public class JSON extends Object
The JSONIC JSON class provides JSON encoding and decoding as defined by RFC 4627.
The following example illustrates how to encode and decode. The code:
// encodes a object into a json string. String s = JSON.encode(o); // decodes a json string into a object. Object o = JSON.decode(s); // decodes a json string into a typed object. Foo foo = JSON.decode(s, Foo.class);
Advanced topic:
// formats a object into a json string with indents for debug.
JSON json = new JSON();
json.setPrettyPrint(true);
String pretty = json.format(o);
//uses Reader/InputStream
Bar bar = JSON.decode(new FileInputStream("bar.json"), Bar.class);
Bar bar = JSON.decode(new FileReader("bar.json"), Bar.class);
| java type | json type |
|---|---|
| java.util.Map | object |
| java.lang.Object (public property or field) | |
| java.lang.Object[] | array |
| java.util.Collection | |
| boolean[], short[], int[], long[], float[], double[] | |
| java.lang.CharSequence | string |
| char[] | |
| java.lang.Character | |
| char | |
| java.util.TimeZone | |
| java.util.regex.Pattern | |
| java.lang.reflect.Type | |
| java.lang.reflect.Member | |
| java.net.URI | |
| java.net.URL | |
| byte[] | string (base64) |
| java.util.Locale | string (language-country) |
| java.lang.Number | number |
| byte, short, int, long, float, double | |
| java.util.Date | number (milliseconds since 1970) |
| java.util.Calendar | |
| java.lang.Boolean | true/false |
| boolean | |
| null | null |
| json type | java type |
|---|---|
| object | java.util.LinkedHashMap |
| array | java.util.ArrayList |
| string | java.lang.String |
| number | java.math.BigDecimal |
| true/false | java.lang.Boolean |
| null | null |
| Modifier and Type | Class and Description |
|---|---|
class |
JSON.Context |
static class |
JSON.Mode
JSON processing mode
|
| Modifier and Type | Field and Description |
|---|---|
static Class<? extends JSON> |
prototype
Setup your custom class for using static method.
|
| Constructor and Description |
|---|
JSON() |
JSON(int maxDepth) |
JSON(JSON.Mode mode) |
| Modifier and Type | Method and Description |
|---|---|
Object |
convert(Object value,
Type type) |
protected <T> T |
create(JSON.Context context,
Class<? extends T> c) |
static <T> T |
decode(InputStream in)
Decodes a json stream into a object.
|
static <T> T |
decode(InputStream in,
Class<? extends T> cls)
Decodes a json stream into a object.
|
static <T> T |
decode(InputStream in,
Type type)
Decodes a json stream into a object.
|
static <T> T |
decode(Reader reader)
Decodes a json stream into a object.
|
static <T> T |
decode(Reader reader,
Class<? extends T> cls)
Decodes a json stream into a object.
|
static <T> T |
decode(Reader reader,
Type type)
Decodes a json stream into a object.
|
static <T> T |
decode(String source)
Decodes a json string into a object.
|
static <T> T |
decode(String source,
Class<? extends T> cls)
Decodes a json string into a typed object.
|
static <T> T |
decode(String source,
Type type)
Decodes a json string into a typed object.
|
static String |
encode(Object source)
Encodes a object into a json string.
|
static void |
encode(Object source,
Appendable appendable)
Encodes a object into a json string.
|
static void |
encode(Object source,
Appendable appendable,
boolean prettyPrint)
Encodes a object into a json string.
|
static String |
encode(Object source,
boolean prettyPrint)
Encodes a object into a json string.
|
static void |
encode(Object source,
OutputStream out)
Encodes a object into a json string.
|
static void |
encode(Object source,
OutputStream out,
boolean prettyPrint)
Encodes a object into a json string.
|
static String |
escapeScript(Object source)
Escapes a object into JavaScript format.
|
static void |
escapeScript(Object source,
Appendable appendable)
Escapes a object into JavaScript format.
|
static void |
escapeScript(Object source,
OutputStream out)
Escapes a object into JavaScript format.
|
String |
format(Object source)
Format a object into a json string.
|
Appendable |
format(Object source,
Appendable ap)
Format a object into a json string.
|
OutputStream |
format(Object source,
OutputStream out)
Format a object into a json string.
|
int |
getMaxDepth()
Gets maximum depth for the nest depth.
|
JSON.Mode |
getMode()
Gets JSON interpreter mode.
|
JSONReader |
getReader(CharSequence cs) |
JSONReader |
getReader(CharSequence cs,
boolean ignoreWhitespace) |
JSONReader |
getReader(InputStream in) |
JSONReader |
getReader(InputStream in,
boolean ignoreWhitespace) |
JSONReader |
getReader(Reader reader) |
JSONReader |
getReader(Reader reader,
boolean ignoreWhitespace) |
JSONWriter |
getWriter(Appendable ap) |
JSONWriter |
getWriter(OutputStream out) |
protected boolean |
ignore(JSON.Context context,
Class<?> target,
Member member)
Ignore this property.
