转自:http://www.cdtarena.com/java.html
Java API中的import java.util.zip.*;包下包含了Java对于压缩文件的所有相关操作。
我们可以使用该包中的方法,结合IO中的相关知识,进行文件的压缩和解压缩相关操作。
ZipFile
java中的每一个压缩文件都是可以使用ZipFile来进行表示的。
[java] view plaincopyprint?
- File file = new File("F:/zippath.zip");
- ZipFile zipFile = new ZipFile(file);
- System.out.println("压缩文件的名称为:" + zipFile.getName());
压缩单个文件
[java] view plaincopyprint?
- /** 压缩单个文件*/
- public static void ZipFile(String filepath ,String zippath) {
- try {
- File file = new File(filepath);
- File zipFile = new File(zippath);
- InputStream input = new FileInputStream(file);
- ZipOutputStream zipOut = new ZipOutputStream(new FileOutputStream(zipFile));
- zipOut.putNextEntry(new ZipEntry(file.getName()));
- int temp = 0;
- while((temp = input.read()) != -1){
- zipOut.write(temp);
- }
- input.close();
- zipOut.close();
- } catch (Exception e) {
- e.printStackTrace();
- }
应用:
[java] view plaincopyprint?
- ZipFile("d:/hello.txt", "d:/hello.zip");
压缩多个文件(文件夹)
[java] view plaincopyprint?
- /** 一次性压缩多个文件,文件存放至一个文件夹中*/
- public static void ZipMultiFile(String filepath ,String zippath) {
- try {
- File file = new File(filepath);// 要被压缩的文件夹
- File zipFile = new File(zippath);
- InputStream input = null;
- ZipOutputStream zipOut = new ZipOutputStream(new FileOutputStream(zipFile));
- if(file.isDirectory()){
- File[] files = file.listFiles();
- for(int i = 0; i < files.length; ++i){
- input = new FileInputStream(files[i]);
- zipOut.putNextEntry(new ZipEntry(file.getName() + File.separator + files[i].getName()));
- int temp = 0;
- while((temp = input.read()) != -1){
- zipOut.write(temp);
- }
- input.close();
- }
- }
- zipOut.close();
- } catch (Exception e) {
- e.printStackTrace();
- }
应用:成都java培训
[java] view plaincopyprint?
- ZipMultiFile("f:/uu", "f:/zippath.zip");
解压缩单个文件
[java] view plaincopyprint?
- /** 解压缩(解压缩单个文件)*/ www.cdtarena.com
- public static void ZipContraFile(String zippath ,String outfilepath ,String filename) {
- try {
- File file = new File(zippath);//压缩文件路径和文件名
- File outFile = new File(outfilepath);//解压后路径和文件名
- ZipFile zipFile = new ZipFile(file);
- ZipEntry entry = zipFile.getEntry(filename);//所解压的文件名
- InputStream input = zipFile.getInputStream(entry);
- OutputStream output = new FileOutputStream(outFile);
- int temp = 0;
- while((temp = input.read()) != -1){
- output.write(temp);
- }
- input.close();
- output.close();
- } catch (Exception e) {
- e.printStackTrace();
- }
- }
应用:
[java] view plaincopyprint?
- ZipContraFile("d:/hello.zip","d:/eee.txt", "hello.txt");
解压缩多个文件
ZipInputStream类:
当我们需要解压缩多个文件的时候,ZipEntry就无法使用了。
如果想操作更加复杂的压缩文件,我们就必须使用ZipInputStream类。
[java] view plaincopyprint?
- /** 解压缩(压缩文件中包含多个文件)可代替上面的方法使用。
- * ZipInputStream类
- * 当我们需要解压缩多个文件的时候,ZipEntry就无法使用了,
- * 如果想操作更加复杂的压缩文件,我们就必须使用ZipInputStream类
- * */
- public static void ZipContraMultiFile(String zippath ,String outzippath){
- try {
- File file = new File(zippath);
- File outFile = null;
- ZipFile zipFile = new ZipFile(file);
- ZipInputStream zipInput = new ZipInputStream(new FileInputStream(file));
- ZipEntry entry = null;
- InputStream input = null;
- OutputStream output = null;
- while((entry = zipInput.getNextEntry()) != null){
- System.out.println("解压缩" + entry.getName() + "文件");
- outFile = new File(outzippath + File.separator + entry.getName());
- if(!outFile.getParentFile().exists()){
- outFile.getParentFile().mkdir();
- }
- if(!outFile.exists()){
- outFile.createNewFile();
- }
- input = zipFile.getInputStream(entry);
- output = new FileOutputStream(outFile);
- int temp = 0;
- while((temp = input.read()) != -1){
- output.write(temp);
- }
- input.close();
- output.close();
- }
- } catch (Exception e) {
- e.printStackTrace();
- }
- }
应用:
[java] view plaincopyprint?
- ZipContraMultiFile("f:/zippath.zip", "d:/");
- ZipContraMultiFile("d:/hello.zip", "d:/");