Go读书社区web开发与高性能架构优化

Posted 2021-09-04 求索

tags:

篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了Go读书社区web开发与高性能架构优化相关的知识，希望对你有一定的参考价值。

download:Go读书社区web开发与高性能架构优化

To change this license header, choose License Headers in Project Properties.
To change this template file, choose Tools | Templates
and open the template in the editor.
*/

package datei.steuern;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.RandomAccessFile;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
*

@author s.watson
*/

public class FileTools {

public FileTools() {

}

/**

formatPath 转义文件目录
*
@param path
@return
*/

public static String formatPath(String path) {

return path.replaceAll("\\\\\\\\", "/");

}

/**

combainPath文件路径合并
*
@param eins
@param zwei
@return
*/

private static String combainPath(String eins, String zwei) {

String dori = "";
eins = null == eins ? "" : formatPath(eins);
zwei = null == zwei ? "" : formatPath(zwei);
if (!eins.endsWith("/") && zwei.indexOf("/") != 0) {
  dori = eins + "/" + zwei;
} else {
  dori = (eins + zwei).replaceAll("//", "/");
}
return dori;

}

/**

list2Array 列表转换数组
*
@param list
@return
*/

private static String[] list2Array(List list) {

String array[] = (String[]) list.toArray(new String[list.size()]);
return array;

}

/**

cp 复制文件
*
@param source
@param destination
@param loop
@return
*/

public static List<File> cp(String source, String destination, boolean loop) {

List<File> list = new ArrayList();
try {
  File srcFile = new File(source);
  File desFile = new File(destination);
  list.addAll(cp(srcFile, desFile, loop));
} catch (Exception ex) {
  j2log(null, null, ex);
}
return list;

}

/**

cp 复制文件
*
@param source
@param destination
@param loop
@return
*/

public static List<File> cp(File source, File destination, boolean loop) {

List<File> list = new ArrayList();
try {
  if (!source.exists() || source.isDirectory()) {
    throw new FileNotFoundException();
  }
  list.add(cp(source, destination));
  if (loop) {
    String[] subFile = source.list();
    for (String subPath : subFile) {
      String src = combainPath(source.getPath(), subPath);//子文件原文件路径
      String des = combainPath(destination.getPath(), subPath);//子文件目标路径
      File subfile = new File(src);
      if (subfile.isFile()) {
        list.add(cp(src, des));
      } else if (subfile.isDirectory() && loop) {
        list.addAll(cp(src, des, loop));
      }
    }
  }
} catch (Exception ex) {
  j2log(null, null, ex);
}
return list;

}

/**

cp 单文件复制文件
*
@param source
@param destination
@return
*/

public static File cp(String source, String destination) {

File desFile = null;
try {
  File srcFile = new File(source);
  desFile = new File(destination);
  desFile = cp(srcFile, desFile);
} catch (Exception ex) {
  j2log(null, null, ex);
}
return desFile;

