public class JSONRPC2Request extends JSONRPC2Message
A request carries four pieces of data:
method The name of the remote method to call.
params The required method parameters (if any), which can
be packed into a JSON array or object.
id An identifier which is echoed back to the client with
the response.
jsonrpc A string indicating the JSON-RPC protocol version
set to "2.0".
Here is a sample JSON-RPC 2.0 request string:
{
"method" : "makePayment",
"params" : { "recipient" : "Penny Adams", "amount":175.05 },
"id" : "0001",
"jsonrpc" : "2.0"
}
This class provides two methods to obtain a request object:
parse(java.lang.String) method, or
Example 1: Parsing a request string:
String jsonString = "{\"method\":\"makePayment\"," +
"\"params\":{\"recipient\":\"Penny Adams\",\"amount\":175.05}," +
"\"id\":\"0001\","+
"\"jsonrpc\":\"2.0\"}";
JSONRPC2Request req = null;
try {
req = JSONRPC2Request.parse(jsonString);
} catch (JSONRPC2ParseException e) {
// handle exception
}
Example 2: Recreating the above request:
String method = "makePayment";
Map<String,Object> params = new HashMap<String,Object>();
params.put("recipient", "Penny Adams");
params.put("amount", 175.05);
String id = "0001";
JSONRPC2Request req = new JSONRPC2Request(method, params, id);
System.out.println(req);
The mapping between JSON and Java entities (as defined by the underlying JSON Smart library):
true|false <---> java.lang.Boolean
number <---> java.lang.Number
string <---> java.lang.String
array <---> java.util.List
object <---> java.util.Map
null <---> null
| Constructor and Description |
|---|
JSONRPC2Request(String method,
List<Object> positionalParams,
Object id)
Constructs a new JSON-RPC 2.0 request with positional (JSON array)
parameters.
|
JSONRPC2Request(String method,
Map<String,Object> namedParams,
Object id)
Constructs a new JSON-RPC 2.0 request with named (JSON object)
parameters.
|
JSONRPC2Request(String method,
Object id)
Constructs a new JSON-RPC 2.0 request with no parameters.
|
| Modifier and Type | Method and Description |
|---|---|
Object |
getID()
Gets the request identifier.
|
String |
getMethod()
Gets the name of the requested method.
|
Map<String,Object> |
getNamedParams()
Gets the named parameters.
|
Object |
getParams()
Deprecated.
|
JSONRPC2ParamsType |
getParamsType()
|
List<Object> |
getPositionalParams()
Gets the positional (JSON array) parameters.
|
static JSONRPC2Request |
parse(String jsonString)
Parses a JSON-RPC 2.0 request string.
|
static JSONRPC2Request |
parse(String jsonString,
boolean preserveOrder)
Parses a JSON-RPC 2.0 request string.
|
static JSONRPC2Request |
parse(String jsonString,
boolean preserveOrder,
boolean ignoreVersion)
Parses a JSON-RPC 2.0 request string.
|
static JSONRPC2Request |
parse(String jsonString,
boolean preserveOrder,
boolean ignoreVersion,
boolean parseNonStdAttributes)
Parses a JSON-RPC 2.0 request string.
|
void |
setID(Object id)
Sets the request identifier (ID).
|
void |
setMethod(String method)
Sets the name of the requested method.
|
void |
setNamedParams(Map<String,Object> namedParams)
Sets the named (JSON object) request parameters.
|
void |
setParams(Object params)
Deprecated.
|
void |
setPositionalParams(List<Object> positionalParams)
Sets the positional (JSON array) request parameters.
|
JsonObject |
toJSONObject()
Returns a JSON object representing this JSON-RPC 2.0 message.
|
appendNonStdAttribute, getNonStdAttribute, getNonStdAttributes, toJSONString, toStringpublic JSONRPC2Request(String method, List<Object> positionalParams, Object id)
method - The name of the requested method. Must not
be null.positionalParams - The positional (JSON array) parameters,
null if none.id - The request identifier echoed back to the
caller. The value must map
to a JSON scalar (null and
fractions, however, should be avoided).public JSONRPC2Request(String method, Map<String,Object> namedParams, Object id)
method - The name of the requested method.namedParams - The named (JSON object) parameters, null
if none.id - The request identifier echoed back to the caller.
The value must map to a JSON
scalar (null and fractions, however,
should be avoided).public JSONRPC2Request(String method, Object id)
method - The name of the requested method. Must not be
null.id - The request identifier echoed back to the caller.
The value must map to a JSON
scalar (null and fractions, however, should
be avoided).public Object getID()
Number, Boolean,
String) or null.public String getMethod()
public Map<String,Object> getNamedParams()
null if none or
positional.@Deprecated public Object getParams()
This method was deprecated in version 1.30. Use
getPositionalParams() or getNamedParams() instead.
List<Object> for positional
(JSON array), Map<String,Object> for named
(JSON object), or null if none.public JSONRPC2ParamsType getParamsType()
public List<Object> getPositionalParams()
null if none
or named.public static JSONRPC2Request parse(String jsonString) throws JSONRPC2ParseException
jsonString - The JSON-RPC 2.0 request string, UTF-8 encoded.
Must not be null.JSONRPC2ParseException - With detailed message if parsing
failed.public static JSONRPC2Request parse(String jsonString, boolean preserveOrder) throws JSONRPC2ParseException
jsonString - The JSON-RPC 2.0 request string, UTF-8 encoded.
Must not be null.preserveOrder - true to preserve the order of JSON
object members in parameters.JSONRPC2ParseException - With detailed message if parsing
failed.public static JSONRPC2Request parse(String jsonString, boolean preserveOrder, boolean ignoreVersion) throws JSONRPC2ParseException
jsonString - The JSON-RPC 2.0 request string, UTF-8 encoded.
Must not be null.preserveOrder - true to preserve the order of JSON
object members in parameters.ignoreVersion - true to skip a check of the
"jsonrpc":"2.0" version attribute in the
JSON-RPC 2.0 message.JSONRPC2ParseException - With detailed message if parsing
failed.public static JSONRPC2Request parse(String jsonString, boolean preserveOrder, boolean ignoreVersion, boolean parseNonStdAttributes) throws JSONRPC2ParseException
jsonString - The JSON-RPC 2.0 request string, UTF-8
encoded. Must not be null.preserveOrder - true to preserve the order of
JSON object members in parameters.ignoreVersion - true to skip a check of the
"jsonrpc":"2.0" version
attribute in the JSON-RPC 2.0 message.parseNonStdAttributes - true to parse non-standard
attributes found in the JSON-RPC 2.0
message.JSONRPC2ParseException - With detailed message if parsing
failed.public void setID(Object id)
id - The request identifier echoed back to the caller.
The value must map to a JSON
scalar (null and fractions, however, should
be avoided).public void setMethod(String method)
method - The method name. Must not be null.public void setNamedParams(Map<String,Object> namedParams)
namedParams - The named (JSON object) request parameters,
null if none.@Deprecated public void setParams(Object params)
This method was deprecated in version 1.30. Use
setPositionalParams(java.util.List<java.lang.Object>) or setNamedParams(java.util.Map<java.lang.String, java.lang.Object>) instead.
params - The parameters. For positional (JSON array) pass a
List<Object>. For named (JSON object)
pass a Map<String,Object>. If there are
no parameters pass null.public void setPositionalParams(List<Object> positionalParams)
positionalParams - The positional (JSON array) request
parameters, null if none.public JsonObject toJSONObject()
JSONRPC2MessagetoJSONObject in class JSONRPC2Message