Spring MVC 使用JSR303校验表单

蔚落 2022-05-15 07:53 273阅读 0赞

导入JSR303相关JAR包

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**Spring MVC 使用JSR303校验表单**

**创建registerForm.jsp**

<%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <%@taglib prefix= "form" uri= "http://www.springframework.org/tags/form" %>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>测试JSR 303</title>
    </head>
    <body>
    <h3>注册页面</h3>
    <form:form modelAttribute="user" method="post" action="login" >
    	<table>
    		<tr>
    			<td>登录名:</td>
    			<td><form:input path="loginname"/></td>
    			<td><form:errors path="loginname" cssStyle= "color:red"/></td>
    		</tr>
    		<tr>
    			<td>密码:</td>
    			<td><form:input path="password"/></td>
    			<td><form:errors path="password" cssStyle= "color:red"/></td>
    		</tr>
    		<tr>
    			<td>用户名:</td>
    			<td><form:input path="username"/></td>
    			<td><form:errors path="username" cssStyle= "color:red"/></td>
    		</tr>
    		<tr>
    			<td>年龄:</td>
    			<td><form:input path="age"/></td>
    			<td><form:errors path="age" cssStyle= "color:red"/></td>
    		</tr>
    		<tr>
    			<td>邮箱:</td>
    			<td><form:input path="email"/></td>
    			<td><form:errors path="email" cssStyle= "color:red"/></td>
    		</tr>
    		<tr>
    			<td>生日:</td>
    			<td><form:input path="birthday"/></td>
    			<td><form:errors path="birthday" cssStyle= "color:red"/></td>
    		</tr>
    		<tr>
    			<td><input type="submit" value="提交"/></td>
    		</tr>
    	</table>
    </form:form>
    </body>
    </html>

**创建success.jsp**

<%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>测试JSR 303</title>
    </head>
    <body>
    <h3>测试JSR 303</h3>
    登录名：${requestScope.user.loginname }<br>
    密码：${requestScope.user.password }<br>
    用户名：${requestScope.user.username }<br>
    年龄：${requestScope.user.age }<br>
    邮箱：${requestScope.user.email }<br>
    生日：<fmt:formatDate value="${requestScope.user.birthday}" pattern="yyyy年MM月dd日"/><br>
    </body>
    </html>

**创建User**

package com.po;
    import java.util.Date;
    import javax.validation.constraints.Email;
    import javax.validation.constraints.NotBlank;
    import javax.validation.constraints.Past;
    import javax.validation.constraints.Pattern;
    import org.hibernate.validator.constraints.Length;
    import org.hibernate.validator.constraints.Range;
    import org.springframework.format.annotation.DateTimeFormat;
    public class User {
    	@NotBlank
    	private String loginname;	
    	@NotBlank
    	@Length(min=6,max=8)
    	private String password;	
    	@NotBlank
    	private String username;	
    	@Range(min=15, max=60)
    	private int age;	
    	@Email
    	private String email;	
    	@DateTimeFormat(pattern="yyyy-MM-dd")
    	@Past
    	private Date birthday;	
    	public User() {
    		super();
    		// TODO Auto-generated constructor stub
    	}
    	public String getLoginname() {
    		return loginname;
    	}
    	public void setLoginname(String loginname) {
    		this.loginname = loginname;
    	}
    	public String getPassword() {
    		return password;
    	}
    	public void setPassword(String password) {
    		this.password = password;
    	}
    	public int getAge() {
    		return age;
    	}
    	public void setAge(int age) {
    		this.age = age;
    	}
    	public String getEmail() {
    		return email;
    	}
    	public void setEmail(String email) {
    		this.email = email;
    	}
    	public String getUsername() {
    		return username;
    	}
    	public void setUsername(String username) {
    		this.username = username;
    	}
    	public Date getBirthday() {
    		return birthday;
    	}
    	public void setBirthday(Date birthday) {
    		this.birthday = birthday;
    	}
    	@Override
    	public String toString() {
    		return "User [loginname=" + loginname + ", password=" + password
    				+ ", email=" + email + ", username="
    				+ username + ", birthDate=" + birthday + "]";
    	}
    }

**创建UserController**

package com.controller;
    import javax.validation.Valid;
    import org.springframework.stereotype.Controller;
    import org.springframework.ui.Model;
    import org.springframework.validation.Errors;
    import org.springframework.web.bind.annotation.ModelAttribute;
    import org.springframework.web.bind.annotation.RequestMapping;
    import com.po.User;
    @Controller
    public class UserController {
    	@RequestMapping(value="/registerForm")
    	 public String registerForm(Model model){
    		User user = new User();
    		model.addAttribute("user",user);
    		// 跳转到注册页面
    		return "registerForm";
    	}
    	 
    	// 数据校验使用@Valid，后面跟着Errors对象保存校验信息
    	 @RequestMapping(value="/login")
    	 public String login(
    			 @Valid @ModelAttribute  User user,
    			 Errors  errors,
    			 Model model) {
    		 System.out.println(user);
    		 if(errors.hasErrors()){
    			 return "registerForm";
    		 }
    		 model.addAttribute("user", user);
    	     return "success";
    	 }
    }

**配置springmvc-config.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:p="http://www.springframework.org/schema/p"
        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.xsd
            http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd
            http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd">
    
    <mvc:annotation-driven />
    
    <context:component-scan base-package="com.*" />
    
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    	<property name="prefix" value="/WEB-INF/view/"></property>
    	<property name="suffix" value=".jsp" />
    </bean>
    </beans>

**启动Tomcat访问以下地址：[http://localhost:8080/jackson/registerForm][http_localhost_8080_jackson_registerForm]**

![70 1][]

![70 2][]

[70]: /images/20220515/c6fec95a174d4b8d8f8499bd6f9c74d9.png
[http_localhost_8080_jackson_registerForm]: http://localhost:8080/jackson/registerForm
[70 1]: /images/20220515/d363e35f7aca4e3ebb6aef96a4d88f3a.png
[70 2]: /images/20220515/ef471b0bab764ad1a293dca4d76862eb.png