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一、创建项目
1、使用Maven创建J2EE项目
https://blog.csdn.net/shaohe18362202126/article/details/79547621
2、加入Maven的jar包依赖
<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.0.5.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.tomcat/tomcat-servlet-api -->
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-servlet-api</artifactId>
<version>7.0.42</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-logging/commons-logging -->
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1.3</version>
</dependency>
二、配置项目
1、创建SpringMVC配置文件
(1)在src/main/resources目录下新建dispatcherServlet-servlet.xml文件。
(2)配置自定扫描的包
<!-- 配置自定扫描的包 -->
<context:component-scan base-package="com.starfall.springmvc"></context:component-scan>
(3)配置视图解析器
<!-- 配置视图解析器: 如何把 handler 方法返回值解析为实际的物理视图 -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
2、在web.xml中配置DispatcherServlet
<servlet>
<servlet-name>springDispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:dispatcherServlet-servlet.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>springDispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
- <url-pattern>/</url-pattern>会匹配到/login这样的路径型url,拦截所有(不包括jsp) (包含.js 、.png 、.css)
- <url-pattern>/*</url-pattern>会匹配所有url:拦截所有的资源 。会出现返回jsp视图时再次进入spring的DispatcherServlet 类,导致找不到对应的controller所以报404错。
- 下方会介绍处理静态资源
3、创建controller测试
@Controller
public class HelloWorld {
@RequestMapping("/helloworld")
public String hello() {
System.out.println("hello world");
return "success";
}
}
新建index.jsp页面:
新建成功页:success.jsp