Minor Description
— UspsMockApiServlet.java:47, SE_NO_SERIALVERSIONID
SnVI: org.apache.ofbiz.shipment.thirdparty.usps.UspsMockApiServlet is Serializable; consider declaring a serialVersionUID
This class implements the Serializable interface, but does not define a serialVersionUID field. A change as simple as adding a reference to a .class object will add synthetic fields to the class, which will unfortunately change the implicit serialVersionUID (e.g., adding a reference to String.class will generate a static field class$java$lang$String). Also, different source code to bytecode compilers may use different naming conventions for synthetic variables generated for references to class objects or inner classes. To ensure interoperability of Serializable across versions, consider adding an explicit serialVersionUID.
— UspsMockApiServlet.java:129, DM_DEFAULT_ENCODING
Dm: Found reliance on default encoding in org.apache.ofbiz.shipment.thirdparty.usps.UspsMockApiServlet.doGet(HttpServletRequest, HttpServletResponse): java.io.ByteArrayOutputStream.toString()
Found a call to a method which will perform a byte to String (or String to byte) conversion, and will assume that the default platform encoding is suitable. This will cause the application behaviour to vary between platforms. Use an alternative API and specify a charset name or Charset object explicitly.
— UspsServices.java:152, DM_CONVERT_CASE
Dm: Use of non-localized String.toUpperCase() or String.toLowerCase() in org.apache.ofbiz.shipment.thirdparty.usps.UspsServices.uspsRateInquire(DispatchContext, Map)
A String is being converted to upper or lowercase, using the platform's default encoding. This may result in improper conversions when used with international characters. Use the
String.toUpperCase( Locale l )
String.toLowerCase( Locale l )
versions instead.
— UspsServices.java:166, DLS_DEAD_LOCAL_STORE
DLS: Dead store to maxWeight in org.apache.ofbiz.shipment.thirdparty.usps.UspsServices.uspsRateInquire(DispatchContext, Map)
This instruction assigns a value to a local variable, but the value is not read or used in any subsequent instruction. Often, this indicates an error, because the value computed is never used.
Note that Sun's javac compiler often generates dead stores for final local variables. Because FindBugs is a bytecode-based tool, there is no easy way to eliminate these false positives.
— UspsServices.java:296, RCN_REDUNDANT_NULLCHECK_WOULD_HAVE_BEEN_A_NPE
RCN: Nullcheck of shipToAddress at line 296 of value previously dereferenced in org.apache.ofbiz.shipment.thirdparty.usps.UspsServices.uspsInternationalRateInquire(DispatchContext, Map)
A value is checked here to see whether it is null, but this value can't be null because it was previously dereferenced and if it were null a null pointer exception would have occurred at the earlier dereference. Essentially, this code and the previous dereference disagree as to whether this value is allowed to be null. Either the check is redundant or the previous dereference is erroneous.
— UspsServices.java:331, DLS_DEAD_LOCAL_STORE
DLS: Dead store to maxWeight in org.apache.ofbiz.shipment.thirdparty.usps.UspsServices.uspsInternationalRateInquire(DispatchContext, Map)
This instruction assigns a value to a local variable, but the value is not read or used in any subsequent instruction. Often, this indicates an error, because the value computed is never used.
Note that Sun's javac compiler often generates dead stores for final local variables. Because FindBugs is a bytecode-based tool, there is no easy way to eliminate these false positives.
— UspsServices.java:361, DM_CONVERT_CASE
Dm: Use of non-localized String.toUpperCase() or String.toLowerCase() in org.apache.ofbiz.shipment.thirdparty.usps.UspsServices.uspsInternationalRateInquire(DispatchContext, Map)
A String is being converted to upper or lowercase, using the platform's default encoding. This may result in improper conversions when used with international characters. Use the
String.toUpperCase( Locale l )
String.toLowerCase( Locale l )
versions instead.
— UspsServices.java:1057, DLS_DEAD_LOCAL_STORE
DLS: Dead store to result in org.apache.ofbiz.shipment.thirdparty.usps.UspsServices.uspsUpdateShipmentRateInfo(DispatchContext, Map)
This instruction assigns a value to a local variable, but the value is not read or used in any subsequent instruction. Often, this indicates an error, because the value computed is never used.
Note that Sun's javac compiler often generates dead stores for final local variables. Because FindBugs is a bytecode-based tool, there is no easy way to eliminate these false positives.
— UspsServices.java:1406, DM_DEFAULT_ENCODING
Dm: Found reliance on default encoding in org.apache.ofbiz.shipment.thirdparty.usps.UspsServices.uspsDeliveryConfirmation(DispatchContext, Map): String.getBytes()
Found a call to a method which will perform a byte to String (or String to byte) conversion, and will assume that the default platform encoding is suitable. This will cause the application behaviour to vary between platforms. Use an alternative API and specify a charset name or Charset object explicitly.
