org.csource.common.MyException: item “tracker_server“ in null not found异常已解决
2024-04-12 21:29:03
org.csource.common.MyException: item “tracker_server” in null not found异常已解决
背景
自己写的博客项目使用fastDfs 使用java工具类A初始化fdfs配置进行测试，代码如下
ClassPathResource cpr = new ClassPathResource("fastdfs.properties");ClientGlobal.init(cpr.getClassLoader().getResource("fdfs_client.conf").toURI().getPath());Properties properties = new Properties();// 使用ClassLoader加载properties配置文件生成对应的输入流InputStream in = cpr.getInputStream();// 使用properties对象加载输入流properties.load(in);ClientGlobal.initByProperties(properties);TrackerGroup trackerGroup = ClientGlobal.g_tracker_group;trackerClient = new TrackerClient(trackerGroup);
工具类B初始化fdfs配置进行测试，代码如下
private static final String CONF_FILENAME = Thread.currentThread().getContextClassLoader().getResource("fdfs_client.conf").getPath();--------------------------------------------ClientGlobal.init(CONF_FILENAME);
使用这两种方式都是去读取配置文件fdfs_client.conf，但是本地都正常，服务器上（CentOS7.6）不行，报错内容如下
java.lang.NullPointerExceptionat java.io.File.<init>(File.java:277)at org.csource.common.IniFileReader.loadFromOsFileSystemOrClasspathAsStream(IniFileReader.java:45)at org.csource.common.IniFileReader.loadFromFile(IniFileReader.java:150)at org.csource.common.IniFileReader.<init>(IniFileReader.java:30)at org.csource.fastdfs.ClientGlobal.init(ClientGlobal.java:91)at com.blog.utils.FastDFSClientUtils.<clinit>(FastDFSClientUtils.java:51)at com.blog.controller.FastDFSController.upload(FastDFSController.java:53)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:498)at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:197)at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:141)at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106)at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808)at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1064)at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963)at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)at javax.servlet.http.HttpServlet.service(HttpServlet.java:681)at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:387)at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357)at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382)at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893)at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1726)at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)at java.lang.Thread.run(Thread.java:748)
09:13:42,711 [http-nio-8000-exec-1] ERROR com.blog.utils.FastDFSClientUtils -
org.csource.common.MyException: item "tracker_server" in null not found
2021-11-24 21:13:42.712 INFO 2498 --- [nio-8000-exec-1] com.blog.controller.FastDFSController : ---文件类型--->jpg
09:13:42,714 [http-nio-8000-exec-1] ERROR com.blog.utils.FastDFSClientUtils - java.lang.NullPointerException
主要报错内容 org.csource.common.MyException: item “tracker_server” in null not found
解决办法
不使用读取配置文件的方法，直接把fdfs的配置写入工具类进行加载
代码如下
Properties props = new Properties();
props.put(ClientGlobal.PROP_KEY_TRACKER_SERVERS,"82.157.172.63:22122");
props.put(ClientGlobal.PROP_KEY_CONNECT_TIMEOUT_IN_SECONDS,3);
props.put(ClientGlobal.PROP_KEY_NETWORK_TIMEOUT_IN_SECONDS,30);
ClientGlobal.initByProperties(props);
TrackerClient trackerClient=new TrackerClient();
完成工具类代码
public class FastDFSClientUtils {private static Logger logger = Logger.getLogger(FastDFSClientUtils.class);private static TrackerClient trackerClient;//加载文件static {try {//加载fasetdfs配置项Properties props = new Properties();props.put(ClientGlobal.PROP_KEY_TRACKER_SERVERS,"82.157.172.63:22122");props.put(ClientGlobal.PROP_KEY_CONNECT_TIMEOUT_IN_SECONDS,3);props.put(ClientGlobal.PROP_KEY_NETWORK_TIMEOUT_IN_SECONDS,30);ClientGlobal.initByProperties(props);trackerClient=new TrackerClient();
// /*第二种init方法 该方法我测试本地可以，服务器上不行。各位如使用自行测试
// ClassPathResource cpr = new ClassPathResource("fastdfs.properties");
// ClientGlobal.init(cpr.getClassLoader().getResource("fdfs_client.conf").toURI().getPath());
//
// Properties properties = new Properties();
// // 使用ClassLoader加载properties配置文件生成对应的输入流
// InputStream in = cpr.getInputStream();
// // 使用properties对象加载输入流
// properties.load(in);
// ClientGlobal.initByProperties(properties);
//
// TrackerGroup trackerGroup = ClientGlobal.g_tracker_group;
// trackerClient = new TrackerClient(trackerGroup);
//
