importjava.util.*;importorg.json.simple.*;publicclassConvertListToJSONArrayTest {publicstaticvoidmain(String[] args) { List<String> list =newArrayList<String>(); list.add("India"); list.add("Australia"); list.add("England"); list.add("South Africa"); list.add("West Indies"); list.ad...
我们可以使用Gson库来实现Java List Bean到JSONArray的转换。Gson是一个Google提供的用于处理JSON数据的Java库,非常方便和灵活。下面是一个示例代码: importcom.google.gson.Gson;importcom.google.gson.JsonArray;importjava.util.List;publicclassListBeanConverter{publicJsonArrayconvertListBeanToJsonArray(List<Bean>l...
下面是将List转换为JSON数组的状态图表示: ConvertListToJsonArray 结论 Java8引入的流式编程风格为我们提供了一种方便的方式来将List转换为JSON数组。使用Jackson库,我们可以轻松地将Java对象转换为JSON以及将JSON转换为Java对象。通过掌握这些技巧,我们可以更高效地处理JSON数据,并在应用程序之间进行数据交换。 希望本文...
在上面的示例中,我们直接输出了转换后的JsonArray。如果你需要将其返回给调用者,只需将JsonArray作为方法的返回值即可。 java import com.google.gson.Gson; import com.google.gson.JsonArray; public class Main { public static JsonArray convertListToJsonArray(List<Object> list) { Gson gson = new...
如果使用JSONObject进行转换会出现:Exception in thread "main" net.sf.json.JSONException: 'object' is an array. Use JSONArray instead 下面将json串转换为list 1 2 3 4 5 6 7 8 9 10 11 12 13 publicstaticvoidjsonToList(){ String arrayStr="[{\"name\":\"JSON\",\"age\":\"24\",\"add...
keySet().size()); for(Product p : cartMap.keySet()) { cartList.add(p); } Gson gson = new Gson(); // convert your list to json String jsonCartList = gson.toJson(cartList); // print your generated json System.out.println("jsonCartList: " + jsonCartList); return jsonCartList;...
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String[] my_array = new String[list.size()]; // Convert the ArrayList to an array and store it in my_array. list.toArray(my_array); // Iterate through the elements of the string array and print each element. for (String string : my_array) { System.out.println(string); } } }...
Map<Integer, Animal> map = convertListService.convertListAfterJava8(list); assertThat( map.values(), containsInAnyOrder(list.toArray())); }Copy 5. Using the Guava Library Besides core Java, we can use third-party libraries for the conversion. ...
下面是将List转换为JsonArr的完整代码示例: importorg.json.simple.JSONArray;importorg.json.simple.JSONObject;importjava.util.List;publicclassListToJsonArrConverter{publicstaticJSONArrayconvert(List<Object>list){JSONArrayjsonArray=newJSONArray();for(Objectobj:list){JSONObjectjsonObject=newJSONObject();//...