Spring mvc:hibernate Validator (field cannot be empty, in 1-150 itself)

Spring mvc:hibernate Validator (field cannot be empty, in 1-150 itself)

Get ready:

Download Hibernate Validator Library-Hibernate Validator. Unziphibernate-validator-5.3.4.Final.jar

Create a new classes folder under/web-inf/

Access Address:

Http://localhost:8080/gugua3/student/index

Project: GUGUA3

Package Name: Springtest

This is used in the Hibernate-validator package, range range random number annotation, notempty not empty annotations

For example:

Import Org.hibernate.validator.constraints.notempty;import Org.hibernate.validator.constraints.range;public class Student {@NotEmptyprivate String   name; @Range (min=10, max=99) Private integer age;private integer ID;}

　　

Configuration file: Web.xml,applicationcontext,springtest-servlet.xml

Xml

<web-app> <display-name>archetype Created Web application</display-name> <!--configuration file path-->< Context-param> <param-name>contextconfiglocation</param-name><param-value>/web-inf/ applicationcontext.xml</param-value></context-param><!--Character Filter-<filter> < Filter-name>encodingfilter</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>encodingFilter</filter-name> <url-pattern>/*</url-patt Ern> </filter-mapping> <!--monitoring and forwarding--><listener><listener-class>      Org.springframework.web.context.contextloaderlistener</listener-class></listener><servlet> <servlet-name>springtest</sErvlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> &lt ;load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name> springtest</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> </web-ap P>

　　

Springtest-servlet.xml

<beansxmlns= "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.xsd HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/MVC/HTTP Www.springframework.org/schema/mvc/spring-mvc.xsd Http://www.springframework.org/schema/context/HTTP Www.springframework.org/schema/context/spring-context.xsd "><bean class=" Org.springframework.context.support.ResourceBundleMessageSource "id=" Messagesource "> <property name=" BaseName "value=" Messages "/></bean><bean class=" Org.springframework.web.servlet.view.InternalResourceViewResolver "> <property name=" prefix "value="/web-inf /jsp/"/> <property name=" suffix "value=". jsp "/> </bean></beans>

　　

Applicationcontext.xml

<beansxmlns= "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.xsd HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/MVC/HTTP Www.springframework.org/schema/mvc/spring-mvc.xsd Http://www.springframework.org/schema/context/HTTP Www.springframework.org/schema/context/spring-context.xsd "><!--default: annotation map support--><mvc:annotation-driven/ ><!--Static resource configuration--><mvc:resources location= "/pages/**" mapping= "/pages/"/><!--automatically scan package name, controller-- ><context:component-scan base-package= "Springtest"/></beans>

　　

Student.java

Package Springtest;import Org.hibernate.validator.constraints.notempty;import Org.hibernate.validator.constraints.range;public class Student {@NotEmptyprivate String   name; @Range (min=10, Max =99) Private integer age;private integer id;public String getName () {return name;} public void SetName (String name) {this.name = name;} Public Integer Getage () {return age;} public void Setage (Integer age) {this.age = age;} Public Integer GetId () {return ID;} public void SetId (Integer id) {this.id = id;}}

　　

Studentcontroller.java

Package Springtest;import Org.springframework.stereotype.controller;import Org.springframework.ui.model;import Org.springframework.web.bind.annotation.modelattribute;import Org.springframework.web.bind.annotation.requestmapping;import Org.springframework.web.bind.annotation.requestmethod;import Org.springframework.web.servlet.ModelAndView; Import Org.springframework.validation.annotation.validated;import org.springframework.validation.bindingresult;@ Controllerpublic class Studentcontroller {@RequestMapping (value= "/student/index", method=requestmethod.get) public Modelandview student () {return new Modelandview ("Student_index2", "command", New Student ());} @ModelAttribute ("student") public student Createstudent () {return new student (); @RequestMapping (value= "/student/addstudent", method=requestmethod.post) public String addstudent (@ModelAttribute (" Student ") @Validated student Student,bindingresult result, model model) {if (Result.haserrors ()) {return" Student_index2 ";} Model.addattribute ("name", StUdent.getname ()); Model.addattribute ("Age", Student.getage ()); Model.addattribute ("id", Student.getid ()); return " Student_result2 ";}}

　　

student_index.jsp

<%@ page language= "java" contenttype= "text/html; Charset=utf-8 "pageencoding=" Utf-8 "%><%@ taglib uri=" http://www.springframework.org/tags/form "prefix=" form " %><! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" "Http://www.w3.org/TR/html4/loose.dtd" >
　　
student_result.jsp
<%@ page language= "java" contenttype= "text/html; Charset=utf-8 "    pageencoding=" utf-8 "%><%@ page iselignored=" false "%><! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" "Http://www.w3.org/TR/html4/loose.dtd" >
　　
Spring mvc:hibernate Validator (field cannot be empty, in 1-150 itself)