先点插入代码，然后粘贴为纯文本，

public class Book {
    public long id;
    public String name;
    public String author;
    @JacksonXmlProperty(localName = "isbn")
    public BookAttr isbn;
    public List<String> tags;
    public String pubDate;
}

class BookAttr {
    @JacksonXmlProperty(isAttribute = true, localName = "lang")
    public String lang;
    @JacksonXmlProperty(isAttribute = true, localName = "aa")
    public String aa;
//测试一下
    @JacksonXmlText
    public String value;

}