以下代码适用于小型txt文件,但是如果我们有大型txt文件,则会在 string [] array = File.ReadAllLines(&#34; hash.txt&#34;)中给出outofmemory异常; < /强>
hash.txt文件是500 mb
我尝试了一些来自互联网的建议,但我没有做到这一点。
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
namespace Hash_Parser
{
internal class Program
{
private static List<string> users = new List<string>();
private static Dictionary<string, int> hash_original = new Dictionary<string, int>();
private static List<string> hash_found = new List<string>();
private static List<string> pass = new List<string>();
private static string hash_path = "split.txt";
private static void split()
{
Console.WriteLine("Splitting...");
StreamWriter streamWriter = new StreamWriter("user.txt");
StreamWriter streamWriter2 = new StreamWriter("hash.txt");
string[] array = File.ReadAllLines(Program.hash_path);
for (int i = 0; i < array.Length; i++)
{
string text = array[i];
string[] array2 = text.Split(new char[]
{
':'
}, 2);
if (array2.Count<string>() >= 2)
{
streamWriter.WriteLine(array2[0]);
streamWriter2.WriteLine(array2[1]);
}
}
streamWriter.Close();
streamWriter2.Close();
Console.WriteLine("Saved as user.txt and hash.txt");
}
private static void populate()
{
Console.WriteLine("Populating lists...");
Program.users.AddRange(File.ReadAllLines("user.txt"));
Program.pass.AddRange(File.ReadAllLines("pass.txt"));
Program.hash_found.AddRange(File.ReadAllLines("found.txt"));
int num = 0;
string[] array = File.ReadAllLines("hash.txt");
for (int i = 0; i < array.Length; i++)
{
string key = array[i];
Program.hash_original.Add(key, num);
num++;
}
}
private static void seek()
{
StreamWriter streamWriter = new StreamWriter("userpass.txt");
int num = 0;
int num2 = 100;
foreach (string current in Program.hash_found)
{
if (Program.hash_original.ContainsKey(current))
{
streamWriter.WriteLine(Program.users[Program.hash_original[current]] + ":" + Program.pass[num]);
}
num++;
if (num >= num2)
{
Console.Title = string.Concat(new object[]
{
"Processed: ",
num,
" : ",
Program.hash_found.Count
});
num2 += 1000;
}
}
Console.Title = string.Concat(new object[]
{
"Processed: ",
num,
" : ",
Program.hash_found.Count
});
streamWriter.Close();
}
private static void Main(string[] args)
{
Console.WriteLine("Split hash /split");
Console.WriteLine("'split.txt'\n");
Console.WriteLine("Parse hashes /parse");
Console.WriteLine("'user.txt' | 'found.txt' | 'hash.txt' | 'pass.txt'");
string a = Console.ReadLine();
if (a == "/split")
{
Program.split();
}
else
{
if (a == "/parse")
{
Program.populate();
Console.WriteLine("Processing...");
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
Program.seek();
stopwatch.Stop();
Console.WriteLine("Saved as userpass.txt");
Console.WriteLine("Time elapsed: " + stopwatch.Elapsed);
Console.ReadKey();
}
}
}
}
}
&#13;
答案 0 :(得分:4)
试试这段代码:
foreach (var line in File.ReadLines(_filePath))
{
//Don't put "line" into a list or collection.
//Just make your processing on it.
}
带引号的文本:只需使用File.ReadLines,它返回一个IEnumerable并且不会立即将所有行加载到内存中。
引用链接:https://stackoverflow.com/a/13416225/3041974
我希望它有所帮助。
答案 1 :(得分:0)
请注意.NET中的进程限制
http://www.codeproject.com/Articles/483475/Memory-Limits-in-a-NET-Process
例如,32位系统的物理内存不能超过4 GB。毋庸置疑,2 ^ 32将为您提供具有4.294.967.296个不同条目的虚拟地址空间,这正是4GB限制的来源。但即使系统上有4GB可用,您的应用程序实际上也只能看到2GB。为什么?
因为在32位系统上,Windows会拆分虚拟地址空间 两个相等的部分:一个用于用户模式应用程序,另一个用于用户模式 用于内核(系统应用程序)。可以覆盖此行为 使用&#34; / 3gb&#34; Windows boot.ini配置文件中的标志。如果我们这样做 因此,系统将为用户应用程序保留3GB,并保留1 GB 对于内核。
任务管理器中的MEM使用过程是什么?