package cn.stylefeng.guns.workflow.core.util;
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import org.apache.commons.io.FileUtils;
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import org.springframework.web.multipart.MultipartFile;
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import java.io.*;
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import java.net.MalformedURLException;
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import java.net.URL;
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/**
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* 上传文件
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*
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* @author fengshuonan
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* @Date 2019/8/7 23:14
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*/
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public class FileUpload {
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/**
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* 上传文件
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*
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* @param file //文件对象
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* @param filePath //上传路径
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* @param fileName //文件名
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* @return 文件名
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*/
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public static String fileUp(MultipartFile file, String filePath, String fileName) {
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String extName = ""; // 扩展名格式：
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try {
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if (file.getOriginalFilename().lastIndexOf(".") >= 0) {
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extName = file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf("."));
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}
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copyFile(file.getInputStream(), filePath, fileName + extName).replaceAll("-", "");
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} catch (IOException e) {
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System.out.println(e);
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}
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return fileName + extName;
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}
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/**
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* 写文件到当前目录的upload目录中
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*
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* @param in
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* @param fileName
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* @throws IOException
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*/
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public static String copyFile(InputStream in, String dir, String realName)
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throws IOException {
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File file = mkdirsmy(dir, realName);
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FileUtils.copyInputStreamToFile(in, file);
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in.close();
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return realName;
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}
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/**
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* 判断路径是否存在，否：创建此路径
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*
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* @param dir 文件路径
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* @param realName 文件名
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* @throws IOException
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*/
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public static File mkdirsmy(String dir, String realName) throws IOException {
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File file = new File(dir, realName);
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if (!file.exists()) {
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if (!file.getParentFile().exists()) {
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file.getParentFile().mkdirs();
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}
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file.createNewFile();
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}
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return file;
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}
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/**
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* 下载网络图片上传到服务器上
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*
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* @param httpUrl 图片网络地址
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* @param filePath 图片保存路径
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* @param myFileName 图片文件名(null时用网络图片原名)
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* @return 返回图片名称
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*/
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public static String getHtmlPicture(String httpUrl, String filePath, String myFileName) {
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URL url; //定义URL对象url
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BufferedInputStream in; //定义输入字节缓冲流对象in
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FileOutputStream file; //定义文件输出流对象file
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try {
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String fileName = null == myFileName ? httpUrl.substring(httpUrl.lastIndexOf("/")).replace("/", "") : myFileName; //图片文件名(null时用网络图片原名)
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url = new URL(httpUrl); //初始化url对象
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in = new BufferedInputStream(url.openStream()); //初始化in对象，也就是获得url字节流
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//file = new FileOutputStream(new File(filePath +"\\"+ fileName));
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file = new FileOutputStream(mkdirsmy(filePath, fileName));
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int t;
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while ((t = in.read()) != -1) {
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file.write(t);
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}
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file.close();
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in.close();
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return fileName;
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} catch (MalformedURLException e) {
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e.printStackTrace();
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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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return null;
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}
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}
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