Class JSONObject
- java.lang.Object
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- com.github.openjson.JSONObject
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public class JSONObject extends java.lang.Object
A modifiable set of name/value mappings. Names are unique, non-null strings. Values may be any mix ofJSONObjects
,JSONArrays
, Strings, Booleans, Integers, Longs, Doubles orNULL
. Values may not benull
,NaNs
,infinities
, or of any type not listed here.This class can coerce values to another type when requested.
- When the requested type is a boolean, strings will be coerced using a case-insensitive comparison to "true" and "false".
- When the requested type is a double, other
Number
types will be coerced usingdoubleValue
. Strings that can be coerced usingDouble.valueOf(String)
will be. - When the requested type is an int, other
Number
types will be coerced usingintValue
. Strings that can be coerced usingDouble.valueOf(String)
will be, and then cast to int. - When the requested type is a long, other
Number
types will be coerced usinglongValue
. Strings that can be coerced usingDouble.valueOf(String)
will be, and then cast to long. This two-step conversion is lossy for very large values. For example, the string "9223372036854775806" yields the long 9223372036854775807. - When the requested type is a String, other non-null values will be
coerced using
String.valueOf(Object)
. Although null cannot be coerced, the sentinel valueNULL
is coerced to the string "null".
This class can look up both mandatory and optional values:
- Use
getType()
to retrieve a mandatory value. This fails with aJSONException
if the requested name has no value or if the value cannot be coerced to the requested type. - Use
optType()
to retrieve an optional value. This returns a system- or user-supplied default if the requested name has no value or if the value cannot be coerced to the requested type.
Warning: this class represents null in two incompatible ways: the standard Java
null
reference, and the sentinel valueNULL
. In particular, callingput(name, null)
removes the named entry from the object butput(name, JSONObject.NULL)
stores an entry whose value isJSONObject.NULL
.Instances of this class are not thread safe. Although this class is nonfinal, it was not designed for inheritance and should not be subclassed. In particular, self-use by overrideable methods is not specified. See Effective Java Item 17, "Design and Document or inheritance or else prohibit it" for further information.
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Field Summary
Fields Modifier and Type Field Description private java.util.LinkedHashMap<java.lang.String,java.lang.Object>
nameValuePairs
private static java.lang.Double
NEGATIVE_ZERO
static java.lang.Object
NULL
A sentinel value used to explicitly define a name with no value.
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Constructor Summary
Constructors Constructor Description JSONObject()
Creates aJSONObject
with no name/value mappings.JSONObject(JSONObject copyFrom, java.lang.String[] names)
Creates a newJSONObject
by copying mappings for the listed names from the given object.JSONObject(JSONTokener readFrom)
Creates a newJSONObject
with name/value mappings from the next object in the tokener.JSONObject(java.lang.Object bean)
Creates a json object from a beanJSONObject(java.lang.String json)
Creates a newJSONObject
with name/value mappings from the JSON string.JSONObject(java.util.Map copyFrom)
Creates a newJSONObject
by copying all name/value mappings from the given map.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description JSONObject
accumulate(java.lang.String name, java.lang.Object value)
Appendsvalue
to the array already mapped toname
.JSONObject
append(java.lang.String name, java.lang.Object value)
Appends values to the array mapped toname
.(package private) java.lang.String
checkName(java.lang.String name)
protected void
encode(JSONStringer stringer)
Encodes this object usingJSONStringer
providedjava.lang.Object
get(java.lang.String name)
Returns the value mapped byname
, or throws if no such mapping exists.boolean
getBoolean(java.lang.String name)
Returns the value mapped byname
if it exists and is a boolean or can be coerced to a boolean, or throws otherwise.double
getDouble(java.lang.String name)
Returns the value mapped byname
if it exists and is a double or can be coerced to a double, or throws otherwise.int
getInt(java.lang.String name)
Returns the value mapped byname
if it exists and is an int or can be coerced to an int, or throws otherwise.JSONArray
getJSONArray(java.lang.String name)
Returns the value mapped byname
if it exists and is aJSONArray
, or throws otherwise.JSONObject
getJSONObject(java.lang.String name)
