首先是web.xml
- <?xml version="1.0" encoding="UTF-8"?>
- <web-app version="2.5"
- xmlns="http://java.sun.com/xml/ns/javaee"
- xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
- xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
- http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
- <servlet>
- <servlet-name>user</servlet-name>
- <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
- <load-on-startup>1</load-on-startup>
- </servlet>
- <servlet-mapping>
- <servlet-name>user</servlet-name>
- <url-pattern>/</url-pattern>
- </servlet-mapping>
- <filter>
- <filter-name>sitemesh</filter-name>
- <filter-class>com.opensymphony.sitemesh.webapp.SiteMeshFilter</filter-class>
- </filter>
- <filter-mapping>
- <filter-name>sitemesh</filter-name>
- <url-pattern>/*</url-pattern>
- </filter-mapping>
- <filter>
- <filter-name>SpringCharacterEncodingFilter</filter-name>
- <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
- <init-param>
- <param-name>encoding</param-name>
- <param-value>UTF-8</param-value>
- </init-param>
- </filter>
- <filter-mapping>
- <filter-name>SpringCharacterEncodingFilter</filter-name>
- <url-pattern>/*</url-pattern>
- </filter-mapping>
- </web-app>
然后是SpringMVC的配置文件user-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:mvc="http://www.springframework.org/schema/mvc"
- xmlns:context="http://www.springframework.org/schema/context"
- xsi:schemaLocation="http://www.springframework.org/schema/beans
- http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
- http://www.springframework.org/schema/mvc
- http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
- http://www.springframework.org/schema/context
- http://www.springframework.org/schema/context/spring-context-3.0.xsd">
- <context:component-scan base-package="com.jadyer"/>
- <!-- 如果ClassPath中有JSR-303的实现,例如Hibernate-Validator,则支持@Valid修饰的参数 -->
- <!-- JSR-303 support will be detected on classpath and enabled automatically -->
- <mvc:annotation-driven/>
- <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
- <property name="prefix" value="/WEB-INF/jsp/"/>
- <property name="suffix" value=".jsp"/>
- </bean>
- </beans>
然后是SiteMesh的配置文件decorators.xml
- <?xml version="1.0" encoding="UTF-8"?>
- <decorators defaultdir="/WEB-INF/sitemesh/">
- <decorator name="main" page="basic.jsp">
- <pattern>/*</pattern>
- </decorator>
- </decorators>
接下来是SiteMesh用到的页面//WEB-INF//sitemesh//basic.jsp
- <%@ page language="java" pageEncoding="UTF-8"%>
- <%@ taglib prefix="decorator" uri="http://www.opensymphony.com/sitemesh/decorator"%>
- <h1>User Manager</h1>
- <hr/>
- <decorator:body/>
下面是含有表单的添加用户信息页面//WEB-INF//jsp//user//add.jsp
- <%@ page language="java" pageEncoding="UTF-8"%>
- <%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%>
- <form:form method="POST" modelAttribute="user">
- username:<form:input path="username"/><form:errors path="username"/><br/>
- nickname:<form:input path="nickname"/><form:errors path="nickname"/><br/>
- password:<form:password path="password"/><form:errors path="password"/><br/>
- email:<form:input path="email"/><form:errors path="email"/><br/>
- <input type="submit"/>
- </form:form>
下面是表单验证通过后打印用户信息的页面//WEB-INF//jsp//user//list.jsp
- <%@ page language="java" pageEncoding="UTF-8"%>
- <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
- <c:forEach items="${users}" var="user">
- ${user.value.username}----${user.value.nickname}----${user.value.password}----${user.value.email}
- <br/>
- </c:forEach>
- <a href="<%=request.getContextPath()%>/user/add">继续添加新用户</a>
接下来是使用注解处理表单验证细节的实体类User.java
- package com.jadyer.model;
- import javax.validation.constraints.Size;
- import org.hibernate.validator.constraints.Email;
- import org.hibernate.validator.constraints.NotEmpty;
- /**
- * User
- * @see ===================================================================================================
- * @see JSR303是JavaEE6中的一项子规范,叫做BeanValidation,它的官方参考实现是hibernate-validator
- * @see BeanValidation现在一共有两个规范:BeanValidation1.0(即JSR303)和BeanValidation1.1(即JSR349)
- * @see BeanValidation的官网是http://beanvalidation.org/
- * @see 关于JSR303的详细说明,请参考http://jcp.org/en/jsr/detail?id=303
- * @see 关于JSR349的详细说明,请参考http://jcp.org/en/jsr/detail?id=349
- * @see ===================================================================================================
- * @see JSR303规范主要用于对JavaBean中的字段的值的验证,使得验证逻辑从业务代码中脱离出来
- * @see JSR303定义了基于注解方式的JavaBean验证元数据模型和API,也可通过XML进行元数据定义,但注解会覆盖XML的定义
- * @see JSR303主要是对JavaBean进行验证,而没有指定方法级别(参数or返回值)、依赖注入等验证,因此催生了JSR349规范
- * @see JSR349规范目前处于草案状态,它主要支持依赖注入的验证和方法级别的验证(方法的参数和返回值)
- * @see Spring3.1目前已经完全支持依赖注入验证和方法级别的验证了,只不过不是原生的(JSR349规范还是草案嘛)
- * @see 关于这个的详细说明,可以参考此爷的文章http://www.iteye.com/topic/1123007
- * @see ===================================================================================================
- * @see 另外,Struts2已经可以很完美的和JSR303整合到一起了,呵呵,很是叫我欣慰啊!!!!
