代码改变世界

Spring 3 MVC And JSR303 @Valid Example

2012-12-27 20:19  Rollen Holt  阅读(3797)  评论(0)    收藏  举报 
package com.xxx.training.controller;

import com.xxx.training.model.User;
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 javax.validation.Valid;

@Controller
@RequestMapping(value = "/user")
public class SignUpController {
    @RequestMapping(value = "signup", method = RequestMethod.POST)
    public ModelAndView signUp(@Valid User user, BindingResult result) {
        if (result.hasErrors()) {
            return new ModelAndView("signUpForm");
        }
        return new ModelAndView("done");
    }

    @RequestMapping(method = RequestMethod.GET)
    public ModelAndView displaySignUpForm() {
        return new ModelAndView("signUpForm", "user", new User());
    }
}

　　

package com.xxx.training.model;


import org.hibernate.validator.constraints.NotEmpty;
import org.hibernate.validator.constraints.Range;

public class User {

    @NotEmpty
    private String name;

    @Range(min = 1, max = 150)
    private int age;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }
}

　　message.properties

NotEmpty.user.name = Name is required!
Range.user.age = Age value must be between 1 and 150

　　signUpForm.jsp

<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<html>
<head>
    <style>
        .error {
            color: #ff0000;
        }

        .errorblock {
            color: #000;
            background-color: #ffEEEE;
            border: 3px solid #ff0000;
            padding: 8px;
            margin: 16px;
        }
    </style>
</head>

<body>
<h2>Customer SignUp Form - JSR303 @Valid example</h2>

<form:form method="POST" commandName="user" action="signup">
    <form:errors path="*" cssClass="errorblock" element="div"/>
    <table>
        <tr>
            <td>Customer Name :</td>
            <td><form:input path="name"/></td>
            <td><form:errors path="name" cssClass="error"/></td>
        </tr>
        <tr>
            <td>Customer Age :</td>
            <td><form:input path="age"/></td>
            <td><form:errors path="age" cssClass="error"/></td>
        </tr>
        <tr>
            <td colspan="3"><input type="submit"/></td>
        </tr>
    </table>
</form:form>

</body>
</html>

　　dispatchServlet-servlet.xml

<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-2.5.xsd
	http://www.springframework.org/schema/context
	http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

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

    <bean id="viewResolver"
          class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix">
            <value>/WEB-INF/pages/</value>
        </property>
        <property name="suffix">
            <value>.jsp</value>
        </property>
    </bean>

    <!-- support JSR303 annotation if JSR 303 validation present on classpath -->
    <mvc:annotation-driven />

    <bean class="org.springframework.context.support.ResourceBundleMessageSource"
          id="messageSource">
        <property name="basename" value="messages" />
    </bean>

</beans>

　　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">
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.png</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.js</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.css</url-pattern>
    </servlet-mapping>

    <servlet>
        <servlet-name>dispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <filter>
        <filter-name>CharacterEncodingFilter</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>CharacterEncodingFilter</filter-name>
        <url-pattern>/</url-pattern>
    </filter-mapping>

    <error-page>
        <error-code>404</error-code>
        <location>/WEB-INF/pages/404.jsp</location>
    </error-page>

</web-app>