Java读取共享文件夹下面的文件(利用smb协议)

一、开启smb协议

1.1 控制面板->程序->启用或关闭window功能->smb1.0

二、设置共享文件

2.1 选择你想要共享的文件夹设置everyone或者指定的用户

授权给某个用户。需要密码

 

三、准备好对应的jar

百度云盘：https://pan.baidu.com/s/1TzAtUVRJl8_IcZCZ-JCO1w

提取码：sv6h

引入jar

四、代码

  1    /**
  2      * 读单个文件
  3      * */
  4     @PostMapping("/queryCard/getfile")
  5     public Response queryFile(@RequestBody String fileName) throws IOException {
  6         String ip = sysOptionService.getString("FileServerIpSetting").trim();
  7         String user = sysOptionService.getString("FileServerUserSetting").trim();
  8         String pass = sysOptionService.getString("FileServerPassSetting").trim();
  9         String path = sysOptionService.getString("FileServerPathSetting").trim();
 10         NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication(ip, user, pass);
 11         String filePath = getSmFileStr() +"/"+ fileName;
 12         log.info("获取共享服务器文件，路径为：" + filePath);
 13         SmbFile smbFile = new SmbFile(getSmFileStr() +"/"+ fileName, auth);
 14         BufferedReader reader = new BufferedReader(new InputStreamReader(new SmbFileInputStream(smbFile), StandardCharsets.UTF_8));//如果有中文乱码，换成gbk试试
 15         int tempchar = 0;
 16         while ((tempchar = reader.read()) != -1) {
 17             if (((char) tempchar) != '\r') {
 18                 System.err.print((char) tempchar);
 19             }
 20         }
 21         reader.close();
 22         return Response.success("ok");
 23     }
 24 
 25     /**
 26      * 读多个文件
 27      * */
 28     @PostMapping("/queryCard/getfiles")
 29     public Response getfiles(@RequestBody String fileName) throws IOException {
 30         String ip = sysOptionService.getString("FileServerIpSetting").trim();
 31         String user = sysOptionService.getString("FileServerUserSetting").trim();
 32         String pass = sysOptionService.getString("FileServerPassSetting").trim();
 33         String path = sysOptionService.getString("FileServerPathSetting").trim();
 34         NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication(ip, user, pass);
 35         String filePath = getSmFileStr() +"/"+ fileName;
 36         log.info("获取共享服务器多个文件，路径为：" + filePath);
 37         SmbFile smbFile = new SmbFile(getSmFileStr() +"/", auth);
 38         System.out.println("SMB files -" + smbFile.listFiles());
 39         return Response.success("ok");
 40     }
 41 
 42     /**
 43      * 删除文件
 44      * */
 45     @PostMapping("/queryCard/deletefile")
 46     public Response deletefile(@RequestBody String fileName) throws IOException {
 47         String ip = sysOptionService.getString("FileServerIpSetting").trim();
 48         String user = sysOptionService.getString("FileServerUserSetting").trim();
 49         String pass = sysOptionService.getString("FileServerPassSetting").trim();
 50         String path = sysOptionService.getString("FileServerPathSetting").trim();
 51         NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication(ip, user, pass);
 52         String filePath = getSmFileStr() +"/"+ fileName;
 53         log.info("删除共享服务器多个文件，路径为：" + filePath);
 54         SmbFile smbFile = new SmbFile(getSmFileStr() +"/"+ fileName, auth);
 55         if (smbFile != null){
 56             smbFile.delete();
 57         }
 58         return Response.success("ok");
 59     }
 60 
 61     /**
 62      * 存文件
 63      * */
 64     @PostMapping("/queryCard/savefile")
 65     public Response queryFile(@RequestParam("file") MultipartFile file) {
 66         InputStream in = null;
 67         OutputStream out = null;
 68         String ip = sysOptionService.getString("FileServerIpSetting").trim();
 69         String user = sysOptionService.getString("FileServerUserSetting").trim();
 70         String pass = sysOptionService.getString("FileServerPassSetting").trim();
 71         String path = sysOptionService.getString("FileServerPathSetting").trim();
 72         try {
 73             NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication(ip, user, pass);
