Fastjson Api Compare

2022-05-06 15:13 更新

License & Project URL

  License URL
Fastjson Apaceh 2.0 https://github.com/alibaba/fastjson
Gson Apaceh 2.0 https://github.com/google/gson
Jackson Apaceh 2.0 https://github.com/FasterXML/jackson-core

Maven

fastjson

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.2.11</version>
</dependency>

fastjson-android

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.1.51.android</version>
</dependency>

jackson

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.7.3</version>
</dependency>

gson

<dependency>
    <groupId>com.google.code.gson</groupId>
    <artifactId>gson</artifactId>
    <version>2.6.2</version>
</dependency>

API

Fastjson parse Tree

import com.alibaba.fastjson.*;

JSONObject jsonObj = JSON.parseObject(jsonStr);

Fastjson parse POJO

import com.alibaba.fastjson.JSON;

Model model = JSON.parseObject(jsonStr, Model.class);

Fastjson parse POJO Generic

import com.alibaba.fastjson.JSON;

Type type = new TypeReference<List<Model>>() {}.getType(); 
List<Model> list = JSON.parseObject(jsonStr, type);

Fastjson convert POJO to json string

import com.alibaba.fastjson.JSON;

Model model = ...; 
String jsonStr = JSON.toJSONString(model);

Fastjson convert POJO to json bytes

import com.alibaba.fastjson.JSON;

Model model = ...; 
byte[] jsonBytes = JSON.toJSONBytes(model);

Fastjson write POJO as json string to OutputStream

import com.alibaba.fastjson.JSON;

Model model = ...; 
OutputStream os;
JSON.writeJSONString(os, model);

Fastjson write POJO as json string to Writer

import com.alibaba.fastjson.JSON;

Model model = ...; 
Writer writer = ...;
JSON.writeJSONString(writer, model);


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