Returns the value mapped byname
if it exists and is aJSONObject
, or throws otherwise.long
getLong(java.lang.String name)
Returns the value mapped byname
if it exists and is a long or can be coerced to a long, or throws otherwise.static java.lang.String[]
getNames(JSONObject x)
java.lang.String
getString(java.lang.String name)
Returns the value mapped byname
if it exists, coercing it if necessary, or throws if no such mapping exists.boolean
has(java.lang.String name)
Returns true if this object has a mapping forname
.private void
init(JSONTokener readFrom)
private void
init(java.util.Map copyFrom)
boolean
isNull(java.lang.String name)
Returns true if this object has no mapping forname
or if it has a mapping whose value isNULL
.java.util.Iterator<java.lang.String>
keys()
Returns an iterator of theString
names in this object.java.util.Set<java.lang.String>
keySet()
Returns the set ofString
names in this object.int
length()
Returns the number of name/value mappings in this object.JSONArray
names()
Returns an array containing the string names in this object.static java.lang.String
numberToString(java.lang.Number number)
Encodes the number as a JSON string.static java.util.Map<java.lang.String,java.lang.Object>
objectAsMap(java.lang.Object bean)
Creates a name-value map from a beanjava.lang.Object
opt(java.lang.String name)
Returns the value mapped byname
, or null if no such mapping exists.boolean
optBoolean(java.lang.String name)
Returns the value mapped byname
if it exists and is a boolean or can be coerced to a boolean, or false otherwise.boolean
optBoolean(java.lang.String name, boolean fallback)
Returns the value mapped byname
if it exists and is a boolean or can be coerced to a boolean, orfallback
otherwise.double
optDouble(java.lang.String name)
Returns the value mapped byname
if it exists and is a double or can be coerced to a double, orNaN
otherwise.double
optDouble(java.lang.String name, double fallback)
Returns the value mapped byname
if it exists and is a double or can be coerced to a double, orfallback
otherwise.int
optInt(java.lang.String name)
Returns the value mapped byname
if it exists and is an int or can be coerced to an int, or 0 otherwise.int
optInt(java.lang.String name, int fallback)
Returns the value mapped byname
if it exists and is an int or can be coerced to an int, orfallback
otherwise.JSONArray
optJSONArray(java.lang.String name)
Returns the value mapped byname
if it exists and is aJSONArray
, or null otherwise.JSONObject
optJSONObject(java.lang.String name)
Returns the value mapped byname
if it exists and is aJSONObject
, or null otherwise.long
optLong(java.lang.String name)
Returns the value mapped byname
if it exists and is a long or can be coerced to a long, or 0 otherwise.long
optLong(java.lang.String name, long fallback)
Returns the value mapped byname
if it exists and is a long or can be coerced to a long, orfallback
otherwise.java.lang.String
optString(java.lang.String name)
Returns the value mapped byname
if it exists, coercing it if necessary, or the empty string if no such mapping exists.java.lang.String
optString(java.lang.String name, java.lang.String fallback)
Returns the value mapped byname
if it exists, coercing it if necessary, orfallback
if no such mapping exists.JSONObject
put(java.lang.String name, boolean value)
Mapsname
tovalue
, clobbering any existing name/value mapping with the same name.JSONObject
put(java.lang.String name, double value)
Mapsname
tovalue
, clobbering any existing name/value mapping with the same name.JSONObject
put(java.lang.String name, int value)
Mapsname
tovalue
, clobbering any existing name/value mapping with the same name.JSONObject
put(java.lang.String name, long value)
Mapsname
tovalue
, clobbering any existing name/value mapping with the same name.JSONObject
put(java.lang.String name, java.lang.Object value)
Mapsname
tovalue
, clobbering any existing name/value mapping with the same name.JSONObject
putOpt(java.lang.String name, java.lang.Object value)
Equivalent toput(name, value)
when both parameters are non-null; does nothing otherwise.static java.lang.String
quote(java.lang.String data)
Encodesdata
as a JSON string.java.lang.Object
remove(java.lang.String name)
Removes the named mapping if it exists; does nothing otherwise.JSONArray
toJSONArray(JSONArray names)
Returns an array with the values corresponding tonames
.java.lang.String
toString()
Encodes this object as a compact JSON string, such as:java.lang.String
toString(int indentSpaces)
Encodes this object as a human readable JSON string for debugging, such as:java.lang.String
toString(JSONStringer stringer)
Encodes this object usingJSONStringer
providedstatic java.lang.Object
wrap(java.lang.Object o)
Wraps the given object if necessary.
