1.项目前端APP报错说是图片传不上, APP用原生安卓写的, 我还没学呢, 并且因为项目比较老, 所以我要去直接运行项目的话也不大可能了, 所以先看了一下错误类型, 他报了个500错误, 这个很明显就是服务端错误了, 我只需要找到为什么服务端报错就行了, 请求上传文件的路径我是通过wireshark直接得到的, 由于是内网, 并没有加ssl这些东西, 所以可以直接看到请求路径, 参数这些, 有了路径就可以去找对应服务器了, 找到服务器, 找到tomcat下面的webapps, 然后找到项目, 先看一下有没有日志配置, 发现日志配置都是很简略的, 也就是说都是生产环境专用的, 控制台本身没有打印日志信息, 那我先导入日志文件, 他用的log4j.properties, 然后重启tomcat, 重新通过app打印错误, 发现报了以下错误:
2022-03-09 09:38:11,687 [http-bio-8081-exec-4] DEBUG [org.springframework.web.servlet.DispatcherServlet] - Could not complete request
org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is java.lang.NoSuchMethodError: org.apache.commons.io.FileUtils
.moveFile(Ljava/io/File;Ljava/io/File;)V
at org.springframework.web.servlet.DispatcherServlet.triggerAfterCompletionWithError(DispatcherServlet.java:1260)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:939)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:851)
at org.springframework.web.servlet.frameworkServlet.processRequest(frameworkServlet.java:953)
at org.springframework.web.servlet.frameworkServlet.doPost(frameworkServlet.java:855)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:650)
at org.springframework.web.servlet.frameworkServlet.service(frameworkServlet.java:829)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.springframework.orm.hibernate4.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:151)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:106)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)
at org.apache.catalina.authenticator.Authenticatorbase.invoke(Authenticatorbase.java:494)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:1025)
at org.apache.catalina.core.StandardEnginevalve.invoke(StandardEnginevalve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1137)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:722)
这样就可以看到了是因为 java.lang.NoSuchMethodError: org.apache.commons.io.FileUtils
.moveFile, 也就是说是对应jar包不对, 还有一个就是根据错误提示, 我找到了对应的源代码, 然后使用postman进行测试, 发现确实报同样的错误, 于是开启了找包之路..., 由于项目比较久, 所以只能找jdk1.5和jdk1.6版本的org.apache.commons.io, 找到了org.apache.commons.io-2.2.jar, 导入测试, 发现还是相同的错误, 经过重排, 发现项目有个旧文件, 名为commons-io-1.3.2.jar, 我觉得可能是因为导入旧文件导致的错误, 遂删除该文件, 再测试上传, 项目正常了