// System.out.println("------>"+trackerClient.getTrackerServer().getInetSocketAddress());} catch (Exception e) {logger.error(e);}}/*** <B>方法名称：</B>上传方法<BR>* <B>概要说明：</B><BR>* @param file 文件* @param path 路径* @return 上传成功返回id，失败返回null*/public static String upload(File file, String path) {TrackerServer trackerServer = null;StorageServer storageServer = null;StorageClient1 storageClient1 = null;FileInputStream fis = null;try {NameValuePair[] meta_list = null; // new NameValuePair[0];fis = new FileInputStream(file);byte[] file_buff = null;if (fis != null) {int len = fis.available();file_buff = new byte[len];fis.read(file_buff);}trackerServer = trackerClient.getTrackerServer();if (trackerServer == null) {logger.error("getConnection return null");}storageServer = trackerClient.getStoreStorage(trackerServer);storageClient1 = new StorageClient1(trackerServer, storageServer);String fileid = storageClient1.upload_file1(file_buff, getFileExt(path), meta_list);return fileid;} catch (Exception ex) {logger.error(ex);return null;} finally {if (fis != null) {try {fis.close();} catch (IOException e) {logger.error(e);}}storageClient1 = null;}}/*** <B>方法名称：</B>上传方法<BR>* <B>概要说明：</B><BR>* @param data 数据* @param extName 路径* @return 上传成功返回id，失败返回null*/public static String upload(byte[] data, String extName) {TrackerServer trackerServer = null;StorageServer storageServer = null;StorageClient1 storageClient1 = null;try {NameValuePair[] meta_list = null; // new NameValuePair[0];trackerServer = trackerClient.getTrackerServer();if (trackerServer == null) {logger.error("getConnection return null");}storageServer = trackerClient.getStoreStorage(trackerServer);storageClient1 = new StorageClient1(trackerServer, storageServer);String fileid = storageClient1.upload_file1(data, extName, meta_list);return fileid;} catch (Exception ex) {logger.error(ex);return null;} finally {storageClient1 = null;}}/*** <B>方法名称：</B>下载方法<BR>* <B>概要说明：</B>通过文件id进行下载<BR>* @param fileId 文件id* @return 返回InputStream*/public static InputStream download(String groupName, String fileId) {TrackerServer trackerServer = null;StorageServer storageServer = null;StorageClient1 storageClient1 = null;try {trackerServer = trackerClient.getTrackerServer();if (trackerServer == null) {logger.error("getConnection return null");}storageServer = trackerClient.getStoreStorage(trackerServer, groupName);storageClient1 = new StorageClient1(trackerServer, storageServer);byte[] bytes = storageClient1.download_file1(fileId);InputStream inputStream = new ByteArrayInputStream(bytes);return inputStream;} catch (Exception ex) {logger.error(ex);return null;} finally {storageClient1 = null;}}/*** <B>方法名称：</B>删除方法<BR>* <B>概要说明：</B>根据id来删除一个文件<BR>* @param fileId 文件id* @return 删除成功返回0，非0则操作失败，返回错误代码*/public static int delete(String groupName, String fileId) {TrackerServer trackerServer = null;StorageServer storageServer = null;StorageClient1 storageClient1 = null;try {trackerServer = trackerClient.getTrackerServer();if (trackerServer == null) {logger.error("getConnection return null");}storageServer = trackerClient.getStoreStorage(trackerServer, groupName);storageClient1 = new StorageClient1(trackerServer, storageServer);int result = storageClient1.delete_file1(fileId);return result;} catch (Exception ex) {logger.error(ex);return 0;} finally {storageClient1 = null;}}/*** <B>方法名称：</B><BR>* <B>概要说明：</B><BR>* @param oldFileId 旧文件id* @param file 新文件* @param path 新文件路径* @return 上传成功返回id，失败返回null*//*public static String modify(String oldGroupName, String oldFileId, File file, String path) {String fileid = null;try {// 先上传fileid = upload(file, path);if (fileid == null) {return null;}// 再删除int delResult = delete(oldGroupName, oldFileId);if (delResult != 0) {return null;}} catch (Exception ex) {logger.error(ex);return null;}return fileid;}*//*** <B>方法名称：</B>获取文件后缀名<BR>* <B>概要说明：</B>获取文件后缀名<BR>* @param fileName* @return 如："jpg"、"txt"、"zip" 等*/private static String getFileExt(String fileName) {if (StringUtils.isBlank(fileName) || !fileName.contains(".")) {return "";} else {return fileName.substring(fileName.lastIndexOf(".") + 1);}}/*** MultipartFile 转 File** @param file* @throws Exception*/public static File multipartFileToFile(MultipartFile file) throws Exception {File toFile = null;if ("".equals(file) || file.getSize() <= 0) {file = null;} else {InputStream ins = null;ins = file.getInputStream();toFile = new File(file.getOriginalFilename());inputStreamToFile(ins, toFile);ins.close();}return toFile;}//获取流文件public static void inputStreamToFile(InputStream ins, File file) {try {OutputStream os = new FileOutputStream(file);int bytesRead = 0;byte[] buffer = new byte[8192];while ((bytesRead = ins.read(buffer, 0, 8192)) != -1) {os.write(buffer, 0, bytesRead);}os.close();ins.close();} catch (Exception e) {e.printStackTrace();}}/*** 删除本地临时文件* @param file*/public static void delteTempFile(File file) {if (file != null) {File del = new File(file.toURI());del.delete();}}public static void downloadPicture(String urlList, String imgUrl) {URL url = null;int imageNumber = 0;try {url = new URL(urlList);DataInputStream dataInputStream = new DataInputStream(url.openStream());String imageName = imgUrl;FileOutputStream fileOutputStream = new FileOutputStream(new File(imageName));ByteArrayOutputStream output = new ByteArrayOutputStream();byte[] buffer = new byte[1024];int length;while ((length = dataInputStream.read(buffer)) > 0) {output.write(buffer, 0, length);}byte[] context = output.toByteArray();fileOutputStream.write(output.toByteArray());dataInputStream.close();fileOutputStream.close();} catch (MalformedURLException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}
}
至此，两天没解决的问题告一段落！
记录一下备忘！！！
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