}

/**

cp 单文件复制文件
*
@param source
@param destination
@return
*/

public static File cp(File source, File destination) {

FileInputStream in = null;
FileOutputStream out = null;
FileChannel inc = null;
FileChannel outc = null;
try {
  if (!source.exists() || source.isDirectory()) {
    throw new FileNotFoundException();
  }
  if (source.getPath().equals(destination.getPath())) {
    return source;
  }
  long allbytes = du(source, false);
  if (!destination.exists()) {
    destination.createNewFile();
  }
  in = new FileInputStream(source.getPath());
  out = new FileOutputStream(destination);
  inc = in.getChannel();
  outc = out.getChannel();
  ByteBuffer byteBuffer = null;
  long length = 2097152;//基本大小，默认2M
  long _2M = 2097152;
  while (inc.position() < inc.size()) {
    if (allbytes > (64 * length)) {//如果文件大小大于128M 缓存改为64M
      length = 32 * _2M;
    } else if (allbytes > (32 * length)) {//如果文件大小大于64M 缓存改为32M
      length = 16 * _2M;
    } else if (allbytes > (16 * length)) {//如果文件大小大于32M 缓存改为16M
      length = 8 * _2M;
    } else if (allbytes > (8 * length)) {//如果文件大小大于16M 缓存改为8M
      length = 4 * _2M;
    } else if (allbytes > (4 * length)) {//如果文件大小大于8M 缓存改为4M
      length = 2 * _2M;
    } else if (allbytes > (2 * length)) {//如果文件大小大于4M 缓存改为2M
      length = _2M;
    } else if (allbytes > (length)) {//如果文件大小大于2M 缓存改为1M
      length = _2M / 2;
    } else if (allbytes < length) {//如果文件小于基本大小，直接输出
      length = allbytes;
    }
    allbytes = inc.size() - inc.position();
    byteBuffer = ByteBuffer.allocateDirect((int) length);
    inc.read(byteBuffer);
    byteBuffer.flip();
    outc.write(byteBuffer);
    outc.force(false);
  }
} catch (Exception ex) {
  j2log(null, null, ex);
} finally {
  try {
    if (null != inc) {
      inc.close();
    }
    if (null != outc) {
      outc.close();
    }
    if (null != in) {
      in.close();
    }
    if (null != out) {
      out.close();
    }
  } catch (Exception ex) {
    j2log(null, null, ex);
  }
}
return destination;

}

/**

rename 文件重命名
*
@param filePath
@param from
@param to
@return
*/

public static File rename(String filePath, String from, String to) {

File newFile = null;
try {
  File oldFile = new File(combainPath(filePath, from));
  newFile = new File(combainPath(filePath, to));
  rename(newFile, oldFile);
} catch (Exception ex) {
  j2log(null, null, ex);
}
return newFile;

}

/**

rename 文件重命名
*
@param to
@param from
@return
*/

public static File rename(File from, File to) {

try {
  String newPath = to.getPath();
  String oldPath = from.getPath();
  if (!oldPath.equals(newPath)) {
    if (!to.exists()) {
      from.renameTo(to);
    }
  }
} catch (Exception ex) {
  j2log(null, null, ex);
}
return to;

}

/**

mv 移动文件
*
@param fileName
@param source
@param destination
@param cover
*/

public static void mv(String fileName, String source, String destination, boolean cover) {

try {
  if (!source.equals(destination)) {
    File oldFile = new File(combainPath(source, fileName));
    File newFile = new File(combainPath(destination, fileName));
    mv(oldFile, newFile, cover);
  }
} catch (Exception ex) {
  j2log(null, null, ex);
}

}

/**

mv 移动文件
*
@param source
@param destination
@param cover
*/

public static void mv(String source, String destination, boolean cover) {

try {
  if (!source.equals(destination)) {
    File oldFile = new File(source);
    File newFile = new File(destination);
    mv(oldFile, newFile, cover);
  }
} catch (Exception ex) {
  j2log(null, null, ex);
}

}

/**

mv 移动文件
*
@param source
@param destination
@param cover
*/

public static void mv(File source, File destination, boolean cover) {

try {
  if (!source.exists()) {
    throw new FileNotFoundException();
  }
  StringBuilder fileName = new StringBuilder(source.getName());
  if (!cover && source.getPath().equals(destination.getPath())) {
    if (fileName.indexOf(".") > 0) {
      fileName.insert(fileName.lastIndexOf("."), "_副本");
    } else {
      fileName.append("_副本");
    }
    cp(source, new File(combainPath(source.getParent(), fileName.toString())));
  } else {
    source.renameTo(destination);
  }
} catch (Exception ex) {
  j2log(null, null, ex);
}

