重构 FastDFSFile。

plusone-basic/plusone-basic-infrastructure/src/main/java/xyz/zhouxy/plusone/oss/FastDFSUtil.java

@@ -1,8 +1,17 @@
 package xyz.zhouxy.plusone.oss;
 
 import java.io.ByteArrayInputStream;
+import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
+import java.math.BigInteger;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.util.Arrays;
+import java.util.Objects;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
 
 import org.csource.common.MyException;
 import org.csource.common.NameValuePair;
@@ -14,7 +23,10 @@ import org.csource.fastdfs.TrackerServer;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import com.google.common.io.Files;
+
 import lombok.Getter;
+import xyz.zhouxy.plusone.exception.SysException;
 
 public class FastDFSUtil {
 
@@ -44,7 +56,7 @@ public class FastDFSUtil {
      * @throws FastDFSException
      */
     public String[] upload(FastDFSFile file) throws FastDFSException {
-        logger.info("File Name: {}, File Length: {}", file.getName(), file.getContent().length);
+        logger.info("File Name: {}, File Length: {}", file.getFileName(), file.getContent().length);
 
         NameValuePair[] metaList = new NameValuePair[1];
         metaList[0] = new NameValuePair("author", file.getAuthor());
@@ -63,7 +75,7 @@ public class FastDFSUtil {
                     uploadResults[0], uploadResults[1], System.currentTimeMillis() - startTime);
 
         } catch (IOException e) {
-            throw new FastDFSException("IO Exception when uploadind the file:" + file.getName(), e);
+            throw new FastDFSException("IO Exception when uploadind the file:" + file.getFileName(), e);
         } catch (MyException e) {
             throw new FastDFSException(e);
         }
@@ -109,18 +121,68 @@ public class FastDFSUtil {
         }
     }
 
-    @Getter
     public static final class FastDFSFile {
-        private String name;
-        private byte[] content;
-        private String ext;
-        private String md5;
-        private String author;
+        @Getter
+        private final String fileName;
+        private final byte[] content;
+        @Getter
+        private final String ext;
+        @Getter
+        private final String md5;
+        @Getter
+        private final String author;
 
-        public FastDFSFile(String name, byte[] content, String ext) {
-            this.name = name;
+        private FastDFSFile(@Nonnull File file, @Nullable String author) throws IOException {
+            this.fileName = file.getName();
+            this.content = Files.toByteArray(file);
+            this.ext = Files.getFileExtension(fileName);
+            this.md5 = md5Hex(content);
+            this.author = author;
+        }
+
+        private FastDFSFile(@Nonnull String fileName, @Nonnull byte[] content, @Nullable String author) {
+            this.fileName = fileName;
             this.content = content;
-            this.ext = ext;
+            this.ext = Files.getFileExtension(fileName);
+            this.md5 = md5Hex(content);
+            this.author = author;
+        }
+
+        @Nonnull
+        public static FastDFSFile of(@Nonnull File file) throws IOException {
+            return new FastDFSFile(file, null);
+        }
+
+        @Nonnull
+        public static FastDFSFile of(@Nonnull File file, @Nullable String author) throws IOException {
+            return new FastDFSFile(file, author);
+        }
+
+        @Nonnull
+        public static FastDFSFile of(@Nonnull String fileName, @Nonnull byte[] content) {
+            return new FastDFSFile(fileName, content, null);
+        }
+
+        @Nonnull
+        public static FastDFSFile of(@Nonnull String fileName, @Nonnull byte[] content, @Nullable String author) {
+            return new FastDFSFile(fileName, content, author);
+        }
+
+        public byte[] getContent() {
+            return Arrays.copyOf(content, content.length);
+        }
+
+        @Nonnull
+        private static String md5Hex(byte[] data) {
+            try {
+                MessageDigest messageDigest = MessageDigest.getInstance("MD5");
+                messageDigest.update(data);
+                byte[] result = messageDigest.digest();
+                var sha512Hex = new BigInteger(1, result).toString(16);
+                return Objects.requireNonNull(sha512Hex);
+            } catch (NoSuchAlgorithmException e) {
+                throw new SysException(e);
+            }
         }
     }
 }

plusone-start/src/test/java/xyz/zhouxy/plusone/FastDFSTests.java

@@ -1,12 +1,11 @@
 package xyz.zhouxy.plusone;
 
-import java.io.FileInputStream;
+import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 
 import javax.annotation.Resource;
 
-import org.apache.commons.io.IOUtils;
 import org.junit.jupiter.api.Test;
 import org.springframework.boot.test.context.SpringBootTest;
 
@@ -24,10 +23,7 @@ class FastDFSTests {
 
     @Test
     void testOSS() throws FileNotFoundException, IOException, FastDFSException {
-        try (FileInputStream in = new FileInputStream("D:\\ZhouXY\\Desktop\\666.png");) {
-            byte[] content = IOUtils.toByteArray(in);
-            String[] upload = fastDFSUtil.upload(new FastDFSFile("666.png", content, "png"));
+        String[] upload = fastDFSUtil.upload(FastDFSFile.of(new File("D:\\ZhouXY\\Desktop\\666.png")));
         log.info(String.join("/", upload));
     }
 }
-}