Otherwise, the application would not compile. For that reason i added org. If these are wrong, please tell me which one to use. I followed the instructions in the first comment above. Adding jaxb-core and jaxb-impl to my lib directory solved my problems. Does this answer your question? Add a comment. Active Oldest Votes. It is required to have 2 entries for jaxb: requires java. The only two dependencies required are: compile group: 'javax.
Improve this answer. Jeremy Jeremy 2 2 bronze badges. For me this was also the issue, it only appeared when running JaxbContext in multiple threads. Solution that I would suggest is to define JaxbContext as a separate dependency or Spring bean and also as a bonus, it is recommended by Oracle to only create JaxbContext once anyway: javaee.
Donatello Donatello 2, 3 3 gold badges 25 25 silver badges 33 33 bronze badges. Could you please check the question stackoverflow. I have AppClassLoader as you can see in the stacktrace provided but I'sm still getting javax. In your case, I suggest you to add the jaxb-runtime from glassfish, instead of the one from Sun which is more or less deprecated if I remember well — Donatello.
I was using that one from Glassfish, but I was still getting the same error. Amandeep Singh Amandeep Singh 27 4 4 bronze badges. Ostecke Ostecke 8 8 silver badges 11 11 bronze badges. Filomat Filomat 1 1 gold badge 9 9 silver badges 13 13 bronze badges. For the implementation of OAuth2 with Spring 2. This sample application demonstrates how to modify a java content tree and marshal it back to XML data.
In this example, the input document will be unmarshalled a small chunk at a time, instead of unmarshalling the whole document at once. This sample app demonstrates how a pull-parser can be used with JAXB to increase the flexibility of processing. This example illustrates a different approach to the streaming unmarshalling, which is suitable for processing a large document.
This sample shows how to use the new non-standard synchronized method support. This sample application demonstrates how to unmarshal an instance document into a Java content tree and access data contained within it. This sample application demonstrates how to enable validation during the unmarshal operations. This example demonstrates how one can use one communication channel such as a socket to send multiple XML messages, and how it can be combined with JAXB.
This example demonstrates how such modification can be done easily. This document contains information that should help you use this software library more effectively. See the Frequently Asked Questions for additional information.
The most up-to-date version of this document can be found on-line. Marked com. They are part of JDK. JAXB : generated code should be compilable with '-Xdoclint:all'. Fixed catalog logging. Allow user to disable usage of system proxies. Force CatalogResolver to set verbosity level. This release is integrated into JDK 8.
Build 2. New maven groupId introduced: org. Fixed the bug with namespaces. Namespace must match in order to be able to generate ref otherwise the generated element ref belongs to different namespace. Ref generation is isolated only to cases where package mapping prevails.
Removed the need for synchronization - tailor can still happen multiple times under specific circumstances, but it's better than contention within multiple threads on one class. Fixed maven configuration: made JDK deps required, map jaxb-extra-osgi exports by version, removed dep on com.
JAXB 1. It's bundled into the jaxb-extra-osgi. The processing of -source XJC option is removed. We use 2. For generating 1. It's already part of JDK. If you are using JDK which doesn't contain it - you have to download it manually e. JAXB project was split into several modules: core, impl, xjc and jxc. EclipseLink MOXy. JAXB - Cannot generate java classes from xjc. JAXB - xjc - proxy authentication fails. JAXB - ' ' at the end of a namespace : different of behavior, sometimes a underscore is added, sometimes not.
JAXB - wrong default value for "target" parameter for xjc ant task. Libraries jaxb1-xjc. JAXB - Marshaller. JAXB - javax. JAXB - Attribute with default generates different types for get and set methods. JAXB - Memory leak in com. JAXB - Marshaller holds reference after marshalling for the writer that was used to marshal into. JAXB - Corrupt license file in the distribution.
JAXB - Generated episode bindings should contain target package name. JAXB - Reusing unmarshaller results in an unexpected result. JAXB - Different unmarshalling behavior between primitive type and simpletype with enumeration under restriction. JAXB - Missing keyword 'throw'. JAXB - 2. JAXB - Binding file cannot refer to schema file with space in file name.
JAXB - Map handling broken. JAXB - Mailing list consolidation suggestions. JAXB - Update to command-line help text. JAXB - Problems with abstract classes xsi type processing. Specification changelog. Fixes to bugs. Allow separate compilations to perform element substitutions. Bug fix: javax. JAXB unofficial user's guide is available now, though it's still a work in progress. Some of the code is split into a separate istack-commons project to promote more reuse among projects. Default marshaller error handling behavior became draconian previously errors were ignored.
