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file-online-preview
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采用apache-common-io包简化所有的文件下载io操作

This commit is contained in:
kl 2020-12-28 18:21:35 +08:00 committed by kl
parent e927760c40
commit c66dda239f
8 changed files with 105 additions and 126 deletions
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4
server/src/main/java/cn/keking/config/SchedulerCleanConfig.java
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@ -1,7 +1,7 @@
package cn.keking.config;
import cn.keking.service.cache.CacheService;
import cn.keking.utils.FileUtils;
import cn.keking.utils.KkFileUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.autoconfigure.condition.ConditionalOnExpression;
@ -31,7 +31,7 @@ public class SchedulerCleanConfig {
public void clean() {
logger.info("Cache clean start");
cacheService.cleanCache();
FileUtils.deleteDirectory(fileDir);
KkFileUtils.deleteDirectory(fileDir);
logger.info("Cache clean end");
}
}

10
server/src/main/java/cn/keking/service/CompressFileReader.java
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@ -2,7 +2,7 @@ package cn.keking.service;
import cn.keking.config.ConfigConstants;
import cn.keking.model.FileType;
import cn.keking.utils.FileUtils;
import cn.keking.utils.KkFileUtils;
import cn.keking.web.filter.BaseUrlFilter;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
@ -48,7 +48,7 @@ public class CompressFileReader {
String baseUrl = BaseUrlFilter.getBaseUrl();
String archiveFileName = fileHandlerService.getFileNameFromPath(filePath);
try {
ZipFile zipFile = new ZipFile(filePath, FileUtils.getFileEncode(filePath));
ZipFile zipFile = new ZipFile(filePath, KkFileUtils.getFileEncode(filePath));
Enumeration<ZipArchiveEntry> entries = zipFile.getEntries();
// 排序
entries = sortZipEntries(entries);
@ -382,7 +382,7 @@ public class CompressFileReader {
} catch (IOException e) {
e.printStackTrace();
}
FileUtils.deleteFileByPath(filePath);
KkFileUtils.deleteFileByPath(filePath);
}
private void extractZipFile(String childName, InputStream zipFile) {
@ -439,7 +439,7 @@ public class CompressFileReader {
} catch (IOException e) {
e.printStackTrace();
}
FileUtils.deleteFileByPath(filePath);
KkFileUtils.deleteFileByPath(filePath);
}
}
@ -468,7 +468,7 @@ public class CompressFileReader {
} catch (IOException e) {
e.printStackTrace();
}
FileUtils.deleteFileByPath(filePath);
KkFileUtils.deleteFileByPath(filePath);
}
private void extractRarFile(String childName, FileHeader header, Archive archive) {

4
server/src/main/java/cn/keking/service/FileHandlerService.java
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@ -4,7 +4,7 @@ import cn.keking.config.ConfigConstants;
import cn.keking.model.FileAttribute;
import cn.keking.model.FileType;
import cn.keking.service.cache.CacheService;
import cn.keking.utils.FileUtils;
import cn.keking.utils.KkFileUtils;
import cn.keking.utils.WebUtils;
import com.aspose.cad.Color;
import com.aspose.cad.fileformats.cad.CadDrawTypeMode;
@ -263,7 +263,7 @@ public class FileHandlerService {
if (StringUtils.hasText(fullFileName)) {
fileName = fullFileName;
type = FileType.typeFromFileName(fullFileName);
suffix = FileUtils.suffixFromFileName(fullFileName);
suffix = KkFileUtils.suffixFromFileName(fullFileName);
} else {
fileName = WebUtils.getFileNameFromURL(url);
type = FileType.typeFromUrl(url);

7
server/src/main/java/cn/keking/service/impl/SimTextFilePreviewImpl.java
View File

@ -4,6 +4,7 @@ import cn.keking.model.FileAttribute;
import cn.keking.model.ReturnResponse;
import cn.keking.service.FilePreview;
import cn.keking.utils.DownloadUtils;
import cn.keking.utils.KkFileUtils;
import org.apache.commons.io.FileUtils;
import org.springframework.stereotype.Service;
import org.springframework.ui.Model;
@ -11,7 +12,6 @@ import org.springframework.util.Base64Utils;
import java.io.File;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
/**
* Created by kl on 2018/1/17.
@ -35,8 +35,9 @@ public class SimTextFilePreviewImpl implements FilePreview {
}
try {
File originFile = new File(response.getContent());
String xmlString = FileUtils.readFileToString(originFile, StandardCharsets.UTF_8);
model.addAttribute("textData", Base64Utils.encodeToString(xmlString.getBytes(StandardCharsets.UTF_8)));
String charset = KkFileUtils.getFileEncode(originFile);
String xmlString = FileUtils.readFileToString(originFile, charset);
model.addAttribute("textData", Base64Utils.encodeToString(xmlString.getBytes(charset)));
} catch (IOException e) {
return otherFilePreview.notSupportedFile(model, fileAttribute, e.getLocalizedMessage());
}

