扫描某目录下的所有文件的MD5码并导出文件【可执行jar】
https://www.cnblogs.com/nihaorz/p/7852641.html
pom
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>geostack</groupId>
<artifactId>geostack-md5</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.10</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.5</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>3.0.0</version>
<configuration>
<archive>
<manifest>
<mainClass>com.nihaorz.util.md5.MD5Util</mainClass>
</manifest>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</plugin>
</plugins>
</build>
</project>
MD5Util.java
package com.nihaorz.util.md5;
import org.apache.commons.codec.digest.DigestUtils;
import org.apache.commons.io.IOUtils;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
public class MD5Util {
public static void main(String[] args) {
String[] _args = new String[]{
"D:\\.m2\\repository\\geostack\\geostack-balance-core\\2.0.0.0-SNAPSHOT",
"md5",
"D:\\Nihaorz\\Desktop\\md5.txt"
};
run(args);
}
private static void run(String[] args) {
if (args == null || args.length == 0) {
System.out.println("该jar文件功能为打印或导出某单个文件或者某个目录下所有文件的的MD5码");
System.out.println("第一个参数【必填】为文件路径或文件夹路径");
System.out.println("第二个参数【必填】为排序规则，name：以文件名升序，md5：以md5码升序");
System.out.println("第三个参数【选填】为导出文件路径，配绝对地址，包含文件名，不存在时自动创建，不填时数据将只打印在控制台");
} else {
if (args.length >= 2) {
System.out.println("文件扫描中......");
System.out.println("---------------------------------------------------------------------------");
String path = args[0];
File file = new File(path);
if (file.exists()) {
String sort = args[1];
if ("name".equalsIgnoreCase(sort) || "md5".equalsIgnoreCase(sort)) {
Long time = null;
long start = System.currentTimeMillis();
Map<String, File> map = getMD5ByPath(file);
Map<String, String> map1 = new HashMap<String, String>();
StringBuilder sb = new StringBuilder();
if (map.size() > 0) {
List<String> list = new ArrayList<String>();
Iterator<String> it = map.keySet().iterator();
while (it.hasNext()) {
String md5 = it.next();
map1.put(map.get(md5).getName(), md5);
if ("name".equalsIgnoreCase(sort)) {
list.add(map.get(md5).getName());
} else if ("md5".equalsIgnoreCase(sort)) {
list.add(md5);
}
}
String[] strings = new String[list.size()];
strings = list.toArray(strings);
Arrays.sort(strings, String.CASE_INSENSITIVE_ORDER);
if ("name".equalsIgnoreCase(sort)) {
for (String string : strings) {
sb.append(map1.get(string)).append(" -- ").append(string).append("\n");
System.out.println(map1.get(string) + " -- " + string);
}
} else if ("md5".equalsIgnoreCase(sort)) {
for (String string : strings) {
sb.append(string).append(" -- ").append(map.get(string).getName()).append("\n");
System.out.println(string + " -- " + map.get(string).getName());
}
}
System.out.println("---------------------------------------------------------------------------");
System.out.println("扫描路径：" + args[0]);
System.out.println("扫描文件总数：" + map.size());
time = System.currentTimeMillis() - start;
}
if (time != null) {
System.out.println("扫描耗时：" + time + "毫秒");
} else {
long end = System.currentTimeMillis();
System.out.println("扫描耗时：" + (end - start) + "毫秒");
}
if (args.length >= 3) {
String outPath = args[2];
File outFile = new File(outPath);
if (!outFile.exists()) {
try {
outFile.createNewFile();
} catch (IOException e) {
System.out.println("文件创建失败，请检查导出路径配置！");
}
}
FileOutputStream fos = null;
try {
fos = new FileOutputStream(outFile);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
PrintWriter pw = new PrintWriter(fos);
StringBuilder result = new StringBuilder();
result.append("扫描路径：").append(args[0]).append("\n")
.append("扫描文件总数：").append(map.size()).append("\n")
.append("扫描耗时：").append(time).append("毫秒").append("\n")
.append("导出文件：").append(args[2]).append("\n")
.append("---------------------------------------------------------------------------\n")
.append(sb);
pw.write(result.toString().toCharArray());
pw.flush();
pw.close();
System.out.println("导出文件："+args[2]);
}
} else {
System.out.println("排序规则不合法！");
}
} else {
System.out.println("文件路径或文件夹路径不存在！");
}
}
}
}
/**
* 获取某指定文件或某目录下的文件的MD5码map
*
* @param path
* @return
*/
private static Map<String, File> getMD5ByPath(File path) {
Map<String, File> result = new HashMap<String, File>();
if (path.exists()) {
if (path.isDirectory()) {
File[] files = path.listFiles();
for (File file : files) {
try {
if (!file.isDirectory()) {
String md5 = DigestUtils.md5Hex(IOUtils.toByteArray(new FileInputStream(file)));
result.put(md5, file);
}
} catch (IOException e) {
e.printStackTrace();
}
}
} else {
try {
String md5 = DigestUtils.md5Hex(IOUtils.toByteArray(new FileInputStream(path)));
result.put(md5, path);
} catch (IOException e) {
e.printStackTrace();
}
}
}
return result;
}
}
进到项目根目录下执行
mvn clean compile assembly:single
然后到target目录找到以-jar-with-dependencies.jar结尾的jar文件，即可以使用java -jar命令执行
以下为附件，解压可用：
