ssh图片上传与音乐上传

Question

最近在看一个图片上传的功能，想模仿实现 音乐播放器的后台音乐上传，但是 upLoadPicture()这段代码看的不是很懂，能不能稍微详细点解释一下里面的每句话和实现思想，如果我要做音乐上传的功能思路也和这个一样吗？

@Controller("PictureAction")
@Scope("prototype")
public class PictureAction extends ActionSupport {

private static final long serialVersionUID = 572146812454L;
private File image; // 上传的文件
private String imageFileName; // 文件名称
private String imageContentType; // 文件类型
User user = (User) ActionContext.getContext().getSession().get("user");
private HttpServletResponse response = ServletActionContext.getResponse();
private HttpServletRequest request = ServletActionContext.getRequest();

private List<Picture> picList;

public List<Picture> getPicList() {
    return picList;
}

public void setPicList(List<Picture> picList) {
    this.picList = picList;
}

private String picId;

private String userId;

private String commentPic;

//省略getter和setter

public String uploadPicture() throws IOException {
    String s = UUID.randomUUID().toString();
    String lastName = imageFileName.substring(imageFileName
            .lastIndexOf(".") + 1, imageFileName.length());
    String name = s + "." + lastName;
    username = user.getUsername();
    //获取服务器路径
    String realpath = ServletActionContext.getServletContext().getRealPath(
            "/upload");
    System.out.println("realpath: " + realpath);
    if (image != null) {
        File savefile = new File(new File(realpath), name);
        if (!savefile.getParentFile().exists())
            savefile.getParentFile().mkdirs();
        FileUtils.copyFile(image, savefile);
        String imagePath = "/sDemo/upload/" + name;
        System.out.println("imagePath: " + imagePath);
        Picture picture = new Picture();
        picture.setUserId(user.getId());
        picture.setUserName(user.getUsername());
        picture.setPictureUrl(imagePath);
        ser.insertPicture(picture);
    }
    return "upload";
}

Answer 1

音乐上传思路是一样的；
上面的解释你跟着代码再看看,自己再动动手就差不多了。

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