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SpringMVC4 实例
之前我先创建普通web项目,再直接添加maven框架。结果springMVC框架一直不能正确的访问控制器。
但通过以下方式创建maven web项目就能获得正确的架构路径。
1、新建一个maven项目,并创建webapp骨架。
2、点击项目结构按钮
3、将java文件夹设置成sources目录
4、最后配置poem.xml文件:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>java-springmvc-demo5</groupId> <artifactId>java-springmvc-demo5</artifactId> <packaging>war</packaging> <version>1.0-SNAPSHOT</version> <name>java-springmvc-demo5 Maven Webapp</name> <url>http://maven.apache.org</url> <!--项目依赖 --> <dependencies> <!--日志包--> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>1.7.21</version> </dependency> <!--j2ee相关包 servlet、jsp、jstl--> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.2</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!--spring相关包--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>4.3.1.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>4.3.1.RELEASE</version> </dependency> <!--其他需要的包--> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <version>3.4</version> </dependency> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.1</version> </dependency> </dependencies> <build> <finalName>maven-springmvc</finalName> <resources> <!--表示把java目录下的有关xml文件,properties文件编译/打包的时候放在resource目录下--> <resource> <directory>${basedir}/src/main/java</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> </resource> <resource> <directory>${basedir}/src/main/resources</directory> </resource> </resources> <plugins> <!--servlet容器 jetty插件--> <plugin> <groupId>org.eclipse.jetty</groupId> <artifactId>jetty-maven-plugin</artifactId> <version>9.3.10.v20160621</version> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.6</source> <target>1.6</target> </configuration> </plugin> </plugins> </build> </project>
整个pringMVC项目结构如下:
web.xml:
<?xml version="1.0" encoding="UTF-8"?> <web-app id="WebApp_ID" version="2.5" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <display-name>java-springmvc-demo5</display-name> <servlet> <servlet-name>SpringMVC</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 默认的servlet.xml文件是放在WEB-INF目录下,名称与<servlet-name>的名字要相关。但可以通过以下设置重新自定义servlet.xml配置文件的位置和名称。--> <!--<init-param>--> <!--<param-name>contextConfigLocation</param-name>--> <!--<param-value>/WEB-INF/SpringMVC-servlet.xml</param-value>--> <!--</init-param>--> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>SpringMVC</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!--欢迎页面--> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>
SpringMVC-servlet.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" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.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-3.0.xsd"> <bean name="/hello" class="com.example.controller.HelloController"></bean> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/"></property> <property name="suffix" value=".jsp"></property> </bean> </beans>
HelloController.java:
package com.example.controller; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.mvc.Controller; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class HelloController implements Controller { @Override public ModelAndView handleRequest(HttpServletRequest arg0,HttpServletResponse arg1) throws Exception { //跳转到hello_word.jsp页面 return new ModelAndView("hello_word"); } }
流程:
通过“http://localhost:8080/”路径访问的是欢迎页面index.jsp。
通过“http://localhost:8080/hello”路径访问的是HelloController控制器,再通过控制器访问到hello_word.jsp页面。
SpringMVC4 实例
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