How to Marshal a Map into `value` Format in JAXB?
JAXB: Marshalling a Map into value Format
Context
JAXB natively supports marshalling a Map into a structure like this:
<map> <entry> <key> KEY </key> <value> VALUE </value> </entry> <entry> <key> KEY2 </key> <value> VALUE2 </value> </entry> ... </map>
However, in certain cases, it might be necessary to generate XML where the key becomes an element name and the value becomes its content, like so:
<map> <key> VALUE </key> <key2> VALUE2 </key2> ... </map>
Solution 1: Avoid Dynamic Element Names
It's generally advisable to avoid this type of XML generation because it introduces dependency on the map's content at runtime. This can impact interface contracts defined in the XML Schema (XSD).
Instead, consider using an enumerated type as the key of the Map to ensure that element names are known at compile time, allowing JAXB to generate a schema that restricts elements in the XML.
Solution 2: Customizing the XML Structure
To simplify the default generated structure to something like:
<map> <item key="KEY" value="VALUE"/> <item key="KEY2" value="VALUE2"/> </map>
Implement a custom MapAdapter that converts the Map into an array of MapElements.
The above is the detailed content of How to Marshal a Map into `value` Format in JAXB?. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



Java's classloading involves loading, linking, and initializing classes using a hierarchical system with Bootstrap, Extension, and Application classloaders. The parent delegation model ensures core classes are loaded first, affecting custom class loa

The article discusses implementing multi-level caching in Java using Caffeine and Guava Cache to enhance application performance. It covers setup, integration, and performance benefits, along with configuration and eviction policy management best pra

The article discusses using JPA for object-relational mapping with advanced features like caching and lazy loading. It covers setup, entity mapping, and best practices for optimizing performance while highlighting potential pitfalls.[159 characters]

The article discusses using Maven and Gradle for Java project management, build automation, and dependency resolution, comparing their approaches and optimization strategies.

The article discusses creating and using custom Java libraries (JAR files) with proper versioning and dependency management, using tools like Maven and Gradle.