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Field Detail
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NEGATIVE_ZERO
private static final java.lang.Double NEGATIVE_ZERO
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NULL
public static final java.lang.Object NULL
A sentinel value used to explicitly define a name with no value. Unlikenull
, names with this value:- show up in the
names()
array - show up in the
keys()
iterator - return
true
forhas(String)
- do not throw on
get(String)
- are included in the encoded JSON string.
This value violates the general contract of
Object.equals(java.lang.Object)
by returning true when compared tonull
. ItstoString()
method returns "null". - show up in the
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nameValuePairs
private final java.util.LinkedHashMap<java.lang.String,java.lang.Object> nameValuePairs
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Constructor Detail
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JSONObject
public JSONObject()
Creates aJSONObject
with no name/value mappings.
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JSONObject
public JSONObject(java.util.Map copyFrom)
Creates a newJSONObject
by copying all name/value mappings from the given map.- Parameters:
copyFrom
- a map whose keys are of typeString
and whose values are of supported types.- Throws:
java.lang.NullPointerException
- if any of the map's keys are null.
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JSONObject
public JSONObject(JSONTokener readFrom) throws JSONException
Creates a newJSONObject
with name/value mappings from the next object in the tokener.- Parameters:
readFrom
- a tokener whose nextValue() method will yield aJSONObject
.- Throws:
JSONException
- if the parse fails or doesn't yield aJSONObject
.
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JSONObject
public JSONObject(java.lang.String json) throws JSONException
Creates a newJSONObject
with name/value mappings from the JSON string.- Parameters:
json
- a JSON-encoded string containing an object.- Throws:
JSONException
- if the parse fails or doesn't yield aJSONObject
.
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JSONObject
public JSONObject(JSONObject copyFrom, java.lang.String[] names) throws JSONException
Creates a newJSONObject
by copying mappings for the listed names from the given object. Names that aren't present incopyFrom
will be skipped.- Parameters:
copyFrom
- The source object.names
- The names of the fields to copy.- Throws:
JSONException
- On internal errors. Shouldn't happen.
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JSONObject
public JSONObject(java.lang.Object bean) throws JSONException
Creates a json object from a bean- Parameters:
bean
- the bean to create the json object from- Throws:
JSONException
- If there is an exception while reading the bean
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Method Detail
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init
private void init(JSONTokener readFrom)
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init
private void init(java.util.Map copyFrom)
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objectAsMap
public static java.util.Map<java.lang.String,java.lang.Object> objectAsMap(java.lang.Object bean) throws JSONException
Creates a name-value map from a bean- Parameters:
bean
- the bean to create the map from- Returns:
- name-value map representing the bean
- Throws:
JSONException
- If there is an exception while reading the bean
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getNames
public static java.lang.String[] getNames(JSONObject x)
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length
public int length()
Returns the number of name/value mappings in this object.- Returns:
- the length of this.
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put
public JSONObject put(java.lang.String name, boolean value) throws JSONException
Mapsname
tovalue
, clobbering any existing name/value mapping with the same name.- Parameters:
name
- The name of the value to insert.value
- The value to insert.- Returns:
- this object.
- Throws:
JSONException
- Should not be possible.
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put
public JSONObject put(java.lang.String name, double value) throws JSONException
Mapsname
tovalue
, clobbering any existing name/value mapping with the same name.- Parameters:
name
- The name for the new value.value
- a finite value. May not beNaNs
orinfinities
.- Returns:
- this object.
- Throws:
JSONException
- if value is NaN or infinite.
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put
public JSONObject put(java.lang.String name, int value) throws JSONException
Mapsname
tovalue
, clobbering any existing name/value mapping with the same name.- Parameters:
name
- The name for the new value.value
- The new value.- Returns:
- this object.
- Throws:
JSONException
- Should not be possible.
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put
public JSONObject put(java.lang.String name, long value) throws JSONException
Mapsname
tovalue
, clobbering any existing name/value mapping with the same name.- Parameters:
name
- The name of the new value.value
- The new value to insert.- Returns:
- this object.
- Throws:
JSONException
- Should not be possible.
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put
public JSONObject put(java.lang.String name, java.lang.Object value) throws JSONException
Mapsname
tovalue
, clobbering any existing name/value mapping with the same name. If the value isnull
, any existing mapping forname
is removed.- Parameters:
name
- The name of the new value.value
- aJSONObject
,JSONArray
, String, Boolean, Integer, Long, Double,NULL
, ornull
. May not beNaNs
orinfinities
. If value is Map or Collection the value is wrapped using corresponding JSONObject(map) or JSONArray(collection) object. This behavior is considered unsafe and is added for compatibility with original 'org.json' package only.- Returns:
- this object.