}

/**

extensions 获取文件扩展名信息
*
@param filePath
@param fileName
@return
*/

private static String[] extensions(String filePath, String fileName) {

String[] extension = {};
try {
  String fullPath = combainPath(filePath, fileName);
  File file = new File(fullPath);
  extensions(file);
} catch (Exception ex) {
  j2log(null, null, ex);
}
return extension;

}

/**

extensions 获取文件扩展名信息
*
@param fullPath
@return
*/

private static String[] extensions(String fullPath) {

String[] extension = {};
try {
  File file = new File(fullPath);
  extensions(file);
} catch (Exception ex) {
  j2log(null, null, ex);
}
return extension;

}

/**

extensions 获取文件扩展名信息
*
@param file
@return
*/

private static String[] extensions(File file) {

String[] extension = {};
try {
  if (file.isFile()) {
    String fileName = file.getName();
    if (fileName.lastIndexOf(".") >= 0) {
      int lastIndex = fileName.lastIndexOf(".");
      extension[0] = String.valueOf(lastIndex);//扩展名的“.”的索引
      extension[1] = fileName.substring(lastIndex + 1);//扩展名
      extension[2] = fileName.substring(0, lastIndex);//文件名
    }
  }
} catch (Exception ex) {
  j2log(null, null, ex);
}
return extension;

}

/**

ls 遍历文件
*
@param filePath
@param loop
@return
*/

public static List<File> ls(String filePath, boolean loop) {

List<File> list = new ArrayList();
try {
  File file = new File(filePath);
  list.addAll(ls(file, loop));
} catch (Exception ex) {
  j2log(null, null, ex);
}
return list;

}

/**

ls 遍历文件
*
@param file
@param loop
@return
*/

public static List<File> ls(File file, boolean loop) {

List<File> list = new ArrayList();
try {
  list.add(file);
  if (!file.isDirectory()) {
    list.add(file);
  } else if (file.isDirectory()) {
    File[] subList = file.listFiles();
    subList = filesSort(subList, true);
    for (File subFile : subList) {
      if (subFile.isDirectory() && loop) {
        list.addAll(ls(subFile.getPath(), loop));
      } else {
        list.add(subFile);
      }
    }
  }
} catch (Exception ex) {
  j2log(null, null, ex);
}
return list;

}

/**

filesSort 文件排序（默认升序）
*
@param parentPath
@param subList
@return
*/

private static File[] filesSort(File[] inFiles, boolean asc) {

List<String> files = new ArrayList();
List<String> dirs = new ArrayList();
for (File subFile : inFiles) {
  if (subFile.isDirectory()) {
    dirs.add(subFile.getPath());
  } else if (subFile.isFile()) {
    files.add(subFile.getPath());
  }
}
String[] fileArray = {};
if (files.size() > 0) {
  fileArray = list2Array(files);
  Arrays.sort(fileArray);
  if (!asc) {
    Arrays.sort(fileArray, Collections.reverseOrder());
  }
}
String[] dirArray = {};
if (dirs.size() > 0) {
  dirArray = list2Array(dirs);
  Arrays.sort(dirArray);
  if (!asc) {
    Arrays.sort(dirArray, Collections.reverseOrder());
  }
}
return concat2FileArray(fileArray, dirArray);

}

/**

concat2FileArray 合并文件数组
*
@param old1
@param old2
@return
*/

private static File[] concat2FileArray(String[] old1, String[] old2) {

File[] newArray = new File[old1.length + old2.length];
for (int i = 0, n = old1.length; i < n; i++) {
  newArray[i] = new File(old1[i]);
}
for (int i = 0, j = old1.length, n = (old1.length + old2.length); j < n; i++, j++) {
  newArray[j] = new File(old2[i]);
}
return newArray;

}

/**

read 读取文本文件
*
@param filePath
@param fileName
@param charset
@return
*/

public static StringBuilder read(String filePath, String fileName, String charset) {

StringBuilder sb = new StringBuilder();
try {
  String fullPath = combainPath(filePath, fileName);
  File file = new File(fullPath);
  sb.append(FileTools.tail(file, false, 0, charset));
} catch (Exception ex) {
  j2log(null, null, ex);
}
return sb;

