me.hao0.common.json

Class Jsons

java.lang.Object

me.hao0.common.json.Jsons

public class Jsons
extends Object

Json Util based on Jackson Author: haolin On: 11/8/14

Field Summary

Fields

Modifier and Type	Field and Description
static Jsons	DEFAULT 默认不排除任何属性
static Jsons	EXCLUDE_DEFAULT 忽略对象中值为默认值的属性
static Jsons	EXCLUDE_EMPTY 忽略对象中值为NULL或""的属性

Method Summary

Methods

Modifier and Type	Method and Description
com.fasterxml.jackson.databind.JavaType	createCollectionType(Class<?> collectionClass, Class<?>... elementClasses) construct collection type
<T> T	fromJson(String json, Class<T> target) deserialize a json to target class object
<T> T	fromJson(String jsonString, com.fasterxml.jackson.databind.JavaType javaType) 反序列化
String	toJson(Object target) convert an object(POJO, Collection, ...) to json string

Methods inherited from class java.lang.Object

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

Field Detail

EXCLUDE_EMPTY

public static final Jsons EXCLUDE_EMPTY

忽略对象中值为NULL或""的属性

EXCLUDE_DEFAULT

public static final Jsons EXCLUDE_DEFAULT

忽略对象中值为默认值的属性

DEFAULT

public static final Jsons DEFAULT

默认不排除任何属性

Method Detail

toJson

public String toJson(Object target)

convert an object(POJO, Collection, ...) to json string

Parameters:

target - target object

Returns:

json string

Throws:

JsonException - the exception for json

fromJson

public <T> T fromJson(String json,
             Class<T> target)

deserialize a json to target class object

Type Parameters:

T - the generic type

Parameters:

json - json string

target - target class

Returns:

target object

Throws:

JsonException - the exception for json

fromJson

public <T> T fromJson(String jsonString,
             com.fasterxml.jackson.databind.JavaType javaType)

反序列化

Type Parameters:

T - the generic type

Parameters:

javaType - JavaType

jsonString - json string

Returns:

the javaType's object

Throws:

JsonException - the exception for json

See Also:

createCollectionType(Class, Class...)

createCollectionType

public com.fasterxml.jackson.databind.JavaType createCollectionType(Class<?> collectionClass,
                                                           Class<?>... elementClasses)

construct collection type

Parameters:

collectionClass - collection class, such as ArrayList, HashMap, ...

elementClasses - element class

Returns:

JavaType