org.apache.seatunnel.common.utils

类 JsonUtils

java.lang.Object

org.apache.seatunnel.common.utils.JsonUtils

public class JsonUtils
extends Object

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	JsonUtils.JsonDataDeserializer json data deserializer
static class	JsonUtils.JsonDataSerializer json serializer

方法概要

限定符和类型	方法和说明
static org.apache.seatunnel.shade.com.fasterxml.jackson.databind.node.ArrayNode	createArrayNode()
static org.apache.seatunnel.shade.com.fasterxml.jackson.databind.node.ObjectNode	createObjectNode()
static String	findValue(org.apache.seatunnel.shade.com.fasterxml.jackson.databind.JsonNode jsonNode, String fieldName) Method for finding a JSON Object field with specified name in this node or its child nodes, and returning value it has.
static org.apache.seatunnel.shade.com.fasterxml.jackson.databind.node.ArrayNode	parseArray(String text)
static org.apache.seatunnel.shade.com.fasterxml.jackson.databind.node.ObjectNode	parseObject(byte[] content)
static org.apache.seatunnel.shade.com.fasterxml.jackson.databind.node.ObjectNode	parseObject(String text)
static <T> T	parseObject(String json, Class<T> clazz) This method deserializes the specified Json into an object of the specified class.
static <T> T	parseObject(String json, org.apache.seatunnel.shade.com.fasterxml.jackson.core.type.TypeReference<T> type) json to object
static org.apache.seatunnel.shade.com.fasterxml.jackson.databind.JsonNode	stringToJsonNode(String obj)
static org.apache.seatunnel.shade.com.fasterxml.jackson.databind.JsonNode	toJsonNode(Object obj)
static String	toJsonString(Object object) object to json string
static String	toJsonString(Object object, org.apache.seatunnel.shade.com.fasterxml.jackson.databind.SerializationFeature feature) json representation of object
static <T> List<T>	toList(String json, Class<T> clazz) json to list
static Map<String,Object>	toMap(org.apache.seatunnel.shade.com.fasterxml.jackson.databind.JsonNode jsonNode)
static Map<String,String>	toMap(String json) json to map toMap(String, Class, Class)
static <K,V> Map<K,V>	toMap(String json, Class<K> classK, Class<V> classV) json to map
static Map<String,String>	toStringMap(org.apache.seatunnel.shade.com.fasterxml.jackson.databind.JsonNode jsonNode)

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

方法详细资料

createArrayNode

public static org.apache.seatunnel.shade.com.fasterxml.jackson.databind.node.ArrayNode createArrayNode()

createObjectNode

public static org.apache.seatunnel.shade.com.fasterxml.jackson.databind.node.ObjectNode createObjectNode()

toJsonNode

public static org.apache.seatunnel.shade.com.fasterxml.jackson.databind.JsonNode toJsonNode(Object obj)

stringToJsonNode

public static org.apache.seatunnel.shade.com.fasterxml.jackson.databind.JsonNode stringToJsonNode(String obj)
                                                                                           throws org.apache.seatunnel.shade.com.fasterxml.jackson.core.JsonProcessingException

抛出:

org.apache.seatunnel.shade.com.fasterxml.jackson.core.JsonProcessingException

toJsonString

public static String toJsonString(Object object,
                                  org.apache.seatunnel.shade.com.fasterxml.jackson.databind.SerializationFeature feature)

json representation of object

参数:

object - object

feature - feature

返回:

object to json string

parseObject

public static <T> T parseObject(String json,
                                Class<T> clazz)

This method deserializes the specified Json into an object of the specified class. It is not suitable to use if the specified class is a generic type since it will not have the generic type information because of the Type Erasure feature of Java. Therefore, this method should not be used if the desired type is a generic type. Note that this method works fine if the any of the fields of the specified object are generics, just the object itself should not be a generic type.

类型参数:

T - T

参数:

json - the string from which the object is to be deserialized

clazz - the class of T

返回:

an object of type T from the string classOfT

toList

public static <T> List<T> toList(String json,
                                 Class<T> clazz)

json to list

类型参数:

T - T

参数:

json - json string

clazz - class

返回:

list

findValue

public static String findValue(org.apache.seatunnel.shade.com.fasterxml.jackson.databind.JsonNode jsonNode,
                               String fieldName)

Method for finding a JSON Object field with specified name in this node or its child nodes, and returning value it has. If no matching field is found in this node or its descendants, returns null.

参数:

jsonNode - json node

fieldName - Name of field to look for

返回:

Value of first matching node found, if any; null if none

toMap

public static Map<String,String> toMap(String json)

json to map toMap(String, Class, Class)

参数:

json - json

返回:

json to map

toMap

public static Map<String,Object> toMap(org.apache.seatunnel.shade.com.fasterxml.jackson.databind.JsonNode jsonNode)

toStringMap

public static Map<String,String> toStringMap(org.apache.seatunnel.shade.com.fasterxml.jackson.databind.JsonNode jsonNode)

toMap

public static <K,V> Map<K,V> toMap(String json,
                                   Class<K> classK,
                                   Class<V> classV)

json to map

类型参数:

K - K

V - V

参数:

json - json

classK - classK

classV - classV

返回:

to map

parseObject

public static <T> T parseObject(String json,
                                org.apache.seatunnel.shade.com.fasterxml.jackson.core.type.TypeReference<T> type)

json to object

类型参数:

T - type

参数:

json - json string

type - type reference

返回:

return parse object

toJsonString

public static String toJsonString(Object object)

object to json string

参数:

object - object

返回:

json string

parseObject

public static org.apache.seatunnel.shade.com.fasterxml.jackson.databind.node.ObjectNode parseObject(String text)

parseObject

public static org.apache.seatunnel.shade.com.fasterxml.jackson.databind.node.ObjectNode parseObject(byte[] content)

parseArray

public static org.apache.seatunnel.shade.com.fasterxml.jackson.databind.node.ArrayNode parseArray(String text)