}

/**

read 读取文本文件
*
@param fullPath
@param charset
@return
*/

public static StringBuilder read(String fullPath, String charset) {

StringBuilder sb = new StringBuilder();
try {
  File file = new File(fullPath);
  sb.append(FileTools.tail(file, false, 0, charset));
} catch (Exception ex) {
  j2log(null, null, ex);
}
return sb;

}

/**

read 读取文本文件
*
@param file
@param charset
@return
*/

public static StringBuilder read(File file, String charset) {

StringBuilder sb = new StringBuilder();
try {
  sb.append(FileTools.tail(file, false, 0, charset));
} catch (Exception ex) {
  j2log(null, null, ex);
}
return sb;

}

/**

find 读取文本文件指定行
*
@param filePath
@param fileName
@param line
@param charset
@return
*/

public static StringBuilder find(String filePath, String fileName, int line, String charset) {

StringBuilder sb = new StringBuilder();
try {
  String fullPath = combainPath(filePath, fileName);
  File file = new File(fullPath);
  sb.append(FileTools.tail(file, true, line, charset));
} catch (Exception ex) {
  j2log(null, null, ex);
}
return sb;

}

/**

find 读取文本文件指定行
*
@param fullPath
@param line
@param charset
@return
*/

public static StringBuilder find(String fullPath, int line, String charset) {

StringBuilder sb = new StringBuilder();
try {
  File file = new File(fullPath);
  sb.append(FileTools.tail(file, true, line, charset));
} catch (Exception ex) {
  j2log(null, null, ex);
}
return sb;

}

/**

find 读取文本文件指定行
*
@param file
@param line
@param charset
@return
*/

public static StringBuilder find(File file, int line, String charset) {

StringBuilder sb = new StringBuilder();
try {
  sb.append(FileTools.tail(file, true, line, charset));
} catch (Exception ex) {
  j2log(null, null, ex);
}
return sb;

}

/**

tail 读取文本文件
*
@param filePath
@param fileName
@param charset
@param find
@param line
@return
*/

public static StringBuilder tail(String filePath, String fileName, boolean find, int line, String charset) {

StringBuilder sb = new StringBuilder();
try {
  String fullPath = combainPath(filePath, fileName);
  File file = new File(fullPath);
  sb.append(FileTools.tail(file, find, line, charset));
} catch (Exception ex) {
  j2log(null, null, ex);
}
return sb;

}

/**

tail 读取文本文件
*
@param fullPath
@param charset
@param find
@param line
@return
*/

public static StringBuilder tail(String fullPath, boolean find, int line, String charset) {

StringBuilder sb = new StringBuilder();
try {
  File file = new File(fullPath);
  sb.append(FileTools.tail(file, find, line, charset));
} catch (Exception ex) {
  j2log(null, null, ex);
}
return sb;

}

/**

tail 读取文本文件
*
@param file
@param charset
@param find
@param line
@return
*/

public static StringBuilder tail(File file, boolean find, int line, String charset) {

StringBuilder sb = new StringBuilder();
BufferedReader bufferReader = null;
if (null == charset || "".equals(charset)) {
  charset = "UTF-8";
}
try {
  if (!file.exists() || file.isDirectory()) {
    throw new FileNotFoundException();
  }
  String fullPath = file.getPath();
  bufferReader = new BufferedReader(new InputStreamReader(new FileInputStream(fullPath), charset));
  String temp;
  for (int i = 0; (temp = bufferReader.readLine()) != null; i++) {
    if (!find || line == i) {
      sb.append(temp);
    }
  }
} catch (Exception ex) {
  j2log(null, null, ex);
} finally {
  if (null != bufferReader) {
    try {
      bufferReader.close();
    } catch (IOException ex) {
      j2log(null, null, ex);
    }
  }
}
return sb;