 74             SmbFile checkRemotedir = new SmbFile(getSmFileStr(), auth);
 75             if (!checkRemotedir.exists()) {//路径不存在，新建文件夹
 76                 checkRemotedir.mkdirs();
 77             }
 78             File localFile = multipartFileToFile(file);
 79             String fileName = localFile.getName();
 80             String filePath = getSmFileStr() +"/"+ fileName;
 81             log.info("保存共享服务器文件，路径为：" + filePath);
 82             SmbFile remoteFile = new SmbFile(getSmFileStr()+ "/" + fileName, auth);
 83             in = new BufferedInputStream(new FileInputStream(localFile));
 84             out = new BufferedOutputStream(new SmbFileOutputStream(remoteFile));
 85             byte[] buffer = new byte[1024];
 86             while (in.read(buffer) != -1) {
 87                 out.write(buffer);
 88                 buffer = new byte[1024];
 89             }
 90             out.flush();
 91         } catch (Exception e) {
 92             e.printStackTrace();
 93         } finally {
 94             try {
 95                 out.close();
 96                 in.close();
 97             } catch (IOException e) {
 98                 e.printStackTrace();
 99             }
100         }
101         return Response.success("ok");
102     }
103 
104 
105     public static File multipartFileToFile(MultipartFile multiFile) {
106         // 获取文件名
107         String fileName = multiFile.getOriginalFilename();
108         // 获取文件后缀
109         String prefix = fileName.substring(fileName.lastIndexOf("."));
110         // 若须要防止生成的临时文件重复,能够在文件名后添加随机码
111         try {
112             File file = File.createTempFile(fileName, prefix);
113             multiFile.transferTo(file);
114             return file;
115         } catch (Exception e) {
116             e.printStackTrace();
117         }
118         return null;
119     }
120 
121     /**
122      * 获取smb文件url
123      * 按照年、月、日文件夹存取
124      * */
125     private String getSmFileStr(){
126         String ip = sysOptionService.getString("FileServerIpSetting").trim();
127         String user = sysOptionService.getString("FileServerUserSetting").trim();
128         String pass = sysOptionService.getString("FileServerPassSetting").trim();
129         String path = sysOptionService.getString("FileServerPathSetting").trim();
130         if (StringUtils.isEmpty(ip)){
131             throw  new AttachmentException("文件服务器IP不能为空，请联系管理员在系统设置中配置！");
132         }
133         if (StringUtils.isEmpty(user)){
134             throw  new AttachmentException("文件服务器用户不能为空，请联系管理员在系统设置中配置！");
135         }
136         if (StringUtils.isEmpty(pass)){
137             throw  new AttachmentException("文件服务器密码不能为空，请联系管理员在系统设置中配置！");
138         }
139         if (StringUtils.isEmpty(path)){
140             throw  new AttachmentException("文件服务器路径不能为空，请联系管理员在系统设置中配置！");
141         }
142         //创建远程文件对象  smb://用户名:密码@ip地址/共享的路径/...
143         String smFileStr = "smb://"+user+":"+pass+"@"+ip+path+"/"+getToYearDateStr()+"/"+getToMonthDateStr()+"/"+getToDayDateStr();
144         return smFileStr;
145     }
146 
147     /**
148      * 获取当天
149      * */
150     private String getToDayDateStr(){
151         SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
152         String str = sdf.format(new Date());
153         return str;
154     }
155 
156     /**
157      * 获取当月
158      * */
159     private String getToMonthDateStr(){
160         SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM");
161         String str = sdf.format(new Date());
162         return str;
163     }
164 
165     /**
166      * 获取当年
167      * */
168     private String getToYearDateStr(){
169         SimpleDateFormat sdf = new SimpleDateFormat("yyyy");
170         String str = sdf.format(new Date());
171         return str;
172     }

代码中涉及到四个参数(服务器ip、用户、密码、路径)，分别存在数据库中。方便后期维护，比如整体挪动文件夹。

五、测试

用postman测试，能成功

 

posted @ 2022-11-01 18:32  怡安  阅读(2062)  评论(0)  编辑  收藏  举报