AvatarInitiator.java

package com.mossle.user.component;

import java.io.File;
import java.io.FileOutputStream;

import javax.annotation.PostConstruct;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import org.springframework.beans.factory.annotation.Value;

import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

import org.springframework.core.io.Resource;

import org.springframework.stereotype.Component;

import org.springframework.util.FileCopyUtils;

@Component
public class AvatarInitiator implements ApplicationContextAware {
    private static Logger logger = LoggerFactory
            .getLogger(AvatarInitiator.class);
    private String baseDir;
    private ApplicationContext applicationContext;

    @PostConstruct
    public void init() throws Exception {
        File dir = new File(baseDir + "/1/avatar");

        if (dir.exists()) {
            return;
        }

        dir.mkdirs();

        Resource[] resources = applicationContext
                .getResources("classpath:/avatar/*");

        if (resources == null) {
            logger.info("cannot find default avatar for user.");

            return;
        }

        for (Resource resource : resources) {
            File file = new File(dir, resource.getFilename());
            FileOutputStream fos = new FileOutputStream(file);

            try {
                FileCopyUtils.copy(resource.getInputStream(), fos);
                fos.flush();
            } finally {
                fos.close();
            }
        }
    }

    @Value("${store.baseDir}")
    public void setBaseDir(String baseDir) {
        this.baseDir = baseDir;
    }

    public void setApplicationContext(ApplicationContext applicationContext) {
        this.applicationContext = applicationContext;
    }
}