Support war package.

build.gradle

@@ -2,6 +2,7 @@ plugins {
     id 'org.springframework.boot' version '2.1.3.RELEASE'
     id "io.freefair.lombok" version "3.1.4"
     id 'java'
+    id 'war'
 }
 
 apply plugin: 'io.spring.dependency-management'

src/main/java/run/halo/app/Application.java

@@ -2,6 +2,8 @@ package run.halo.app;
 
 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;
 import org.springframework.data.jpa.repository.config.EnableJpaAuditing;
 import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
 import org.springframework.scheduling.annotation.EnableAsync;
@@ -21,7 +23,7 @@ import run.halo.app.repository.base.BaseRepositoryImpl;
 @EnableScheduling
 @EnableAsync
 @EnableJpaRepositories(basePackages = "run.halo.app.repository", repositoryBaseClass = BaseRepositoryImpl.class)
-public class Application {
+public class Application extends SpringBootServletInitializer {
 
     public static void main(String[] args) {
         // Customize the spring config location
@@ -30,4 +32,10 @@ public class Application {
         // Run application
         SpringApplication.run(Application.class, args);
     }
+
+    @Override
+    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
+        System.setProperty("spring.config.additional-location", "file:${user.home}/.halo/,file:${user.home}/halo-dev/");
+        return application.sources(Application.class);
+    }
 }