The configuration and use of Spring MVC

The configuration and use of Spring MVC

Note Warehouse: https://github.com/nnngu/LearningNotes

Jar packages required by Spring MVC

The version used by Spring MVC in the article is 3.2.18, and the jar package is required as follows:

spring-webmvcjstl 1.1.2aopalliance 1.0commons-logging 1.1.1spring-aopspring-beansspring-contextspring-corespring-expressionspring-web

Java projects built using Maven need to add the following dependencies in Pom.xml:

        <dependency>            <groupId>Org.springframework</groupId>            <artifactId>Spring-webmvc</artifactId>            <version>3.2.18.RELEASE</version>        </dependency>        <dependency>            <groupId>Jstl</groupId>            <artifactId>Jstl</artifactId>            <version>1.1.2</version>        </dependency>        <dependency>            <groupId>Aopalliance</groupId>            <artifactId>Aopalliance</artifactId>            <version>1.0</version>        </dependency>        <dependency>            <groupId>Commons-logging</groupId>            <artifactId>Commons-logging</artifactId>            <version>1.1.1</version>        </dependency>        <dependency>            <groupId>Org.springframework</groupId>            <artifactId>Spring-aop</artifactId>            <version>3.2.18.RELEASE</version>        </dependency>        <dependency>            <groupId>Org.springframework</groupId>            <artifactId>Spring-beans</artifactId>            <version>3.2.18.RELEASE</version>        </dependency>        <dependency>            <groupId>Org.springframework</groupId>            <artifactId>Spring-context</artifactId>            <version>3.2.18.RELEASE</version>        </dependency>        <dependency>            <groupId>Org.springframework</groupId>            <artifactId>Spring-core</artifactId>            <version>3.2.18.RELEASE</version>        </dependency>        <dependency>            <groupId>Org.springframework</groupId>            <artifactId>Spring-expression</artifactId>            <version>3.2.18.RELEASE</version>        </dependency>        <dependency>            <groupId>Org.springframework</groupId>            <artifactId>Spring-web</artifactId>            <version>3.2.18.RELEASE</version>        </dependency>

Pre-preparation

1. com.nnngu.entity Create under the packageUser.java

The code is as follows:

Package com.nnngu.entity;import java.io.Serializable; Public classUserImplementsSerializable {Private Static Final LongSerialversionuid = 1L;PrivateString name;PrivateInteger age;PrivateString pwd; PublicStringGetName() {returnName } Public void SetName(String name) { This.name= name; } PublicIntegerGetage() {returnAge } Public void Setage(Integer Age) { This. Age= age; } PublicStringgetpwd() {returnPwd } Public void setpwd(String pwd) { This.pwd= pwd; }}

2. Create two JSP pages in the location shown

create.jspThe code is as follows:

<%--Created by IntelliJ.User:lijiaweidate:13/02/2018time:14:08To change this template use File | Settings | File Templates.--%><%@ pagelanguage="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 ">http-equiv="Content-type"content="text/html; Charset=utf-8 "> <title> Create User </title>Action="Save"Method="POST"> <fieldset> <legend> Create user </legend> <p> <label> name: &LT;/LABEL&G T <inputtype="Text"ID="Name"name="Name"TabIndex="1"> </p> <p> <label> age:</label> <inputtype="Text"ID="Age"name="Age"TabIndex="2"> </p> <p> <label> password:</label> <inputtype="Text"ID="PWD"name="PWD"TabIndex="3"> </p> <pID="Buttons"> <inputID="Reset"type="Reset"TabIndex="4"value="Reset"> <inputID="Submit"type="Submit"TabIndex="5"value="Create"> </p> </fieldset></form></body>

detail.jspThe code is as follows:

<%--Created by IntelliJ.User:lijiaweidate:13/02/2018time:14:08To change this template use File | Settings | File Templates.--%><%@ pagelanguage="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 ">http-equiv="Content-type"content="text/html; Charset=utf-8 "> <title> User Details </title>ID="Gloobal"> 

Configure Spring MVC

1. Configure the following in the Web. xml file:

<?xmlVersion= "1.0" encoding= "UTF-8"?><web-appxmlns="Http://xmlns.jcp.org/xml/ns/javaee"xmlns:xsi="Http://www.w3.org/2001/XMLSchema-instance"xsi:schemalocation="Http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"version="3.1">    <filter>        <description>Character Set Filter</description>        <filter-name>Encodingfilter</filter-name>        <filter-class>Org.springframework.web.filter.CharacterEncodingFilter</filter-class>        <init-param>            <description>Character Set encoding</description>            <param-name>Encoding</param-name>            <param-value>UTF-8</param-value>        </init-param>    </filter>    <filter-mapping>        <filter-name>Encodingfilter</filter-name>        <url-pattern>/*</url-pattern>    </filter-mapping>    <servlet>        <servlet-name>Appservlet</servlet-name>        <servlet-class>Org.springframework.web.servlet.DispatcherServlet</servlet-class>        <init-param>            <param-name>Contextconfiglocation</param-name>            <param-value>Classpath:spring/springmvc-context.xml</param-value>        </init-param>        <load-on-startup>1</load-on-startup>    </servlet>    <servlet-mapping>        <servlet-name>Appservlet</servlet-name>        <url-pattern>/</url-pattern>    </servlet-mapping></web-app>

2. Create in the location shownspringmvc-context.xml

springmvc-context.xmlThe code is as follows:

<?xmlVersion= "1.0" encoding= "UTF-8"?><beans:beansxmlns:beans="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"xmlns:p="http://www.springframework.org/schema/p"xsi:schemalocation="Http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd Http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/ Spring-beans-3.0.xsdHttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/ Spring-context-3.0.xsd ">    <!--scan all classes in the package to complete the function of bean creation and automatic dependency injection-    <context:component-scanbase-package="Com.nnngu"/>    <!--start the spring MVC-based annotation feature to add controller and method mappings to the container --    <mvc:annotation-driven/>    <!--This class for spring MVC View resolution --    <beans:beanid="Viewresolver"class="Org.springframework.web.servlet.view.InternalResourceViewResolver">        <beans:propertyname="prefix"value="/web-inf/pages/"/>        <beans:propertyname="suffix"value=". JSP"/>    </beans:bean></beans:beans>

3. Write Controller

Created in the location shown UserController.java , the code is as follows:

Package Com.nnngu;import Com.nnngu.entity.User;import Org.springframework.stereotype.Controller;import Org.springframework.ui.Model;import Org.springframework.web.bind.annotation.ModelAttribute;import org.springframework.web.bind.annotation.RequestMapping;/*** User Management */@Controller Public classUsercontroller {@RequestMapping("") PublicStringCreate(Model model) {return "Create"; }@RequestMapping("/save") PublicStringSave(@ModelAttribute("Form"User user, model model) {//User: The Form object that the view layer passes to the control layer; Model: the object that the control layer returns to the view layerModel.AddAttribute("User", user);return "Detail"; }}

Test

Start Project, enter in browserlocalhost:8080

The test was successful.

The configuration and use of Spring MVC