java – 尝试写入文件时拒绝Tomcat权限
发布时间：2020-12-15 04:32:28 所属栏目：Java 来源：网络整理
导读：我想通过tomcat服务器发送一个zip.但是当我尝试访问 http://localhost:8094/fetna-project-rest/webapi/retdoc/10时,我收到了一个权限错误,我将其包含在底部.我在ubuntu上运行服务器.你能帮我么？我的源代码在这里： public static void addToZipFile(String
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我想通过tomcat服务器发送一个zip.但是当我尝试访问
http://localhost:8094/fetna-project-rest/webapi/retdoc/10时,我收到了一个权限错误,我将其包含在底部.我在ubuntu上运行服务器.你能帮我么？我的源代码在这里：
public static void addToZipFile(String fileName,ZipOutputStream zos) throws FileNotFoundException,IOException {
System.out.println("Writing '" + fileName + "' to zip file");
File file = new File(fileName);
if (!file.exists()) {
file.createNewFile();
}
FileInputStream fis;
fis = new FileInputStream(file);
ZipEntry zipEntry = new ZipEntry(fileName);
zos.putNextEntry(zipEntry);
byte[] bytes = new byte[1024];
int length;
while ((length = fis.read(bytes)) >= 0) {
zos.write(bytes,length);
}
zos.closeEntry();
fis.close();
}
@GET
@Path("retdoc/{id}")
@Produces(MediaType.APPLICATION_OCTET_STREAM)
public Response retrieveDocument(@PathParam("id") String ID) throws IOException {
FileOutputStream fos = new FileOutputStream("test.zip");
ZipOutputStream zos = new ZipOutputStream(fos);
String file1Name = "test.txt";
addToZipFile(file1Name,zos);
zos.close();
fos.close();
File zippedFile = new File("test.zip");
return Response.ok(FileUtils.readFileToByteArray(zippedFile))
.type("application/zip")
.header("Content-Disposition","attachment; filename="retrievedDocuments.zip"")
.build();
}
和我的堆栈跟踪： message org.glassfish.jersey.server.ContainerException: java.io.FileNotFoundException: test.zip (Permission denied)
description The server encountered an internal error that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: org.glassfish.jersey.server.ContainerException: java.io.FileNotFoundException: test.zip (Permission denied)
org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:487)
org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:425)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:383)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:336)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:223)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
org.glassfish.jersey.server.ContainerException: java.io.FileNotFoundException: test.zip (Permission denied)
org.glassfish.jersey.servlet.internal.ResponseWriter.rethrow(ResponseWriter.java:278)
org.glassfish.jersey.servlet.internal.ResponseWriter.failure(ResponseWriter.java:260)
org.glassfish.jersey.server.ServerRuntime$Responder.process(ServerRuntime.java:509)
org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:334)
org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
org.glassfish.jersey.internal.Errors.process(Errors.java:315)
org.glassfish.jersey.internal.Errors.process(Errors.java:297)
org.glassfish.jersey.internal.Errors.process(Errors.java:267)
org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305)
org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154)
org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:471)
org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:425)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:383)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:336)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:223)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
java.io.FileNotFoundException: test.zip (Permission denied)
java.io.FileOutputStream.open(Native Method)
java.io.FileOutputStream.<init>(FileOutputStream.java:221)
java.io.FileOutputStream.<init>(FileOutputStream.java:110)
org.eu.srdc.ehealth.MyResource.retrieveDocument(MyResource.java:78)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:606)
org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory$1.invoke(ResourceMethodInvocationHandlerFactory.java:81)
org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:144)
org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:161)
org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ResponSEOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:160)
org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99)
org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:389)
org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:347)
org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102)
org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:326)
org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
org.glassfish.jersey.internal.Errors.process(Errors.java:315)
org.glassfish.jersey.internal.Errors.process(Errors.java:297)
org.glassfish.jersey.internal.Errors.process(Errors.java:267)
org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305)
org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154)
org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:471)
org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:425)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:383)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:336)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:223)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
note The full stack trace of the root cause is available in the Apache Tomcat/8.0.30 logs.
解决方法
运行tomcat的用户没有写入文件的权限,就像错误所说的那样.
建议您选择保存上传文件的特定文件夹,并为其授予tomcat用户写入权限(相应地更改用户名和路径)： $sudo mkdir /home/tomcat/uploads $sudo chown tomcat:tomcat /home/tomcat/uploads $sudo chmod u+wrx /home/tomcat/uploads 然后更改您的servlet代码以使用上传路径(下面的修改行)： FileOutputStream fos = new FileOutputStream("/home/tomcat/uploads/test.zip");
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