|
protected String |
normalize(String name) |
<T> T |
parse(CharSequence cs) |
<T> T |
parse(CharSequence s,
Class<? extends T> cls) |
<T> T |
parse(CharSequence cs,
Type type) |
<T> T |
parse(InputStream in) |
<T> T |
parse(InputStream in,
Class<? extends T> cls) |
<T> T |
parse(InputStream in,
Type type) |
<T> T |
parse(Reader reader) |
<T> T |
parse(Reader reader,
Class<? extends T> cls) |
<T> T |
parse(Reader reader,
Type type) |
protected <T> T |
postparse(JSON.Context context,
Object value,
Class<? extends T> cls,
Type type)
Converts Map, List, Number, String, Boolean or null to other Java Objects after parsing.
|
protected Object |
preformat(JSON.Context context,
Object value)
Converts Any Java Object to JSON recognizable Java object before format.
|
void |
setContext(Object value)
Sets context for inner class.
|
void |
setDateFormat(String format)
Sets default Date format.
|
void |
setEnumStyle(NamingStyle style)
Sets default Case style for Enum.
|
void |
setIndentText(String text)
Set indent text for pretty printing.
|
void |
setInitialIndent(int indent)
Set initial indent for pretty printing.
|
void |
setLocale(Locale locale)
Sets locale for formatting, converting and selecting message.
|
void |
setMaxDepth(int value)
Sets maximum depth for the nest depth.
|
void |
setMode(JSON.Mode mode)
Sets JSON interpreter mode.
|
void |
setNumberFormat(String format)
Sets default Number format.
|
void |
setPrettyPrint(boolean value)
Output json string is to human-readable format.
|
void |
setPropertyStyle(NamingStyle style)
Sets default Case style for the property name of JSON object.
|
void |
setSuppressNull(boolean value)
If this property is true, the null value's items of Bean or DynaBean is ignored.
|
void |
setTimeZone(TimeZone timeZone)
Sets timeZone for formatting and converting.
|
static void |
validate(CharSequence cs)
Validates a json text
|
static void |
validate(InputStream in)
Validates a json stream
|
static void |
validate(Reader reader)
Validates a json stream
|
public JSON()
public JSON(int maxDepth)
public JSON(JSON.Mode mode)
public static String encode(Object source) throws JSONException
source - a object to encode.JSONException - if error occurred when formating.public static String encode(Object source, boolean prettyPrint) throws JSONException
source - a object to encode.prettyPrint - output a json string with indent, space or break.JSONException - if error occurred when formating.public static void encode(Object source, OutputStream out) throws IOException, JSONException
source - a object to encode.out - a destination to output a json string.IOException - if I/O Error occurred.JSONException - if error occurred when formating.public static void encode(Object source, OutputStream out, boolean prettyPrint) throws IOException, JSONException
source - a object to encode.out - a destination to output a json string.prettyPrint - output a json string with indent, space or break.IOException - if I/O Error occurred.JSONException - if error occurred when formating.public static void encode(Object source, Appendable appendable) throws IOException, JSONException
source - a object to encode.appendable - a destination to output a json string.IOException - if I/O Error occurred.JSONException - if error occurred when formating.public static void encode(Object source, Appendable appendable, boolean prettyPrint) throws IOException, JSONException
source - a object to encode.appendable - a destination to output a json string.prettyPrint - output a json string with indent, space or break.IOException - if I/O Error occurred.JSONException - if error occurred when formating.public static String escapeScript(Object source) throws JSONException
source - a object to encode.JSONException - if error occurred when formating.public static void escapeScript(Object source, OutputStream out) throws IOException, JSONException
source - a object to encode.out - a destination to output a json string.IOException - if I/O Error occurred.JSONException - if error occurred when formating.public static void escapeScript(Object source, Appendable appendable) throws IOException, JSONException
source - a object to encode.appendable - a destination to output a json string.IOException - if I/O Error occurred.JSONException - if error occurred when formating.public static <T> T decode(String source) throws JSONException
source - a json string to decodeJSONException - if error occurred when parsing.public static <T> T decode(String source, Class<? extends T> cls) throws JSONException
source - a json string to decodecls - class for convertingJSONException - if error occurred when parsing.public static <T> T decode(String source, Type type) throws JSONException
source - a json string to decodetype - type for convertingJSONException - if error occurred when parsing.public static <T> T decode(InputStream in) throws IOException, JSONException
in - a json stream to decodeIOException - if I/O error occurred.JSONException - if error occurred when parsing.public static <T> T decode(InputStream in, Class<? extends T> cls) throws IOException, JSONException
