为fastdfs工具类添加注释

2018-05-17 18:01:03 +08:00
parent 5ecb09dd0f
commit d825c96145
5 changed files with 45 additions and 32 deletions
--- a/src/main/java/com/nis/web/controller/restful/FastDFSController.java
+++ b/src/main/java/com/nis/web/controller/restful/FastDFSController.java
@@ -43,7 +43,7 @@ public class FastDFSController {
 		String groupName=filePath.substring(0,filePath.indexOf("/"));
 		filePath=filePath.substring(filePath.indexOf("/")+1);
 		Integer a = FileManager.delete_file(groupName, filePath);
-		System.out.println(a);
+		//System.out.println(a);
 	}

 	public String testAdd() {
@@ -56,7 +56,7 @@ public class FastDFSController {
 		meta_list[1] = new NameValuePair("fileLength", String.valueOf(file.length()));
 		meta_list[2] = new NameValuePair("fileExt", ext);
 		meta_list[3] = new NameValuePair("fileAuthor", "rkg");
-		String successFilePath = FileManager.upload(new FastDFSFile(getByte(file), ext), null);
+		String successFilePath = FileManager.upload(new FastDFSFile(getByte(file),fileName, ext), meta_list);
 		System.out.println("上传成功返回的路径是" + successFilePath);
 		return successFilePath;
 	}
@@ -80,7 +80,7 @@ public class FastDFSController {
 	public String add(MultipartFile attach, HttpServletRequest request) throws IOException, MyException {
 		// 获取文件后缀名
 		String ext = attach.getOriginalFilename().substring(attach.getOriginalFilename().lastIndexOf(".") + 1);
-		FastDFSFile file = new FastDFSFile(attach.getBytes(), ext);
+		FastDFSFile file = new FastDFSFile(attach.getBytes(),attach.getOriginalFilename(), ext);
 		NameValuePair[] meta_list = new NameValuePair[4];
 		meta_list[0] = new NameValuePair("fileName", attach.getOriginalFilename());
 		meta_list[1] = new NameValuePair("fileLength", String.valueOf(attach.getSize()));
--- a/src/main/java/com/nis/web/service/fdfs/FastDFSFile.java
+++ b/src/main/java/com/nis/web/service/fdfs/FastDFSFile.java
@@ -2,7 +2,7 @@ package com.nis.web.service.fdfs;

 /**
 * <p>Title: FastDFSFile.java</p>
- * <p>Description: </p>
+ * <p>Description: file对象</p>
 * <p>Company: IIE</p>
 * @author rkg
 * @date 2018年5月16日
@@ -18,11 +18,22 @@ public class FastDFSFile extends FileManagerConfig {
 	private String length;
 	private String author = FILE_DEFAULT_AUTHOR;

-	public FastDFSFile(byte[] content, String ext) {
-		this.content = content;
-		this.ext = ext;
-	}
+	/**
+	 * 根据byte数组和文件后缀构建FastDFSFile对象
+	 * @param content 文件转化为byte
+	 * @param ext 文件后缀名
+	 */
+//	public FastDFSFile(byte[] content, String ext) {
+//		this.content = content;
+//		this.ext = ext;
+//	}

+	/**
+	 * 根据byte数组和文件后缀构建FastDFSFile对象
+	 * @param content 文件转化为byte
+	 * @param name 文件名称
+	 * @param ext 文件后缀名
+	 */
 	public FastDFSFile(byte[] content, String name, String ext) {
 		this.content = content;
 		this.name = name;
--- a/src/main/java/com/nis/web/service/fdfs/FileManager.java
+++ b/src/main/java/com/nis/web/service/fdfs/FileManager.java
@@ -8,6 +8,8 @@ import org.csource.fastdfs.StorageClient;
 import org.csource.fastdfs.StorageServer;
 import org.csource.fastdfs.TrackerClient;
 import org.csource.fastdfs.TrackerServer;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
@@ -15,7 +17,7 @@ import org.springframework.http.ResponseEntity;

 /**
 * <p>Title: FileManager.java</p>
- * <p>Description: </p>
+// * <p>Description: 上传文件到fdfs的工具类</p>
 * <p>Company: IIE</p>
 * @author rkg
 * @date 2018年5月16日
@@ -25,6 +27,7 @@ import org.springframework.http.ResponseEntity;
 public class FileManager extends FileManagerConfig {

 	private static final long serialVersionUID = 1L;
+	private static Logger logger = LoggerFactory.getLogger(FileManager.class);
 	private static TrackerClient trackerClient;
 	private static TrackerServer trackerServer;
 	private static StorageServer storageServer;
@@ -39,15 +42,15 @@ public class FileManager extends FileManagerConfig {
 			trackerServer = trackerClient.getConnection();
 			storageClient = new StorageClient(trackerServer, storageServer);
 		} catch (Exception e) {
-			e.printStackTrace();
+			logger.error("创建tracker|storage失败,请检查配置文件或fdfs服务,nginx服务是否正常", e);
 		}
 	}

