将springboot项目发布到tomcat上

一、tomcat版本：8.0以上

二、修改打包方式，将pom.xml中的packaging的jar改为war

原来：

    <groupId>com.shop</groupId>
    <artifactId>shop</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

修改后：

    <groupId>com.shop</groupId>
    <artifactId>shop</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>war</packaging>

三、去除springboot内置的tomcat

pom.xml代码如下：

<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>                            

四、加入servlet-api

<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>javax.servlet-api</artifactId>
    <scope>provided</scope>
</dependency>

五、修改启动类，并重写初始化方法

原来的启动类，类似如下：

package com.shop;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class ShopApplication {

    public static void main(String[] args) {
        SpringApplication.run(ShopApplication.class, args);
    }
}

让启动类继承SpringBootServletInitializer，重写初始化方法：

package com.shop;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;

@SpringBootApplication
public class ShopApplication extends SpringBootServletInitializer {

    public static void main(String[] args) {
        SpringApplication.run(ShopApplication.class, args);
    }
    
    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        return builder.sources(this.getClass());
    }
}

六、导出war包放入tomcat的webapps目录下，启动tomcat进行测试：

七、部署在tomcat7.0会报错（具体原因待考究，欢迎各路老鸟指正），此项目为练习项目，只有一个启动类和一个controller类。