jackJson的基本用法2___map-json 与 json-map

<!-- jackson framework -->
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.8.5</version>
</dependency>

@Test
public void Test3() {
// json to map
String json = "{\"name\":\"Hery\",\"age\":23,\"shool\":\"Hafo\"}";
Map<String,String> map;
ObjectMapper mapper = new ObjectMapper();
try {
map = mapper.readValue(json,new TypeReference<HashMap<String, String>>() {});
//或者从文件中读取
//map = mapper.readValue(new File("C:\\Users\\Administrator\\Desktop\\java\\User.json"),new TypeReference<HashMap<String, String>>() {});
System.out.println(map);
//map to json
map = new HashMap<String, String>();
map.put("name", "Hery");
map.put("age", "23");
map.put("shool", "Hafo");
String json1 = mapper.writeValueAsString(map);
//或者写到文件
//mapper.writeValue(new File("C:\\Users\\Administrator\\Desktop\\java\\User.json"), map);
System.out.println(json1);
} catch (JsonParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (JsonMappingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}