Question

这是表单数据

selectedDtlId: [{"id":"3","isReviewed":true,"notes":"notes asdf test add 2"},{"id":"2","isReviewed":true,"notes":""},{"id":"1","isReviewed":true,"notes":""}]
isReviewedAll: true
notesAll:

在控制器中运行以下代码后

Gson gson = new Gson();
gson.toJson(request.getParameter("selectedDtlId"));

响应

"[{\"id\":\"3\",\"isReviewed\":true,\"notes\":\"notes asdf test add 2\"},{\"id\":\"2\",\"isReviewed\":true,\"notes\":\"\"},{\"id\":\"1\",\"isReviewed\":true,\"notes\":\"\"}]"

预期响应

[
   {
      "id": "3",
      "isReviewed": true,
      "notes": "notes asdf test add 2"
   },
   {
      "id": "2",
      "isReviewed": true,
      "notes": ""
   },
   {
      "id": "1",
      "isReviewed": true,
      "notes": ""
   }
]

Answer 1

您应该从Json打电话给Json：

gson.fromJson(request.getParameter("selectedDtlId"), JsonElement.class);

或者，如果您有模型：

gson.fromJson(request.getParameter("selectedDtlId"), MyModel.class);

Answer 2

您应将其映射到类。（另外，当您应该从Json打电话给您时，您也在向Json打电话）

主要

session = HTMLSession()
req = session.get(url)

# do something

req.close()
session.close()

模型

import com.google.gson.Gson;

public class Main {

  public static void main(String[] args) {
    String jsonInString = "[{\"id\":\"3\",\"isReviewed\":true,\"notes\":\"notes asdf test add 2\"},{\"id\":\"2\",\"isReviewed\":true,\"notes\":\"\"},{\"id\":\"1\",\"isReviewed\":true,\"notes\":\"\"}]";
    Gson gson = new Gson();

    SelectedDtlId[] selectedDtlIds = gson.fromJson(jsonInString, SelectedDtlId[].class);

    for (SelectedDtlId selectedDtlId : selectedDtlIds) {
      System.out.println("id: " + selectedDtlId.getId());
      System.out.println("notes: " + selectedDtlId.getNotes());
      System.out.println("isReviewed: " + selectedDtlId.isReviewed());
    }
  }

}

结果应该是：

import com.google.gson.annotations.SerializedName;

public class SelectedDtlId {

  @SerializedName("id")
  private int id;
  @SerializedName("isReviewed")
  private boolean isReviewed;
  @SerializedName("notes")
  private String notes;

  // getters & setters
}

将JSON从ajax请求转换为Java中的JSON对象

2 个答案: