Spring Boot的应用需要在Servlet3.0容器中运行,我们知道Servlet 3.0是不需要配置web.xml的。如果想在Servlet2.5容器中运行需要做一下改变:
第一步,引入spring-boot-legacy包:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-legacy</artifactId>
<version>1.1.0.RELEASE</version>
</dependency>
第二步,在main目录下新建webapp/WEB-INF/web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<context-param>
<param-name>contextConfigLocation</param-name>
<!-- 配置Application启动类的具体位置
如启动类在com.example.DemoApplication.java,则配置如下 -->
<param-value>com.example.DemoApplication</param-value>
</context-param>
<listener>
<!-- 配置springboot的Servlet容器监听器 -->
<listener-class>org.springframework.boot.legacy.context.web.SpringBootContextLoaderListener</listener-class>
</listener>
<!-- 注册 dispatcherServlet -->
<servlet>
<servlet-name>appServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextAttribute</param-name>
<param-value>org.springframework.web.context.WebApplicationContext.ROOT</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>