Thread.currentThread().getContextClassLoader().getResource("") //获得资源文件(.class文件)所在路径
ClassLoader.getSystemResource("")
Class_Name.class.getClassLoader().getResource("")
Class_Name.class .getResource("/")
Class_Name.class .getResource("") // 获得当前类所在路径
System.getProperty("user.dir") // 获得项目根目录的绝对路径
System.getProperty("java.class.path")//得到类路径和包路径
打印输出依次如下:
file:/F:/work_litao/uri_test/WebContent/WEB-INF/classes/
file:/F:/work_litao/uri_test/WebContent/WEB-INF/classes/
file:/F:/work_litao/uri_test/WebContent/WEB-INF/classes/
file:/F:/work_litao/uri_test/WebContent/WEB-INF/classes/
file:/F:/work_litao/uri_test/WebContent/WEB-INF/classes/com/xml/imp/
F:\work_litao\uri_test
F:\work_litao\uri_test\WebContent\WEB-INF\classesF:\work_litao\uri_test\WebContent\WEB-INF\lib\dom4j.jar
2、 JSP中获得当前应用的相对路径和绝对路径
根目录所对应的绝对路径:request.getRequestURI()
文件的绝对路径 :application.getRealPath(request.getRequestURI())
当前web应用的绝对路径 :application.getRealPath("/")
取得请求文件的上层目录:new File(application.getRealPath(request.getRequestURI())).getParent()
可以通过changeWorkingDirectory方法切换上传路径来进行文件上传。上传方法举例:
/**
* 上传文件
*
* @param fileName
* @param plainFilePath 文件路径路径
* @param filepath
* @return
* @throws Exception
*/
public static String fileUploadByFtp(String plainFilePath, String fileName, String filepath) throws Exception {
FileInputStream fis = null
ByteArrayOutputStream bos = null
FTPClient ftpClient = new FTPClient()
String bl = "false"
try {
fis = new FileInputStream(plainFilePath)
bos = new ByteArrayOutputStream(fis.available())
byte[] buffer = new byte[1024]
int count = 0
while ((count = fis.read(buffer)) != -1) {
bos.write(buffer, 0, count)
}
bos.flush()
Log.info("加密上传文件开始")
Log.info("连接远程上传服务器"+CCFCCBUtil.CCFCCBHOSTNAME+":"+22)
ftpClient.connect(CCFCCBUtil.CCFCCBHOSTNAME, 22)
ftpClient.login(CCFCCBUtil.CCFCCBLOGINNAME, CCFCCBUtil.CCFCCBLOGINPASSWORD)
FTPFile[] fs
fs = ftpClient.listFiles()
for (FTPFile ff : fs) {
if (ff.getName().equals(filepath)) {
bl="true"
ftpClient.changeWorkingDirectory("/"+filepath+"")
}
}
Log.info("检查文件路径是否存在:/"+filepath)
if("false".equals(bl)){
ViewUtil.dataSEErrorPerformedCommon( "查询文件路径不存在:"+"/"+filepath)
return bl
}
ftpClient.setBufferSize(1024)
ftpClient.setControlEncoding("GBK")
// 设置文件类型(二进制)
ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE)
ftpClient.storeFile(fileName, fis)
Log.info("上传文件成功:"+fileName+"。文件保存路径:"+"/"+filepath+"/")
return bl
} catch (Exception e) {
throw e
} finally {
if (fis != null) {
try {
fis.close()
} catch (Exception e) {
Log.info(e.getLocalizedMessage(), e)
}
}
if (bos != null) {
try {
bos.close()
} catch (Exception e) {
Log.info(e.getLocalizedMessage(), e)
}
}
}
}
备注:只需要修改上传的服务器地址、用户名、密码即可进行服务器访问上传。根据实际需要修改即可。
直接通过工具类进行解压或者压缩文件即可。import java.io.BufferedInputStream
import java.io.BufferedOutputStream
import java.io.Closeable
import java.io.File
import java.io.FileOutputStream
import java.io.IOException
import java.io.InputStream
import java.util.Enumeration
import java.util.zip.ZipEntry
import java.util.zip.ZipFile
/**
*
* @author gdb
*/
public class ZipUtilAll {
public static final int DEFAULT_BUFSIZE = 1024 * 16
/**
* 解压Zip文件
*
* @param srcZipFile
* @param destDir
* @throws IOException
*/
public static void unZip(File srcZipFile, String destDir) throws IOException
{
ZipFile zipFile = new ZipFile(srcZipFile)
unZip(zipFile, destDir)
}
/**
* 解压Zip文件
*
* @param srcZipFile
* @param destDir
* @throws IOException
*/
public static void unZip(String srcZipFile, String destDir) throws IOException
{
ZipFile zipFile = new ZipFile(srcZipFile)
unZip(zipFile, destDir)
}
/**
* 解压Zip文件
*
* @param zipFile
* @param destDir
* @throws IOException
*/
public static void unZip(ZipFile zipFile, String destDir) throws IOException
{
Enumeration<? extends ZipEntry>entryEnum = zipFile.entries()
ZipEntry entry = null
while (entryEnum.hasMoreElements()) {
entry = entryEnum.nextElement()
File destFile = new File(destDir + entry.getName())
if (entry.isDirectory()) {
destFile.mkdirs()
}
else {
destFile.getParentFile().mkdirs()
InputStream eis = zipFile.getInputStream(entry)
System.out.println(eis.read())
write(eis, destFile)
}
}
}
/**
* 将输入流中的数据写到指定文件
*
* @param inputStream
* @param destFile
*/
public static void write(InputStream inputStream, File destFile) throws IOException
{
BufferedInputStream bufIs = null
BufferedOutputStream bufOs = null
try {
bufIs = new BufferedInputStream(inputStream)
bufOs = new BufferedOutputStream(new FileOutputStream(destFile))
byte[] buf = new byte[DEFAULT_BUFSIZE]
int len = 0
while ((len = bufIs.read(buf, 0, buf.length)) >0) {
bufOs.write(buf, 0, len)
}
} catch (IOException ex) {
throw ex
} finally {
close(bufOs, bufIs)
}
}
/**
* 安全关闭多个流
*
* @param streams
*/
public static void close(Closeable... streams)
{
try {
for (Closeable s : streams) {
if (s != null)
s.close()
}
} catch (IOException ioe) {
ioe.printStackTrace(System.err)
}
}
/**
* @param args
* @throws java.lang.Exception
*/
public static void main(String[] args) throws Exception
{
// unZip(new File(ZipDemo.class.getResource("D:/123/HKRT-B2B.zip").toURI()), "D:/123/")
unZip("D:/123/123.zip", "D:/123/")
// new File()
}
}
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