com.google.gson.JsonElement类 参考

类 com.google.gson.JsonElement 继承关系图:

Public 成员函数
boolean	isJsonArray ()
boolean	isJsonObject ()
boolean	isJsonPrimitive ()
boolean	isJsonNull ()
JsonObject	getAsJsonObject ()
JsonArray	getAsJsonArray ()
JsonPrimitive	getAsJsonPrimitive ()
JsonNull	getAsJsonNull ()
boolean	getAsBoolean ()
Number	getAsNumber ()
String	getAsString ()
double	getAsDouble ()
float	getAsFloat ()
long	getAsLong ()
int	getAsInt ()
byte	getAsByte ()
char	getAsCharacter ()
BigDecimal	getAsBigDecimal ()
BigInteger	getAsBigInteger ()
short	getAsShort ()
String	toString ()

包函数
Boolean	getAsBooleanWrapper ()

详细描述

A class representing an element of Json. It could either be a JsonObject, a JsonArray, a JsonPrimitive or a JsonNull.

作者

Inderjeet Singh

Joel Leitch

成员函数说明

BigDecimal com.google.gson.JsonElement.getAsBigDecimal ( )

inline

convenience method to get this element as a BigDecimal.

返回

get this element as a BigDecimal.

异常

ClassCastException	if the element is of not a JsonPrimitive.
NumberFormatException	if the element is not a valid BigDecimal.
IllegalStateException	if the element is of the type JsonArray but contains more than a single element.

自从

1.2

BigInteger com.google.gson.JsonElement.getAsBigInteger ( )

inline

convenience method to get this element as a BigInteger.

返回

get this element as a BigInteger.

异常

ClassCastException	if the element is of not a JsonPrimitive.
NumberFormatException	if the element is not a valid BigInteger.
IllegalStateException	if the element is of the type JsonArray but contains more than a single element.

自从

1.2

boolean com.google.gson.JsonElement.getAsBoolean ( )

inline

convenience method to get this element as a boolean value.

返回

get this element as a primitive boolean value.

异常

ClassCastException	if the element is of not a JsonPrimitive and is not a valid boolean value.
IllegalStateException	if the element is of the type JsonArray but contains more than a single element.

Boolean com.google.gson.JsonElement.getAsBooleanWrapper ( )

inlinepackage

convenience method to get this element as a Boolean value.

返回

get this element as a Boolean value.

异常

ClassCastException	if the element is of not a JsonPrimitive and is not a valid boolean value.
IllegalStateException	if the element is of the type JsonArray but contains more than a single element.

byte com.google.gson.JsonElement.getAsByte ( )

inline

convenience method to get this element as a primitive byte value.

返回

get this element as a primitive byte value.

异常

ClassCastException	if the element is of not a JsonPrimitive and is not a valid byte value.
IllegalStateException	if the element is of the type JsonArray but contains more than a single element.

自从

1.3

char com.google.gson.JsonElement.getAsCharacter ( )

inline

convenience method to get this element as a primitive character value.

返回

get this element as a primitive char value.

异常

ClassCastException	if the element is of not a JsonPrimitive and is not a valid char value.
IllegalStateException	if the element is of the type JsonArray but contains more than a single element.

自从

1.3

double com.google.gson.JsonElement.getAsDouble ( )

inline

convenience method to get this element as a primitive double value.

返回

get this element as a primitive double value.

异常

ClassCastException	if the element is of not a JsonPrimitive and is not a valid double value.
IllegalStateException	if the element is of the type JsonArray but contains more than a single element.

float com.google.gson.JsonElement.getAsFloat ( )

inline

convenience method to get this element as a primitive float value.

返回

get this element as a primitive float value.

异常

ClassCastException	if the element is of not a JsonPrimitive and is not a valid float value.
IllegalStateException	if the element is of the type JsonArray but contains more than a single element.

int com.google.gson.JsonElement.getAsInt ( )

inline

convenience method to get this element as a primitive integer value.