125
server/src/main/java/cn/keking/utils/DownloadUtils.java
View File

@ -2,17 +2,19 @@ package cn.keking.utils;
import cn.keking.config.ConfigConstants;
import cn.keking.model.FileAttribute;
import cn.keking.model.FileType;
import cn.keking.model.ReturnResponse;
import io.mola.galimatias.GalimatiasParseException;
import org.apache.commons.io.FileUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.*;
import java.net.*;
import java.nio.charset.StandardCharsets;
import java.util.UUID;
import static cn.keking.utils.KkFileUtils.isFtpUrl;
import static cn.keking.utils.KkFileUtils.isHttpUrl;
/**
* @author yudian-it
*/
@ -31,42 +33,26 @@ public class DownloadUtils {
*/
public static ReturnResponse<String> downLoad(FileAttribute fileAttribute, String fileName) {
String urlStr = fileAttribute.getUrl();
String type = fileAttribute.getSuffix();
ReturnResponse<String> response = new ReturnResponse<>(0, "下载成功!!!", "");
UUID uuid = UUID.randomUUID();
if (null == fileName) {
fileName = uuid + "." + type;
} else { // 文件后缀不一致时，以type为准(针对simText【将类txt文件转为txt】)
fileName = fileName.replace(fileName.substring(fileName.lastIndexOf(".") + 1), type);
}
String realPath = fileDir + fileName;
File dirFile = new File(fileDir);
if (!dirFile.exists() && !dirFile.mkdirs()) {
logger.error("创建目录【{}】失败,可能是权限不够，请检查", fileDir);
}
String realPath = DownloadUtils.getRelFilePath(fileName, fileAttribute);
try {
URL url = new URL(urlStr);
if (url.getProtocol() != null && (url.getProtocol().toLowerCase().startsWith("file") || url.getProtocol().toLowerCase().startsWith("http"))) {
byte[] bytes = getBytesFromUrl(urlStr);
OutputStream os = new FileOutputStream(realPath);
saveBytesToOutStream(bytes, os);
} else if (url.getProtocol() != null && "ftp".equalsIgnoreCase(url.getProtocol())) {
URL url = WebUtils.normalizedURL(urlStr);
if (isHttpUrl(url)) {
File realFile = new File(realPath);
FileUtils.copyURLToFile(url, realFile);
} else if (isFtpUrl(url)) {
String ftpUsername = WebUtils.getUrlParameterReg(fileAttribute.getUrl(), URL_PARAM_FTP_USERNAME);
String ftpPassword = WebUtils.getUrlParameterReg(fileAttribute.getUrl(), URL_PARAM_FTP_PASSWORD);
String ftpControlEncoding = WebUtils.getUrlParameterReg(fileAttribute.getUrl(), URL_PARAM_FTP_CONTROL_ENCODING);
FtpUtils.download(fileAttribute.getUrl(), realPath, ftpUsername, ftpPassword, ftpControlEncoding);
} else {
response.setCode(1);
response.setContent(null);
response.setMsg("url不能识别url" + urlStr);
}
response.setContent(realPath);
response.setMsg(fileName);
if (FileType.simText.equals(fileAttribute.getType())) {
convertTextPlainFileCharsetToUtf8(realPath);
}
return response;
} catch (IOException e) {
} catch (IOException | GalimatiasParseException e) {
logger.error("文件下载失败，url：{}", urlStr, e);
response.setCode(1);
response.setContent(null);
