如何将SpringBoot项目改为外置Tomcat启动

旧城等待， 2023-07-05 07:58 7阅读 0赞

正常情况下，我们开发 SpringBoot 项目，由于内置了Tomcat，所以项目可以直接启动，部署到服务器的时候，直接打成 jar 包，就可以运行了 (使用内置 Tomcat 的话，可以在 application.yml 中进行相关配置)  
  
有时我们会需要打包成 war 包，放入外置的 Tomcat 中进行运行，步骤如下   
一、排除内置 Tomcat  
  
<dependency>  
    <groupId>org.springframework.boot</groupId>  
    <artifactId>spring-boot-starter-web</artifactId>  
    <exclusions>  
        <exclusion>  
            <groupId>org.springframework.boot</groupId>  
            <artifactId>spring-boot-starter-tomcat</artifactId>  
        </exclusion>  
    </exclusions>  
</dependency>  
  
二、将打包方式更改为 war  
  
<packaging>war</packaging>  
  
三、修改启动类  
  
使启动类继承 SpringBootServletInitializer 类，并覆盖 configure 方法  
  
@SpringBootApplication  
public class DemoApplication extends SpringBootServletInitializer \{  
  
    @Override  
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) \{  
        return builder.sources(DemoApplication.class);  
    \}  
  
    public static void main(String\[\] args) \{  
        SpringApplication.run(DemoApplication.class, args);  
    \}  
\}  
  
四、添加依赖  
  
由于 SpringBootServletInitializer 类需要用到 servlet-api 的相关 jar 包，所以需要添加依赖  
  
<dependency>  
    <groupId>javax.servlet</groupId>  
    <artifactId>javax.servlet-api</artifactId>  
    <version>4.0.1</version>  
    <scope>provided</scope>  
</dependency>  
  
五、配置外置 Tomcat  
  
    首先点击右上角的图标  
  
![format_png][]

弹出弹框，配置 Artifacts  
![format_png 1][]

然后点击 Edit Configurations

![format_png 2][]  
  
    弹出弹框，点击 + 号配置本地 Tomcat  
![format_png 3][]

接着在 Deployment 中添加之前配置的 Artifact，并将项目根目录设置为 /  
![format_png 4][]

六、查看结果  
  
最后启动项目，在浏览器中输入 http://localhost 就可以看到结果了

@RequestMapping("/")
    public String showIndex(@RequestParam(name = "name", required = false) String name,
                            @RequestParam(name = "pageNow", defaultValue = "1") Integer pageNow,
                            @RequestParam(name = "pageSize", defaultValue = "3") Integer pageSize,
                            Model model) {
        //分页查询
        PageInfo<User> usersByPages = userService.getUsersByPages(name, pageNow, pageSize);
        //数据放入model
        if (usersByPages != null) {
            model.addAttribute("userList", usersByPages);
        }
        return "index";
    }

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[format_png 2]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9pbWcyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTEzNjI3Ny8yMDE5MTEvMTEzNjI3Ny0yMDE5MTEwNzE2MjA1MDE1OC0xNjkxMTAyOTgyLnBuZw?x-oss-process=image/format,png
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[format_png 4]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9pbWcyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTEzNjI3Ny8yMDE5MTEvMTEzNjI3Ny0yMDE5MTEwNzE2MjEzNTI4Ni0xODkwNzcyNTAxLnBuZw?x-oss-process=image/format,png