java.lang.NoClassDefFoundError: org/springframework/core/io/buffer/DataBufferLimitException at org.springframework.http.codec.multipart.SynchronossPartHttpMessageReader$SynchronossPartGenerator.(SynchronossPartHttpMessageReader.java:193) at org.springframework.http.codec.multipart.SynchronossPartHttpMessageReader.read(SynchronossPartHttpMessageReader.java:168) at org.springframework.http.codec.multipart.MultipartHttpMessageReader.readMono(MultipartHttpMessageReader.java:102) at org.springframework.web.server.adapter.DefaultServerWebExchange.initMultipartData(DefaultServerWebExchange.java:169) at org.springframework.web.server.adapter.DefaultServerWebExchange.(DefaultServerWebExchange.java:132) at org.springframework.web.server.adapter.HttpWebHandlerAdapter.createExchange(HttpWebHandlerAdapter.java:243) at org.springframework.web.server.adapter.HttpWebHandlerAdapter.handle(HttpWebHandlerAdapter.java:229) at org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext$ServerManager.handle(ReactiveWebServerApplicationContext.java:213) at org.springframework.http.server.reactive.ReactorHttpHandlerAdapter.apply(ReactorHttpHandlerAdapter.java:65) at org.springframework.http.server.reactive.ReactorHttpHandlerAdapter.apply(ReactorHttpHandlerAdapter.java:40) at reactor.netty.http.server.HttpServerHandle.onStateChange(HttpServerHandle.java:63) at reactor.netty.tcp.TcpServerBind$ChildObserver.onStateChange(TcpServerBind.java:226) at reactor.netty.http.server.HttpServerOperations.onInboundNext(HttpServerOperations.java:434) at reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:141) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) at reactor.netty.http.server.HttpTrafficHandler.channelRead(HttpTrafficHandler.java:160) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:438) at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:323) at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:310) at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:426) at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:278) at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:253) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1434) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:965) at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:799) at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:433) at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:330) at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:897) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.ClassNotFoundException: org.springframework.core.io.buffer.DataBufferLimitException at java.net.URLClassLoader.findClass(URLClassLoader.java:382) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:93) at java.lang.ClassLoastrong textder.loadClass(ClassLoader.java:357) ... 39 common frames omitted strong text
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This error was reported in all places where files were uploaded – Linkey Mar 13 '20 at 05:52
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i hope no issues during compile time, but NoClassDefFoundError occured during runtime. https://docs.oracle.com/javase/7/docs/api/java/lang/NoClassDefFoundError.html. share your pom.xml might be dependency mismatch during runtime. – jose praveen Mar 13 '20 at 12:19