Jackson 2.5.3 发布，高性能 JSON 处理库
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Jackson 是一个 Java 用来处理 JSON 格式数据的类库，性能非常好。
Jackson 2.5.3 发布，这是 2.5 版本的一个小更新，更新内容如下：
核心改进
Streaming
#191: Longest collision chain in symbol table now exceeds maximum, for single-quoted-character symbols
Core Databind
#731:XmlAdapterresult marshaling error in case of ValueType ==Object.class
#742: Allow deserialization ofnullObject Id (missing already allowed)
#744: Custom deserializer with parent object update failing
#745:EnumDeserializer.deserializerForCreator()fails when used to deserialize a Map key
#761: Builder deserializer: in-compatible type exception when return type is super type
#766: Fix Infinite recursion (StackOverflowError) when serializing a SOAP object
改进，数据类型
JSR-310
#21:ClassNotFoundExceptionin OSGi
改进，数据格式
CSV
#75: Support escapes at beginning of the file
改进，其他模块
Scala
#202: Getter is not detected correctly when method name is identical to variable name
JAXB Annotations
#40: XmlElementRef ignored if inside XmlElementWrapper