這是我的一個例子：JSON{ "status": "ok", "rowCount": 60, "pageCount": 6, "value": [{ "CustomerID": 1911, "CustomerTypeID": 3, ... } ]}我的手機：@SerializedName("CustomerID")public Integer CustomerID;@SerializedName("CustomerTypeID")public Integer CustomerTypeID;我想把所有東西都拉到下面。value如何使用谷歌的GSON來做到這一點？我已經嘗試像往常一樣這樣做，但由于顯而易見的原因，它不起作用：Type collectionType = new TypeToken<ArrayList<Customer>>() {}.getType();return gson.fromJson(json, collectionType);
3 回答
回首憶惘然
TA貢獻1847條經驗 獲得超11個贊
您不能跳過根目錄 。在這種情況下，最簡單的解決方案是 - 創建根：JSON objectPOJO
class Response {
@SerializedName("value")
private List<Customer> customers;
// getters, setters
}
您可以按如下方式使用它：
return gson.fromJson(json, Response.class).getCustomers();
慕田峪7331174
TA貢獻1828條經驗 獲得超13個贊
您不必擔心編寫自己的POJO。
只需訪問 http://www.jsonschema2pojo.org/ 并將您的JSON數據粘貼到此處，它將自動返回您轉換后的類，如下所示
-----------------------------------示例.java-----------------------------------
package com.example;
import java.util.List;
import com.google.gson.annotations.Expose;
import com.google.gson.annotations.SerializedName;
public class Example {
@SerializedName("status")
@Expose
private String status;
@SerializedName("rowCount")
@Expose
private Integer rowCount;
@SerializedName("pageCount")
@Expose
private Integer pageCount;
@SerializedName("value")
@Expose
private List<Value> value = null;
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public Integer getRowCount() {
return rowCount;
}
public void setRowCount(Integer rowCount) {
this.rowCount = rowCount;
}
public Integer getPageCount() {
return pageCount;
}
public void setPageCount(Integer pageCount) {
this.pageCount = pageCount;
}
public List<Value> getValue() {
return value;
}
public void setValue(List<Value> value) {
this.value = value;
}
}
-----------------------------------.java-----------------------------------
package com.example;
import com.google.gson.annotations.Expose;
import com.google.gson.annotations.SerializedName;
public class Value {
@SerializedName("CustomerID")
@Expose
private Integer customerID;
@SerializedName("CustomerTypeID")
@Expose
private Integer customerTypeID;
public Integer getCustomerID() {
return customerID;
}
public void setCustomerID(Integer customerID) {
this.customerID = customerID;
}
public Integer getCustomerTypeID() {
return customerTypeID;
}
public void setCustomerTypeID(Integer customerTypeID) {
this.customerTypeID = customerTypeID;
}
}
以上兩類都是網站自動生成的。
忽然笑
TA貢獻1806條經驗 獲得超5個贊
import java.util.List;
import com.google.gson.annotations.Expose;
import com.google.gson.annotations.SerializedName;
public class ExampleClass {
@SerializedName("status")
@Expose
private String status;
@SerializedName("rowCount")
@Expose
private int rowCount;
@SerializedName("pageCount")
@Expose
private int pageCount;
@SerializedName("value")
@Expose
private List<Value> value = null;
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public int getRowCount() {
return rowCount;
}
public void setRowCount(int rowCount) {
this.rowCount = rowCount;
}
public int getPageCount() {
return pageCount;
}
public void setPageCount(int pageCount) {
this.pageCount = pageCount;
}
public List<Value> getValue() {
return value;
}
public void setValue(List<Value> value) {
this.value = value;
}
}
-----------------------------------價值.java-----------------------------------
import com.google.gson.annotations.Expose;
import com.google.gson.annotations.SerializedName;
public class Value {
@SerializedName("CustomerID")
@Expose
private int customerID;
@SerializedName("CustomerTypeID")
@Expose
private int customerTypeID;
public int getCustomerID() {
return customerID;
}
public void setCustomerID(int customerID) {
this.customerID = customerID;
}
public int getCustomerTypeID() {
return customerTypeID;
}
public void setCustomerTypeID(int customerTypeID) {
this.customerTypeID = customerTypeID;
}
}
/****** 解析與格森 ******/
GsonBuilder gsonBuilder = new GsonBuilder();
gson = gsonBuilder.create();
ExampleClass resultObj = gson.fromJson(jsonObject.toString(), ExampleClass.class);
List<Value> yourListOfCustomerValues = resultObj.getValue();
您可以參考這篇關于諾曼·佩特克的Gson的數組映射和對象列表的驚人帖子
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