in - a json stream to decodecls - class for convertingIOException - if I/O error occurred.JSONException - if error occurred when parsing.public static <T> T decode(InputStream in, Type type) throws IOException, JSONException
in - a json stream to decodetype - type for convertingIOException - if I/O error occurred.JSONException - if error occurred when parsing.public static <T> T decode(Reader reader) throws IOException, JSONException
reader - a json stream to decodeIOException - if I/O error occurred.JSONException - if error occurred when parsing.public static <T> T decode(Reader reader, Class<? extends T> cls) throws IOException, JSONException
reader - a json stream to decodecls - class for convertingIOException - if I/O error occurred.JSONException - if error occurred when parsing.public static <T> T decode(Reader reader, Type type) throws IOException, JSONException
reader - a json stream to decodetype - type for convertingIOException - if I/O error occurred.JSONException - if error occurred when parsing.public static void validate(CharSequence cs) throws JSONException
cs - source a json string to decodeJSONException - if error occurred when parsing.public static void validate(InputStream in) throws IOException, JSONException
in - source a json string to decodeIOException - if I/O error occurred.JSONException - if error occurred when parsing.public static void validate(Reader reader) throws IOException, JSONException
reader - source a json string to decodeIOException - if I/O error occurred.JSONException - if error occurred when parsing.public void setContext(Object value)
value - context objectpublic void setLocale(Locale locale)
locale - locale for formatting, converting and selecting messagepublic void setTimeZone(TimeZone timeZone)
timeZone - timeZone for formatting and converting.public void setPrettyPrint(boolean value)
value - true to format human-readable, false to shorten.public void setInitialIndent(int indent)
indent - initial indentpublic void setIndentText(String text)
text - indent textpublic void setMaxDepth(int value)
value - maximum depth for the nest depth.public int getMaxDepth()
public void setSuppressNull(boolean value)
value - true to ignore the null value's items of Bean or DynaBean.public void setMode(JSON.Mode mode)
mode - JSON interpreter modepublic JSON.Mode getMode()
public void setDateFormat(String format)
format - default Date formatpublic void setNumberFormat(String format)
format - default Number formatpublic void setPropertyStyle(NamingStyle style)
style - default Case style for keys of JSON object.public void setEnumStyle(NamingStyle style)
style - default Case style for Enum.public String format(Object source)
source - a object to encode.public OutputStream format(Object source, OutputStream out) throws IOException
source - a object to encode.out - a destination to output a json string.IOExceptionpublic Appendable format(Object source, Appendable ap) throws IOException
source - a object to encode.ap - a destination. example: StringBuilder, Writer, ...IOExceptionpublic JSONWriter getWriter(OutputStream out) throws IOException
IOExceptionpublic JSONWriter getWriter(Appendable ap) throws IOException
IOExceptionprotected Object preformat(JSON.Context context, Object value) throws Exception
context - current context.value - source a object to format.Exception - if conversion failed.public <T> T parse(CharSequence cs) throws JSONException
JSONExceptionpublic <T> T parse(CharSequence s, Class<? extends T> cls) throws JSONException
JSONExceptionpublic <T> T parse(CharSequence cs, Type type) throws JSONException
JSONExceptionpublic <T> T parse(InputStream in) throws IOException, JSONException
IOExceptionJSONExceptionpublic <T> T parse(InputStream in, Class<? extends T> cls) throws IOException, JSONException
IOExceptionJSONExceptionpublic <T> T parse(InputStream in, Type type) throws IOException, JSONException
IOExceptionJSONExceptionpublic <T> T parse(Reader reader) throws IOException, JSONException
IOExceptionJSONExceptionpublic <T> T parse(Reader reader, Class<? extends T> cls) throws IOException, JSONException
IOExceptionJSONExceptionpublic <T> T parse(Reader reader, Type type) throws IOException, JSONException
IOExceptionJSONExceptionpublic JSONReader getReader(CharSequence cs)
public JSONReader getReader(InputStream in)
public JSONReader getReader(Reader reader)
public JSONReader getReader(CharSequence cs, boolean ignoreWhitespace)
public JSONReader getReader(InputStream in, boolean ignoreWhitespace)
public JSONReader getReader(Reader reader, boolean ignoreWhitespace)
public Object convert(Object value, Type type) throws JSONException
JSONExceptionprotected <T> T postparse(JSON.Context context, Object value, Class<? extends T> cls, Type type) throws Exception
context - current context.value - null or the instance of Map, List, Number, String or Boolean.cls - class for convertingtype - generic type for converting. type equals to c if not generic.Exception - if conversion failed.protected boolean ignore(JSON.Context context, Class<?> target, Member member)
context - current contexttarget - target classmember - target memberprotected <T> T create(JSON.Context context, Class<? extends T> c) throws Exception
Exception