android - 使用 XML 转换器改造返回 null

Question

我第一次将 Retrofit 与 XML Converter 一起使用，我的目标是获取项目标签内的描述字段。问题是，每次我执行它时，它都会返回 description null。

我的 XML 是:

<rss version="2.0">
<channel>
 <title>Tests</title>
 <description>First Description</description>
 <link>http://teste.html</link>
 <item>
  <title>Test number 5 - 1/11/2017</title>
  <description>
      Description that I want to get
  </description>
  <link> http://test.html </link>
 </item>
</channel>
</rss>

类(class) channel :

@Root(name="rss", strict=false)
public class Channel {

    @Element(name = "title", required = false)
    private String title;

    @Element(name = "description", required = false)
    private String description;

    @Element(name = "link", required = false)
    private String link;

    private Item item;

    public String getTitle() {return title;}

    public void setTitle(String title) {this.title = title;}

    public String getDescription() {return description;}

    public void setDescription(String description) {this.description = description;}

    public String getitem(){
        Item item = new Item();
        return item.getDescription();
    }

    public void setLink(String title) {this.link = link;}

    public String getLink(String title) { return link;}   
}

类(class)项目:

@Root(name="item", strict=false)
public class Item {

    @Element(name = "title")
    private String title;

    @Element(name = "description")
    private String description;

    public String getTitle() {return this.title;}

    public void setTitle(String title) {this.title = title;}

    public String getDescription() {return this.description;}

    public void setDescription(String description) {
        this.description = description;
    }
}

我尝试打印描述但结果为空的方法。

@Override
    public void onResponse(Call<Channel> call, Response<Channel> response) {
        if (response.isSuccessful()) {
            Channel rss = response.body();
            Log.d("Controller","Description----->: " + rss.getitem());
        } else {
            Log.d("Controller","Error----->:"+response.errorBody());
        }
    }

我做错了什么吗？

Answer 1

在花了一些时间解决这个问题后，我找到了解决方案。

问题是我应该在每个 Element 的 declaration 中添加 class Channel 标签 @Path(" channel ”)。

例如:

@Element(name = "link", required = false)
@Path("channel")
private String link;