如何在kotlin中将地图转换为json形式的转义字符串？ [复制]

Question

我有一个 mutableMap，

val invoiceAdditionalAttribute = mutableMapOf<String, Any?>()
invoiceAdditionalAttribute.put("clinetId",12345)
invoiceAdditionalAttribute.put("clientName", "digital")
invoiceAdditionalAttribute.put("payload", "xyz")

我想把它转换成看起来像转义 json 的字符串

输出应该是，

"{\"clinetId\":\"12345\", \"clientName\":\"digital\", \"payload\":\"xyz\"}"

目前，我正在使用 Gson 库，

val json = gson.toJson(invoiceAdditionalAttribute)

输出是

{"clinetId":12345,"clientName":"digital","payload":"xyz"}

Answer 1

在String 类上使用replace 扩展函数：

val invoiceAdditionalAttribute = mutableMapOf<String, Any?>()
invoiceAdditionalAttribute["clinetId"] = 12345.toString()
invoiceAdditionalAttribute["clientName"] = "digital"
invoiceAdditionalAttribute["payload"] = "xyz"

val json = gson.toJson(invoiceAdditionalAttribute)
        .replace("\"", "\\\"")

json 现在包含字符串：

{\"clinetId\":\"12345\",\"clientName\":\"digital\",\"payload\":\"xyz\"}