首先请原谅我,因为我认为这是一个愚蠢的问题。我刚开始学习java
我有一个json文件,我将其解析为POJO,以便我可以对它们进行操作
这是解析器实现
public class ParsingTweet {
public static void main(String[] args) throws IOException {
assert args != null & args.length > 0;
List<Tweet> tweets = new ArrayList<>();
ObjectMapper mapper = new ObjectMapper();
try (BufferedReader reader = new BufferedReader(new FileReader(args[0]))) {
String line;
while ((line = reader.readLine()) != null) {
tweets.add(mapper.readValue(line, Tweet.class));
}
}
System.out.println(tweets);
}
}
但我的导师说这个结果不是真正的POJO。它只是一个字符串表示。例如
[[text = I think this would be good. Would hopefully light the fire in the later rounds if you knew you were losing..., created_at = Mon Mar 06 22:48:07 +0000 2017, user = User@56f4468b, coordinates = null], [text = @Night_0f_Fire He's stuck in the alimony machine,, bust him out, created_at = Mon Mar 06 22:47:53 +0000 2017, user = User@6cc4c815, coordinates = null], ..., ..., ...]]]
那么实际的POJO是什么样的?
PS。这是json的例子
{&#34; text&#34;:&#34; Flood / Storm / Tree Down。北部海滩(King Rd,Ingleside,NSW 2101)于2017年3月6日21:38,&#34;用户&#34;:{&#34; id&#34;:&#34; 4721717942&#34;,&#34 ;姓名&#34;:&#34;新南威尔士州消防更新&#34;},&#34; lang&#34;:&#34; en&#34;,&#34;坐标&#34;:{&#34;坐标&#34;:[151.264811,-33.6848],&#34;输入&#34;:&#34;点&#34;},&#34; created_at&#34;:&#34; Mon Mar 06 10:44 :31 +0000 2017&#34;},...,...
答案 0 :(得分:0)
以Gson为例。
String fullFile = ...read file...;
Gson gson = new Gson();
List<Tweet> tweets = gson.fromJson(fullFile, new TypeToken<ArrayList<Tweet>>(){});
System.out.println(tweets);