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com.gitee.huanminabc.utils_common.file.JarUtil Maven / Gradle / Ivy
package com.gitee.huanminabc.utils_common.file;
import java.io.*;
import java.util.*;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import java.util.jar.JarOutputStream;
import java.util.stream.Collectors;
import java.util.zip.ZipEntry;
/**
* 简要描述
*
* @Author: huanmin
* @Date: 2022/11/24 12:54
* @Version: 1.0
* @Description: 文件作用详细描述....
*/
public class JarUtil {
/**
* 读取jar包中的所有文件,并且返回文件的名称和文件的输入流
*
* @param jarPath jar包的路径
* @return
* @throws IOException
*/
public static Map readJarFile(String jarPath) throws IOException {
Map map = new HashMap<>();
JarFile jarFile = new JarFile(jarPath);
Enumeration entries = jarFile.entries();
while (entries.hasMoreElements()) {
JarEntry jarEntry = entries.nextElement();
InputStream inputStream = jarFile.getInputStream(jarEntry);
map.put(jarEntry, inputStream);
}
return map;
}
public static Map readJarFileRecursion(String jarPath) throws IOException {
Map jarEntryInputStreamMap = new HashMap<>();
readJarFileRecursion(jarPath, jarEntryInputStreamMap);
return jarEntryInputStreamMap;
}
//递归读取jar包中的所有jar包的所有文件
public static void readJarFileRecursion(String jarPath, Map map) throws IOException {
Map jarEntryInputStreamMap = readJarFile(jarPath);
for (Map.Entry entry : jarEntryInputStreamMap.entrySet()) {
JarEntry key = entry.getKey();
InputStream value = entry.getValue();
String name = key.getName();
if (name.endsWith(".jar")) {
//将jar包复制到临时目录
String tempPath = System.getProperty("java.io.tmpdir");
File file = new File(tempPath + File.separator + name);
if (!file.getParentFile().exists()) {
file.getParentFile().mkdirs();
}
FileOutputStream fileOutputStream = new FileOutputStream(file);
byte[] bytes = new byte[1024];
int len;
while ((len = value.read(bytes)) != -1) {
fileOutputStream.write(bytes, 0, len);
}
fileOutputStream.close();
value.close();
readJarFileRecursion(file.getAbsolutePath(), map);
FileUtil.delFilesAllReview(file.getAbsolutePath(), true);
}
map.put(key, value);
}
}
/**
* @param jarPath jar包的路径
* @param regex 正则表达式 ,用来匹配文件名
* 比如: ^scenery/.+ 获取scenery文件夹下的所有文件 ,比如.*\.jar$ 获取所有jar文件
* @return
* @throws IOException
*/
public static Map readJarFile(String jarPath, String regex) throws IOException {
Map jarEntryInputStreamMap = readJarFile(jarPath);
jarEntryInputStreamMap = jarEntryInputStreamMap.entrySet().stream().filter(entry -> {
String name = entry.getKey().getName();
return name.matches(regex);
}).collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
return jarEntryInputStreamMap;
}
public static Map readJarFileRecursion(String jarPath, String regex) throws IOException {
Map jarEntryInputStreamMap = readJarFileRecursion(jarPath);
jarEntryInputStreamMap = jarEntryInputStreamMap.entrySet().stream().filter(entry -> {
String name = entry.getKey().getName();
return name.matches(regex);
}).collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
return jarEntryInputStreamMap;
}
//将jar指定的文件复制到指定的目录
/**
*
* @param jarPath jar包的路径
* @param regex 正则表达式 ,用来匹配文件名
* @param targetPath 目标路径(自己本地的路径)
* @throws IOException
*/
public static void copyJarFile(String jarPath, String regex, String targetPath) throws IOException {
Map jarEntryInputStreamMap = readJarFile(jarPath, regex);
for (Map.Entry entry : jarEntryInputStreamMap.entrySet()) {
JarEntry key = entry.getKey();