- Throws:
JSONException
- if the value is an invalid double (infinite or NaN).
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putOpt
public JSONObject putOpt(java.lang.String name, java.lang.Object value) throws JSONException
Equivalent toput(name, value)
when both parameters are non-null; does nothing otherwise.- Parameters:
name
- The name of the value to insert.value
- The value to insert.- Returns:
- this object.
- Throws:
JSONException
- if the value is an invalid double (infinite or NaN).
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accumulate
public JSONObject accumulate(java.lang.String name, java.lang.Object value) throws JSONException
Appendsvalue
to the array already mapped toname
. If this object has no mapping forname
, this inserts a new mapping. If the mapping exists but its value is not an array, the existing and new values are inserted in order into a new array which is itself mapped toname
. In aggregate, this allows values to be added to a mapping one at a time. Note thatappend(String, Object)
provides better semantics. In particular, the mapping forname
will always be aJSONArray
. Usingaccumulate
will result in either aJSONArray
or a mapping whose type is the type ofvalue
depending on the number of calls to it.- Parameters:
name
- The name of the field to change.value
- aJSONObject
,JSONArray
, String, Boolean, Integer, Long, Double,NULL
or null. May not beNaNs
orinfinities
.- Returns:
- this object after mutation.
- Throws:
JSONException
- If the object being added is an invalid number.
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append
public JSONObject append(java.lang.String name, java.lang.Object value) throws JSONException
Appends values to the array mapped toname
. A newJSONArray
mapping forname
will be inserted if no mapping exists. If the existing mapping forname
is not aJSONArray
, aJSONException
will be thrown.- Parameters:
name
- The name of the array to which the value should be appended.value
- The value to append.- Returns:
- this object.
- Throws:
JSONException
- ifname
isnull
or if the mapping forname
is non-null and is not aJSONArray
.
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checkName
java.lang.String checkName(java.lang.String name) throws JSONException
- Throws:
JSONException
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remove
public java.lang.Object remove(java.lang.String name)
Removes the named mapping if it exists; does nothing otherwise.- Parameters:
name
- The name of the mapping to remove.- Returns:
- the value previously mapped by
name
, or null if there was no such mapping.
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isNull
public boolean isNull(java.lang.String name)
Returns true if this object has no mapping forname
or if it has a mapping whose value isNULL
.- Parameters:
name
- The name of the value to check on.- Returns:
- true if the field doesn't exist or is null.
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has
public boolean has(java.lang.String name)
Returns true if this object has a mapping forname
. The mapping may beNULL
.- Parameters:
name
- The name of the value to check on.- Returns:
- true if this object has a field named
name
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get
public java.lang.Object get(java.lang.String name) throws JSONException
Returns the value mapped byname
, or throws if no such mapping exists.- Parameters:
name
- The name of the value to get.- Returns:
- The value.
- Throws:
JSONException
- if no such mapping exists.
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opt
public java.lang.Object opt(java.lang.String name)
Returns the value mapped byname
, or null if no such mapping exists.- Parameters:
name
- The name of the value to get.- Returns:
- The value.
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getBoolean
public boolean getBoolean(java.lang.String name) throws JSONException
Returns the value mapped byname
if it exists and is a boolean or can be coerced to a boolean, or throws otherwise.- Parameters:
name
- The name of the field we want.- Returns:
- The selected value if it exists.
- Throws:
JSONException
- if the mapping doesn't exist or cannot be coerced to a boolean.
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optBoolean
public boolean optBoolean(java.lang.String name)
Returns the value mapped byname
if it exists and is a boolean or can be coerced to a boolean, or false otherwise.- Parameters:
name
- The name of the field we want.- Returns:
- The selected value if it exists.
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optBoolean
public boolean optBoolean(java.lang.String name, boolean fallback)
Returns the value mapped byname
if it exists and is a boolean or can be coerced to a boolean, orfallback
otherwise.- Parameters:
name
- The name of the field we want.fallback
- The value to return if the field isn't there.- Returns:
- The selected value or the fallback.
