package com.flightfeather.uav.common.utils
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import com.google.gson.Gson
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import com.google.gson.JsonParser
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import java.util.ArrayList
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/**
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* @author riku
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* Date: 2019/4/28
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* GSON序列化工具类
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*/
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object GsonUtils {
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fun getNoteJsonString(jsonString: String, note: String): String {
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if (jsonString.isEmpty()) {
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throw RuntimeException("getNoteJsonString jsonString empty")
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}
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if (note.isEmpty()) {
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throw RuntimeException("getNoteJsonString note empty")
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}
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val element = JsonParser().parse(jsonString)
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if (element.isJsonNull) {
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throw RuntimeException("getNoteJsonString element empty")
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}
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return element.asJsonObject.get(note).toString()
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}
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fun <T> parserJsonToArrayBeans(jsonString: String, note: String, beanClazz: Class<T>): List<T> {
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val noteJsonString = getNoteJsonString(jsonString, note)
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return parserJsonToArrayBeans(noteJsonString, beanClazz)
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}
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fun <T> parserJsonToArrayBeans(jsonString: String, beanClazz: Class<T>): List<T> {
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if (jsonString.isEmpty()) {
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throw RuntimeException("parserJsonToArrayBeans jsonString empty")
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}
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val jsonElement = JsonParser().parse(jsonString)
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if (jsonElement.isJsonNull) {
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throw RuntimeException("parserJsonToArrayBeans jsonElement empty")
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}
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if (!jsonElement.isJsonArray) {
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throw RuntimeException("parserJsonToArrayBeans jsonElement is not JsonArray")
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}
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val jsonArray = jsonElement.asJsonArray
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val beans = ArrayList<T>()
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for (jsonElement2 in jsonArray) {
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val bean = Gson().fromJson(jsonElement2, beanClazz)
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beans.add(bean)
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}
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return beans
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}
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fun <T> parserJsonToBean(jsonString: String, clazzBean: Class<T>): T {
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if (jsonString.isEmpty()) {
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throw RuntimeException("parserJsonToBean jsonString empty")
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}
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val jsonElement = JsonParser().parse(jsonString)
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if (jsonElement.isJsonNull) {
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throw RuntimeException("parserJsonToBean jsonElement empty")
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}
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if (!jsonElement.isJsonObject) {
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throw RuntimeException("parserJsonToBean is not object")
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}
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return Gson().fromJson(jsonElement, clazzBean)
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}
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fun <T> parserJsonToBean(jsonString: String, note: String, clazzBean: Class<T>): T {
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val noteJsonString = getNoteJsonString(jsonString, note)
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return parserJsonToBean(noteJsonString, clazzBean)
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}
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fun toJsonString(obj: Any?): String {
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return if (obj != null) {
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Gson().toJson(obj)
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} else {
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throw RuntimeException("obj could not be empty")
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}
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}
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}
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