SpringBoot打成war包，部署到Tomcat服务器

前言

 SpringBoot默认达成jar包，默认使用内置的Tomcat。但考虑到项目需要打成war包部署到外部的Tomcat服务器中。把SpringBoot项目按照平常的web项目一样发布到tomcat容器下。

1、修改pom.xml文件将默认的jar（默认创建项目的时候没有packaging**）方式改为war。**

1    <modelVersion>4.0.0</modelVersion>
2    <parent>
3        <groupId>org.springframework.boot</groupId>
4        <artifactId>spring-boot-starter-parent</artifactId>
5        <version>2.2.2.RELEASE</version>
6        <relativePath/> <!-- lookup parent from repository -->
7    </parent>
8    <groupId>com.example.mybaties</groupId>
9    <artifactId>springbootmybaties</artifactId>
10    <version>0.0.1-SNAPSHOT</version>
11    <name>springbootmybaties</name>
12    <description>Demo project for Spring Boot</description>
13    <!--默认为jar方式-->
14    <!--<packaging>jar</packaging>-->
15    <!--改为war方式-->
16    <packaging>war</packaging>

2、排除内置的Tomcat容器

1）第一种方式

1       <dependency>
2            <groupId>org.springframework.boot</groupId>
3            <artifactId>spring-boot-starter-web</artifactId>
4            <!--排除内置的Tomcat容器-->
5            <exclusions>
6                <exclusion>
7                    <groupId>org.springframework.boot</groupId>
8                    <artifactId>spring-boot-starter-tomcat</artifactId>
9                </exclusion>
10            </exclusions>
11        </dependency>

2）第二种方式

1        <dependency>
2            <groupId>org.springframework.boot</groupId>
3            <artifactId>spring-boot-starter-tomcat</artifactId>
4            <scope>provided</scope>
5        </dependency>

3、继承org.springframework.boot.web.servlet.support.SpringBootServletInitializer，重写configure方法。

1）第一种方式，启动类继承SpringBootServletInitializer重写configure

1package com.example.mybaties;
2
3import org.springframework.boot.SpringApplication;
4import org.springframework.boot.autoconfigure.SpringBootApplication;
5import org.springframework.boot.builder.SpringApplicationBuilder;
6import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
7
8@SpringBootApplication
9public class SpringbootmybatiesApplication extends SpringBootServletInitializer {
10
11    public static void main(String[] args) {
12        SpringApplication.run(SpringbootmybatiesApplication.class, args);
13    }
14
15    @Override
16    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
17        return builder.sources(SpringbootmybatiesApplication.class);
18    }
19
20
21}

2）新增加一个类继承SpringBootServletInitializer重写configure

1package com.example.mybaties.config;
2
3import com.example.mybaties.SpringbootmybatiesApplication;
4import org.springframework.boot.builder.SpringApplicationBuilder;
5import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
6
7/**
8 * @author LST
9 * @version 1.0
10 * @Description:
11 * @date 2020-1-17 16:19
12 */
13public class ServletInitializer extends SpringBootServletInitializer {
14
15    @Override
16    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
17        //此处的Application.class为带有@SpringBootApplication注解的启动类
18        return builder.sources(SpringbootmybatiesApplication.class);
19    }
20}

4、为了防止应用上下文所导致的项目访问资源加载不到的问题，建议pom.xml文件中<build></build>标签下添加<finalName></finalName>标签

1   <build>
2        <!--上下文路径-->
3        <finalName>mybaties</finalName>
4        <plugins>
5            <plugin>
6                <groupId>org.springframework.boot</groupId>
7                <artifactId>spring-boot-maven-plugin</artifactId>
8            </plugin>
9        </plugins>
10    </build>

5、打成war包

先clean再打包：mvn clean package -Dmaven.test.skip=true，也可使用idea自带的打包

6、将war包放入tomcat中，我使用的是tomcat8.

7、进入tomcat的bin目录下启动项目

8、直接用浏览器访问我的接口（这个接口是get）http://127.0.0.1:8080/mybaties/user/0ac94d4eab22610c71af9a02bd4e296c，或者使用postman等测试工具。