package com.xinwei.util;
import java.lang.reflect.Type;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Map;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonParseException;
import com.google.gson.JsonPrimitive;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;
import com.google.gson.reflect.TypeToken;
public class JsonUtil{
// 支持转换的日期格式
public static final DateFormat[] ACCEPT_DATE_FORMATS = {
new SimpleDateFormat("MM/dd/yyyy"),
new SimpleDateFormat("MM/dd/yyyy HH:mm:ss"),
new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"),
new SimpleDateFormat("yyyy/MM/dd HH:mm:ss")
};
/**
* 将对象序列化为json字符串,只对有@expose注解的进行序列化
* @param obj
* @return
*/
public static String toJsonWithExclusive(Object obj){
Gson gson = new GsonBuilder().excludeFieldsWithoutExposeAnnotation()
.registerTypeAdapter(Date.class, new MyDateSerializer())
.create();
String json = gson.toJson(obj);
return json;
}
/**
* 将对象序列化为json字符串，不区分注解
* @param obj
* @return
*/
public static String toJson(Object obj){
Gson gson = new GsonBuilder().registerTypeAdapter(Date.class, new MyDateSerializer())
.create();
String json = gson.toJson(obj);
return json;
}
public static String toJsonFilterEquals(Object obj){
Gson gson = new GsonBuilder().disableHtmlEscaping().create();
String json = gson.toJson(obj);
return json;
}
/**
* 将对象序列化为json字符串，不区分注解
* @param obj
* @return
*/
public static String toJson0(Object obj){
String json = toJson(obj, Date.class, new MyTimestampSerializer());
return json;
}
/**
* 将对象序列化为json字符串，不区分注解
* @param obj
* @return
*/
@SuppressWarnings("rawtypes")
public static String toJson(Object obj,Class clazz,JsonSerializer serializer){
Gson gson = new GsonBuilder().registerTypeAdapter(clazz, serializer)
.create();
String json = gson.toJson(obj);
return json;
}
/**
* 将json字符串反序列化为对象,不区分注解
* @param jsonStr
* @param classOfT
* @return
*/
@SuppressWarnings("unchecked")
public static <T> T fromJson(String jsonStr,Type type){
Gson gson = new GsonBuilder().registerTypeAdapter(Date.class, new MyDateDeserializer())
.create();
return (T)gson.fromJson(jsonStr, type);
}
/**
* 将json字符串反序列化为对象,区分注解
* @param jsonStr
* @param classOfT
* @return
*/
@SuppressWarnings("unchecked")
public static <T> T fromJsonWithExclusive(String jsonStr,Type type){
Gson gson = new GsonBuilder().excludeFieldsWithoutExposeAnnotation()
.registerTypeAdapter(Date.class, new MyDateDeserializer())
.create();
return (T)gson.fromJson(jsonStr, type);
}
@SuppressWarnings("rawtypes")
public static Map fromJson(String jsonStr){
Type type = new TypeToken<Map>(){}.getType();
Gson gson = new Gson();
return gson.fromJson(jsonStr, type);
}
/**
* date类型反序列化器
* @author jiweibin
*
*/
private static class MyDateDeserializer implements JsonDeserializer<Date>{
public Date deserialize(JsonElement json, Type typeOfT,
JsonDeserializationContext context) throws JsonParseException {
// 遍历日期支持格式，进行转换
for (DateFormat format : ACCEPT_DATE_FORMATS) {
try {
return format.parse(json.getAsString());
} catch (Exception e) {
continue;
}
}
return null;
/* SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
try {
return sdf.parse(json.getAsString());
} catch (ParseException e) {
e.printStackTrace();
}
return null;*/
}
}
/**
* timestamp类型反序列化器
* @author jiweibin
*
*/
private static class MyTimestampSerializer implements JsonSerializer<Date>{
public JsonElement serialize(Date src, Type typeOfSrc,
JsonSerializationContext context) {
SimpleDateFormat sdf = new SimpleDateFormat("MM/dd/yyyy HH:mm:ss");
return new JsonPrimitive(sdf.format(src));
}
}
/**
* date类型序列化器
* @author jiweibin
*
*/
private static class MyDateSerializer implements JsonSerializer<Date>{
public JsonElement serialize(Date src, Type typeOfSrc,
JsonSerializationContext context) {
SimpleDateFormat sdf = new SimpleDateFormat("MM/dd/yyyy HH:mm:ss");
return new JsonPrimitive(sdf.format(src));
}
}
public static void main(String[] args){
/*String json = "{'name': 'helloworlda','array':[{'a':'111','b':'222','c':'333'},{'a':'999'}],'address':'111','people':{'name':'happ','sex':'girl'}}";
JsonUtil.fromJson(json, JsonUtil.class);*/
Date date = new Date();
String dateStr = JsonUtil.toJson(date);
System.out.println(dateStr);
}
}
{"phoneNumber":"567768","deviceId":"08277599","deviceName":"PP399","alarmId":"201711160408","smcDesc":"您有一条工单未处理，请及时处理alarmId：201711160408","dataId":"2017112000060000489","detailUrl":"http://localhost:8080/workorderms/views/orderms/workorderDetail.html?fromu003dfinish.htmlu0026stateu003du0026groupIdu003d201711160408u0026procInstIdu003d30472u0026taskIdu003d30512"}
{"phoneNumber":"45645656","deviceId":"08277588","deviceName":"PP388","alarmId":"201711160405","smcDesc":"您有一条工单未处理，请及时处理alarmId：201711160405","dataId":"2017112000130000496","detailUrl":"http://localhost:8080/workorderms/views/orderms/workorderDetail.html?from=finish.html&state=&groupId=201711160405&procInstId=30450&taskId=30748"