spring-boot项目中，默认提供内嵌的tomcat，所以打包直接生成jar包，用Java -jar命令就可以启动。

但是也有一定的需求，会使用外部tomcat来部署项目。下面来看：

 

1.新建项目boot-tomcat-test

2.pom依赖：(添加spring-boot-starter-tomcat依赖，打包方式为war)

      
          
       
        4.0.0
           
       
        boot-tomcat
           
       
        com.boot.tomcat
           
       
        1.0-SNAPSHOT
           
           
               
        
         org.springframework.boot
                
        
         spring-boot-starter-parent
                
        
         1.3.2.RELEASE
                
            
           
               
        
         UTF-8
                
        
         1.8
            
           
               
                    
         
          org.springframework.boot
                     
         
          spring-boot-starter
                 
                
                    
         
          org.springframework.boot
                     
         
          spring-boot-starter-test
                     
         
          test
                 
                
                    
         
          org.springframework.boot
                     
         
          spring-boot-starter-web
                 
                
                    
         
          org.springframework.boot
                     
         
          spring-boot-starter-tomcat
                 
            
           
           
       
        war
       
      

3.启动App继承SpringBootServletInitializer类，并重写configure方法

package boottest;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.boot.builder.SpringApplicationBuilder;import org.springframework.boot.context.web.SpringBootServletInitializer;/** * App类描述: *  继承SpringBootServletInitializer，可以用tomcat部署 * @author yangzhenlong * @since 2017/5/3 */@SpringBootApplicationpublic class App extends SpringBootServletInitializer{    @Override    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {        return builder.sources(App.class);    }    public static void main(String[] args) throws Exception {        SpringApplication.run(App.class, args);    }}

4.Controller：

package boottest;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;/** * IndexController类描述: * * @author yangzhenlong * @since 2017/5/3 */@RestControllerpublic class IndexController {    @RequestMapping("/")    public String index(){        return "hello boot";    }}

5.配置项目到tomcat，然后启动tomcat

访问：http://localhost:8080/

ok了！