Image upload with Primefaces on Tomcat server, only the image path being saved in the database

Question

Fala galera.

I’m a beginner in Java and am doing a small Dynamic Web project using Primefaces, JSP, Hibernate and Tomcat. Basically it is several forms of registration and one of them is the registration of users. The Domain, Bean, DAO part and the pages to list, register, edit and delete are already working, but the user table has a field for photo(image), and that’s where my problem is. I want to save only the Photo(image) path in the database, and in the user page I want to let them add your photo, of course. I read a lot of things on Google about how to do using the component p:fileUpload, And I confess I succeeded, in part. The problem is, I want the images to be saved in the right way, for example in a folder /images in my project.

The way I’m doing it now is like this: No Bean

public void upload(FileUploadEvent event) {

    try {
        String realPath = FacesContext.getCurrentInstance()
                .getExternalContext().getRealPath("/");

        // Aqui cria o diretorio caso não exista
        File file = new File(realPath + "/imagens/");
        file.mkdirs();

        byte[] arquivo = event.getFile().getContents();
        String caminho = realPath + "/imagens/"
                + event.getFile().getFileName();

        // esse trecho grava o arquivo no diretório
        FileOutputStream fos = new FileOutputStream(caminho);
        fos.write(arquivo);
        fos.close();

        pathImage = caminho;
        System.out.println("caminho da imagem salva é  = " + caminho);

    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

}`

In the file . xhtml

                    <p:fileUpload fileUploadListener="#{checksPicosBean.upload}" fileLimit="1"
                    fileLimitMessage="Excedido Limite de arquivos"
                    cancelLabel="Cancelar" label="Arquivo" uploadLabel="Anexar"
                    invalidFileMessage="Somente arquivos .jpg, .png ou .gif"
                    allowTypes="/(\.|\/)(gif|jpe?g|png)$/" value="#{checksPicosBean.imagem}"
                    mode="advanced" skinSimple="true" />

The problem is that it is saving in a folder on my disk c: and not in a supposed server folder. What would be the right way to make this happen? Is there any configuration in Tomcat that has to be done? I intend to make these forms available on the web, so I’d like to know what the right way is to make it work.

Answer 1

Thiago, I have a similar application and I do so:

public void upload(FileUploadEvent event)
{
    UploadedFile uf = event.getFile();
    Tools t = new Tools();
    String nomeArq = t.agora()+"-"+t.trataAcentoString(uf.getFileName());
    this.avaliacao.setAnexo_resp(nomeArq);        
    String path = "";
    // aqui verifico se é linux ou windows
    if(System.getProperties().get("os.name").toString().trim().equalsIgnoreCase("Linux"))
    {
        path = "/home/workspace/gca/WebContent/resources/files/";
    }
    else
    {
        path = "c://files//avaliacao//";
    }

    File f = new File(path + nomeArq);
    OutputStream os = null;
    InputStream is = null;
    try
    {
        is = uf.getInputstream();
        byte[] b = new byte[is.available()];
        os = new FileOutputStream(f);
        while(is.read(b) > 0)
        {  
            os.write(b);  
        }
        // aqui você pode colcar a gravação do path no BD

        Tools.msgAlert("Alerta", "O arquivo foi enviado corretamente, clique em enviar para concluir a operação.");
    } 
    catch(IOException ex) 
    {  
        Tools.msgErro("Erro", ex.getMessage());  
    } 
    finally 
    {  
        try 
        {  
            os.flush();  
            os.close();  
            is.close();  
        } 
        catch(IOException ex) 
        {  
            Tools.msgErro("Erro", ex.getMessage());
        }  
    }
}

Note the comments in the code, because I check before if I am on my machine (development) or on the server (production) and only then write the file passing the complete path to save in the bank.

gca is the name of the application, I can write either inside the project or where I want to pass the full path.