看看这个Dave Syer 的答案实现。
您可以设置 Web 上下文将使用的文档根目录,以使用ConfigurableEmbeddedServletContainer.setDocumentRoot(File documentRoot)
.
工作示例:
package com.example.config;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer;
import org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer;
import org.springframework.boot.web.servlet.ServletContextInitializer;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import org.springframework.util.StringUtils;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import java.io.File;
import java.nio.file.Paths;
@Configuration
public class WebConfigurer implements ServletContextInitializer, EmbeddedServletContainerCustomizer {
private final Logger log = LoggerFactory.getLogger(WebConfigurer.class);
private final Environment env;
private static final String STATIC_ASSETS_FOLDER_PARAM = "static-assets-folder";
private final String staticAssetsFolderPath;
public WebConfigurer(Environment env, @Value("${" + STATIC_ASSETS_FOLDER_PARAM + ":}") String staticAssetsFolderPath) {
this.env = env;
this.staticAssetsFolderPath = staticAssetsFolderPath;
}
@Override
public void onStartup(ServletContext servletContext) throws ServletException {
if (env.getActiveProfiles().length > 0) {
log.info("Web application configuration, profiles: {}", (Object[]) env.getActiveProfiles());
}
log.info(STATIC_ASSETS_FOLDER_PARAM + ": '{}'", staticAssetsFolderPath);
}
private void customizeDocumentRoot(ConfigurableEmbeddedServletContainer container) {
if (!StringUtils.isEmpty(staticAssetsFolderPath)) {
File docRoot;
if (staticAssetsFolderPath.startsWith(File.separator)) {
docRoot = new File(staticAssetsFolderPath);
} else {
final String workPath = Paths.get(".").toUri().normalize().getPath();
docRoot = new File(workPath + staticAssetsFolderPath);
}
if (docRoot.exists() && docRoot.isDirectory()) {
log.info("Custom location is used for static assets, document root folder: {}",
docRoot.getAbsolutePath());
container.setDocumentRoot(docRoot);
} else {
log.warn("Custom document root folder {} doesn't exist, custom location for static assets was not used.",
docRoot.getAbsolutePath());
}
}
}
@Override
public void customize(ConfigurableEmbeddedServletContainer container) {
customizeDocumentRoot(container);
}
}
现在您可以使用命令行和配置文件 ( src\main\resources\application-myprofile.yml
) 自定义您的应用程序:
> java -jar demo-0.0.1-SNAPSHOT.jar --static-assets-folder="myfolder"
> java -jar demo-0.0.1-SNAPSHOT.jar --spring.profiles.active=myprofile