示例
{
"store": {
"book": [
{
"category": "reference",
"author": "Nigel Rees",
"title": "Sayings of the Century",
"price": 8.95
},
{
"category": "fiction",
"author": "Evelyn Waugh",
"title": "Sword of Honour",
"price": 12.99
},
{
"category": "fiction",
"author": "Herman Melville",
"title": "Moby Dick",
"isbn": "0-553-21311-3",
"price": 8.99
},
{
"category": "fiction",
"author": "J. R. R. Tolkien",
"title": "The Lord of the Rings",
"isbn": "0-395-19395-8",
"price": 22.99
}
],
"bicycle": {
"color": "red",
"price": 19.95
}
},
"expensive": 10
}
转换之后：
"{\"store\":{\"bicycle\":{\"color\":\"red\",\"price\":19.95},\"book\":[{\"author\":\"Nigel Rees\",\"price\":8.95,\"category\":\"reference\",\"title\":\"Sayings of the Century\"},{\"author\":\"Evelyn Waugh\",\"price\":12.99,\"category\":\"fiction\",\"title\":\"Sword of Honour\"},{\"author\":\"Herman Melville\",\"price\":8.99,\"isbn\":\"0-553-21311-3\",\"category\":\"fiction\",\"title\":\"Moby Dick\"},{\"author\":\"J. R. R. Tolkien\",\"price\":22.99,\"isbn\":\"0-395-19395-8\",\"category\":\"fiction\",\"title\":\"The Lord of the Rings\"}]},\"expensive\":10}"
实现
import com.alibaba.fastjson.JSON;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.util.HashMap;
private String formatJson(JSON json) {
if (json == null) {
return "";
}
String result;
ObjectMapper objectMapper = new ObjectMapper();
Map<String, String> map = new HashMap<>(1);
map.put("JSON", json.toString());
try {
result = objectMapper.writeValueAsString(map.get("JSON"));
} catch (JsonProcessingException e) {
e.printStackTrace();
return "";
}
return result;
}