Optimized binary data handling enabled by callbacks in package javax. Implemented javax. Improved xjc command line interface - better support for proxy options, more options for specifying schema files. Made the default ValidationEventHandler more forgiving in 2. Addition of javax. Per complex type definition, generate one value class instead of an interface and implementation class. Per global element declaration, generate a factory method instead of generating a schema-derived interface and implementation class.
This is an ongoing work-in-progress. Any feedback appreciated. Because XML Schema is so complicated, and because there are a lot of tools out there do not implement the spec correctly, it is often the case that a schema you are trying to compile has some real errors in it.
So the first course of action usually is to fix problems in the schema. However, in some situations, you might not have an authority to make changes to the schema. If that is the case and you really need to compile the schema, you can bypass the correctness check by using the -nv option in XJC. When you do this, keep in mind that you are possibly feeding "garbage" in, so you may see XJC choke with some random exception.
This is an actual example of the offending part of a schema, taken from MathML. If you go to line of scripts. This is a standard technique in designing a schema.
This, however, confuses JAXB, because it tries to bind the first B to its own property, then C to its own property, then the second B to its own property, and so we end up having a collision again. In this case, you'd probably want the whole thing to map to a single list so that you can retain the order those elements show up in the document. To be more precise, for each of all types and many elements exactly what elements get a factory and what doesn't is bit tricky to explain , XJC produces one method on the ObjectFactory class in the same package.
There are two approaches to fix this problem. If the collision is coming from two different schemas with different target namespaces, then you can easily avoid the collision by compiling them into different Java packages.
This can be used in all cases, but if you have a large number of conflicts, you'll have to specify this customization one by one. This works by writing an XPath expression that matches a particular element in the schema document. For example, given the following schema and binding file:. For this to work, the XPath expression needs to match one and only one element in the schema document. When the XPath expression is incorrect and it didn't match anything, you get this "XPath evaluation of Common causes of this problem include typos, incorrect namespace URI declarations, and misunderstanding of XPath.
Sometimes a schema may refer to another schema document without indicating where the schema file can be found, like this:. In other cases, a schema may refer to another schema on the network, which often slows down your compilation process and makes it unreliable. Yet in some other cases, a schema may reference another schema in relative path, and that may not match your directory structure.
XJC bundles a catalog resolver so that you can work around these situations without changing the schema documents. The main idea behind the catalog is "redirection" when XJC is about to fetch resources, it will consult the catalog resolver to see if it can find the resource elsewhere which is usually your local resources.
If it is found, the specified actual location is read instead. Otherwise XJC will attempt to resolve the absolutepath. So what this means is that if your schema is written like this:. XJC will match the value of the namespace attribute and see if there's any matching entry. So given a schema like this:. To do this from the CLI, use the -catalog option.
See xjc -help for more details. See XJC ant task documentation for more details. If you are trying to write a catalog file and banging your head against a wall because it's not working, you should enable the verbose option of the catalog resolver. How you do this depends on what interface you use:. Add -Dxml. This mode is not what people typically expect as " wildcard ", but this is the default. The following shows this binding. If it encounters elements that cannot be unmarshalled, DOM elements are produced instead.
Sometimes XJC binds an element declaration to a Java class. What makes this difference? Over time schema authors have developed several techniques to modularize large schemas. Some of those techniques have some noteworthy interactions with XJC. Chameleon schema" read more , in particular this is a technique used to define multiple almost-identical sets of definitions into multiple namespaces from a single schema document.
For example, with this technique, you can write just one "foo" complex type and define it into namespace X and Y. In this case, one tends to hope that XJC will only give you one Foo class for this, but unfortunately because it's actually defined in two namespaces, JAXB needs two Java classes to distinguish X:foo and Y:foo , so you'll get multiple copies.
If you are in control of the schema, see if you can rewrite the schema to avoid using this technique. In some cases, the schema doesn't actually exploit the additional power of this technique, so this translation can be done without affecting XML instance documents. In some other cases, the chameleon schema can be argued as a bad schema design, as it duplicates definitions in many places.
If you are not in control of the schema, see if you can rewrite the schema nevertheless. This will only work if your transformation doesn't affect XML instance documents.
