java - Struts2 File Download Permission Denied -


i have struts2 webapp running on tomcat 7 server. i'm trying allow user download file server.

when running eclipse tomcat server , accessing localhost, have no issues downloading files.

however when deploy onto server, when clicking on download link, following exception: 

java.io.filenotfoundexception: /var/tmp/myfile.pdf (permission denied)     java.io.fileinputstream.open(native method)     java.io.fileinputstream.<init>(fileinputstream.java:146)     com.my.path.to.action.updateaction.execute(updateaction.java:201)     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)     com.opensymphony.xwork2.defaultactioninvocation.invokeaction(defaultactioninvocation.java:446)     com.opensymphony.xwork2.defaultactioninvocation.invokeactiononly(defaultactioninvocation.java:285)     com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:248)     org.apache.struts2.interceptor.debugging.debugginginterceptor.intercept(debugginginterceptor.java:256)     com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:242)     com.opensymphony.xwork2.interceptor.defaultworkflowinterceptor.dointercept(defaultworkflowinterceptor.java:176)     com.opensymphony.xwork2.interceptor.methodfilterinterceptor.intercept(methodfilterinterceptor.java:98)     com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:242)     com.opensymphony.xwork2.validator.validationinterceptor.dointercept(validationinterceptor.java:265)     org.apache.struts2.interceptor.validation.annotationvalidationinterceptor.dointercept(annotationvalidationinterceptor.java:68)     com.opensymphony.xwork2.interceptor.methodfilterinterceptor.intercept(methodfilterinterceptor.java:98)     com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:242)     com.opensymphony.xwork2.interceptor.conversionerrorinterceptor.intercept(conversionerrorinterceptor.java:138)     com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:242)     com.opensymphony.xwork2.interceptor.parametersinterceptor.dointercept(parametersinterceptor.java:238)     com.opensymphony.xwork2.interceptor.methodfilterinterceptor.intercept(methodfilterinterceptor.java:98)     com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:242)     com.opensymphony.xwork2.interceptor.parametersinterceptor.dointercept(parametersinterceptor.java:238)     com.opensymphony.xwork2.interceptor.methodfilterinterceptor.intercept(methodfilterinterceptor.java:98)     com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:242)     com.opensymphony.xwork2.interceptor.staticparametersinterceptor.intercept(staticparametersinterceptor.java:191)     com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:242)     org.apache.struts2.interceptor.multiselectinterceptor.intercept(multiselectinterceptor.java:73)     com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:242)     org.apache.struts2.interceptor.checkboxinterceptor.intercept(checkboxinterceptor.java:91)     com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:242)     org.apache.struts2.interceptor.fileuploadinterceptor.intercept(fileuploadinterceptor.java:252)     com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:242)     com.opensymphony.xwork2.interceptor.modeldriveninterceptor.intercept(modeldriveninterceptor.java:100)     com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:242)     com.opensymphony.xwork2.interceptor.scopedmodeldriveninterceptor.intercept(scopedmodeldriveninterceptor.java:141)     com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:242)     com.opensymphony.xwork2.interceptor.chaininginterceptor.intercept(chaininginterceptor.java:145)     com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:242)     com.opensymphony.xwork2.interceptor.prepareinterceptor.dointercept(prepareinterceptor.java:171)     com.opensymphony.xwork2.interceptor.methodfilterinterceptor.intercept(methodfilterinterceptor.java:98)     com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:242)     com.opensymphony.xwork2.interceptor.i18ninterceptor.intercept(i18ninterceptor.java:176)     com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:242)     org.apache.struts2.interceptor.servletconfiginterceptor.intercept(servletconfiginterceptor.java:164)     com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:242)     com.opensymphony.xwork2.interceptor.aliasinterceptor.intercept(aliasinterceptor.java:193)     com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:242)     com.opensymphony.xwork2.interceptor.exceptionmappinginterceptor.intercept(exceptionmappinginterceptor.java:187)     com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:242)     org.apache.struts2.impl.strutsactionproxy.execute(strutsactionproxy.java:54)     org.apache.struts2.dispatcher.dispatcher.serviceaction(dispatcher.java:544)     org.apache.struts2.dispatcher.ng.executeoperations.executeaction(executeoperations.java:77)     org.apache.struts2.dispatcher.ng.filter.strutsprepareandexecutefilter.dofilter(strutsprepareandexecutefilter.java:91)