返回

get this element as a primitive integer value.

异常

ClassCastException	if the element is of not a JsonPrimitive and is not a valid integer value.
IllegalStateException	if the element is of the type JsonArray but contains more than a single element.

JsonArray com.google.gson.JsonElement.getAsJsonArray ( )

inline

convenience method to get this element as a JsonArray. If the element is of some other type, a ClassCastException will result. Hence it is best to use this method after ensuring that this element is of the desired type by calling isJsonArray() first.

返回

get this element as a JsonArray.

异常

IllegalStateException

if the element is of another type.

JsonNull com.google.gson.JsonElement.getAsJsonNull ( )

inline

convenience method to get this element as a JsonNull. If the element is of some other type, a ClassCastException will result. Hence it is best to use this method after ensuring that this element is of the desired type by calling isJsonNull() first.

返回

get this element as a JsonNull.

异常

IllegalStateException

if the element is of another type.

自从

1.2

JsonObject com.google.gson.JsonElement.getAsJsonObject ( )

inline

convenience method to get this element as a JsonObject. If the element is of some other type, a ClassCastException will result. Hence it is best to use this method after ensuring that this element is of the desired type by calling isJsonObject() first.

返回

get this element as a JsonObject.

异常

IllegalStateException

if the element is of another type.

JsonPrimitive com.google.gson.JsonElement.getAsJsonPrimitive ( )

inline

convenience method to get this element as a JsonPrimitive. If the element is of some other type, a ClassCastException will result. Hence it is best to use this method after ensuring that this element is of the desired type by calling isJsonPrimitive() first.

返回

get this element as a JsonPrimitive.

异常

IllegalStateException

if the element is of another type.

long com.google.gson.JsonElement.getAsLong ( )

inline

convenience method to get this element as a primitive long value.

返回

get this element as a primitive long value.

异常

ClassCastException	if the element is of not a JsonPrimitive and is not a valid long value.
IllegalStateException	if the element is of the type JsonArray but contains more than a single element.

Number com.google.gson.JsonElement.getAsNumber ( )

inline

convenience method to get this element as a Number.

返回

get this element as a Number.

异常

ClassCastException	if the element is of not a JsonPrimitive and is not a valid number.
IllegalStateException	if the element is of the type JsonArray but contains more than a single element.

short com.google.gson.JsonElement.getAsShort ( )

inline

convenience method to get this element as a primitive short value.

返回

get this element as a primitive short value.

异常

ClassCastException	if the element is of not a JsonPrimitive and is not a valid short value.
IllegalStateException	if the element is of the type JsonArray but contains more than a single element.

String com.google.gson.JsonElement.getAsString ( )

inline

convenience method to get this element as a string value.

返回

get this element as a string value.

异常

ClassCastException	if the element is of not a JsonPrimitive and is not a valid string value.
IllegalStateException	if the element is of the type JsonArray but contains more than a single element.

boolean com.google.gson.JsonElement.isJsonArray ( )

inline

provides check for verifying if this element is an array or not.

返回

true if this element is of type JsonArray, false otherwise.

boolean com.google.gson.JsonElement.isJsonNull ( )

inline

provides check for verifying if this element represents a null value or not.

返回

true if this element is of type JsonNull, false otherwise.

自从

1.2

boolean com.google.gson.JsonElement.isJsonObject ( )

inline

provides check for verifying if this element is a Json object or not.

返回

true if this element is of type JsonObject, false otherwise.

boolean com.google.gson.JsonElement.isJsonPrimitive ( )

inline

provides check for verifying if this element is a primitive or not.

返回

true if this element is of type JsonPrimitive, false otherwise.

String com.google.gson.JsonElement.toString ( )

inline

Returns a String representation of this element.

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该类的文档由以下文件生成:

• src/com/google/gson/JsonElement.java