[Java] JsonString To Map & JsonString To List Map

1. maven dependency 설정

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-core</artifactId>
    <version>2.3.0</version>
</dependency>

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.3.0</version>
</dependency>

 

2. JsonString To Map

import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;

public static void main(String[] args) {
	String dataStr = (String) jsonObj.get("data");
	HashMap<String, Object> dataMap = new ObjectMapper()
    	.readValue(dataStr, new TypeReference<Map<String, Object>>(){});
}

 

3. JsonString To List Map

import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;

public static void main(String[] args) {
	String dataStr = (String) jsonObj.get("data");
	ArrayList<HashMap<String, String>> dataListMap = new ObjectMapper()
    .readValue(dataStr, new TypeReference<List<Map<String, String>>>(){});
}

 

 

🙏 참조 ::

• https://unlimitedcoding.tistory.com/14