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getDouble
public double getDouble(java.lang.String name) throws JSONException
Returns the value mapped byname
if it exists and is a double or can be coerced to a double, or throws otherwise.- Parameters:
name
- The name of the field we want.- Returns:
- The selected value if it exists.
- Throws:
JSONException
- if the mapping doesn't exist or cannot be coerced to a double.
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optDouble
public double optDouble(java.lang.String name)
Returns the value mapped byname
if it exists and is a double or can be coerced to a double, orNaN
otherwise.- Parameters:
name
- The name of the field we want.- Returns:
- The selected value if it exists.
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optDouble
public double optDouble(java.lang.String name, double fallback)
Returns the value mapped byname
if it exists and is a double or can be coerced to a double, orfallback
otherwise.- Parameters:
name
- The name of the field we want.fallback
- The value to return if the field isn't there.- Returns:
- The selected value or the fallback.
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getInt
public int getInt(java.lang.String name) throws JSONException
Returns the value mapped byname
if it exists and is an int or can be coerced to an int, or throws otherwise.- Parameters:
name
- The name of the field we want.- Returns:
- The selected value if it exists.
- Throws:
JSONException
- if the mapping doesn't exist or cannot be coerced to an int.
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optInt
public int optInt(java.lang.String name)
Returns the value mapped byname
if it exists and is an int or can be coerced to an int, or 0 otherwise.- Parameters:
name
- The name of the field we want.- Returns:
- The selected value if it exists.
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optInt
public int optInt(java.lang.String name, int fallback)
Returns the value mapped byname
if it exists and is an int or can be coerced to an int, orfallback
otherwise.- Parameters:
name
- The name of the field we want.fallback
- The value to return if the field isn't there.- Returns:
- The selected value or the fallback.
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getLong
public long getLong(java.lang.String name) throws JSONException
Returns the value mapped byname
if it exists and is a long or can be coerced to a long, or throws otherwise. Note that JSON represents numbers as doubles, so this is lossy; use strings to transfer numbers via JSON without loss.- Parameters:
name
- The name of the field that we want.- Returns:
- The value of the field.
- Throws:
JSONException
- if the mapping doesn't exist or cannot be coerced to a long.
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optLong
public long optLong(java.lang.String name)
Returns the value mapped byname
if it exists and is a long or can be coerced to a long, or 0 otherwise. Note that JSON represents numbers as doubles, so this is lossy; use strings to transfer numbers via JSON.- Parameters:
name
- The name of the field we want.- Returns:
- The selected value.
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optLong
public long optLong(java.lang.String name, long fallback)
Returns the value mapped byname
if it exists and is a long or can be coerced to a long, orfallback
otherwise. Note that JSON represents numbers as doubles, so this is lossy; use strings to transfer numbers via JSON.- Parameters:
name
- The name of the field we want.fallback
- The value to return if the field isn't there.- Returns:
- The selected value or the fallback.
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getString
public java.lang.String getString(java.lang.String name) throws JSONException
Returns the value mapped byname
if it exists, coercing it if necessary, or throws if no such mapping exists.- Parameters:
name
- The name of the field we want.- Returns:
- The value of the field.
- Throws:
JSONException
- if no such mapping exists.
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optString
public java.lang.String optString(java.lang.String name)
Returns the value mapped byname
if it exists, coercing it if necessary, or the empty string if no such mapping exists.- Parameters:
name
- The name of the field we want.- Returns:
- The value of the field.
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optString
public java.lang.String optString(java.lang.String name, java.lang.String fallback)
Returns the value mapped byname
if it exists, coercing it if necessary, orfallback
if no such mapping exists.- Parameters:
name
- The name of the field that we want.fallback
- The value to return if the field doesn't exist.- Returns:
- The value of the field or fallback.
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getJSONArray
public JSONArray getJSONArray(java.lang.String name) throws JSONException
Returns the value mapped byname
if it exists and is aJSONArray
, or throws otherwise.- Parameters:
name
- The field we want to get.- Returns:
- The value of the field (if it is a JSONArray.
- Throws:
JSONException
- if the mapping doesn't exist or is not aJSONArray
.
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optJSONArray
public JSONArray optJSONArray(java.lang.String name)
Returns the value mapped byname
if it exists and is aJSONArray
, or null otherwise.- Parameters:
name
- The name of the field we want.- Returns:
- The value of the specified field (assuming it is a JSNOArray
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getJSONObject
public JSONObject getJSONObject(java.lang.String name) throws JSONException
Returns the value mapped byname
if it exists and is aJSONObject
, or throws otherwise.- Parameters:
name
- The name of the field that we want.- Returns:
- a specified field value (if it is a JSONObject)
- Throws:
JSONException
- if the mapping doesn't exist or is not aJSONObject
.