}

/**

sed 读取文本文件
*
@param filePath
@param fileName
@param charset
@return
*/

public static List<String> sed(String filePath, String fileName, String charset) {

List<String> list = new ArrayList();
try {
  String fullPath = combainPath(filePath, fileName);
  File file = new File(fullPath);
  list.addAll(FileTools.sed(file, charset));
} catch (Exception ex) {
  j2log(null, null, ex);
}
return list;

}

/**

sed 读取文本文件
*
@param fullPath
@param charset
@return
*/

public static List<String> sed(String fullPath, String charset) {

List<String> list = new ArrayList();
try {
  File file = new File(fullPath);
  list.addAll(FileTools.sed(file, charset));
} catch (Exception ex) {
  j2log(null, null, ex);
}
return list;

}

/**

sed 读取文本文件
*
@param file
@param charset
@return
*/

public static List<String> sed(File file, String charset) {

List<String> list = new ArrayList();
BufferedReader bufferReader = null;
if (null == charset || "".equals(charset)) {
  charset = "UTF-8";
}
try {
  if (!file.exists() || file.isDirectory()) {
    throw new FileNotFoundException();
  }
  String fullPath = file.getPath();
  bufferReader = new BufferedReader(new InputStreamReader(new FileInputStream(fullPath), charset));
  String temp;
  for (int i = 0; (temp = bufferReader.readLine()) != null; i++) {
    list.add(temp);
  }
} catch (Exception ex) {
  j2log(null, null, ex);
} finally {
  if (null != bufferReader) {
    try {
      bufferReader.close();
    } catch (IOException ex) {
      j2log(null, null, ex);
    }
  }
}
return list;

}

/**

cat 读取文本文件
*
@param filePath
@param fileName
@return
*/

public static byte[] cat(String filePath, String fileName) {

byte[] output = {};
try {
  String fullPath = combainPath(filePath, fileName);
  File file = new File(fullPath);
  output = FileTools.cat(file);
} catch (Exception ex) {
  j2log(null, null, ex);
}
return output;

}

/**

cat 读取文本文件
*
@param fullPath
@return
*/

public static byte[] cat(String fullPath) {

byte[] output = {};
try {
  File file = new File(fullPath);
  output = FileTools.cat(file);
} catch (Exception ex) {
  j2log(null, null, ex);
}
return output;

}

/**

cat 读取文本文件
*
@param file
@return
*/

public static byte[] cat(File file) {

InputStream in = null;
byte[] output = {};
try {
  if (!file.exists() || file.isDirectory()) {
    throw new FileNotFoundException();
  }
  String fullPath = file.getPath();
  long length = du(file, false);
  long _2M = 2097152;
  byte[] bytes = new byte[(int) length];
  in = new FileInputStream(fullPath);
  for (int count = 0; count != -1;) {
    if (length > 16 * _2M) {
      length = 4 * _2M;
    } else if (length > 8 * _2M) {
      length = 2 * _2M;
    } else if (length > 4 * _2M) {
      length = _2M;
    } else if (length > 2 * _2M) {
      length = _2M / 2;
    } else if (length > _2M) {
      length = _2M / 4;
    } else {
      length = 4096;
    }
    bytes = new byte[(int) length];
    count = in.read(bytes);
    output = concatArray(bytes, output);
    length = in.available();
  }
} catch (Exception ex) {
  j2log(null, null, ex);
} finally {
  if (null != in) {
    try {
      in.close();
    } catch (Exception ex) {
      j2log(null, null, ex);
    }
  }
}
return output;

}

/**

合并数组
*
@param old1
@param old2
@return
*/

private static byte[] concatArray(byte[] old1, byte[] old2) {

byte[] newArray = new byte[old1.length + old2.length];
System.arraycopy(old1, 0, newArray, 0, old1.length);
System.arraycopy(old2, 0, newArray, old1.length, old2.length);
return newArray;