— UspsServices.java:1447, OS_OPEN_STREAM_EXCEPTION_PATH
OS: org.apache.ofbiz.shipment.thirdparty.usps.UspsServices.uspsDumpShipmentLabelImages(DispatchContext, Map) may fail to close stream on exception
The method creates an IO stream object, does not assign it to any fields, pass it to other methods, or return it, and does not appear to close it on all possible exception paths out of the method. This may result in a file descriptor leak. It is generally a good idea to use a finally block to ensure that streams are closed.
— UspsServices.java:1447, OBL_UNSATISFIED_OBLIGATION_EXCEPTION_EDGE
OBL: org.apache.ofbiz.shipment.thirdparty.usps.UspsServices.uspsDumpShipmentLabelImages(DispatchContext, Map) may fail to clean up java.io.OutputStream on checked exception
This method may fail to clean up (close, dispose of) a stream, database object, or other resource requiring an explicit cleanup operation.
In general, if a method opens a stream or other resource, the method should use a try/finally block to ensure that the stream or resource is cleaned up before the method returns.
This bug pattern is essentially the same as the OS_OPEN_STREAM and ODR_OPEN_DATABASE_RESOURCE bug patterns, but is based on a different (and hopefully better) static analysis technique. We are interested is getting feedback about the usefulness of this bug pattern. To send feedback, either:
send email to findbugs@cs.umd.edu
file a bug report: http://findbugs.sourceforge.net/reportingBugs.html
In particular, the false-positive suppression heuristics for this bug pattern have not been extensively tuned, so reports about false positives are helpful to us.
See Weimer and Necula, Finding and Preventing Run-Time Error Handling Mistakes, for a description of the analysis technique.
— UspsServices.java:1547, DLS_DEAD_LOCAL_STORE
DLS: Dead store to fromCustomsReference in org.apache.ofbiz.shipment.thirdparty.usps.UspsServices.uspsPriorityMailInternationalLabel(DispatchContext, Map)
This instruction assigns a value to a local variable, but the value is not read or used in any subsequent instruction. Often, this indicates an error, because the value computed is never used.
Note that Sun's javac compiler often generates dead stores for final local variables. Because FindBugs is a bytecode-based tool, there is no easy way to eliminate these false positives.
— UspsServices.java:1615, NP_NULL_ON_SOME_PATH_EXCEPTION
NP: Possible null pointer dereference of product in org.apache.ofbiz.shipment.thirdparty.usps.UspsServices.uspsPriorityMailInternationalLabel(DispatchContext, Map) on exception path
A reference value which is null on some exception control path is dereferenced here. This may lead to a NullPointerException when the code is executed. Note that because FindBugs currently does not prune infeasible exception paths, this may be a false warning.
Also note that FindBugs considers the default case of a switch statement to be an exception path, since the default case is often infeasible.
— UspsServices.java:1624, NP_NULL_ON_SOME_PATH_EXCEPTION
NP: Possible null pointer dereference of originGeo in org.apache.ofbiz.shipment.thirdparty.usps.UspsServices.uspsPriorityMailInternationalLabel(DispatchContext, Map) on exception path
A reference value which is null on some exception control path is dereferenced here. This may lead to a NullPointerException when the code is executed. Note that because FindBugs currently does not prune infeasible exception paths, this may be a false warning.
Also note that FindBugs considers the default case of a switch statement to be an exception path, since the default case is often infeasible.
— UspsServices.java:1647, DM_DEFAULT_ENCODING
Dm: Found reliance on default encoding in org.apache.ofbiz.shipment.thirdparty.usps.UspsServices.uspsPriorityMailInternationalLabel(DispatchContext, Map): String.getBytes()
Found a call to a method which will perform a byte to String (or String to byte) conversion, and will assume that the default platform encoding is suitable. This will cause the application behaviour to vary between platforms. Use an alternative API and specify a charset name or Charset object explicitly.
— UspsServices.java:1701, DM_DEFAULT_ENCODING
Dm: Found reliance on default encoding in org.apache.ofbiz.shipment.thirdparty.usps.UspsServices.sendUspsRequest(String, Document, Delegator, String, String, Locale): java.io.ByteArrayOutputStream.toString()
Found a call to a method which will perform a byte to String (or String to byte) conversion, and will assume that the default platform encoding is suitable. This will cause the application behaviour to vary between platforms. Use an alternative API and specify a charset name or Charset object explicitly.
— UspsServices.java:1755, PZLA_PREFER_ZERO_LENGTH_ARRAYS
PZLA: Should org.apache.ofbiz.shipment.thirdparty.usps.UspsServices.convertPoundsToPoundsOunces(BigDecimal) return a zero length array rather than null?
It is often a better design to return a length zero array rather than a null reference to indicate that there are no results (i.e., an empty list of results). This way, no explicit check for null is needed by clients of the method.
On the other hand, using null to indicate "there is no answer to this question" is probably appropriate. For example, File.listFiles() returns an empty list if given a directory containing no files, and returns null if the file is not a directory.
— UspsServicesTests.java:39, MS_SHOULD_BE_FINAL
MS: org.apache.ofbiz.shipment.thirdparty.usps.UspsServicesTests.module isn't final but should be
This static field public but not final, and could be changed by malicious code or by accident from another package. The field could be made final to avoid this vulnerability.