![$2]UOGWI~JCJNU00HKN3_[5.jpg](https://ucc.alicdn.com/pic/developer-ecology/3ed12fbab11f47edb0da3032a920c278.jpg?x-oss-process=image/resize,w_1400/format,webp "$2]UOGWI~JCJNU00HKN3_[5.jpg")
讲述SpringMVC + Intellij IDEA + Tomcat环境搭建。
前言
上周五转岗到小米其它部门，第一件事情就是需要搭建环境，周围同事本来想用Intellij IDEA来搭建环境，但是都失败了，结果后来都用Eclipse，所以想自己倒腾一下，花了3个小时终于把环境搭建好了，特此记录一下。
使用环境
Intellij IDEA 2020.1
JDK 1.8.0_211
spring 4.3.14
Tomcat 8.5.69
Tomcat安装
文章中说的方法，有几个点需要注意：
- 文中说是在网址中输入“localhost”，这个其实不对，应该输入“localhost:8080”；
- 不一定需要把Tomcat拷贝到/Library/Tomcat中，因为根目录或导致权限问题，为了更简单，我直接把Tomcat放入我本地目录下，比如"/Users/mengloulv/Documents/Java/apache-tomcat-8.5.69"，一样用的飞起。
SpringMVC
代码结构
其它代码我都删掉了，只保留最核心的部分：
代码和配置
applicationContext.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:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!--使用context命名空间，通知spring扫描指定目录，进行注解的解析--> <context:component-scan base-package="com.lvmenglou"/> <!--启用@Autowired等注解--> <context:annotation-config/> </beans>
web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app 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_3_0.xsd" version="3.0"> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <!--DispatcherServlet--> <servlet> <servlet-name>springmvc-deom</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <!--配置XML文件路径 第2步新建的文件--> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> <async-supported>true</async-supported> </servlet> <servlet-mapping> <servlet-name>springmvc-deom</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> </web-app>
index.jsp
<html> <body> <h2>Hello World!</h2> </body> </html>
pom.xml
<?xml version="1.0" encoding="UTF-8"?> <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/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>org.example</groupId> <artifactId>springmvc-deom</artifactId> <version>1.0-SNAPSHOT</version> <packaging>war</packaging> <name>demo4 Maven Webapp</name> <url>http://www.example.com</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <maven.compiler.source>1.7</maven.compiler.source> <maven.compiler.target>1.7</maven.compiler.target> <spring.version>4.3.14.RELEASE</spring.version> </properties> <dependencies> <!-- Spring核心依赖 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${spring.version}</version> </dependency> <!-- Spring web依赖 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> </dependencies> <build> <!-- 如果不加这个，执行时，会找不到*.xml文件，参考：https://blog.csdn.net/wt_better/article/details/90261220 --> <resources> <resource> <directory>src/main/java</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> <filtering>false</filtering> </resource> <resource> <directory>src/main/resources</directory> <includes> <include>**/*.*</include> </includes> <filtering>false</filtering> </resource> </resources> </build> </project>
HelloWord.java
@Controller public class HelloWord { @RequestMapping("/test") @ResponseBody public String test() { return "My first test!"; } }
Tomcat配置
我的Tomcat安装路径为：/Users/mengloulv/Documents/Java/apache-tomcat-8.5.69
![A$SQKUI`Z89$B6~K1`FPY]P.jpg](https://ucc.alicdn.com/pic/developer-ecology/259f7467456c4e3da737e110085b10d5.jpg?x-oss-process=image/resize,w_1400/format,webp "A$SQKUI`Z89$B6~K1`FPY]P.jpg")
这里说明一下Fix中，选择两者的区别：
- war模式：将WEB工程以包的形式上传到服务器 ；
- war exploded模式：将WEB工程以当前文件夹的位置关系上传到服务器；
![9O2CAM8`4$02A]9KW7YA7I0.jpg](https://ucc.alicdn.com/pic/developer-ecology/15e94c5d4322436eb151d2a0b576830a.jpg?x-oss-process=image/resize,w_1400/format,webp "9O2CAM8`4$02A]9KW7YA7I0.jpg")
你选择“war exploded模式”后，会在Application context中给出指定路径，如果你在Server中配置的URL为“http://localhost:8080”，那么在Application context需要修改为“/”，这里千万不要加路径，否则到时你访问“http://localhost:8080”时会失败。
启动服务
![`X`CY3_K`AN]15CANT6WW5K.png](https://ucc.alicdn.com/pic/developer-ecology/2f485b08bc7c4f7b959e17daa9403ed6.png?x-oss-process=image/resize,w_1400/format,webp "`X`CY3_K`AN]15CANT6WW5K.png")
访问“http://localhost:8080/”：
访问“http://localhost:8080/test”
