Example usage for javax.swing ProgressMonitorInputStream read

Introduction

In this page you can find the example usage for javax.swing ProgressMonitorInputStream read.

Prototype

public int read() throws IOException 

Source Link

Document

Overrides FilterInputStream.read to update the progress monitor after the read.

Usage

From source file:br.org.acessobrasil.silvinha.util.versoes.AtualizadorDeVersoes.java

public boolean baixarVersao() {
    HttpClient client = new HttpClient();
    PostMethod method = new PostMethod(url);
    NameValuePair param = new NameValuePair("param", "update");
    method.setRequestBody(new NameValuePair[] { param });
    method.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,
            new DefaultHttpMethodRetryHandler(3, false));
    JFrame down = new JFrame("Download");
    File downFile = null;//from w ww . ja va2  s .co m
    InputStream is = null;
    FileOutputStream fos = null;
    try {
        int statusCode = client.executeMethod(method);
        if (statusCode != HttpStatus.SC_OK) {
            log.error("Method failed: " + method.getStatusLine());
        }
        Header header = method.getResponseHeader("Content-Disposition");
        String fileName = "silvinha.exe";
        if (header != null) {
            fileName = header.getValue().split("=")[1];
        }
        // Read the response body.
        is = method.getResponseBodyAsStream();
        down.pack();
        ProgressMonitorInputStream pmis = new ProgressMonitorInputStream(down,
                TradAtualizadorDeVersoes.FAZ_DOWNLOAD_FILE + fileName, is);
        pmis.getProgressMonitor().setMinimum(0);
        pmis.getProgressMonitor().setMaximum((int) method.getResponseContentLength());
        downFile = new File(fileName);
        fos = new FileOutputStream(downFile);
        int c;
        while (((c = pmis.read()) != -1) && (!pmis.getProgressMonitor().isCanceled())) {
            fos.write(c);
        }
        fos.flush();
        fos.close();
        String msgOK = TradAtualizadorDeVersoes.DOWNLOAD_EXITO
                + TradAtualizadorDeVersoes.DESEJA_ATUALIZAR_EXECUTAR + TradAtualizadorDeVersoes.ARQUIVO_DE_NOME
                + fileName + TradAtualizadorDeVersoes.LOCALIZADO_NA + TradAtualizadorDeVersoes.PASTA_INSTALACAO
                + TradAtualizadorDeVersoes.APLICACAO_DEVE_SER_ENCERRADA
                + TradAtualizadorDeVersoes.DESEJA_CONTINUAR_ATUALIZACAO;
        if (JOptionPane.showConfirmDialog(null, msgOK, TradAtualizadorDeVersoes.ATUALIZACAO_DO_PROGRAMA,
                JOptionPane.YES_NO_OPTION) == 0) {
            return true;
        } else {
            return false;
        }
    } catch (HttpException he) {
        log.error("Fatal protocol violation: " + he.getMessage(), he);
        return false;
    } catch (InterruptedIOException iioe) {
        method.abort();
        String msg = GERAL.OP_CANCELADA_USUARIO + TradAtualizadorDeVersoes.DIRECIONADO_A_APLICACAO;
        JOptionPane.showMessageDialog(down, msg);
        try {
            if (fos != null) {
                fos.close();
            }
        } catch (IOException ioe) {
            method.releaseConnection();
            System.exit(0);
        }
        if (downFile != null && downFile.exists()) {
            downFile.delete();
        }
        return false;
        //         System.err.println("Fatal transport error: " + iioe.getMessage());
        //         iioe.printStackTrace();
    } catch (IOException ioe) {
        log.error("Fatal transport error: " + ioe.getMessage(), ioe);
        return false;
    } finally {
        //Release the connection.
        method.releaseConnection();
    }
}

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