}

/**

dd 写入文件fullPath内容content
*
@param filePath
@param fileName
@param content
@param isAppend
*/

public static void dd(String filePath, String fileName, byte[] content, boolean isAppend) {

try {
  String fullPath = combainPath(filePath, fileName);
  File file = new File(fullPath);
  FileTools.dd(file, content, isAppend);
} catch (Exception ex) {
  j2log(null, null, ex);
}

}

/**

dd 写入文件fullPath内容content
*
@param fullPath
@param content
@param isAppend
*/

public static void dd(String fullPath, byte[] content, boolean isAppend) {

try {
  File file = new File(fullPath);
  FileTools.dd(file, content, isAppend);
} catch (Exception ex) {
  j2log(null, null, ex);
}

}

/**

dd 写入文件fullPath内容content
*
@param file
@param content
@param isAppend
*/

public static void dd(File file, byte[] content, boolean isAppend) {

FileOutputStream fileOutputStream = null;
try {
  if (!file.exists()) {
    file.createNewFile();
  }
  fileOutputStream = new FileOutputStream(file, isAppend);
  fileOutputStream.write(content);
} catch (Exception ex) {
  j2log(null, null, ex);
} finally {
  try {
    if (null != fileOutputStream) {
      fileOutputStream.close();
    }
  } catch (IOException ex) {
    j2log(null, null, ex);
  }
}

}

/**

write 写文件内容content到文件fullPath
*
@param filePath
@param fileName
@param content
*/

public static void write(String filePath, String fileName, String content) {

try {
  String fullPath = combainPath(filePath, fileName);
  File file = new File(fullPath);
  FileTools.write(file, content, true);
} catch (Exception ex) {
  j2log(null, null, ex);
}

}

/**

write 写文件内容content到文件fullPath
*
@param fullPath
@param content
*/

public static void write(String fullPath, String content) {

try {
  File file = new File(fullPath);
  FileTools.write(file, content, true);
} catch (Exception ex) {
  j2log(null, null, ex);
}

}

/**

write 写文件内容content到文件fullPath
*
@param file
@param content
*/

public static void write(File file, String content) {

try {
  FileTools.write(file, content, true);
} catch (Exception ex) {
  j2log(null, null, ex);
}

}

/**

write 写（追加）文件内容content到文件fullPath
*
@param filePath
@param fileName
@param content
@param isAppend
*/

public static void write(String filePath, String fileName, String content, boolean isAppend) {

try {
  String fullPath = combainPath(filePath, fileName);
  File file = new File(fullPath);
  FileTools.write(file, content, isAppend);
} catch (Exception ex) {
  j2log(null, null, ex);
}

}

/**

write 写（追加）文件内容content到文件fullPath
*
@param fullPath
@param content
@param isAppend
*/

public static void write(String fullPath, String content, boolean isAppend) {

try {
  File file = new File(fullPath);
  FileTools.write(file, content, isAppend);
} catch (Exception ex) {
  j2log(null, null, ex);
}

}

/**

write 写（追加）文件内容content到文件fullPath
*
@param file
@param content
@param isAppend
*/

public static void write(File file, String content, boolean isAppend) {

FileWriter fileWriter = null;
try {
  if (!file.exists()) {
    file.createNewFile();
  }
  fileWriter = new FileWriter(file.getPath(), isAppend);
  fileWriter.write(content);
} catch (Exception ex) {
  j2log(null, null, ex);
} finally {
  if (null != fileWriter) {
    try {
      fileWriter.close();
    } catch (IOException ex) {
      j2log(null, null, ex);
    }
  }
}

}

/**

tail 添加文件内容content到文件的index位置
*
@param filePath
@param fileName
@param content
@param index
*/

public static void tail(String filePath, String fileName, String content, long index) {

try {
  String fullPath = combainPath(filePath, fileName);
  File file = new File(fullPath);
  FileTools.tail(file, content, index);
} catch (Exception ex) {
  j2log(null, null, ex);
}

