图片上传--Jersey实现RESTful接口

上次利用SpringMVC实现图片上传，这个是客户端将图片和其他字段一起上传然后一起处理的。（有什么坏处暂时也没有想到）总之这次的希望能够将图片存储的服务独立出来，暂时用Jersey实现一个接口（老大说按道理应该用WebService来实现，但我在这里没觉得两者有什么不同呀=。=），然后在SpringMVC中将图片提交到Jersey接口，完成存储。

这个是独立出来的图片存储项目结构

config.xml配置文件中只添加了一个绝对路径和一个虚拟路径

<config><root>D:\\recommend\\images\\</root><uriRoot>/static/image/recommendation/</uriRoot></config>

springcontext.xml配置文件中将需要注入的东西配好即可

<context:component-scan base-package="com.xxx.upload">

RestFulApplication.java中注册必要的类

    public RestFulApplication(){        register(RequestContextFilter.class);        // Add additional features such as support for Multipart.        register(MultiPartFeature.class);        //load  Resource        register(RecommendationPictureResource.class);    }

RecommendationPictureResource.java

private final Log logger = LogFactory.getLog(RecommendationPictureResource.class);@Autowired@Qualifier("pictureService")PictureService pictureService;//存储图片的服务类@Autowired@Qualifier("xmlUtils")XMLUtils xmlUtils;//封装org.apache.commons.configuration.XMLConfiguration的一个xml文件解析工具类，用来读取config.xml配置文件@POST@Path("/upload")@Produces("application/json;charset=UTF-8")@Consumes(MediaType.MULTIPART_FORM_DATA)public String loadPic(        @FormDataParam("type") String type,        @FormDataParam("resourceId") String resourceId,        @FormDataParam("file") InputStream fileInputStream,        @FormDataParam("file") FormDataContentDisposition contentDispositionHeader){    ObjectNode result = new ObjectMapper().createObjectNode();    if (type==null || resourceId == null || fileInputStream == null) {        result.put("ret_code", 10001);        result.put("ret_msg", "Illegal Parameters");        return result.toString();    }    String fileName = contentDispositionHeader.getFileName();    String path = type + File.separatorChar + resourceId + File.separatorChar + fileName;    //存储路径    String dstFilePath = xmlUtils.getString("root") + path;     pictureService.saveFile(fileInputStream, dstFilePath);    logger.info("success save pic file, dstFilePath = " + dstFilePath);    String uriPath = xmlUtils.getString("uriRoot") + path;     logger.info("uriPath = " + uriPath);    result.put("uriPath", uriPath);    return result.toString();}@POST@Path("/delete")@Produces("application/json;charset=UTF-8")public void deletePic(@FormParam("uriPath") String uriPath){    String uriRoot = xmlUtils.getString("uriRoot");     String path = uriPath.substring(uriRoot.length());    String dstFilePath = xmlUtils.getString("root") + path;    pictureService.deleteFile(dstFilePath);}

PictureService.java接口

    public void saveFile(InputStream fileInputStream, String dstFilePath);    public void deleteFile(String dstFilePath);

PictureServiceImpl.java实现类

private final Log logger = LogFactory.getLog(PictureServiceImpl.class);@Overridepublic void saveFile(InputStream fileInputStream, String dstFilePath) {    OutputStream outputStream = null;    try {        File file = new File(dstFilePath);        if(!file.exists()){            if(!file.getParentFile().exists()){                file.getParentFile().mkdirs();            }            outputStream = new FileOutputStream(new File(                    dstFilePath));            int read = 0;            byte[] bytes = new byte[1024];            outputStream = new FileOutputStream(new File(dstFilePath));            while ((read = fileInputStream.read(bytes)) != -1) {                outputStream.write(bytes, 0, read);            }        }else{            logger.info("the pic already exist.");        }    } catch (IOException e) {        logger.error(e);        e.printStackTrace();    }finally{        try {            fileInputStream.close();            outputStream.flush();            outputStream.close();        } catch (IOException e) {            logger.error("close stream defeat");            e.printStackTrace();        }    }}@Overridepublic void deleteFile(String dstFilePath) {    File file = new File(dstFilePath);    file.delete();    file.getParentFile().delete();}

删除这儿还有问题，就是利用上述Jersey接口上传好的图片一直被JVM占用，导致无法删除，但我现在仍然看不破哪儿的资源没有释放~~

对应的SpringMVC中通过调用上述Jersey接口的部分代码

    try {        String upload_host = "localhost:8080";        String pic_upload_uri = "http://" + upload_host + "/xxx/upload";        MultipartEntityBuilder entityBuilder = MultipartEntityBuilder.create();//org.apache.http.entity.mime.MultipartEntityBuilder        //type和contentId在上述接口中用来生成存储路径        entityBuilder.addTextBody("type", type);        entityBuilder.addTextBody("resourceId", contentId);        ContentType contentType = ContentType.parse(poster.getContentType());        String fileName = poster.getOriginalFilename();        entityBuilder.addBinaryBody("file", poster.getInputStream(), contentType, fileName);        HttpClient client = new HttpClient();//自己封装好的Http工具类        String loadResult  = client.post(pic_upload_uri, entityBuilder.build());//上传成功的话返回json格式字符串，其中包含一个uriPath        //利用Jackson解析返回结果        JsonNode node = new ObjectMapper().readTree(loadResult);        uriPath = node.get("uriPath").asText();        logger.info("load pic success! uriPath = " + uriPath);      } catch (Exception e) {        logger.error("load pic error ! reason:" + e.getMessage());    }

以上，实现图片上传服务，基本与业务无关，但调用的方式还是不太好，url路径不好配置，直接写在了代码中，还需要改。