Perhaps there can be a plugin that eases the pain of this, such as by defining common interfaces among copies. Adding behaviors to the generated code is one area that still needs improvement. Your feedback is appreciated. To add a behavior, first write a class that extends from Person. You also need to extend ObjectFactory to return this new class. PersonEx can be marshalled out just like Person :. See the following example:. Example This creates a class hierarchy like the following among the generated Java code :.
You'll then manually write MyVehicle class that extends from Vehicle. Annotate this class with XmlTransient to achieve the desired effect. Under some limited circumstances, a weaker databinding is preferable for various reasons. JAXB does offer a few ways for you to achieve this. The following customization will stop binding a simple type to a type-safe enum. This can be convenient when number of constants is too large to be an useful enum by default, the JAXB spec won't generate enum with more than constants, but even might be too large for you.
To disable such type-safe enum binding altogether for the entire schema, use a global binding setting like this this is actually telling XJC not to generate enums if a simple type has more than 0 constants the net effect is no enum generation :. This customization can be attached to the following schema components:. In the following example, a wildcard is mapped to a DOM node.
Each element that matches to the wildcard will be turned into a DOM tree. This extension can be used to access wildcard content or can be used to process a part of a document by using other technologies that require "raw" XML.
By default, JAXB generates a getContent method for accessing wildcard content, but it only supports "lax" handling which means that unknown content is discarded. You may find more information in 7. There was a suggestion by another user that beanlib has been used successfully to clone JAXB objects. See the example below:. Note that this customization is per namespace. That is, even if your schema is split into multiple schema documents, you cannot put them into different packages if they are all in the same namespace.
Under some rare circumstances, XJC will generate some Java classes into a package called org. Since this package name is most often problematic, you can rename this by simply saving the following text in an. This is bit tricky, but the idea is that since you can define a schema for one namespace in multiple schema documents, this makes XJC think that this schema is a part of the built-in "XML Schema for XML Schema".
When using an external customization file, the JAXB spec requires that you use XPath as a means to specify what your customization is attached to. For example, if you want to change the class name generated from a complex type, you'd write something like:. It's verbose, because often a trivial target schema component like this "global complex type foo" takes up a lot of characters.
The xs namespace declaration also takes up some space, although in this case we managed to avoid declaring the "tns" namespace that represents the namespace that the schema defines. It's also error prone, because it relies on the way schema documents are laid out, because the schemaLocation attribute needs to point to the right schema document file.
When a schema is split into multiple files for modularity happens especially often with large schemas , then you'd have to find which schema file it is. Even though you can use relative paths, this hard-coding of path information makes it hard to pass around the binding file to other people.
The key technology to solve this problem is a " schema component designator " SCD. This is a path language just like XPath, but whereas XPath is designed to refer to XML infoset items like elements and attributes, SCD is designed to refer to schema components like element declarations or complex types.
If you know XPath, I think you'll find this fairly easy to learn. This is of course not a very attractive option if your build process runs XJC as a part of it.
Alternatively, the following customization file can be used to do this. When using external customization file, the JAXB spec requires you to use XPath as a means to specify what your customization is attached to. For example, if you want to change the class name generated from a complex type, you'd use the following customization:. Customization to use Calendar for x s:date. To use the Date class, you'll need to do a bit more work. First, put the following class into your source tree:. Customization to use Date for x s:date.
There are other kinds of classes that are more close to reflection. Those classes don't have methods like getAddress , and instead you'd do get "Address". It's one class that represents million different data structures, be it a customer table or a product table.
Instead, you almost always need to look at an instance to determine the shape of XML. These classes are not really suitable for binding in JAXB. There are a few online articles that cover this topic. Also, many modern database offers a native ability to export a query into XML, which is supposed to work a lot faster than you'd do in Java and saves your time of writing code.
JAXB spec defines a special handling for Map when it's used as a propety of a bean. For example, the following bean would produce XMLs like the following:. Unfortunately, as of 2. This issue has been recorded as and the fix needs to happen in later versions of the JAXB spec. In the mean time, such top-level objects have to be first adapted to a bean that JAXB can process. This has added benefit of being able to control XML representation better.
The following code illustrates how to do this:. If you have a lot of difference kinds of Map , you can instead use Object as the key and the value type. In that way, you'll be able to use maps with different type parameters, at the expense of seeing xsi:type attribute on the instance document. When your interface is implemented by a large number of sub-classes, consider using XmlRootElement annotation like this:. Implementations are open-ended; anyone can implement those interfaces, even by different people from different modules, provided they are all given to the JAXBContext.
