1.修改pom.xml,過濾src/main/resources目錄下.properties文件

pom.xml

pom.xml代碼：

<code> <build>
        <finalname>XXXX/<finalname>
        <plugins>
            <plugin>
                <groupid>org.springframework.boot/<groupid>
                <artifactid>spring-boot-maven-plugin/<artifactid>
            /<plugin>
        /<plugins>
        <resources>
            <resource>
                <directory>src/main/resources/<directory>
                <excludes>
                    <exclude>**/*.properties/<exclude>
                /<excludes>
            /<resource>
        /<resources>
    /<build>/<code>

2.在resources目錄下創建META_INF/spring.factories文件(注意META_INF文件夾也是要創建的)

spring.factories

spring.factories內容：

<code>org.springframework.boot.env.EnvironmentPostProcessor=com.config.LocalSettingsEnvironmentPostProcessor
/<code>

3.新建LocalSettingsEnvironmentPostProcessor.java加載外部屬性文件application.properties

LocalSettingsEnvironmentPostProcessor

LocalSettingsEnvironmentPostProcessor.java代碼如下：

<code>package com.config;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.env.EnvironmentPostProcessor;
import org.springframework.core.env.ConfigurableEnvironment;
import org.springframework.core.env.MutablePropertySources;
import org.springframework.core.env.PropertiesPropertySource;
import org.springframework.core.io.FileSystemResource;
import org.springframework.core.io.support.PropertiesLoaderUtils;

import java.io.File;
import java.io.IOException;
import java.util.Properties;

/**
 * @author 光州程序猿
 * @version 1.0
 */
public class LocalSettingsEnvironmentPostProcessor implements EnvironmentPostProcessor {
    private static final String LOCATION = "C:\\\\Users\\\\Desktop\\\\application.properties";

    @Override
    public void postProcessEnvironment(ConfigurableEnvironment configurableEnvironment, SpringApplication springApplication) {
        File file = new File(LOCATION);
        try {
            MutablePropertySources propertySources = configurableEnvironment.getPropertySources();
            Properties properties = loadProperties(file);
            propertySources.addFirst(new PropertiesPropertySource("Config", properties));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }


    private Properties loadProperties(File f) {
        FileSystemResource resource = new FileSystemResource(f);
        try {
            return PropertiesLoaderUtils.loadProperties(resource);
        } catch (IOException ex) {
            throw new IllegalStateException("Failed to load local settings from " + f.getAbsolutePath(), ex);
        }
    }
}
/<code>

啟動SpringBoot項目，指定外部application.properties啟動成功。

啟動結果

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關鍵字: 配置文件 程序員