SimpleXML 反序列化 Map<String, String>

Question

我有 XML:

<?xml version="1.0" encoding="UTF-8"?>
<addresses xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:noNamespaceSchemaLocation='schema_task1_1.xsd'>

  <address>
    <name>Bill</name>
    <city>NewYork</city>
    <street>First</street>
    <phone type='mobile'>+19139130000</phone>
    <documents>
      <document type='driving_permit'>9045798749</document>
      <document type='passport'>3451231231</document>
    </documents>
  </address>

  <address>
    ...
  </address>

</addresses>

和 Java 类:

@Root(name = "addresses")
public class Addresses {

    @ElementList(inline = true, entry = "address", required = false, type = Address.class)
    private List<Address> addresses = new ArrayList<Address>();

public class Address {

    @Element(required = false)
    private String name;
    @Element(required = false)
    private String city;
    @Element(required = false)
    private String street;
    @ElementMap(entry = "phone", key = "type", attribute = true, inline = true)
    private Map<String, String> phones;
    @ElementMap(entry = "documents", key = "type", attribute = true, inline = true)
    private Map<String, String> documents = new HashMap<String, String>();

所有字段反序列化成功，documents 除外。尝试反序列化时总是 null 。我想我在 @ElementMap 注释中有错误，但我不知道到底是什么。我做错了什么？

PS。我无法更改对象结构，因为它已被其他解析器使用。

Answer 1

您必须创建一个中间体 class 来处理 "documents"。此 class 将包含 "document":

的地图

class Address {
...
    @Element(required = false)
    private Documents documents;
}
class Documents {
    @ElementMap(entry = "document", key = "type", attribute = true, inline = true)
    private Map<String, String> documents = new HashMap<String, String>();
}

Answer 2

我解决了我的问题，但不太好。如果您知道更好的解决方案，请告诉我。我刚刚修复了 document Map 的注释并添加了 uselessVariable 注释。它有效并且不会破坏旧代码。

更新。我找到了更好的解决方案。添加了 @Path 注释。

@Root(name = "addresses")
public class Addresses {

    @ElementList(inline = true, entry = "address", required = false, type = Address.class)
    private List<Address> addresses = new ArrayList<Address>();

public class Address {

    @Element(required = false)
    private String name;
    @Element(required = false)
    private String city;
    @Element(required = false)
    private String street;
    @ElementMap(entry = "phone", key = "type", attribute = true, inline = true)
    private Map<String, String> phones;
    @Path("./documents")
    @ElementMap(entry = "document", key = "type", attribute = true, inline = true) //changed this line
    private Map<String, String> documents = new HashMap<String, String>();

SimpleXML 反序列化 Map<String, String>

SimpleXML deserialize Map<String, String>

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dictionary

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