@ -79,82 +65,27 @@ public class DownloadUtils {
}
}
public static byte[] getBytesFromUrl(String urlStr) throws IOException {
InputStream is = getInputStreamFromUrl(urlStr);
if (is == null) {
is = getInputStreamFromUrl(urlStr);
if (is == null) {
logger.error("文件下载异常：url：{}", urlStr);
throw new IOException("文件下载异常：url：" + urlStr);
}
}
return getBytesFromStream(is);
}
public static void saveBytesToOutStream(byte[] b, OutputStream os) throws IOException {
os.write(b);
os.close();
}
private static InputStream getInputStreamFromUrl(String urlStr) {
try {
URL url = io.mola.galimatias.URL.parse(urlStr).toJavaURL();
URLConnection connection = url.openConnection();
if (connection instanceof HttpURLConnection) {
connection.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
}
return connection.getInputStream();
} catch (IOException | GalimatiasParseException e) {
logger.warn("连接url异常：url：{}", urlStr);
return null;
}
}
private static byte[] getBytesFromStream(InputStream is) throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len;
while ((len = is.read(buffer)) != -1) {
baos.write(buffer, 0, len);
}
byte[] b = baos.toByteArray();
is.close();
baos.close();
return b;
}
/**
* 转换文本文件编码为utf8
* 探测源文件编码,探测到编码切不为utf8则进行转码
* 获取真实文件绝对路径
*
* @param filePath 文件路径
* @param fileName 文件名
* @return 文件路径
*/
private static void convertTextPlainFileCharsetToUtf8(String filePath) throws IOException {
File sourceFile = new File(filePath);
if (sourceFile.exists() && sourceFile.isFile() && sourceFile.canRead()) {
String encoding = FileUtils.getFileEncode(filePath);
if (!FileUtils.DEFAULT_FILE_ENCODING.equals(encoding)) {
// 不为utf8,进行转码
File tmpUtf8File = new File(filePath + ".utf8");
Writer writer = new OutputStreamWriter(new FileOutputStream(tmpUtf8File), StandardCharsets.UTF_8);
Reader reader = new BufferedReader(new InputStreamReader(new FileInputStream(sourceFile), encoding));
char[] buf = new char[1024];
int read;
while ((read = reader.read(buf)) > 0) {
writer.write(buf, 0, read);
}
reader.close();
writer.close();
// 删除源文件
if (!sourceFile.delete()) {
logger.error("源文件【{}】删除失败,请检查文件目录权限！", filePath);
}
// 重命名
if (tmpUtf8File.renameTo(sourceFile)) {
logger.error("临时文件【{}】重命名失败，请检查文件路径权限！", tmpUtf8File.getPath());
}
}
private static String getRelFilePath(String fileName, FileAttribute fileAttribute) {
String type = fileAttribute.getSuffix();
if (null == fileName) {
UUID uuid = UUID.randomUUID();
fileName = uuid + "." + type;
} else { // 文件后缀不一致时，以type为准(针对simText【将类txt文件转为txt】)
fileName = fileName.replace(fileName.substring(fileName.lastIndexOf(".") + 1), type);
}
String realPath = fileDir + fileName;
File dirFile = new File(fileDir);
if (!dirFile.exists() && !dirFile.mkdirs()) {
logger.error("创建目录【{}】失败,可能是权限不够，请检查", fileDir);
}
return realPath;
}
}

