com.google.gson

类 JsonObject

java.lang.Object

com.google.gson.JsonElement

com.google.gson.JsonObject

public final class JsonObject
extends JsonElement

A class representing an object type in Json. An object consists of name-value pairs where names are strings, and values are any other type of JsonElement. This allows for a creating a tree of JsonElements. The member elements of this object are maintained in order they were added.

作者:

Inderjeet Singh, Joel Leitch

构造器概要

构造器

构造器和说明
JsonObject() Creates an empty JsonObject.

方法概要

方法

限定符和类型	方法和说明
void	add(String property, JsonElement value) Adds a member, which is a name-value pair, to self.
void	addProperty(String property, Boolean value) Convenience method to add a boolean member.
void	addProperty(String property, Character value) Convenience method to add a char member.
void	addProperty(String property, Number value) Convenience method to add a primitive member.
void	addProperty(String property, String value) Convenience method to add a primitive member.
JsonObject	deepCopy() Returns a deep copy of this element.
Set<Map.Entry<String,JsonElement>>	entrySet() Returns a set of members of this object.
boolean	equals(Object o)
JsonElement	get(String memberName) Returns the member with the specified name.
JsonArray	getAsJsonArray(String memberName) Convenience method to get the specified member as a JsonArray.
JsonObject	getAsJsonObject(String memberName) Convenience method to get the specified member as a JsonObject.
JsonPrimitive	getAsJsonPrimitive(String memberName) Convenience method to get the specified member as a JsonPrimitive element.
boolean	has(String memberName) Convenience method to check if a member with the specified name is present in this object.
int	hashCode()
JsonElement	remove(String property) Removes the property from this JsonObject.

从类继承的方法 com.google.gson.JsonElement

getAsBigDecimal, getAsBigInteger, getAsBoolean, getAsByte, getAsCharacter, getAsDouble, getAsFloat, getAsInt, getAsJsonArray, getAsJsonNull, getAsJsonObject, getAsJsonPrimitive, getAsLong, getAsNumber, getAsShort, getAsString, isJsonArray, isJsonNull, isJsonObject, isJsonPrimitive, toString

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

构造器详细资料

JsonObject

public JsonObject()

Creates an empty JsonObject.

方法详细资料

deepCopy

public JsonObject deepCopy()

从类复制的说明: JsonElement

Returns a deep copy of this element. Immutable elements like primitives and nulls are not copied.

指定者:

deepCopy 在类中 JsonElement

add

public void add(String property,
       JsonElement value)

Adds a member, which is a name-value pair, to self. The name must be a String, but the value can be an arbitrary JsonElement, thereby allowing you to build a full tree of JsonElements rooted at this node.

参数:

property - name of the member.

value - the member object.

remove

public JsonElement remove(String property)

Removes the property from this JsonObject.

参数:

property - name of the member that should be removed.

返回:

the JsonElement object that is being removed.

从以下版本开始:

1.3

addProperty

public void addProperty(String property,
               String value)

Convenience method to add a primitive member. The specified value is converted to a JsonPrimitive of String.

参数:

property - name of the member.

value - the string value associated with the member.

addProperty

public void addProperty(String property,
               Number value)

Convenience method to add a primitive member. The specified value is converted to a JsonPrimitive of Number.

参数:

property - name of the member.

value - the number value associated with the member.

addProperty

public void addProperty(String property,
               Boolean value)

Convenience method to add a boolean member. The specified value is converted to a JsonPrimitive of Boolean.

参数:

property - name of the member.

value - the number value associated with the member.

addProperty

public void addProperty(String property,
               Character value)

Convenience method to add a char member. The specified value is converted to a JsonPrimitive of Character.

参数:

property - name of the member.

value - the number value associated with the member.

entrySet

public Set<Map.Entry<String,JsonElement>> entrySet()

Returns a set of members of this object. The set is ordered, and the order is in which the elements were added.

返回:

a set of members of this object.

has

public boolean has(String memberName)

Convenience method to check if a member with the specified name is present in this object.

参数:

memberName - name of the member that is being checked for presence.

返回:

true if there is a member with the specified name, false otherwise.

get

public JsonElement get(String memberName)

Returns the member with the specified name.

参数:

memberName - name of the member that is being requested.

返回:

the member matching the name. Null if no such member exists.

getAsJsonPrimitive

public JsonPrimitive getAsJsonPrimitive(String memberName)

Convenience method to get the specified member as a JsonPrimitive element.

参数:

memberName - name of the member being requested.

返回:

the JsonPrimitive corresponding to the specified member.

getAsJsonArray

public JsonArray getAsJsonArray(String memberName)

Convenience method to get the specified member as a JsonArray.

参数:

memberName - name of the member being requested.

返回:

the JsonArray corresponding to the specified member.

getAsJsonObject

public JsonObject getAsJsonObject(String memberName)

Convenience method to get the specified member as a JsonObject.

参数:

memberName - name of the member being requested.

返回:

the JsonObject corresponding to the specified member.

equals

public boolean equals(Object o)

覆盖:

equals 在类中 Object

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Object