类型不匹配：无法从 org.codehaus.jettison.json.JSONObject 转换为 org.json.JSONObject

Question

如何将 org.codehaus.jettison.json.JSONObject 转换为 org.json.JSONObject

 import org.codehaus.jettison.json.JSONObject;
    ....
    ....
    JSONObject rawSchema = ExportUtil.getFileAndConvertToJson(environment.getProperty("export.path")+ "schema.json");  
    org.json.JSONObject rawSchema1 = rawSchema; // Exception: Type mismatch: cannot convert from org.codehaus.jettison.json.JSONObject to org.json.JSONObject

public static JSONObject getFileAndConvertToJson(String filePath) {
    File fileToDownload = new File(filePath);
    JSONObject jsonObject = null;
    try (InputStream inputStream = new FileInputStream(fileToDownload)) {
        BufferedReader streamReader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"));
        StringBuilder responseStrBuilder = new StringBuilder();

        String inputStr;
        while ((inputStr = streamReader.readLine()) != null)
        responseStrBuilder.append(inputStr);

        jsonObject = new JSONObject(responseStrBuilder.toString());
        
    } catch (Exception e) {
         
        e.printStackTrace();
    }
    return jsonObject;
}

Answer 1

异常说明了一切，ExportUtil.getFileAndConvertToJson 正在返回一个 org.codehaus.jettison.json.JSONObject，您正试图将其分配给一个 org.json.JSONObject 变量

Answer 2

您应该使用相同的 class JSONObject，而不是 org.json.JSONObject。

类型不匹配：无法从 org.codehaus.jettison.json.JSONObject 转换为 org.json.JSONObject

Type mismatch: cannot convert from org.codehaus.jettison.json.JSONObject to org.json.JSONObject

java

jackson