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發表者： 冷日 發表時間： 2019/4/5 15:03:19
Fastjson API中文版
由 路飛 創建， 最後一次修改 2016-12-11
Fastjson API中文版
JSON這個類是fastjson API的入口，主要的功能都通過這個類提供。
序列化API
package com.alibaba.fastjson;
public abstract class JSON {
// 將Java對像序列化為JSON字符串，支持各種各種Java基本類型和JavaBean
public static String toJSONString(Object object, SerializerFeature... features);
// 將Java對像序列化為JSON字符串，返回JSON字符串的utf-8 bytes
public static byte[] toJSONBytes(Object object, SerializerFeature... features);
// 將Java對像序列化為JSON字符串，寫入到Writer中
public static void writeJSONString(Writer writer,
Object object,
SerializerFeature... features);
// 將Java對像序列化為JSON字符串，按UTF-8編碼寫入到OutputStream中
public static final int writeJSONString(OutputStream os, //
Object object, //
SerializerFeature... features);
}
JSON字符串反序列化API
package com.alibaba.fastjson;
public abstract class JSON {
// 將JSON字符串反序列化為JavaBean
public static <T> T parseObject(String jsonStr,
Class<T> clazz,
Feature... features);
// 將JSON字符串反序列化為JavaBean
public static <T> T parseObject(byte[] jsonBytes, // UTF-8格式的JSON字符串
Class<T> clazz,
Feature... features);
// 將JSON字符串反序列化為泛型類型的JavaBean
public static <T> T parseObject(String text,
TypeReference<T> type,
Feature... features);
// 將JSON字符串反序列為JSONObject
public static JSONObject parseObject(String text);
}
Demo
parse Tree
import com.alibaba.fastjson.*;
JSONObject jsonObj = JSON.parseObject(jsonStr);
parse POJO
import com.alibaba.fastjson.JSON;
Model model = JSON.parseObject(jsonStr, Model.class);
parse POJO Generic
import com.alibaba.fastjson.JSON;
Type type = new TypeReference<List<Model>>() {}.getType();
List<Model> list = JSON.parseObject(jsonStr, type);
convert POJO to json string
import com.alibaba.fastjson.JSON;
Model model = ...;
String jsonStr = JSON.toJSONString(model);
convert POJO to json bytes
import com.alibaba.fastjson.JSON;
Model model = ...;
byte[] jsonBytes = JSON.toJSONBytes(model);
write POJO as json string to OutputStream
import com.alibaba.fastjson.JSON;
Model model = ...;
OutputStream os;
JSON.writeJSONString(os, model);
write POJO as json string to Writer
import com.alibaba.fastjson.JSON;
Model model = ...;
Writer writer = ...;
JSON.writeJSONString(writer, model);
原文出處：Fastjson API中文版_w3cschool