Jackson and some common notes (backup)

• Jackson Basic Information

The Jackson Library (http://jackson.codehaus.org) is a Java-based, open source JSON format parsing tool with 3 jar packages throughout the library:

1. 1. The jackson-core.jar--core package (required) provides an API based on "stream mode" parsing.
   2. The jackson-databind--data binding package (optional) provides APIs based on the object binding and tree model.
   3. jackson-annotations--Annotation Package (optional), provides annotation functionality.

• Common annotations

@JsonIgnore This annotation is used on properties or methods, and is ignored when the JSON operation is performed.

@JsonIgnoreProperties This annotation is used for class annotations, where JSON serialization ignores some properties in the Java bean, and if it is a proxy class, it can be marked on the class declaration that the serialization and deserialization are affected because it cannot be marked on a property or method.

@JsonPropertyOrder comments in the class declaration, the effect is to sort the attributes.

@JsonFormat This annotation is used on attributes to convert the date type directly to the desired format, such as @jsonformat (pattern = "Yyyy-mm-dd hh-mm-ss").

@JsonProperty This annotation is used on attributes to serialize the name of the property to another name, such as serializing the Truename property to name, @JsonProperty ("name").

　　 @JsonSerialize Serialization.

@JsonDeserialize deserialization.

Jackson and some common comments (backup)