如何在 Java 对象中转换字符串数组 JSON
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How to Convert String Array JSON in a Java Object
提问by Deividson Calixto
i need to convert this String JSON to a Java Object:
我需要将此字符串 JSON 转换为 Java 对象：
{"estabelecimento":[{"id":"5","idUsuario":"5","razaoSocial":"Bibi LTDA","nomeFantasia":"BibiPizza","telefone":"22121212","email":"[email protected]","gostaram":"0"},{"id":"8","idUsuario":"1","razaoSocial":"Nestor Latuf LTDA","nomeFantasia":"Nestor Sorvetes","telefone":"32343233","email":"[email protected]","foto":"","gostaram":"0"},{"id":"9","idUsuario":"1","razaoSocial":"Comercio Alimenticio Rivaldo","nomeFantasia":"Rogers Burguer","telefone":"210021020","email":"[email protected]","foto":"","gostaram":"0"}]}
I try this, but not work:
我试试这个，但不起作用：
//JSONArray jArr = new JSONArray(br.toString());
//JSONObject jObj = new JSONObject(br.toString());
//JSONArray jArr = jObj.getJSONArray("list");
JSONArray jArr = new JSONArray(br.toString());
for (int i=0; i < jArr.length(); i++) {
JSONObject obj = jArr.getJSONObject(i);
estabelecimento.setId(obj.getLong("id"));
estabelecimento.setIdUsuario(obj.getLong("idUsuario"));
estabelecimento.setRazaoSocial(obj.getString("razaoSocial"));
estabelecimento.setNomeFantasia(obj.getString("nomeFantasia"));
estabelecimento.setTelefone(obj.getString("telefone"));
estabelecimento.setEmail(obj.getString("email"));
estabelecimento.setGostaram(obj.getInt("gostaram"));
estabelecimentoList.add(estabelecimento);
}
con.disconnect();
How can i obtain a Java Object? Someone can help? tks.
我如何获得 Java 对象？有人可以帮忙吗？tks。
采纳答案by Marco Di Scala
You can use the Gson lib of google:
您可以使用谷歌的 Gson 库：
public class MyClass {
private int data1 = 100;
private String data2 = "hello";
private List<String> list = new ArrayList<String>() {
{
add("String 1");
add("String 2");
add("String 3");
}
};
//getter and setter methods needed
}
String str = {"data1":100,"data2":"hello","list":["String 1","String 2","String 3"]};
com.google.gson.Gson gson = new com.google.gson.Gson();
//To convert json string to class use fromJson
MyClass obj = gson.fromJson(str, MyClass .class);
//To convert class object to json string use toJson
String json = gson.toJson(obj);
回答by Oleg Gryb
At high level two major steps:
在高层有两个主要步骤：
- Generate a Java class from your JSON, e.g. by using this generator or similar: http://www.jsonschema2pojo.org/
Use Hymanson processor to deserialize your JSON file:
ObjectMapper mapper = new ObjectMapper(); YourGeneratedClass obj = (YourGeneratedClass) mapper.readValue(new File("path-to-your-json-file"), YourGeneratedClass.class);
- 从你的 JSON 生成一个 Java 类，例如使用这个生成器或类似的：http: //www.jsonschema2pojo.org/
使用 Hymanson 处理器反序列化您的 JSON 文件：
ObjectMapper mapper = new ObjectMapper(); YourGeneratedClass obj = (YourGeneratedClass) mapper.readValue(new File("path-to-your-json-file"), YourGeneratedClass.class);
More about Hymanson: http://Hymanson.codehaus.org/
关于Hyman逊的更多信息：http: //Hymanson.codehaus.org/
You can also create YourGeneratedClass manually if you feel comfortable enough with this.
如果您对此感到满意，也可以手动创建 YourGeneratedClass。
