com.fasterxml.jackson完成json转map

在开发时有时候需要将接收到的json字符串转成map

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

try{
     String jsonStr = "{\"errcode\":40163,\"errmsg\":\"code been used, hints: [ req_id: .bYjNa04342034 ]\"}";   
     ObjectMapper objectMapper = new ObjectMapper();
     HashMap<String,Object> map = objectMapper.readValue(jsonStr,HashMap.class);
}catch(Exception e){
    e.printStackTrace();
}