类型为 HashMap<String，ArrayList> 中的方法 put(String， <Object>ArrayList 不适用于<Object>参数 (S

Question

我试图把ArrayList<Burger>为ArrayList<Object>，但我得到这个错误。

我想要ArrayList<Object>作为对象，我该如何去做这件事?

这是它给我的错误thisModelInfo.put(…);

The method put(String, ArrayList<Object>) in the type HashMap<String,ArrayList<Object>> is not applicable for the arguments (String, ArrayList<Burger>)

这是我的代码。

package com.ashgharibyan.apiofapis.controllers;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.ashgharibyan.apiofapis.models.Burger;
import com.ashgharibyan.apiofapis.models.User;
import com.ashgharibyan.apiofapis.services.BurgerService;
import com.ashgharibyan.apiofapis.services.UserService;
@RestController
public class UserAPIController {
@Autowired
private UserService userServ;

@Autowired
private BurgerService burgerServ;
@RequestMapping("/api/all")
public ArrayList<HashMap<String, ArrayList<HashMap<String, ArrayList<Object>>>>> index() {


List<User> allUsers = (List<User>) userServ.allUsers();




ArrayList<HashMap<String, ArrayList<HashMap<String, ArrayList<Object>>>>> mainAPI =  new ArrayList<>();




for(int i=0; i<allUsers.size();i++) {
// One User Level
HashMap<String, ArrayList<HashMap<String, ArrayList<Object>>>> thisUserInfo = new HashMap<String, ArrayList<HashMap<String, ArrayList<Object>>>>();
//All Model Level
ArrayList<HashMap<String, ArrayList<Object>>> allModelInfo = new ArrayList<>();

//Current Model Level
HashMap<String, ArrayList<Object>> thisModelInfo = new HashMap<String, ArrayList<Object>>();

ArrayList<Burger> allBurgers = (ArrayList<Burger>) burgerServ.allBurgers();

thisModelInfo.put("burger", allBurgers);

allModelInfo.add(thisModelInfo);

thisUserInfo.put(allUsers.get(i).getUserName(), allModelInfo);

mainAPI.add(thisUserInfo);
}


return mainAPI;
}
}

我不知道该怎么做才能使它工作。我需要它是动态的，因为我将改变我正在导入的模型名称。

Answer 1

也可以将ArrayList<Burger>修改为ArrayList<Object>或把

HashMap<String, ArrayList<HashMap<String, ArrayList<Object>>>> thisUserInfo = new HashMap<String, ArrayList<HashMap<String, ArrayList<Object>>>>();

HashMap<String, ArrayList<HashMap<String, ArrayList<Burger >>>> thisUserInfo = new HashMap<String, ArrayList<HashMap<String, ArrayList< Burger>>>>();