Springboot基于tomcat启动读取外部配置文件

r囧r小猫 2021-09-23 12:02 1062阅读 0赞

*  项目结构

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3BpZ3FoZg_size_16_color_FFFFFF_t_70][]

*  pom.xml

<packaging>war</packaging>
    
    	<parent>
    		<groupId>org.springframework.boot</groupId>
    		<artifactId>spring-boot-starter-parent</artifactId>
    		<version>2.1.4.RELEASE</version>
    		<relativePath /> 
    	</parent>
    
    	<properties>
    		<java.version>1.8</java.version>
    	</properties>
    
    	<dependencies>
    		<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>
    
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-test</artifactId>
    			<scope>test</scope>
    			<exclusions>
    				<exclusion>
    					<groupId>org.junit.vintage</groupId>
    					<artifactId>junit-vintage-engine</artifactId>
    				</exclusion>
    			</exclusions>
    		</dependency>
    		
    		
    		  
            <dependency>
                <groupId>org.apache.tomcat.embed</groupId>
                <artifactId>tomcat-embed-jasper</artifactId>
            </dependency>
            
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>javax.servlet-api</artifactId>
            </dependency>
    		
    	</dependencies>
    
    	<build>
            
    		<finalName>outconfig-demo</finalName>
    		<plugins>
    			<plugin>
    				<groupId>org.apache.maven.plugins</groupId>
    				<artifactId>maven-war-plugin</artifactId>
                <configuration>
                    <failOnMissingWebXml>false</failOnMissingWebXml>
                </configuration>
    			</plugin>
    		</plugins>
    	</build>

*  启动类，App

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

*  配置tomcat 启动读取外部文件

public class AppConfig extends SpringBootServletInitializer  {
    	@Override
    	protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
    		return builder.sources(App.class);
    	}
    }

*  获取属性并赋值，指定参数

@Configuration
    @PropertySource("file:${mypath.config}/application.properties")
    public class DemoConfig {
    	
    	@Value("${user.username}")
    	private String key;
    	
    	@Value("${user.password}")
    	private String value;
    
    	public String getKey() {
    		return key;
    	}
    
    	public void setKey(String key) {
    		this.key = key;
    	}
    
    	public String getValue() {
    		return value;
    	}
    
    	public void setValue(String value) {
    		this.value = value;
    	}
    
    	@Override
    	public String toString() {
    		return "DemoConfig [key=" + key + ", value=" + value + "]";
    	}
    
    }

*   controller测试类，预期打印出DemoConfig内容

@Controller
    @RequestMapping("/test")
    public class TestController {
    
    	@Autowired
    	private DemoConfig demoConfig;
    	
    	@RequestMapping("/getConfig")
    	@ResponseBody
    	public String getConfig() {
    		return demoConfig.toString();
    	}
    }

*   项目下的application.properties

spring.profiles.active=outConfig

--------------------

windows环境下：

*  D:\\test 路径下编辑 application.properties

user.username=qhf
    user.password=abcdefg

*  eclipse 启动 tomcat，添加参数

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3BpZ3FoZg_size_16_color_FFFFFF_t_70 1][]

*   启动tomcat

![20191129111737924.png][]

*  运行测试

![20191129112102181.png][]

--------------------

linux 环境下：

*  打成 war 包上传到 tomcat 的 webapps 目录下：run as Maven build

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3BpZ3FoZg_size_16_color_FFFFFF_t_70 2][]

*  vim /app/tomcat/tomcat-8080/bin/setenv.sh

#!/bin/bash
    
    JAVA_HOME=/usr/local/jdk1.8.0_191
    
    CATALINA_HOME=/app/tomcat/tomcat-8080
    
    CATALINA_PID=/app/tomcat/tomcat-8080/bin/tomcat.pid
    
    JAVA_OPTS="-server -Dfile.encoding=UTF-8 -Djava.awt.headless=true"
    JAVA_OPTS="$JAVA_OPTS -server -Xms2G -Xmx2G -XX:MaxNewSize=512m -XX:MaxMetaspaceSize=512m -XX:MetaspaceSize=512m"
    
    JAVA_OPTS="$JAVA_OPTS -Dmypath.config=/home/qhf"

*  运行 tomcat

![20191129112455550.png][]

*  访问测试

![20191129112540565.png][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3BpZ3FoZg_size_16_color_FFFFFF_t_70]: /images/20210923/5c7fe7b3824f42ed9cc024343ffec289.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3BpZ3FoZg_size_16_color_FFFFFF_t_70 1]: /images/20210923/b8adc697508b4ce6b350155724d8f2ea.png
[20191129111737924.png]: /images/20210923/50564ec317054d90b051e433c89526b3.png
[20191129112102181.png]: /images/20210923/896eac2ac2a94a84ad7e3a5c6b22f9e5.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3BpZ3FoZg_size_16_color_FFFFFF_t_70 2]: /images/20210923/1b5d4811374d4a4289f5dc513a40750c.png
[20191129112455550.png]: /images/20210923/0f46e084e6174739936dd5c6fa6ea445.png
[20191129112540565.png]: /images/20210923/0af39963bdc343279aa28621bc13a84e.png