        if (result.hasErrors()) {            modelAndView.setViewName("userForm");        }        else {            modelAndView.setViewName("userResult");        }        return modelAndView;    }}

（7）userForm.jsp

<%@ page contentType="text/html; charset=ISO-8859-1" %><%@taglib uri="http://www.springframework.org/tags/form" prefix="mvc" %><html><head>    <title>Spring MVC Form Validation</title>    <style type="text/css">        .formFieldError { background-color: #FFC; }    </style></head><body><h2>User Registration Form</h2><mvc:form modelAttribute="user" action="result.mvc">    <table>        <tr>            <td><mvc:label path="username">User Name</mvc:label></td>            <td><mvc:input path="username" cssErrorClass="formFieldError" /></td>            <td><mvc:errors path="username" /></td>        </tr>        <tr>            <td><mvc:label path="email">E-Mail</mvc:label></td>            <td><mvc:input path="email" cssErrorClass="formFieldError" /></td>            <td><mvc:errors path="email" /></td>        </tr>        <tr>            <td><mvc:label path="ccNumber">Credit Card Number</mvc:label></td>            <td><mvc:input path="ccNumber" cssErrorClass="formFieldError" /></td>            <td><mvc:errors path="ccNumber" /></td>        </tr>        <tr>            <td><mvc:label path="password">Password</mvc:label></td>            <td><mvc:password path="password" cssErrorClass="formFieldError" /></td>            <td><mvc:errors path="password" /></td>        </tr>        <tr>            <td colspan="3">                <input type="submit" value="Submit" />            </td>        </tr>    </table></mvc:form></body></html>

（8）userResult.jsp

<%@ page contentType="text/html; charset=ISO-8859-1" %><%@taglib uri="http://www.springframework.org/tags/form" prefix="mvc" %><html><head>    <title>Spring MVC Form Handling</title></head><body><h2>User Registration Result</h2><table>    <tr>        <td>User Name</td>        <td>${u.username}</td>    </tr>    <tr>        <td>E-Mail</td>        <td>${u.email}</td>    </tr>    <tr>        <td>Credit Card Number</td>        <td>${u.ccNumber}</td>    </tr>    <tr>        <td>Password</td>        <td>${u.password}</td>    </tr></table></body></html>

测试

（1）输入页面

（2）验证username


（3）验证email



（4）验证Credit Card Number

（5）验证password