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optJSONObject
public JSONObject optJSONObject(java.lang.String name)
Returns the value mapped byname
if it exists and is aJSONObject
, or null otherwise.- Parameters:
name
- The name of the value we want.- Returns:
- The specified value.
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toJSONArray
public JSONArray toJSONArray(JSONArray names) throws JSONException
Returns an array with the values corresponding tonames
. The array contains null for names that aren't mapped. This method returns null ifnames
is either null or empty.- Parameters:
names
- The names of the fields that we want the values for.- Returns:
- The selected values.
- Throws:
JSONException
- On internal errors. Shouldn't happen.
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keys
public java.util.Iterator<java.lang.String> keys()
Returns an iterator of theString
names in this object. The returned iterator supportsremove
, which will remove the corresponding mapping from this object. If this object is modified after the iterator is returned, the iterator's behavior is undefined. The order of the keys is undefined.- Returns:
- an iterator over the keys.
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keySet
public java.util.Set<java.lang.String> keySet()
Returns the set ofString
names in this object. The returned set is a view of the keys in this object.Set.remove(Object)
will remove the corresponding mapping from this object and set iterator behaviour is undefined if this object is modified after it is returned. Seekeys()
.- Returns:
- The names in this object.
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names
public JSONArray names()
Returns an array containing the string names in this object. This method returns null if this object contains no mappings.- Returns:
- the names.
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toString
public java.lang.String toString()
Encodes this object as a compact JSON string, such as:{"query":"Pizza","locations":[94043,90210]}
Note 1: this method will not output any fields with 'null' value. OverrideJSONStringer.entry(java.util.Map.Entry<java.lang.String, java.lang.Object>)
method to have nulls printed. Note 2: this method will suppress any internal exceptions. UsetoString(JSONStringer)
method directly to handle exceptions manually.- Overrides:
toString
in classjava.lang.Object
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toString
public java.lang.String toString(int indentSpaces) throws JSONException
Encodes this object as a human readable JSON string for debugging, such as:{ "query": "Pizza", "locations": [ 94043, 90210 ] }
- Parameters:
indentSpaces
- the number of spaces to indent for each level of nesting.- Returns:
- The string containing the pretty form of this.
- Throws:
JSONException
- On internal errors. Shouldn't happen.
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toString
public java.lang.String toString(JSONStringer stringer) throws JSONException
Encodes this object usingJSONStringer
provided- Parameters:
stringer
- -JSONStringer
to be used for serialization- Returns:
- The string representation of this.
- Throws:
JSONException
- On internal errors. Shouldn't happen.
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encode
protected void encode(JSONStringer stringer) throws JSONException
Encodes this object usingJSONStringer
provided- Parameters:
stringer
- -JSONStringer
to be used for serialization- Throws:
JSONException
- On internal errors. Shouldn't happen.
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numberToString
public static java.lang.String numberToString(java.lang.Number number) throws JSONException
Encodes the number as a JSON string.- Parameters:
number
- a finite value. May not beNaNs
orinfinities
.- Returns:
- The encoded number in string form.
- Throws:
JSONException
- On internal errors. Shouldn't happen.
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quote
public static java.lang.String quote(java.lang.String data)
Encodesdata
as a JSON string. This applies quotes and any necessary character escaping.- Parameters:
data
- the string to encode. Null will be interpreted as an empty string.- Returns:
- the quoted string.
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wrap
public static java.lang.Object wrap(java.lang.Object o)
Wraps the given object if necessary.If the object is null or , returns
NULL
. If the object is aJSONArray
orJSONObject
, no wrapping is necessary. If the object isNULL
, no wrapping is necessary. If the object is an array orCollection
, returns an equivalentJSONArray
. If the object is aMap
, returns an equivalentJSONObject
. If the object is a primitive wrapper type orString
, returns the object. If the object is from ajava
package, returns the result oftoString
. If the object is some other kind of object then it is assumed to be a bean and is converted to a JSONObject. If wrapping fails, returns null.- Parameters:
o
- The object to wrap.- Returns:
- The wrapped (if necessary) form of the object {$code o}
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