java - 谷歌GSON : Deserialize JSON data to Java

Question

我们正在使用 Google GSON 将 JSON 数据反序列化为 Java 对象。请参阅下面的示例 JSON 数据和相应的 POJO 类。我能够反序列化“name”和“phoneNumber”字段。但对于 "deparments" 字段，我看到 Null。您能帮我如何反序列化 "deparments" 字段吗？

我的 JSON:

{
  "name": "customer",
  "phoneNumber": "000000000",
  "deparments": "xyz,abc,wyz,djkf, iii"
}

类(class):

public class CustomerInfo
{
    private String name;
    private String phoneNumber;
    private String deparments;

    // getters and setters
}

CustomerDeserializer.java:

...
Gson gson = new Gson();
CustomerInfo customerInfo = gson.fromJson(reader, CustomerInfo.class);

Answer 1

重新检查您的 JSON 源。我认为您只有一些带有 key: departments 的对象，而不是deparments。

无论如何，下一个代码对我有用:

public class CustomerInfo
{
    private String name;
    private String phoneNumber;
    private String deparments;

    // getters and setters
    public String getName(){
        return name;
    }
    public void setName(String name){
        this.name = name;
    }
    public String getPhoneNumber(){
        return phoneNumber;
    }
    public void setPhoneNumber(String phoneNumber){
        this.phoneNumber = phoneNumber;
    }
    public String getDeparments() {
        return deparments;
    }
    public void setDeparments(String deparments) {
        this.deparments = deparments;
    }

    @Override
    public String toString() {
        return "CustomerInfo{" +
                "name='" + name + '\'' +
                ", phoneNumber='" + phoneNumber + '\'' +
                ", deparments='" + deparments + '\'' +
                '}';
    }
}

@Test
public void desJson(){
    String json = "{\n" +
            "  \"name\": \"customer\",\n" +
            "  \"phoneNumber\": \"000000000\",\n" +
            "  \"deparments\": \"xyz,abc,wyz,djkf, iii\"\n" +
            "}";
    Gson gson = new Gson();
    CustomerInfo customerInfo = gson.fromJson(json, CustomerInfo.class);
    System.out.println(customerInfo);
}

输出是:

CustomerInfo{name='customer', phoneNumber='000000000', deparments='xyz,abc,wyz,djkf, iii'}