Idea Spring boot+Maven 打包war 发布 外部tomcat

最近由.net 转java 开发。在使用Maven 打包Spring boot 项目时遇到了一个坑，现记录下来，供以后参考

Spring boot 内置tomcat，能让我们快速构建web项目。如果要发布在外部的tomcat 上则需要进行一些配置

pom.xml

<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>com.smart.web</groupId>    <artifactId>com-smart-web</artifactId>    <version>1.0.0</version>    <packaging>war</packaging>    <parent>        <groupId>org.springframework.boot</groupId>        <artifactId>spring-boot-starter-parent</artifactId>        <version>1.3.5.RELEASE</version>    </parent>    <dependencies>        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter</artifactId>        </dependency>        <!-- spring-boot web -->        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-web</artifactId>            <!-- 排除内置容器，排除内置容器导出成war包可以让外部容器运行spring-boot项目-->            <exclusions>                <exclusion>                    <groupId>org.springframework.boot</groupId>                    <artifactId>spring-boot-starter-tomcat</artifactId>                </exclusion>            </exclusions>        </dependency>        <!--<dependency>-->            <!--<groupId>javax.servlet</groupId>-->            <!--<artifactId>javax.servlet-api</artifactId>-->        <!--</dependency>-->    </dependencies>    <!-- Package as an executable jar -->    <build>        <plugins>            <plugin>                <groupId>org.springframework.boot</groupId>                <artifactId>spring-boot-maven-plugin</artifactId>            </plugin>        </plugins>    </build></project>

java启动类
启动类必须放在项目的根目录下面

package com;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.boot.builder.SpringApplicationBuilder;import org.springframework.boot.context.web.SpringBootServletInitializer;/** * Created by felix on 2017/4/11. */@SpringBootApplicationpublic class Application extends SpringBootServletInitializer {    //作用类似javaweb中的web.xml,声明web容器的程序入口，    @Override    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {        return builder.sources(Application.class);    }    public static void main(String[] args) {        System.out.println("服务开始启动...");        try {            SpringApplication.run(Application.class, args);            System.out.println("服务已启动!");        }catch (Throwable ex){            System.out.println("服务启动异常!");        }    }}

Controller 类

package com.smart.controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.bind.annotation.RestController;/** * Created by felix on 2017/4/11. */@RestController@RequestMapping(value = "/home")public class HomeController {    @RequestMapping(value="/index",method = RequestMethod.GET)    public String Index(){        return "smart-web";    }}

使用maven中的package 进行打包，把生成的war包拷贝到tomcat 中的/webapps
发布在tomcat 6中，会导致controller中的方法无法访问，这个问题被坑了好久。
项目发布到tomcat 8中就一切正常了
tomcat 7在电脑上一直启动不成功，所以没有尝试是否可行