我正在使用this answer作为基础,但我无法让它发挥作用。我的主要问题是 .add() 方法在 JSONArray 类中不可用。
estinationList 只是一个 ArrayList。
JSONObject json = new JSONObject();
JSONArray addresses = new JSONArray();
JSONObject address;
public void doPost(HttpServletRequest req, HttpServletResponse resp) throws IOException {
for (Establishment est : establishmentList) {
address = new JSONObject();
try {
address.put("name", est.getBusinessName());
address.put("address", est.getAddress());
address.put("rating", est.getRating());
addresses.add(address); //<-- method not available, compiler error
} catch (JSONException e) {
e.printStackTrace();
}
}
json.put("Addresses", addresses);
resp.setContentType("application/json");
PrintWriter out = resp.getWriter();
out.println(json.toString());
}
我导入的 JSON 是:
import com.google.appengine.labs.repackaged.org.json.JSONArray;
import com.google.appengine.labs.repackaged.org.json.JSONException;
import com.google.appengine.labs.repackaged.org.json.JSONObject;
最佳答案
应该是:
addresses.put(address);
关于java - 创建 JSON 数据,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/20431547/