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一、添加依赖
build.gradle.kts(:app)
- // gson数据解析
- implementation("com.google.code.gson:gson:2.8.6")
对象类:
- // 对象类
- class Account {
- var uid:String = "00001"
- var userName:String = "Freeman"
- var password:String = "admin"
- var telNumber:String = "13000000000"
-
- override fun toString(): String {
- return "Account(uid='$uid', userName='$userName', password='$password', telNumber='$telNumber')"
- }
- }
JSON和对象互相转换:
- // 测试所需json字符串
- val json = "{\"uid\":\"00001\",\"userName\":\"Freeman\",\"telNumber\":\"13000000000\"}"
-
- /**
- * JSON转换为对象
- * */
- val gson = Gson()
- val account = gson.fromJson<Account>(json,Account::class.java)
- println("json转换为对象:${account.toString()}")
-
- /**
- * 对象转换为JSON
- * */
- val accountJson:String = gson.toJson(account)
- println("对象转换为json:${accountJson}")
输出结果:
JSON和集合相互转换:
- // 测试所需json字符串
- val json = "[{\"uid\":\"00001\",\"userName\":\"Freeman\",\"telNumber\":\"13000000000\"}," +
- "{\"uid\":\"00002\",\"userName\":\"man\",\"telNumber\":\"13000000001\"}]"
-
- /**
- * JSON转换为集合
- * */
- val gson = Gson()
- val accountList = gson.fromJson<List<Account>>(json,object:TypeToken<List<Account>>(){}.type)
- println("JSON转换为集合:${accountList}")
- println("集合数:${accountList.size}")
-
- /**
- * 集合转换为JSON
- * */
- val jsonList = gson.toJson(accountList)
- println("集合转换为JSON:${jsonList}")
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