文件上传拒绝访问报错

严重: Servlet.service() for servlet [UploadServlet] in context with path [/FileUpload] threw exception
java.io.FileNotFoundException: C:\apache-tomcat-7.0.50\webapps\FileUpload\upload (拒绝访问。)
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.<init>(FileOutputStream.java:179)
at java.io.FileOutputStream.<init>(FileOutputStream.java:70)
at com.wen.decorator.MultipartWrapper.setParams(MultipartWrapper.java:47)
at com.wen.decorator.MultipartWrapper.<init>(MultipartWrapper.java:28)
at com.wen.action.UploadServlet.fileUpload(UploadServlet.java:79)
at com.wen.action.UploadServlet.doPost(UploadServlet.java:69)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:409)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1044)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2441)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2430)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)

at java.lang.Thread.run(Thread.java:619)

1、问题原因

这种情况是因为在创建输出流的时候，只写了文件的路径，如果要实现上传则必须是文件的路径；才能正常上传；如果有遇到类似的情况请看下自己的路径是否正确；

2、补充

网上看了有类似的错误；但是和我的情况不同；网上有朋友是文件能正常上传；但是报错；这种情况一般和电脑文件夹权限有问题；也可以使用try...catch也能完成；不报错就ok；