}

/**

tail 添加文件内容content到文件的index位置
*
@param fullPath
@param content
@param index
*/

public static void tail(String fullPath, String content, long index) {

try {
  File file = new File(fullPath);
  FileTools.tail(file, content, index);
} catch (Exception ex) {
  j2log(null, null, ex);
}

}

/**

tail 添加文件内容content到文件的index位置
*
@param file
@param content
@param index
*/

public static void tail(File file, String content, long index) {

RandomAccessFile randomAccessFile = null;
try {
  if (!file.exists()) {
    file.createNewFile();
  }
  randomAccessFile = new RandomAccessFile(file.getPath(), "rw");
  randomAccessFile.seek(index);
  randomAccessFile.writeBytes(content);
} catch (Exception ex) {
  j2log(null, null, ex);
} finally {
  if (null != randomAccessFile) {
    try {
      randomAccessFile.close();
    } catch (Exception ex) {
      j2log(null, null, ex);
    }
  }
}

}

/**

mkdir 创建目录
*
@param filePath
@param fileName
@return
*/

public static File mkdir(String filePath, String fileName) {

File file = null;
try {
  String fullPath = combainPath(filePath, fileName);
  file = new File(fullPath);
  file = mkdir(file);
} catch (Exception ex) {
  j2log(null, null, ex);
}
return file;

}

/**

mkdir 创建目录
*
@param fullPath
@return
*/

public static File mkdir(String fullPath) {

File file = null;
try {
  file = new File(fullPath);
  file = mkdir(file);
} catch (Exception ex) {
  j2log(null, null, ex);
}
return file;

}

/**

mkdir 创建目录
*
@param file
@return
*/

public static File mkdir(File file) {

try {
  if (!file.exists()) {
    file.mkdir();//如果文件夹不存在则创建
  }
} catch (Exception ex) {
  j2log(null, null, ex);
}
return file;

}

/**

touch 创建文件
*
@param filePath
@param fileName
*/

public static void touch(String filePath, String fileName) {

try {
  String fullPath = combainPath(filePath, fileName);
  File file = new File(fullPath);
  touch(file);
} catch (Exception ex) {
  j2log(null, null, ex);
}

}

/**

touch 创建文件
*
@param fullPath
*/

public static void touch(String fullPath) {

try {
  File file = new File(fullPath);
  touch(file);
} catch (Exception ex) {
  j2log(null, null, ex);
}

}

/**

touch 创建文件
*
@param file
*/

public static void touch(File file) {

try {
  if (!file.exists()) {
    file.createNewFile();//如果文件不存在则创建
  }
} catch (Exception ex) {
  j2log(null, null, ex);
}

}

/**

rm 删除文件
*
@param filePath
@param fileName
*/

public static void rm(String filePath, String fileName) {

try {
  String fullPath = combainPath(filePath, fileName);
  File file = new File(fullPath);
  rm(file);
} catch (Exception ex) {
  j2log(null, null, ex);
}

}

/**

rm 删除文件
*
@param fullPath
*/

public static void rm(String fullPath) {

try {
  File file = new File(fullPath);
  rm(file);
} catch (Exception ex) {
  j2log(null, null, ex);
}

}

/**

rm 删除文件
*
@param file
*/

public static void rm(File file) {

try {
  if (!file.exists()) {
    throw new FileNotFoundException();
  }
  if (file.isFile()) {
    file.delete();
  }
} catch (Exception ex) {
  j2log(null, null, ex);
}

}

/**

rmdir 删除目录
*
@param filePath
@param fileName
@param loop
*/

public static void rmdir(String filePath, String fileName, boolean loop) {

try {
  String fullPath = combainPath(filePath, fileName);
  File dir = new File(fullPath);
  rmdir(dir, loop);
} catch (Exception ex) {
  j2log(null, null, ex);
}

