mirror of
https://github.com/kekingcn/kkFileView.git
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351 lines
11 KiB
Java
351 lines
11 KiB
Java
package cn.keking.utils;
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import cn.keking.config.ConfigConstants;
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import cn.keking.model.FileAttribute;
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import cn.keking.model.FileType;
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import cn.keking.service.cache.CacheService;
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import com.google.common.collect.Lists;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Component;
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import org.springframework.util.StringUtils;
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import java.io.*;
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import java.nio.charset.Charset;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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/**
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*
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* @author yudian-it
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* @date 2017/11/13
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*/
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@Component
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public class FileUtils {
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public static final String DEFAULT_CONVERTER_CHARSET = System.getProperty("sun.jnu.encoding");
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Logger log= LoggerFactory.getLogger(getClass());
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@Autowired
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private CacheService cacheService;
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String fileDir = ConfigConstants.getFileDir();
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/**
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* 已转换过的文件集合(redis缓存)
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* @return
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*/
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public Map<String, String> listConvertedFiles() {
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return cacheService.getPDFCache();
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}
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/**
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* 已转换过的文件，根据文件名获取
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* @return
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*/
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public String getConvertedFile(String key) {
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return cacheService.getPDFCache(key);
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}
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/**
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* 已将pdf转换成图片的图片本地路径
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* @param key pdf本地路径
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* @return
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*/
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public Integer getConvertedPdfImage(String key) {
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return cacheService.getPdfImageCache(key);
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}
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/**
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* 查看文件类型(防止参数中存在.点号或者其他特殊字符，所以先抽取文件名，然后再获取文件类型)
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*
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* @param url
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* @return
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*/
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public FileType typeFromUrl(String url) {
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String nonPramStr = url.substring(0, url.indexOf("?") != -1 ? url.indexOf("?") : url.length());
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String fileName = nonPramStr.substring(nonPramStr.lastIndexOf("/") + 1);
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return typeFromFileName(fileName);
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}
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private FileType typeFromFileName(String fileName) {
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String[] simText = ConfigConstants.getSimText();
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String[] media = ConfigConstants.getMedia();
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String fileType = fileName.substring(fileName.lastIndexOf(".") + 1);
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if (listPictureTypes().contains(fileType.toLowerCase())) {
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return FileType.picture;
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}
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if (listArchiveTypes().contains(fileType.toLowerCase())) {
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return FileType.compress;
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}
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if (listOfficeTypes().contains(fileType.toLowerCase())) {
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return FileType.office;
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}
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if (Arrays.asList(simText).contains(fileType.toLowerCase())) {
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return FileType.simText;
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}
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if (Arrays.asList(media).contains(fileType.toLowerCase())) {
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return FileType.media;
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}
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if ("pdf".equalsIgnoreCase(fileType)) {
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return FileType.pdf;
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}
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if ("dwg".equalsIgnoreCase(fileType)) {
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return FileType.cad;
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}
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return FileType.other;
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}
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/**
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* 从url中剥离出文件名
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* @param url
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* 格式如：http://keking.ufile.ucloud.com.cn/20171113164107_月度绩效表模板(新).xls?UCloudPublicKey=ucloudtangshd@weifenf.com14355492830001993909323&Expires=&Signature=I D1NOFtAJSPT16E6imv6JWuq0k=
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* @return
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*/
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public String getFileNameFromURL(String url) {
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// 因为url的参数中可能会存在/的情况，所以直接url.lastIndexOf("/")会有问题
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// 所以先从？处将url截断，然后运用url.lastIndexOf("/")获取文件名
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String noQueryUrl = url.substring(0, url.indexOf("?") != -1 ? url.indexOf("?"): url.length());
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String fileName = noQueryUrl.substring(noQueryUrl.lastIndexOf("/") + 1);
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return fileName;
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}
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/**
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* 获取文件后缀
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* @param fileName
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* @return
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*/
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public String getSuffixFromFileName(String fileName) {
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String suffix = fileName.substring(fileName.lastIndexOf("."));
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return suffix;
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}
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/**
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* 从路径中获取
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* @param path
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* 类似这种：C:\Users\yudian-it\Downloads
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* @return
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*/
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public String getFileNameFromPath(String path) {
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return path.substring(path.lastIndexOf(File.separator) + 1);
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}
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public List<String> listPictureTypes(){
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List<String> list = Lists.newArrayList();
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list.add("jpg");
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list.add("jpeg");
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list.add("png");
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list.add("gif");
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list.add("bmp");
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list.add("ico");
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list.add("RAW");
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return list;
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}
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public List<String> listArchiveTypes(){
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List<String> list = Lists.newArrayList();
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list.add("rar");
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list.add("zip");
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list.add("jar");
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list.add("7-zip");
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list.add("tar");
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list.add("gzip");
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list.add("7z");
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return list;
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}
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public List<String> listOfficeTypes() {
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List<String> list = Lists.newArrayList();
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list.add("docx");
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list.add("doc");
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list.add("xls");
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list.add("xlsx");
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list.add("ppt");
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list.add("pptx");
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return list;
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}
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/**
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* 获取相对路径
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* @param absolutePath
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* @return
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*/
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public String getRelativePath(String absolutePath) {
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return absolutePath.substring(fileDir.length());