There's no need to list all the implementation classes in anywhere. Every reference to interface needs to have the XmlElementRef annotation. XmlElementWrapper is often useful with this, as it allows you need to group them.
Such as:. When you use interfaces just to hide your implementation classes from exposure, and when there's 1-to-1 or close to 1-on-1 relationship between a class and an interface, XmlJavaTypeAdapter can be used like below. Interface and implementation will be tightly coupled through an adapter, although changing an adapter code will allow you to support multiple implementations.
A variation of this technique is when you have a few implementations for interface, not just one. XmlJavaTypeAdapter for interfaces with multiple implementations. To take this example a bit further, you can use Object instead of AbstractFooImpl.
The following example illustarates this:. As you can see, the schema will generated to accept xs:anyType which is more relaxed than what the Java code actually demands. The instance will be the same as the above example. AnyTypeAdapter class in the runtime that defines this adapter. So you won't have to write this adapter in your code. If the use of interface is very little and there's 1-to-1 or close to relationship between interfaces and implementations, then you might find XmlElement to be the least amount of work.
In this approach, a reference to an interface has to have knowledge of the actual implementation class. So while this requires the least amount of typing, it probably wouldn't work very well if this crosses module boundaries.
Like the XmlJavaTypeAdapter approach, this can be used even when there are multiple implementations, provided that they share the common ancestor. Occasionally the above approaches cause the generated schema to become somewhat ugly, even though it does make the JAXB runtime work correctly. See this thread for an example.
TODO: more details and perhaps an example. Some users attempted to use the " generateValueClass " customization and see if they can completely replace the generated implementations with other implementations. Unfortunately, this does not work. So just implementing interfaces is not sufficient. This mode is mainly added to simplify the migration from JAXB 1. Here is the basic problem of evolution.
Now you are working towawrd CoolApp v2, and you want to make some changes to Foo. But you want to do so in such a way that v1 and v2 can still talk to each other. The evolution compatibility has two different aspects. One is the schema compatibility , which is about the relationship between the v1 schema and the v2 schema.
There are two directions in the runtime compatibility. One is whether v1 can still read what v2 write forward compatible , and the other is whether v2 can read what v1 wrote backward compatible. So we call it backward semi-compatible if v2 can read what v1 wrote in this default unmarshalling mode, and similarly forward semi-compatible if v1 can read what v2 wrote in this default unmarshalling mode.
Those changes are both backward and forward compatible, as they don't cause any change to the XML representation. Adding super class is backward compatible and forward semi-compatible. Similarly, removing super class is forward compatible and backward semi-compatible. Adding new annotated fields or methods is backward compatible and forward semi-compatible. Similarly, removing them is forward compatible and backward semi-compatible. If you change the property name from X to Y, that would be the equivalent of deleting X and adding Y, so it would be backward and forward semi-compatible.
These are backward and forward semi-compatible. See below:. If you change a property type, generally speaking it will be not compatible at all.
For example, you can't change from java. Calendar to int and expect it to work. To make it a somewhat compatible change, the old type and the new type has to be related. For example, String can represent all int values, so changing int to String would be a backward compatible and forward semi-compatible change. Your program sometimes needs to have a different in-memory data structure from its XML representation. JAXB has a few different ways to achieve this.
XmlJavaTypeAdapter allows you to de-couple the in-memory representation and the XML representation by introducing an intermediate representation. The basic model is as follows:.
See XmlAdapter for a general description of how adapters works. While the two jars have been added to Maven Dependencies in Eclipse, the error message persists both in Eclipse and Maven build. How can I include these jars in my Maven build and have them used both in Eclipse and on the target system? I just ran into this issue with jaxb also; goodness do I love Maven not.
Here's how I resolved the problem. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams?
Collectives on Stack Overflow. Learn more. Asked 9 years, 10 months ago. Active 1 year, 3 months ago. Viewed k times. Improve this question. Pascal Kesseli. The solution might have been the same, but the questions, context, stactrace and the exceptions addressed are different. If the original question had bundled or quoted exceptions to expect as signs to apply this kind of solution, it would have been helpful.
But no, that isn't the case, that's why the solution has got some votes up regardless of duplicate label. Add a comment. Active Oldest Votes. Improve this answer. Jaxb is included in spring-boot-data-jpa 2. This worked for me but I see this warning: Illegal reflective access by com. String,byte[],int,int — djangofan. When I run the app jar from terminal the error doesn't occur.
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