 	/**
 	 * 向fastdfs上传文件
-	 * @param file
-	 * @param valuePairs
-	 * @return
+	 * @param file 文件对象
+	 * @param valuePairs 设置meta信息,这个可以为空,设置了好像也没有什么用
+	 * @return 返回文件在fdfs上的http访问地址(可直接在浏览器下载),null代表上传失败
 	 */
 	public static String upload(FastDFSFile file, NameValuePair[] valuePairs) {
 		String[] uploadResults = null;
@@ -55,24 +58,24 @@ public class FileManager extends FileManagerConfig {
 			// uploadResults = storageClient.upload_file(file.getContent(), file.getExt(),
 			// valuePairs);
 			uploadResults = storageClient.upload_file(file.getContent(), file.getExt(), valuePairs);
-		} catch (Exception e) {
-			e.printStackTrace();
-		}
-		String groupName = uploadResults[0];
-		String remoteFileName = uploadResults[1];
-
+			String groupName = uploadResults[0];// group名称:group1|group2...
+			String remoteFileName = uploadResults[1];// 文件路径:M00/00/01/CgAGwFr9LTiAEoSaAADz3NN2rlY365.jpg
 			String fileAbsolutePath = PROTOCOL + TRACKER_NGNIX_ADDR
 			// + trackerServer.getInetSocketAddress().getHostName()
 			// + SEPARATOR + TRACKER_NGNIX_PORT
 					+ SEPARATOR + groupName + SEPARATOR + remoteFileName;
 			return fileAbsolutePath;
+		} catch (Exception e) {
+			logger.error("上传文件{}到fastfds服务器失败,请检查配置文件或fdfs服务,nginx服务是否正常", file.getName(), e);
+		}
+		return null;
 	}

 	/**
 	 * 从fastdfs下载文件
-	 * @param groupName
-	 * @param remoteFileName
-	 * @param specFileName
+	 * @param groupName 文件所属组:group1
+	 * @param remoteFileName 文件路径:M00/00/01/CgAGwFr9LriANfj6AADz3NN2rlY448.jpg
+	 * @param specFileName 重命名文件:对CgAGwFr9LriANfj6AADz3NN2rlY448.jpg重命名,例如重命名为:1.jpg
 	 * @return 
 	 */
 	public static ResponseEntity<byte[]> download(String groupName, String remoteFileName, String specFileName) {
@@ -84,8 +87,7 @@ public class FileManager extends FileManagerConfig {
 					new String(specFileName.getBytes("UTF-8"), "iso-8859-1"));
 			headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);
 		} catch (Exception e) {
-			// TODO Auto-generated catch block
-			e.printStackTrace();
+			logger.error("从fastfds服务器下载文件{}失败,请检查配置文件或fdfs服务,nginx服务是否正常", remoteFileName, e);
 		}
 		return new ResponseEntity<byte[]>(content, headers, HttpStatus.CREATED);
 	}
@@ -101,7 +103,7 @@ public class FileManager extends FileManagerConfig {
 		try {
 			result = storageClient.delete_file(group, filePath);
 		} catch (Exception e) {
-			e.printStackTrace();
+			logger.error("删除文件:{}失败,所属组:{},请检查配置文件或fdfs服务,nginx服务是否正常", filePath, group, e);
 		}
 		return result;
 	}
--- a/src/main/java/com/nis/web/service/fdfs/FileManagerConfig.java
+++ b/src/main/java/com/nis/web/service/fdfs/FileManagerConfig.java
@@ -15,12 +15,12 @@ public class FileManagerConfig implements Serializable {

 	private static final long serialVersionUID = 1L;

-	public static final String FILE_DEFAULT_AUTHOR = "renkaige";
+	public static final String FILE_DEFAULT_AUTHOR = "iie-rkg";

 	public static final String PROTOCOL = "http://";

 	public static final String SEPARATOR = "/";
-
+	// fdfs-tracker-nginx服务器
 	public static final String TRACKER_NGNIX_ADDR = "10.0.6.192";

 	public static final String TRACKER_NGNIX_PORT = "";
--- a/src/main/resources/applicationContext-redis.xml
+++ b/src/main/resources/applicationContext-redis.xml
@@ -15,7 +15,7 @@
 		http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.1.xsd
 		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.1.xsd"
 	default-lazy-init="true">
-	<!-- 加载配置文件 -->
+	<!-- 加载配置文件,不知道为啥不能加载redis.properties的内容,先把redis.properties里面的内容放到jdbc.properties里面吧 -->
 	<context:property-placeholder
 		ignore-unresolvable="true" location="classpath:jdbc.properties" />