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}
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public void addConvertedFile(String fileName, String value){
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cacheService.putPDFCache(fileName, value);
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}
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/**
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*
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* @param pdfFilePath
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* @param num
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*/
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public void addConvertedPdfImage(String pdfFilePath, int num){
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cacheService.putPdfImageCache(pdfFilePath, num);
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}
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/**
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* 获取redis中压缩包内图片文件
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* @param fileKey
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* @return
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*/
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public List getImgCache(String fileKey){
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return cacheService.getImgCache(fileKey);
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}
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/**
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* 设置redis中压缩包内图片文件
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* @param fileKey
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* @param imgs
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*/
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public void putImgCache(String fileKey,List imgs){
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cacheService.putImgCache(fileKey, imgs);
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}
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/**
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* 判断文件编码格式
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* @param path
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* @return
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*/
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public String getFileEncodeUTFGBK(String path){
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String enc = Charset.forName("GBK").name();
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File file = new File(path);
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InputStream in= null;
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try {
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in = new FileInputStream(file);
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byte[] b = new byte[3];
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in.read(b);
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in.close();
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if (b[0] == -17 && b[1] == -69 && b[2] == -65) {
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enc = Charset.forName("UTF-8").name();
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}
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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} catch (IOException e) {
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e.printStackTrace();
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}
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System.out.println("文件编码格式为:" + enc);
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return enc;
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}
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/**
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* 对转换后的文件进行操作(改变编码方式)
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* @param outFilePath
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*/
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public void doActionConvertedFile(String outFilePath) {
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StringBuffer sb = new StringBuffer();
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try (InputStream inputStream = new FileInputStream(outFilePath);
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BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, DEFAULT_CONVERTER_CHARSET))){
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String line;
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while(null != (line = reader.readLine())){
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if (line.contains("charset=gb2312")) {
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line = line.replace("charset=gb2312", "charset=utf-8");
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}
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sb.append(line);
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}
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// 添加sheet控制头
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sb.append("<script src=\"js/jquery-3.0.0.min.js\" type=\"text/javascript\"></script>");
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sb.append("<script src=\"js/excel.header.js\" type=\"text/javascript\"></script>");
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sb.append("<link rel=\"stylesheet\" href=\"bootstrap/css/bootstrap.min.css\">");
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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} catch (IOException e) {
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e.printStackTrace();
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}
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// 重新写入文件
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try(FileOutputStream fos = new FileOutputStream(outFilePath);
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BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(fos, "utf-8"))) {
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writer.write(sb.toString());
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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/**
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* 获取文件后缀
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* @param url
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* @return
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*/
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private String suffixFromUrl(String url) {
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String nonPramStr = url.substring(0, url.indexOf("?") != -1 ? url.indexOf("?") : url.length());
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String fileName = nonPramStr.substring(nonPramStr.lastIndexOf("/") + 1);
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return suffixFromFileName(fileName);
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}
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private String suffixFromFileName(String fileName) {
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String fileType = fileName.substring(fileName.lastIndexOf(".") + 1);
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return fileType;
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}
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/**
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* 获取url中的参数
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* @param url
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* @param name
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* @return
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*/
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public String getUrlParameterReg(String url, String name) {
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Map<String, String> mapRequest = new HashMap();
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String strUrlParam = truncateUrlPage(url);
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if (strUrlParam == null) {
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return "";
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}
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//每个键值为一组
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String[] arrSplit=strUrlParam.split("[&]");
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for(String strSplit:arrSplit) {
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String[] arrSplitEqual= strSplit.split("[=]");
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//解析出键值
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if(arrSplitEqual.length > 1) {
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//正确解析
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mapRequest.put(arrSplitEqual[0], arrSplitEqual[1]);
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} else if (!arrSplitEqual[0].equals("")) {
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//只有参数没有值，不加入
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mapRequest.put(arrSplitEqual[0], "");
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}
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}
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return mapRequest.get(name);
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}
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/**
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* 去掉url中的路径，留下请求参数部分
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* @param strURL url地址
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* @return url请求参数部分
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*/
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private String truncateUrlPage(String strURL) {
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String strAllParam = null;
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strURL = strURL.trim();
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String[] arrSplit = strURL.split("[?]");
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if(strURL.length() > 1) {
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if(arrSplit.length > 1) {
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if(arrSplit[1] != null) {
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strAllParam=arrSplit[1];
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}
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}
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}
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return strAllParam;
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}
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public FileAttribute getFileAttribute(String url) {
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String fileName;
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FileType type;
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String suffix;
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String fullFileName = getUrlParameterReg(url, "fullfilename");
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if (!StringUtils.isEmpty(fullFileName)) {
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fileName = fullFileName;
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type = typeFromFileName(fileName);
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suffix = suffixFromFileName(fileName);
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} else {
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fileName = getFileNameFromURL(url);
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type = typeFromUrl(url);
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suffix = suffixFromUrl(url);
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}
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return new FileAttribute(type,suffix,fileName,url,url);
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}
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}
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