com.jcraft.jsch.SftpException:

报错日志:

com.jcraft.jsch.SftpException: 
	at com.jcraft.jsch.ChannelSftp.ls(ChannelSftp.java:1647)
	at com.jcraft.jsch.ChannelSftp.ls(ChannelSftp.java:1553)
	at com.hare.tree.utils.SftpUtil.listFile(SftpUtil.java:343)
	at com.hare.tree.utils.SftpUtil.download(SftpUtil.java:221)
	at com.hare.tree.service.impl.LoanServiceImpl.downloadAndStore(LoanServiceImpl.java:428)
	at com.hare.tree.service.impl.LoanServiceImpl.download(LoanServiceImpl.java:192)
	at com.hare.tree.service.impl.LoanServiceImpl$$FastClassBySpringCGLIB$$43f0c1eb.invoke(<generated>)
	at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:771)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749)
	at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:367)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:118)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749)
	at org.springframework.aop.interceptor.AsyncExecutionInterceptor.lambda$invoke$0(AsyncExecutionInterceptor.java:115)
	at org.apache.skywalking.apm.plugin.spring.async.SWCallable.call(SWCallable.java:47)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

背景:

同时多次调用连接三方的sftp文件服务器,但是调用的工具类是单线程的,所有异步调用时报错,

解决方案:

调用时,用单线程去调用,让后面的请求阻塞到那里

附:

也会是其他问题:

1.你电脑的IP没有在对方的白名单类,所以一直请求不通导致报错

2.或者是你已经在白名单类,但是你的密码错误,也会报错