53
server/src/main/java/cn/keking/utils/FileUtils.java → server/src/main/java/cn/keking/utils/KkFileUtils.java
View File

@ -6,19 +6,39 @@ import org.slf4j.LoggerFactory;
import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.util.Objects;
public class FileUtils {
public class KkFileUtils {
private static final Logger LOGGER = LoggerFactory.getLogger(FileUtils.class);
private static final Logger LOGGER = LoggerFactory.getLogger(KkFileUtils.class);
public static final String DEFAULT_FILE_ENCODING = "UTF-8";
/**
* 判断url是否是http资源
*
* @param url url
* @return 是否http
*/
public static boolean isHttpUrl(URL url) {
return url.getProtocol().toLowerCase().startsWith("file") || url.getProtocol().toLowerCase().startsWith("http");
}
/**
* 判断url是否是ftp资源
*
* @param url url
* @return 是否ftp
*/
public static boolean isFtpUrl(URL url) {
return "ftp".equalsIgnoreCase(url.getProtocol());
}
/**
* 删除单个文件
*
* @param fileName
* 要删除的文件的文件名
* @param fileName 要删除的文件的文件名
* @return 单个文件删除成功返回true，否则返回false
*/
public static boolean deleteFileByName(String fileName) {
@ -39,17 +59,26 @@ public class FileUtils {
}
/**
* 判断文件编码格式
* 检测文件编码格式
*
* @param filePath 绝对路径
* @return 编码格式
*/
public static String getFileEncode(String filePath) {
File file = new File(filePath);
return getFileEncode(new File(filePath));
}
/**
* 检测文件编码格式
*
* @param file 检测的文件
* @return 编码格式
*/
public static String getFileEncode(File file) {
CharsetPrinter cp = new CharsetPrinter();
try {
String encoding = cp.guessEncoding(file);
LOGGER.info("检测到文件【{}】编码: {}", filePath, encoding);
LOGGER.info("检测到文件【{}】编码: {}", file.getAbsolutePath(), encoding);
return encoding;
} catch (IOException e) {
LOGGER.warn("文件编码获取失败，采用默认的编码格式：UTF-8", e);
@ -59,6 +88,7 @@ public class FileUtils {
/**
* 通过文件名获取文件后缀
*
* @param fileName 文件名称
* @return 文件后缀
*/
@ -82,8 +112,7 @@ public class FileUtils {
/**
* 删除目录及目录下的文件
*
* @param dir
* 要删除的目录的文件路径
* @param dir 要删除的目录的文件路径
* @return 目录删除成功返回true，否则返回false
*/
public static boolean deleteDirectory(String dir) {
@ -103,13 +132,13 @@ public class FileUtils {
for (int i = 0; i < Objects.requireNonNull(files).length; i++) {
// 删除子文件
if (files[i].isFile()) {
flag = FileUtils.deleteFileByName(files[i].getAbsolutePath());
flag = KkFileUtils.deleteFileByName(files[i].getAbsolutePath());
if (!flag) {
break;
}
} else if (files[i].isDirectory()) {
} else if (files[i].isDirectory()) {
// 删除子目录
flag = FileUtils.deleteDirectory(files[i].getAbsolutePath());
flag = KkFileUtils.deleteDirectory(files[i].getAbsolutePath());
if (!flag) {
break;
}

16
server/src/main/java/cn/keking/utils/WebUtils.java
View File

@ -1,5 +1,9 @@
package cn.keking.utils;
import io.mola.galimatias.GalimatiasParseException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;
@ -8,6 +12,16 @@ import java.util.Map;
* create : 2020-12-27 1:30 上午
**/
public class WebUtils {
/**
* 获取标准的URL
* @param urlStr url
* @return 标准的URL
*/
public static URL normalizedURL(String urlStr) throws GalimatiasParseException, MalformedURLException {
return io.mola.galimatias.URL.parse(urlStr).toJavaURL();
}
/**
* 获取url中的参数
*
@ -81,6 +95,6 @@ public class WebUtils {
public static String suffixFromUrl(String url) {
String nonPramStr = url.substring(0, url.contains("?") ? url.indexOf("?") : url.length());
String fileName = nonPramStr.substring(nonPramStr.lastIndexOf("/") + 1);
return FileUtils.suffixFromFileName(fileName);
return KkFileUtils.suffixFromFileName(fileName);
}
}

12
server/src/main/java/cn/keking/web/controller/OnlinePreviewController.java
View File

@ -6,8 +6,10 @@ import cn.keking.service.FilePreviewFactory;
import cn.keking.service.cache.CacheService;
import cn.keking.service.impl.OtherFilePreviewImpl;
import cn.keking.utils.DownloadUtils;
import cn.keking.service.FileHandlerService;
import cn.keking.utils.WebUtils;
import io.mola.galimatias.GalimatiasParseException;
import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
@ -21,6 +23,7 @@ import org.springframework.web.bind.annotation.ResponseBody;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.net.URL;
import java.util.Arrays;
import java.util.List;
@ -99,9 +102,10 @@ public class OnlinePreviewController {
public void getCorsFile(String urlPath, HttpServletResponse response) {
logger.info("下载跨域pdf文件url：{}", urlPath);
try {
byte[] bytes = DownloadUtils.getBytesFromUrl(urlPath);
DownloadUtils.saveBytesToOutStream(bytes, response.getOutputStream());
} catch (IOException e) {
URL url = WebUtils.normalizedURL(urlPath);
byte[] bytes = IOUtils.toByteArray(url);
IOUtils.write(bytes, response.getOutputStream());
} catch (IOException | GalimatiasParseException e) {
logger.error("下载跨域pdf文件异常，url：{}", urlPath, e);
}
}