Java notes Spring (i)

First, Spring framework

Source Address: Https://github.com/spring-projects/spring-framework

Build tools: Gradle,gradle Tutorial: https://www.w3cschool.cn/gradle/

Gradle based on groovy language, groovy Tutorial: https://www.w3cschool.cn/groovy/

Data related to JSR standards : Https://jcp.org/en/jsr/all

Two, Spring Framework module

Official documents: https://docs.spring.io/spring/docs/4.3.17.RELEASE/spring-framework-reference/htmlsingle/#overview-modules

Iii. Building a DEMO-SPRINGMVC project using Maven

Maven (check create from archetype, select Maven-archetype-webapp), File-New Project, Next

GroupId:com.example

Artifactid:demo-spring

Next, Next
Project name:demo-spring

Finish

Comparing the two figure above, it is found that the difference is only in the web structure, and the default web structure needs to be modified. Go on...

Add Spring MVC Framework support to add spring MVC dependencies directly under dependencies in the Pom.xml file

<!--Https://mvnrepository.com/artifact/org.springframework/spring-webmvc -<Dependency>    <groupId>Org.springframework</groupId>    <Artifactid>Spring-webmvc</Artifactid>    <version>4.3.17.RELEASE</version></Dependency>

Replace Web. xml

<?XML version= "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">  <Context-param>    <Param-name>Contextconfiglocation</Param-name>    <Param-value>/web-inf/applicationcontext.xml</Param-value>  </Context-param>  <Listener>    <Listener-class>Org.springframework.web.context.ContextLoaderListener</Listener-class>  </Listener>  <servlet>    <Servlet-name>Dispatcher</Servlet-name>    <Servlet-class>Org.springframework.web.servlet.DispatcherServlet</Servlet-class>    <Load-on-startup>1</Load-on-startup>  </servlet>  <servlet-mapping>    <Servlet-name>Dispatcher</Servlet-name>    <Url-pattern>/</Url-pattern>  </servlet-mapping>  <welcome-file-list>    <Welcome-file>index.jsp</Welcome-file>  </welcome-file-list></Web-app>

Add Applicationcontext.xml under Web-inf

<? XML version= "1.0" encoding= "UTF-8" ?> <  xmlns= "Http://www.springframework.org/schema/beans"       xmlns:xsi= " Http://www.w3.org/2001/XMLSchema-instance "       xsi:schemalocation="/http/ Www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd "  ></beans>

Dispatcher-servlet.xml

<?XML version= "1.0" encoding= "UTF-8"?><Beansxmlns= "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.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 ">    <!--Spring Basic Annotation Support -    <Context:annotation-config/>    <!--MVC Annotation Support -    <Mvc:annotation-driven/>    <!--Static Resource Mapping -    <mvc:resourcesMapping= "/css/**" Location= "/web-inf/statics/css/"/>    <mvc:resourcesMapping= "/js/**" Location= "/web-inf/statics/js/"/>    <mvc:resourcesMapping= "/image/**" Location= "/web-inf/statics/image/"/>    <!--JSP template View Support -    <BeanID= "Defaultviewresolver"class= "Org.springframework.web.servlet.view.InternalResourceViewResolver">        < Propertyname= "Viewclass"value= "Org.springframework.web.servlet.view.JstlView"/>        < Propertyname= "prefix"value= "/web-inf/view/"/>        < Propertyname= "suffix"value= ". jsp"/>        < Propertyname= "Exposecontextbeansasattributes"value= "true"/>    </Bean>    <!--Automatic Scanning Assembly -    <Context:component-scanBase-package= "Com.example.demo"/></Beans>

Write a controller, run and see.

Two folders, Java, and test are built under SRC----set the resource type after creation.

The Java folder is set to Sources,test folder set to Tests

Create a test controller

Configuring the test server

Click Start to access Localhost:8080/user/get

Will show??

Cause: Spring MVC default Output character set iso-8859-1, you need to adjust the output character set to Utf-8

Start again, Access Localhost:8080/user/get, show normal.

Java notes Spring (i)