InputStream value = entry.getValue();
String name = key.getName();
File file = new File(targetPath + File.separator + name);
if (!file.getParentFile().exists()) {
file.getParentFile().mkdirs();
}
if (!file.exists()) {
file.createNewFile();
}
FileOutputStream fileOutputStream = new FileOutputStream(file);
byte[] bytes = new byte[1024];
int len;
while ((len = value.read(bytes)) != -1) {
fileOutputStream.write(bytes, 0, len);
}
fileOutputStream.close();
value.close();
}
}
//获取jar包中的所有jar包
public static Map getJarAllFile(String jarPath) throws IOException {
Map map = readJarFileRecursion(jarPath, ".*\\.jar$");
return map;
}
//向jar包中指定位置添加文件
/**
*
* @param jarPath jar包的路径
* @param filePath 文件的路径
* @param targetPath 文件在jar包中的路径 ( targetPath+ +File.separator+filePath.getName)
* @throws IOException
*/
public static void addFileToJar(String jarPath, String filePath, String targetPath) throws IOException {
File file = new File(filePath);
if (!file.exists()) {
throw new FileNotFoundException("文件不存在");
}
JarFile jarFile = new JarFile(jarPath);
Enumeration entries = jarFile.entries();
List jarEntryList = new ArrayList<>();
File jarFile1 = new File(jarPath);
while (entries.hasMoreElements()) {
JarEntry jarEntry = entries.nextElement();
jarEntryList.add(jarEntry);
}
File file1 = new File(jarFile1.getAbsolutePath() + ".back");
JarOutputStream jarOutputStream = new JarOutputStream(new FileOutputStream(file1));
for (JarEntry jarEntry : jarEntryList) {
jarOutputStream.putNextEntry(jarEntry);
InputStream inputStream = jarFile.getInputStream(jarEntry);
byte[] bytes = new byte[1024];
int len;
while ((len = inputStream.read(bytes)) != -1) {
jarOutputStream.write(bytes, 0, len);
}
inputStream.close();
}
JarEntry jarEntry = new JarEntry(targetPath + File.separator + file.getName());
ZipEntry entry = jarFile.getEntry(jarEntry.getName());
if (entry == null) {
jarOutputStream.putNextEntry(jarEntry);
FileInputStream fileInputStream = new FileInputStream(file);
byte[] bytes = new byte[1024];
int len;
while ((len = fileInputStream.read(bytes)) != -1) {
jarOutputStream.write(bytes, 0, len);
}
fileInputStream.close();
}else {
System.out.println("已经存在:"+jarEntry.getName());
}
jarFile.close();
jarOutputStream.close();
FileUtil.delFileGc(jarFile1);//删除原jar包
file1.renameTo(jarFile1);
}
//删除jar包中的指定文件
/**
*
* @param jarPath jar包的路径
* @param targetPath 文件在jar包中的路径 (可以用压缩包工具查看具体路径格式)
* @throws IOException
*/
public static void delFileFromJar(String jarPath, String targetPath) throws IOException {
JarFile jarFile = new JarFile(jarPath);
Enumeration entries = jarFile.entries();
List jarEntryList = new ArrayList<>();
File jarFile1 = new File(jarPath);
while (entries.hasMoreElements()) {
JarEntry jarEntry = entries.nextElement();
jarEntryList.add(jarEntry);
}
File file1 = new File(jarFile1.getAbsolutePath() + ".back");
JarOutputStream jarOutputStream = new JarOutputStream(new FileOutputStream(file1));
for (JarEntry jarEntry : jarEntryList) {
if (!jarEntry.getName().equals(targetPath)) {//不等于要删除的文件
jarOutputStream.putNextEntry(jarEntry);
InputStream inputStream = jarFile.getInputStream(jarEntry);
byte[] bytes = new byte[1024];
int len;
while ((len = inputStream.read(bytes)) != -1) {
jarOutputStream.write(bytes, 0, len);
}
inputStream.close();
}
}
jarFile.close();
jarOutputStream.close();
FileUtil.delFileGc(jarFile1);//
file1.renameTo(jarFile1);
}
}
