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  • java 剪切复制文件

    package servlet.back;
    import java.io.*;

    import org.dom4j.Document;
    import org.dom4j.DocumentException;
    import org.dom4j.Element;
    import org.dom4j.io.SAXReader;

    import service.Tools;

    public class jqwj {
    public jqwj() {

    }

    public static void main(String args[]){
    // autoCut();
    // newFolder("D:/100");
    moveFile("D:/100/新建文本文档.txt","D:/FQ");
    }
    /*
    * 自动移动文件
    */
    public static void autoCut(){
    Document doc = null;
    Element root = null;
    String folderPath=Tools.getPath();
    try {
    folderPath = java.net.URLDecoder.decode(folderPath, "GBK");
    doc = new SAXReader().read(new File(folderPath,"connectionConfig.xml"));
    root = doc.getRootElement().element("QZSJGL");
    String cutFile = root.element("CUTFILE") == null ? "false" : root.element("CUTFILE").getTextTrim();
    String time = root.element("TIME") == null ? "false" : root.element("TIME").getTextTrim();
    System.out.println("cutFile:"+cutFile+" time:"+time);


    // File fouthPath = new File(this.getServletContext().getRealPath("")+File.separator+"uploadfiles");

    } catch (UnsupportedEncodingException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
    } catch (DocumentException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
    }
    }
    /**
    * 新建目录
    * @param folderPath String 如 c:/fqf
    * @return boolean
    */
    public static void newFolder(String folderPath) {
    try {
    String filePath = folderPath;
    filePath = filePath.toString();
    java.io.File myFilePath = new java.io.File(filePath);
    if (!myFilePath.exists()) {
    myFilePath.mkdir();
    }
    }
    catch (Exception e) {
    System.out.println("新建目录操作出错");
    e.printStackTrace();
    }
    }

    /**
    * 新建文件
    * @param filePathAndName String 文件路径及名称 如c:/fqf.txt
    * @param fileContent String 文件内容
    * @return boolean
    */
    public static void newFile(String filePathAndName, String fileContent) {

    try {
    String filePath = filePathAndName;
    filePath = filePath.toString();
    File myFilePath = new File(filePath);
    if (!myFilePath.exists()) {
    myFilePath.createNewFile();
    }
    FileWriter resultFile = new FileWriter(myFilePath);
    PrintWriter myFile = new PrintWriter(resultFile);
    String strContent = fileContent;
    myFile.println(strContent);
    resultFile.close();

    }
    catch (Exception e) {
    System.out.println("新建目录操作出错");
    e.printStackTrace();

    }

    }

    /**
    * 删除文件
    * @param filePathAndName String 文件路径及名称 如c:/fqf.txt
    * @param fileContent String
    * @return boolean
    */
    public static void delFile(String filePathAndName) {
    try {
    String filePath = filePathAndName;
    filePath = filePath.toString();
    java.io.File myDelFile = new java.io.File(filePath);
    myDelFile.delete();

    }
    catch (Exception e) {
    System.out.println("删除文件操作出错");
    e.printStackTrace();

    }

    }

    /**
    * 删除文件夹
    * @param filePathAndName String 文件夹路径及名称 如c:/fqf
    * @param fileContent String
    * @return boolean
    */
    public static void delFolder(String folderPath) {
    try {
    delAllFile(folderPath); //删除完里面所有内容
    String filePath = folderPath;
    filePath = filePath.toString();
    java.io.File myFilePath = new java.io.File(filePath);
    myFilePath.delete(); //删除空文件夹

    }
    catch (Exception e) {
    System.out.println("删除文件夹操作出错");
    e.printStackTrace();

    }

    }

    /**
    * 删除文件夹里面的所有文件
    * @param path String 文件夹路径 如 c:/fqf
    */
    public static void delAllFile(String path) {
    File file = new File(path);
    if (!file.exists()) {
    return;
    }
    if (!file.isDirectory()) {
    return;
    }
    String[] tempList = file.list();
    File temp = null;
    for (int i = 0; i < tempList.length; i++) {
    if (path.endsWith(File.separator)) {
    temp = new File(path + tempList[i]);
    }
    else {
    temp = new File(path + File.separator + tempList[i]);
    }
    if (temp.isFile()) {
    temp.delete();
    }
    if (temp.isDirectory()) {
    delAllFile(path+"/"+ tempList[i]);//先删除文件夹里面的文件
    delFolder(path+"/"+ tempList[i]);//再删除空文件夹
    }
    }
    }

    /**
    * 复制单个文件
    * @param oldPath String 原文件路径 如:c:/fqf.txt
    * @param newPath String 复制后路径 如:f:/fqf.txt
    * @return boolean
    */
    public static void copyFile(String oldPath, String newPath) {
    try {
    int bytesum = 0;
    int byteread = 0;
    File oldfile = new File(oldPath);
    if (oldfile.exists()) { //文件存在时
    InputStream inStream = new FileInputStream(oldPath); //读入原文件
    FileOutputStream fs = new FileOutputStream(newPath);
    byte[] buffer = new byte[1444];
    int length;
    while ( (byteread = inStream.read(buffer)) != -1) {
    bytesum += byteread; //字节数 文件大小
    System.out.println(bytesum);
    fs.write(buffer, 0, byteread);
    }
    inStream.close();
    }
    }
    catch (Exception e) {
    System.out.println("复制单个文件操作出错");
    e.printStackTrace();

    }

    }

    /**
    * 复制整个文件夹内容
    * @param oldPath String 原文件路径 如:c:/fqf
    * @param newPath String 复制后路径 如:f:/fqf/ff
    * @return boolean
    */
    public static void copyFolder(String oldPath, String newPath) {

    try {
    (new File(newPath)).mkdirs(); //如果文件夹不存在 则建立新文件夹
    File a=new File(oldPath);
    // if(a.isDirectory()){
    String[] file=a.list();
    File temp=null;
    for (int i = 0; i < file.length; i++) {
    if(oldPath.endsWith(File.separator)){
    temp=new File(oldPath+file[i]);
    }
    else{
    temp=new File(oldPath+File.separator+file[i]);
    }

    if(temp.isFile()){
    FileInputStream input = new FileInputStream(temp);
    FileOutputStream output = new FileOutputStream(newPath + "/" +
    (temp.getName()).toString());
    byte[] b = new byte[1024 * 5];
    int len;
    while ( (len = input.read(b)) != -1) {
    output.write(b, 0, len);
    }
    output.flush();
    output.close();
    input.close();
    }
    if(temp.isDirectory()){//如果是子文件夹
    copyFolder(oldPath+"/"+file[i],newPath+"/"+file[i]);
    }
    }
    // }else{
    //
    // }

    }
    catch (Exception e) {
    System.out.println("复制整个文件夹内容操作出错");
    e.printStackTrace();

    }

    }

    /**
    * 移动文件到指定目录
    * @param oldPath String 如:c:/fqf.txt
    * @param newPath String 如:d:/fqf.txt
    */
    public static void moveFile(String oldPath, String newPath) {
    copyFile(oldPath, newPath);
    delFile(oldPath);

    }

    /**
    * 移动文件到指定目录
    * @param oldPath String 如:c:/fqf.txt
    * @param newPath String 如:d:/fqf.txt
    */
    public static void moveFolder(String oldPath, String newPath) {
    copyFolder(oldPath, newPath);
    delFolder(oldPath);

    }
    }

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  • 原文地址:https://www.cnblogs.com/chai-blogs/p/5291014.html
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