- * @see ===================================================================================================
- * @see 我们这里使用的是JSR303的hibernate-validator实现,它主要需要以下三个jar包
- * @see jboss-logging-3.1.0.CR2.jar
- * @see validation-api-1.0.0.GA.jar
- * @see hibernate-validator-4.3.0.Final.jar
- * @see ===================================================================================================
- * @author http://blog.csdn.net/jadyer
- * @create May 12, 2012 3:00:46 AM
- */
- public class User {
- @NotEmpty(message="姓名不能为空")
- private String username;
- private String nickname;
- @Size(min=3, max=10, message="密码长度必须大于3小于10")
- private String password;
- @NotEmpty(message="邮箱不能为空")
- @Email(message="邮箱格式不正确") //也可通过@Pattern(regexp="")书写正则来判断,二者都是JSR303规范中的
- private String email;
- public User() {}
- public User(String username, String nickname, String password, String email) {
- this.username = username;
- this.nickname = nickname;
- this.password = password;
- this.email = email;
- }
- public String getUsername() {
- return username;
- }
- public void setUsername(String username) {
- this.username = username;
- }
- public String getNickname() {
- return nickname;
- }
- public void setNickname(String nickname) {
- this.nickname = nickname;
- }
- public String getPassword() {
- return password;
- }
- public void setPassword(String password) {
- this.password = password;
- }
- public String getEmail() {
- return email;
- }
- public void setEmail(String email) {
- this.email = email;
- }
- }
最后是SpringMVC的控制器UserController.java
- package com.jadyer.controller;
- import java.util.HashMap;
- import java.util.Map;
- import javax.validation.Valid;
- import org.springframework.stereotype.Controller;
- import org.springframework.ui.Model;
- import org.springframework.validation.BindingResult;
- import org.springframework.web.bind.annotation.RequestMapping;
- import org.springframework.web.bind.annotation.RequestMethod;
- import com.jadyer.model.User;
- /**
- * @see ====================================================================================
- * @see SpringMVC中借助JSR303规范进行表单验证
- * @see 第一步:在实体类中针对需要验证的属性,进行Annotation配置
- * @see 第二步:在Controller的方法参数前使用@Valid开启JSR303验证,并添加BindingResult参数
- * @see BindingResult承载着JSR303验证时所产生的message,可据此进行判断验证结果
- * @see 第三步:判断BindingResult中是否装载了JSR303验证的message,有则转到前台页面显示出来
- * @see 第四步:前台页面中使用<form:errors path="username"/>打印JSR303的message信息
- * @see ====================================================================================
- * @see SpringMVC与sitemesh2.4无缝整合
- * @see 第一步:拷贝sitemesh-2.4.jar到工程中
- * @see 第二步:在web.xml中配置com.opensymphony.sitemesh.webapp.SiteMeshFilter
- * @see 第三步:创建并编辑sitemesh配置文件decorators.xml
- * @see 第四步:创建并编辑/WEB-INF/sitemesh/basic.jsp
- * @see ====================================================================================
- * @author http://blog.csdn.net/jadyer
- * @create May 12, 2012 3:20:46 AM
- */
- @Controller
- @RequestMapping("/user")
- public class UserController {
- private final static Map<String,User> users = new HashMap<String,User>();
- @RequestMapping(value="/add", method=RequestMethod.GET)
- public String addUser(Model model){
- model.addAttribute(new User());
- return "user/add";
- }
- @RequestMapping(value="/add", method=RequestMethod.POST)
- public String addUser(@Valid User user, BindingResult binding){
- //该方法若有其它参数,应写成这样addUser(@Valid User user, BindingResult binding, String job)
- //就是说,这里一定要把BindingResult放在待验证对象(@Valid User user)参数的后面,否则会报错
- if(binding.hasErrors()){
- return "user/add";
- }
- users.put(user.getUsername(), user);
- return "redirect:/user/list";
- }
- @RequestMapping("/list")
- public String list(Model model){
- model.addAttribute("users", users);
- return "user/list";
- }
- }
补充:本示例的访问地址是http://127.0.0.1:8080/SpringMVC_study/user/add
本文转自 http://blog.csdn.net/jadyer/article/details/7574668
时间: 2024-10-25 19:31:04