Java IOUtils.closeQuietly方法代码示例

import org.apache.tomcat.util.http.fileupload.IOUtils; //导入方法依赖的package包/类
/**
 * Generates ARCLib XML from the SIP package using SIP profile.
 *
 * @param sipPath path to the SIP package
 * @param sipProfileId id of the SIP profile
 * @param response response with the ARCLib XML
 *
 * @throws ParserConfigurationException
 * @throws IOException
 * @throws SAXException
 * @throws XPathExpressionException
 * @throws TransformerException
 */
@RequestMapping(value = "/generate", method = RequestMethod.PUT)
public void generateArclibXml(
        @RequestParam("sipPath") String sipPath, @RequestParam("sipProfileId") String sipProfileId, HttpServletResponse response)
        throws ParserConfigurationException, IOException, SAXException, XPathExpressionException, TransformerException {

    String xml = generator.generateArclibXml(sipPath, sipProfileId);
    response.setContentType("application/xml");
    response.setStatus(200);
    response.addHeader("Content-Disposition", "attachment; sipPath=" + sipPath + "_sipProfileId_" + sipProfileId);

    ByteArrayInputStream xmlInputStream = new ByteArrayInputStream(xml.getBytes(StandardCharsets.UTF_8.name()));

    IOUtils.copyLarge(xmlInputStream, response.getOutputStream());
    IOUtils.closeQuietly(xmlInputStream);
}
 

import org.apache.tomcat.util.http.fileupload.IOUtils; //导入方法依赖的package包/类
private void handlerAjax(HttpServletResponse response, Exception ex) {
    // 设置错误的响应状态码
    response.setStatus(org.apache.http.HttpStatus.SC_INTERNAL_SERVER_ERROR);
    PrintWriter writer = null;
    if (ex instanceof GenericException) {
        try {
            writer = response.getWriter();
            CustomResp customResp = CustomResp.withEx((GenericException) ex);
            writer.write(JSON.toJSONString(customResp));
            writer.flush();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            IOUtils.closeQuietly(writer);
        }
    }
}
 

import org.apache.tomcat.util.http.fileupload.IOUtils; //导入方法依赖的package包/类
public static Properties load(String srcpath){
	Properties config = new Properties();
	try {
		config = loadProperties(srcpath);
	} catch (Exception e) {
		InputStream in = null;
		try {
			in = TomcatConfig.class.getResourceAsStream(srcpath);
			if(in==null)
				throw new RuntimeException("can load resource as stream with : " +srcpath );
			config.load(in);
		} catch (Exception e1) {
			throw new RuntimeException("load config error: " + srcpath, e);
		} finally{
			IOUtils.closeQuietly(in);
		}
	}
	return config;
}
 

import org.apache.tomcat.util.http.fileupload.IOUtils; //导入方法依赖的package包/类
/**
 * Copies the contents of the given {@link InputStream}
 * to the given {@link OutputStream}.
 *
 * @param inputStream The input stream, which is being read.
 *   It is guaranteed, that {@link InputStream#close()} is called
 *   on the stream.
 * @param outputStream The output stream, to which data should
 *   be written. May be null, in which case the input streams
 *   contents are simply discarded.
 * @param closeOutputStream True guarantees, that {@link OutputStream#close()}
 *   is called on the stream. False indicates, that only
 *   {@link OutputStream#flush()} should be called finally.
 * @param buffer Temporary buffer, which is to be used for
 *   copying data.
 * @return Number of bytes, which have been copied.
 * @throws IOException An I/O error occurred.
 */
public static long copy(InputStream inputStream,
        OutputStream outputStream, boolean closeOutputStream,
        byte[] buffer)
throws IOException {
    OutputStream out = outputStream;
    InputStream in = inputStream;
    try {
        long total = 0;
        for (;;) {
            int res = in.read(buffer);
            if (res == -1) {
                break;
            }
            if (res > 0) {
                total += res;
                if (out != null) {
                    out.write(buffer, 0, res);
                }
            }
        }
        if (out != null) {
            if (closeOutputStream) {
                out.close();
            } else {
                out.flush();
            }
            out = null;
        }
        in.close();
        in = null;
        return total;
    } finally {
        IOUtils.closeQuietly(in);
        if (closeOutputStream) {
            IOUtils.closeQuietly(out);
        }
    }
}
 

import org.apache.tomcat.util.http.fileupload.IOUtils; //导入方法依赖的package包/类
/**
 * Copies the contents of the given {@link InputStream} to the given
 * {@link OutputStream}.
 *
 * @param inputStream
 *            The input stream, which is being read. It is guaranteed, that
 *            {@link InputStream#close()} is called on the stream.
 * @param outputStream
 *            The output stream, to which data should be written. May be
 *            null, in which case the input streams contents are simply
 *            discarded.
 * @param closeOutputStream
 *            True guarantees, that {@link OutputStream#close()} is called
 *            on the stream. False indicates, that only
 *            {@link OutputStream#flush()} should be called finally.
 * @param buffer
 *            Temporary buffer, which is to be used for copying data.
 * @return Number of bytes, which have been copied.
 * @throws IOException
 *             An I/O error occurred.
 */
public static long copy(InputStream inputStream, OutputStream outputStream, boolean closeOutputStream,
		byte[] buffer) throws IOException {
	OutputStream out = outputStream;
	InputStream in = inputStream;
	try {
		long total = 0;
		for (;;) {
			int res = in.read(buffer);
			if (res == -1) {
				break;
			}
			if (res > 0) {
				total += res;
				if (out != null) {
					out.write(buffer, 0, res);
				}
			}
		}
		if (out != null) {
			if (closeOutputStream) {
				out.close();
			} else {
				out.flush();
			}
			out = null;
		}
		in.close();
		in = null;
		return total;
	} finally {
		IOUtils.closeQuietly(in);
		if (closeOutputStream) {
			IOUtils.closeQuietly(out);
		}
	}
}
 

