SpringMVC基础-11-数据校验

springmvc.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.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
        
	<!-- 如果配置了组件扫描器，并且有静态资源相关配置,需加这个并且，如果没有静态资源相关配置，可以不加 -->
	<!-- 注解驱动 -->
	<mvc:annotation-driven validator="monkey1024Validation"/>
	
	<!-- 注册hibernate validation -->
	<!--验证器-->
	<bean id="monkey1024Validation" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
    	<property name="providerClass" value="org.hibernate.validator.HibernateValidator"/>
	</bean>

	<!-- 注解驱动 -->
<!-- 	<mvc:annotation-driven conversion-service="conversionService"/> -->
	
	
	<!-- 注册类型转换器 -->
	<!-- <bean id="dateConverter" class="com.monkey1024.converter.DateConverter"/> -->
	
	<!-- 注册类型转换服务的bean -->
	<!--注册类型转换服务bean-->
<!-- 	<bean id="conversionService" class="org.springframework.context.support.ConversionServiceFactoryBean">
	    <property name="converters" ref="dateConverter"/>
	</bean> -->


	<!-- 注册组件扫描器 -->
	<context:component-scan base-package="com.monkey1024.*"/>
	
	<!-- 注册自定义异常处理器 -->
	<bean class="com.monkey1024.myexception.MyExceptionResolver"/>
	<!-- 异常处理 -->
	<bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
		<property name="exceptionMappings">
			<props>
				<!-- 这里可以添加多个自定义异常 -->
				<prop key="com.monkey1024.myexception.MyException">error/myerror</prop>
			</props>
		</property>
		
		<!-- 默认的异常跳转页面 -->
		<property name="defaultErrorView" value="error/error"/>
		<!-- 异常信息 ,在jsp页面中的el表达式可以直接获取value中的值-->
		<property name="exceptionAttribute" value="ex"/>
	
	</bean>
	
	
	<!-- 方式三：解决静态资源无法访问的问题，添加下面标签即可-->
    <!--
        mapping:表示对该资源的请求，注意后面是两个*
        location：静态资源所在的目录
    -->
	<mvc:resources mapping="/images/**" location="/images/"/>
	<mvc:resources mapping="/css/**" location="/css/"/>
	
	
	<!-- 外部视图解析器 -->
	<bean class="org.springframework.web.servlet.view.BeanNameViewResolver"/>
	
	<!-- 定义外部资源view对象 -->
	<bean id="monkey1024" class="org.springframework.web.servlet.view.RedirectView">
		<property name="url" value="http://www.monkey1024.com/"/>
	</bean>
	
	<!-- 内部视图解释类 需要放在controller上面-->
	<bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/jsp/" />
		<property name="suffix" value=".jsp" />
	</bean>
	

	
	<!-- 注册controller,
	<bean id="/hello.do" class="com.monkey1024.controller.HelloSpringMVC" />
	使用注解之后，就不用这个了 -->

</beans> 

User.java

package com.monkey1024.bean;

import javax.validation.constraints.Max;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotEmpty;
import javax.validation.constraints.Pattern;
import javax.validation.constraints.Size;

/*
 * 用户
 */
public class User {
	
	@NotEmpty(message="姓名不能为空")
	@Size(min=4,max=20,message="姓名长度必须在{min}-{max}之间")
	private String name;
	
	@Min(value=0,message="年龄不能小于{value}")
	@Max(value=120,message="年龄不能大于{value}")
	private int age;
	
	@Pattern(regexp = "^1([358][0-9]|4[579]|66|7[0135678]|9[89])[0-9]{8}$", message = "手机号码不正确")
	private String phone;
	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;
	}
	public String getPhone() {
		return phone;
	}
	public void setPhone(String phone) {
		this.phone = phone;
	}

	
}

UserController.java

package com.monkey1024.controller;


import java.util.List;

import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.validation.ObjectError;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import com.monkey1024.bean.User;

@Controller
@RequestMapping("/user")
public class UserController {
	@RequestMapping("/register.do")
	//@Validated不能加在String类型或者是基本数据类型的前面
	//BindingResult可以获取所有验证异常的信息
	public ModelAndView register(@Validated User user,BindingResult br){
		ModelAndView mv = new ModelAndView();
		List<ObjectError> allErrors = br.getAllErrors();
		
		//如果数据校验不通过，就进入下面的判断里面
		if(allErrors!=null && allErrors.size()>0){
			FieldError nameError = br.getFieldError("name");
			FieldError ageError = br.getFieldError("age");
			FieldError phoneError = br.getFieldError("phone");
			if(nameError != null){
				mv.addObject("nameError",nameError.getDefaultMessage());
			}
			if(ageError!=null){
				mv.addObject("ageError",ageError.getDefaultMessage());
			}
			if(phoneError!=null){
				mv.addObject("phoneError",phoneError.getDefaultMessage());
			}
			mv.setViewName("/register");
			return mv;
		}
		mv.addObject("name",user.getName());
		mv.addObject("msg","注册成功！");
		mv.setViewName("/user");
		return mv;
	}
	

}

user.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Insert title here</title>
</head>
<body>
${name }<br>
${age }<br>
</body>
</html> 

regist.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Insert title here</title>
</head>
<body>
	<form action="/user/register.do" method="get">
		姓名:<input type="text" name="name">${nameError }<br>
		年龄:<input type="text" name="age">${ageError }<br>
		手机号:<input type="text" name="phone">${phoneError }<br>
		<input type="submit" value="提交">
	</form>
</body>
</html>