here action download file

action.java

private inputstream fileinputstream;      public inputstream getfileinputstream() {         return fileinputstream;     }  public string execute() throws exception {         file filetodownload = new file("/var/tmp/myfile.pdf");         system.out.print(filetodownload.getname());         filename = filetodownload.getname();         contentlength = filetodownload.length();         fileinputstream = new fileinputstream(filetodownload);         return success;     }

i've checked on file make sure file exists @ specified location , does. i've entered incorrect file name , error saying can't find specified file (which means can read directory , determine doesn't exist.)

here struts.

struts.xml

<action name="download" class="com.my.path.to.action.updateaction">         <result name="success" type="stream">                 <param name="contentdisposition">attachment;filename=${filename}</param>                 <param name="contenttype">application/doc</param>                 <param name="inputname">fileinputstream</param>                 <param name="buffersize">4096</param>                 <param name="contentlength">${contentlength}</param>         </result> </action>

to make sure no 1 confused, changed path in files accessed between windows path (which works) , linux path (which doesn't).

additionally, server running on ubuntu 12.04 server. if question should relocated different forum, please let me know.

this linux permissions issue. tomcat server running system user. user doesn't have permission path /var/tmp/ . need system administrator determine user that's running tomcat , provide access /var/tmp. and, yes, question not java question, system one.


Comments

Post a Comment

Popular posts from this blog

jOOQ update returning clause with Oracle -

according http://www.jooq.org/doc/3.8/manual/sql-building/sql-statements/update-statement/ jooq doesn't support returning clause in update statements databases except firebird , postgres. does know, still correct oracle jooq? according oracle's documentation, oracle db supports returning clase delete, insert, or update statements. incorrect manual you're right - manual wrong , should fixed: https://github.com/jooq/jooq/issues/5470 single row update returning jooq 3.8 added support single row update .. returning statements. internally, uses callablestatement , pl/sql block of form: begin update "my_table" set "my_table"."column" = 'xyz' "my_table"."id" = 1 returning "my_table"."id", "my_table"."column" ?, ?; ? := sql%rowcount; end; the relevant issue is: https://github.com/jooq/jooq/issues/5190 multi row update returning a...
Read more

java - Warning equals/hashCode on @Data annotation lombok with inheritance -

i have entity inherits other. on other hand, i'm using lombok project reduce boilerplate code, put @data annotation. annotation @data inheritance produces next warning: generating equals/hashcode implementation without call superclass, though class not extend java.lang.object. if intentional, add '@equalsandhashcode(callsuper=false)' type. is advisable add annotation @equalsandhashcode (callsuper = true) or @equalsandhashcode (callsuper = false) ? if not added, 1 callsuper=false or callsuper=true ? the default value false . 1 if don't specify , ignore warning. yes, recommended add @equalsandhashcode annotation on @data annotated classes extend else object. cannot tell if need true or false , depends on class hierarchy, , need examined on case-by-case basis. however, project or package, can configure in lombok.config call super methods if not direct subclass of object. lombok.equalsandhashcode.callsuper = call for configuration system ...
Read more

java - BasicPathUsageException: Cannot join to attribute of basic type -

i using java 8 jpa (hibernate 5.2.1). have clause works perfectly, until introduce clause make use foreign key table values too. i getting following error: basicpathusageexception: cannot join attribute of basic type i think problem related fact have join table, , not sure how create join using join table. employee - employee_category - category model (employee.java): @manytomany(cascade = cascadetype.all, fetch=fetchtype.eager) @jointable ( name="employee_category", joincolumns={ @joincolumn(name="emp_id", referencedcolumnname="id") }, inversejoincolumns={ @joincolumn(name="cat_id", referencedcolumnname="id") } ) private set<category> categories; model (category.java): @id private string id; jpa when introduce following code, fails error above (i think problem new piece of code): join<t, category> category = from.join("id"); predicates.add(criteriabuilder.like(category....
Read more