如何在Java中將json字符串轉換為字節數組

Question

String json="{"FROM_JID":"6bc24cac4eaf304ce1731bd5aebe9b0419052701","TO_JID":"dfc8d53f402373a1d3622dde50e180b388b36bc1","TYPE_ID":"1","PLATFORM":"IOS","CONTENT":"{\"FROM_JID\":\"6bc24cac4eaf304ce1731bd5aebe9b0419052701\",\"FROM_HOST\":\"ssdevim.mtouche-mobile.com\",\"FROM_JNAME\":\"test1\",\"TO_JID\":\"dfc8d53f402373a1d3622dde50e180b388b36bc1\",\"TO_HOST\":\"ssdevim.mtouche-mobile.com\",\"MESSAGE_ID\":\"LiYaU-39\",\"MESSAGE_TYPE\":\"enc\",\"MESSAGE\":\"test1 has sent you an encrypted message.\",\"STAMP\":\"2015-11-12 12:04:54.252241\",\"BADGE\":3,\"CONTENT-AVAILABLE\":1,\"SOUND\":\"dafault\"}","DEVICE_ID":"AC53D4F0-DAAA-475E-9668-5E9E7485797C","PUSH_ID":"c9544c8db2117f02f3edc8af9058b3d54c15500302bf6f47c487193876f6dc23","CREATE_DATE":"2015-11-12","CREATE_TIME":"04:04:54"}";
JSONParser parser = new JSONParser();

Object obj = parser.parse(json);

但顯示錯誤

Answer 1

首先 ，這不會編譯：

String json="{"FROM_JID":"6bc24cac4eaf304ce1731bd5aebe9b0419052701","TO_JID":"dfc8d53f402373a1d3622dde50e180b388b36bc1","TYPE_ID":"1","PLATFORM":"IOS","CONTENT":"{\"FROM_JID\":\"6bc24cac4eaf304ce1731bd5aebe9b0419052701\",\"FROM_HOST\":\"ssdevim.mtouche-mobile.com\",\"FROM_JNAME\":\"test1\",\"TO_JID\":\"dfc8d53f402373a1d3622dde50e180b388b36bc1\",\"TO_HOST\":\"ssdevim.mtouche-mobile.com\",\"MESSAGE_ID\":\"LiYaU-39\",\"MESSAGE_TYPE\":\"enc\",\"MESSAGE\":\"test1 has sent you an encrypted message.\",\"STAMP\":\"2015-11-12 12:04:54.252241\",\"BADGE\":3,\"CONTENT-AVAILABLE\":1,\"SOUND\":\"dafault\"}","DEVICE_ID":"AC53D4F0-DAAA-475E-9668-5E9E7485797C","PUSH_ID":"c9544c8db2117f02f3edc8af9058b3d54c15500302bf6f47c487193876f6dc23","CREATE_DATE":"2015-11-12","CREATE_TIME":"04:04:54"}";

您甚至可以注意到其語法未正確突出顯示。

您需要轉義引號 ，以使Java將其識別為字符串的一部分，而不是代碼的一部分：

String json="{\"FROM_JID\":\"6bc24cac4eaf304ce1731bd5aebe9b0419052701\",\"TO_JID\":\"dfc8d53f402373a1d3622dde50e180b388b36bc1\",\"TYPE_ID\":\"1\",\"PLATFORM\":\"IOS\",\"CONTENT\":\"{\\\"FROM_JID\\\":\\\"6bc24cac4eaf304ce1731bd5aebe9b0419052701\\\",\\\"FROM_HOST\\\":\\\"ssdevim.mtouche-mobile.com\\\",\\\"FROM_JNAME\\\":\\\"test1\\\",\\\"TO_JID\\\":\\\"dfc8d53f402373a1d3622dde50e180b388b36bc1\\\",\\\"TO_HOST\\\":\\\"ssdevim.mtouche-mobile.com\\\",\\\"MESSAGE_ID\\\":\\\"LiYaU-39\\\",\\\"MESSAGE_TYPE\\\":\\\"enc\\\",\\\"MESSAGE\\\":\\\"test1 has sent you an encrypted message.\\\",\\\"STAMP\\\":\\\"2015-11-12 12:04:54.252241\\\",\\\"BADGE\\\":3,\\\"CONTENT-AVAILABLE\\\":1,\\\"SOUND\\\":\\\"dafault\\\"}\",\"DEVICE_ID\":\"AC53D4F0-DAAA-475E-9668-5E9E7485797C\",\"PUSH_ID\":\"c9544c8db2117f02f3edc8af9058b3d54c15500302bf6f47c487193876f6dc23\",\"CREATE_DATE\":\"2015-11-12\",\"CREATE_TIME\":\"04:04:54\"}";

其次，如果您已經有一個String並將其轉換為byte[] ，為什么還要反序列化它呢？ 只需將其轉換為byte數組：

byte[] bytes = json.getBytes();