import org.apache.tomcat.util.http.fileupload.IOUtils; //导入方法依赖的package包/类
private FileResource getFileResource(String path,String type){
    InputStream inputStream = null;
    try {
        ClassPathResource resource = new ClassPathResource(path);
        inputStream = resource.getInputStream();
        File tempFile = File.createTempFile("ds_" + System.currentTimeMillis(), type);
        FileUtils.copyInputStreamToFile(inputStream, tempFile);
        return new FileResource(tempFile);
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    } finally {
        IOUtils.closeQuietly(inputStream);
    }
}
 

import org.apache.tomcat.util.http.fileupload.IOUtils; //导入方法依赖的package包/类
/**************************************************************************/
@Override
protected void service(HttpServletRequest req, HttpServletResponse rsp)
        throws ServletException, IOException
{
    InputStream is = this.getClass().getResourceAsStream("examplerdf.rdf");
    IOUtils.copy(is, rsp.getOutputStream());
    IOUtils.closeQuietly(is);
}
 

import org.apache.tomcat.util.http.fileupload.IOUtils; //导入方法依赖的package包/类
@RequestMapping(value = "/api/sql/exportByGroupId", method = RequestMethod.GET, produces = "application/zip")
public byte[] exportZipByGroupId(
        @RequestParam long groupid,
        @RequestParam String filename,
        HttpServletResponse response) throws Exception {
    //setting headers
    response.setContentType("application/zip");
    response.setStatus(HttpServletResponse.SC_OK);
    response.addHeader("Content-Disposition", "attachment; filename=\"" + filename + ".zip\"");

    //creating byteArray stream, make it bufforable and passing this buffor to ZipOutputStream
    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
    BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(byteArrayOutputStream);
    ZipOutputStream zipOutputStream = new ZipOutputStream(bufferedOutputStream);

    //simple file list, just for tests
    List<File> files = prepareSqlFileByGroupId(groupid);

    //packing files
    for (File file : files) {
        //new zip entry and copying inputstream with file to zipOutputStream, after all closing streams
        zipOutputStream.putNextEntry(new ZipEntry(file.getName()));
        FileInputStream fileInputStream = new FileInputStream(file);

        IOUtils.copy(fileInputStream, zipOutputStream);

        fileInputStream.close();
        zipOutputStream.closeEntry();
    }
    if (zipOutputStream != null) {
        zipOutputStream.finish();
        zipOutputStream.flush();
        IOUtils.closeQuietly(zipOutputStream);
    }
    IOUtils.closeQuietly(bufferedOutputStream);
    IOUtils.closeQuietly(byteArrayOutputStream);

    housekeepCreateFile();

    return byteArrayOutputStream.toByteArray();
}
 

import org.apache.tomcat.util.http.fileupload.IOUtils; //导入方法依赖的package包/类
@RequestMapping(value = "/api/sql/exportByTargetVersion", method = RequestMethod.GET, produces = "application/zip")
public byte[] exportZipByTargetVersion(
        @RequestParam String targetVision,
        @RequestParam String filename,
        HttpServletResponse response) throws Exception {
    //setting headers
    response.setContentType("application/zip");
    response.setStatus(HttpServletResponse.SC_OK);
    response.addHeader("Content-Disposition", "attachment; filename=\"" + filename + ".zip\"");

    //creating byteArray stream, make it bufforable and passing this buffor to ZipOutputStream
    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
    BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(byteArrayOutputStream);
    ZipOutputStream zipOutputStream = new ZipOutputStream(bufferedOutputStream);
    List<SqlCIGroup> sqlCIGroupList = sqlCIGroupRepository.findByTargetVersion(targetVision);
    //simple file list, just for tests
    ArrayList<File> files = new ArrayList<File>();
    Iterator itrSqlCIGroup = sqlCIGroupList.iterator();
    while (itrSqlCIGroup.hasNext()) {
        SqlCIGroup sqlCIGroup = (SqlCIGroup) itrSqlCIGroup.next();
        files.addAll(prepareSqlFileByGroupId(sqlCIGroup.getId()));
    }

    //packing files
    for (File file : files) {
        //new zip entry and copying inputstream with file to zipOutputStream, after all closing streams
        zipOutputStream.putNextEntry(new ZipEntry(file.getName()));
        FileInputStream fileInputStream = new FileInputStream(file);

        IOUtils.copy(fileInputStream, zipOutputStream);

        fileInputStream.close();
        zipOutputStream.closeEntry();
    }
    if (zipOutputStream != null) {
        zipOutputStream.finish();
        zipOutputStream.flush();
        IOUtils.closeQuietly(zipOutputStream);
    }
    IOUtils.closeQuietly(bufferedOutputStream);
    IOUtils.closeQuietly(byteArrayOutputStream);

    housekeepCreateFile();

    return byteArrayOutputStream.toByteArray();
}