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]
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());
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]
/** 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();
}
/** 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]
ZipFile("d:/hello.txt", "d:/hello.zip");
ZipFile("d:/hello.txt", "d:/hello.zip");
压缩多个文件（文件夹）
[java]
/** 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);
zipOut.putNextEntry(new ZipEntry(file.getName() + File.separator + files.getName()));
int temp = 0;
while((temp = input.read()) != -1){
zipOut.write(temp);
}
input.close();
}
}
zipOut.close();
} catch (Exception e) {
e.printStackTrace();
}
/** 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);
zipOut.putNextEntry(new ZipEntry(file.getName() + File.separator + files.getName()));
int temp = 0;
while((temp = input.read()) != -1){
zipOut.write(temp);
}
input.close();
}
}
zipOut.close();
} catch (Exception e) {
e.printStackTrace();
}
}应用：
[java]
ZipMultiFile("f:/uu", "f:/zippath.zip");
ZipMultiFile("f:/uu", "f:/zippath.zip");
解压缩单个文件
[java]
/** 解压缩（解压缩单个文件）*/
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();
}
}
/** 解压缩（解压缩单个文件）*/
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]
ZipContraFile("d:/hello.zip","d:/eee.txt", "hello.txt");
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]
/** 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();
}
}
/** 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]
ZipContraMultiFile("f:/zippath.zip", "d:/");
ZipContraMultiFile("d:/hello.zip", "d:/");
ZipContraMultiFile("f:/zippath.zip", "d:/");
ZipContraMultiFile("d:/hello.zip", "d:/");
