1、FileUtil

Former-commit-id: fd7dfe188a5165d44612f1bfa8073418be81679f

src/main/resources/modules/SpringBoot/java/frame/utils/FileUtil.java

@@ -1,9 +1,48 @@
 package ${basePackage}.frame.utils;
 
-import java.io.*;
+import java.io.BufferedReader;
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.FileReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.ArrayList;
+import java.util.List;
 
 public class FileUtil {
 
+    public static List<String> readFile2Lines(String fileName) {
+        List<String> returnString = new ArrayList<String>();
+        File file = new File(fileName);
+        BufferedReader reader = null;
+        try {
+            reader = new BufferedReader(new FileReader(file));
+            String tempString = null;
+            int line = 1;
+            // 一次读入一行，直到读入null为文件结束
+            while ((tempString = reader.readLine()) != null) {
+                // 显示行号
+                returnString.add(tempString);
+                line++;
+            }
+            reader.close();
+        } catch (IOException e) {
+            e.printStackTrace();
+        } finally {
+            if (reader != null) {
+                try {
+                    reader.close();
+                } catch (IOException e1) {
+                }
+            }
+        }
+        return returnString;
+    }
+
     public static String readFileToString(File file) throws IOException {
         byte[] bytes = readFileToByteArray(file);
         return new String(bytes, "UTF-8");
@@ -61,20 +100,20 @@ public class FileUtil {
     }
 
     public static byte[] toByteArray(InputStream input, int size) throws IOException {
-        if(size < 0) {
+        if (size < 0) {
             throw new IllegalArgumentException("Size must be equal or greater than zero: " + size);
-        } else if(size == 0) {
+        } else if (size == 0) {
             return new byte[0];
         } else {
             byte[] data = new byte[size];
 
             int offset;
             int read;
-            for(offset = 0; offset < size && (read = input.read(data, offset, size - offset)) != -1; offset += read) {
+            for (offset = 0; offset < size && (read = input.read(data, offset, size - offset)) != -1; offset += read) {
                 ;
             }
 
-            if(offset != size) {
+            if (offset != size) {
                 throw new IOException("Unexpected read size. current: " + offset + ", expected: " + size);
             } else {
                 return data;
@@ -116,6 +155,18 @@ public class FileUtil {
         return count > 2147483647L ? -1 : (int) count;
     }
 
+    public static boolean copy(File in, File out) throws Exception {
+        try {
+            FileInputStream input = new FileInputStream(in);
+            FileOutputStream output = new FileOutputStream(out);
+            copy(input, output);
+            input.close();
+            output.close();
+            return true;
+        } catch (IOException ie) {
+            return false;
+        }
+    }
 
     public static long copyLarge(InputStream input, OutputStream output) throws IOException {
         return copy(input, output, 4096);
@@ -134,4 +185,58 @@ public class FileUtil {
 
         return count;
     }
+
+    public static boolean clearDirectory(File dir) {
+        if ((dir == null) || !dir.isDirectory()) {
+            throw new IllegalArgumentException("Argument " + dir +
+                    " is not a directory. ");
+        }
+
+        File[] entries = dir.listFiles();
+        int sz = entries.length;
+
+        for (int i = 0; i < sz; i++) {
+            if (entries[i].isDirectory()) {
+                if (!clearDirectory(entries[i])) {
+                    return false;
+                }
+            } else {
+                if (!entries[i].delete()) {
+                    return false;
+                }
+            }
+        }
+
+        if (!dir.delete()) {
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * 将DOS/Windows格式的路径转换为UNIX/Linux格式的路径。
+     * 其实就是将路径中的"\"全部换为"/"，因为在某些情况下我们转换为这种方式比较方便，
+     * 某中程度上说"/"比"\"更适合作为路径分隔符，而且DOS/Windows也将它当作路径分隔符。
+     */
+    public static String toUNIXpath(String filePath) {
+        return filePath.replace('\\', '/');
+    }
+
+    public static void inputStream2File(InputStream is, File target) {
+        try {
+            if (!target.exists() && !target.createNewFile()) {
+                throw new RuntimeException(target.getName() + "not exists");
+            }
+            OutputStream outStream = new FileOutputStream(target);
+            byte[] buffer = new byte[8 * 1024];
+            int bytesRead;
+            while ((bytesRead = is.read(buffer)) != -1) {
+                outStream.write(buffer, 0, bytesRead);
+            }
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
 }