用java代码压缩应用到程序了，代码一般是比较复杂的，对pdf文件的mate标签优化，这类标签包括三类，pdf文件不是网页就是个文件，何况我们可以用pdf压缩工具压缩，下面有个解决方法，楼主可以做参照。
1：点击打开工具，打开主页面上有三个功能进行选择，我们选择pdf文件压缩。
2：这这个页面中我们选择pdf文件在这里打开，点击“添加文件”按钮将文件添加进来。
3：然后在页面中点击“开始压缩”就可以开始压缩文件了。
4：压缩完成的文件页面会显示已经完成。
package com.javatest.techzero.gui
import java.io.File
import java.io.FileInputStream
import java.io.FileOutputStream
import java.io.InputStream
import java.io.OutputStream
import java.util.zip.ZipEntry
import java.util.zip.ZipFile
import java.util.zip.ZipInputStream
public class ZipFileDemo {
@SuppressWarnings("resource")
public static void main(String args[]) throws Exception {
File file = new File("d:" + File.separator + "test.zip")
File outFile = null
ZipFile zipFile = new ZipFile(file)
ZipInputStream zipInput = new ZipInputStream(new FileInputStream(file))
ZipEntry entry = null
InputStream input = null
OutputStream out = null
while ((entry = zipInput.getNextEntry()) != null) {
System.out.println("开始解压缩" + entry.getName() + "文件。。。")
outFile = new File("d:" + File.separator + entry.getName())
if (!outFile.getParentFile().exists()) {
outFile.getParentFile().mkdir()
}
if (!outFile.exists()) {
outFile.createNewFile()
}
input = zipFile.getInputStream(entry)
out = new FileOutputStream(outFile)
int temp = 0
while ((temp = input.read()) != -1) {
<SPAN style="WHITE-SPACE: pre"> </SPAN>//System.out.println(temp)
out.write(temp)
}
input.close()
out.close()
}
System.out.println("Done!")
}
}
仅供参考
下面的示例代码演示如何创建zip压缩包。首先需要由需要压缩的文件创建一个InputStream对象，然后读取文件内容写入到ZipOutputStream中。
ZipOutputStream类接受FileOutputStream作为参数。创建号ZipOutputStream对象后需要创建一个zip entry，然后写入。
import java.io.FileInputStream
import java.io.FileOutputStream
import java.io.IOException
import java.util.zip.ZipEntry
import java.util.zip.ZipOutputStream
/**
*
* @author outofmemory.cn
*/
public class Main {
/**
* Creates a zip file
*/
public void createZipFile() {
try {
String inputFileName = "test.txt"
String zipFileName = "compressed.zip"
//Create input and output streams
FileInputStream inStream = new FileInputStream(inputFileName)
ZipOutputStream outStream = new ZipOutputStream(new FileOutputStream(zipFileName))
// Add a zip entry to the output stream
outStream.putNextEntry(new ZipEntry(inputFileName))
byte[] buffer = new byte[1024]
int bytesRead
//Each chunk of data read from the input stream
//is written to the output stream
while ((bytesRead = inStream.read(buffer)) >0) {
outStream.write(buffer, 0, bytesRead)
}
//Close zip entry and file streams
outStream.closeEntry()
outStream.close()
inStream.close()
} catch (IOException ex) {
ex.printStackTrace()
}
}
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
new Main().createZipFile()
}