}

/**

rmdir 删除目录
*
@param fullPath
@param loop
*/

public static void rmdir(String fullPath, boolean loop) {

try {
  File dir = new File(fullPath);
  rmdir(dir, loop);
} catch (Exception ex) {
  j2log(null, null, ex);
}

}

/**

rmdir 删除目录
*
@param dir
@param loop
*/

public static void rmdir(File dir, boolean loop) {

try {
  if (!dir.exists()) {
    throw new FileNotFoundException();
  }
  if (dir.isDirectory()) {
    File[] files = dir.listFiles();
    int length = files.length;
    for (int i = 0; i < length && loop; i++) {
      if (files[i].isDirectory()) {
        rmdir(files[i], loop);
      } else {
        rm(files[i]);
      }
    }
    if (loop || length == 0) {
      dir.delete();
    }
  }
} catch (Exception ex) {
  j2log(null, null, ex);
}

}

/**

du 获取文件实际大小
*
@param filePath
@param fileName
@param loop
@return
*/

public static long du(String filePath, String fileName, boolean loop) {

long size = 0;
try {
  String fullPath = combainPath(filePath, fileName);
  File file = new File(fullPath);
  size = du(file, loop);
} catch (Exception ex) {
  j2log(null, null, ex);
}
return size;

}

/**

du 获取文件实际大小
*
@param filePath
@param fileName
@return
*/

public static long du(String filePath, String fileName) {

long size = 0;
try {
  String fullPath = combainPath(filePath, fileName);
  File file = new File(fullPath);
  size = du(file, false);
} catch (Exception ex) {
  j2log(null, null, ex);
}
return size;

}

/**

du 获取文件实际大小
*
@param fullPath
@return
*/

public static long du(String fullPath) {

long size = 0;
try {
  File file = new File(fullPath);
  size = du(file, false);
} catch (Exception ex) {
  j2log(null, null, ex);
}
return size;

}

/**

du 获取文件实际大小
*
@param file
@return
*/

public static long du(File file) {

long size = 0;
try {
  size = du(file, false);
} catch (Exception ex) {
  j2log(null, null, ex);
}
return size;

}

/**

du 获取文件实际大小
*
@param fullPath
@param loop
@return
*/

public static long du(String fullPath, boolean loop) {

long size = 0;
try {
  File file = new File(fullPath);
  size = du(file, loop);
} catch (Exception ex) {
  j2log(null, null, ex);
}
return size;

}

/**

du 获取文件实际大小
*
@param file
@param loop
@return
*/

public static long du(File file, boolean loop) {

FileChannel fileChannel = null;
long size = 0;
try {
  if (!file.exists()) {
    throw new FileNotFoundException();
  }
  if (file.isFile()) {
    FileInputStream fis = new FileInputStream(file);
    fileChannel = fis.getChannel();
    size = fileChannel.size();
  } else if (file.isDirectory()) {
    File[] files = file.listFiles();
    int length = files.length;
    for (int i = 0; i < length && loop; i++) {
      if (files[i].isDirectory()) {
        du(files[i], loop);
      } else {
        size += du(files[i], false);
      }
    }
  }
} catch (Exception ex) {
  j2log(null, null, ex);
} finally {
  if (null != fileChannel) {
    try {
      fileChannel.close();
    } catch (Exception ex) {
      j2log(null, null, ex);
    }
  }
}
return size;

}
}

以上是关于Go读书社区web开发与高性能架构优化的主要内容，如果未能解决你的问题，请参考以下文章

性能优化+架构迭代升级 Go读书社区web开发与架构优化（完整）微心：NoBug1024

Go语言性能剖析利器--pprof实战

《大型网站技术架构——核心原理与案例分析》读书笔记

《高性能MySQL》读书笔记

Go -- 今日头条架构

字节跳动 Go RPC 框架 KiteX 性能优化实践