Question

我试图用 XStream 将 XML 文件解析为对象, 但我得到了这个例外 :

Exception in thread "main" com.thoughtworks.xstream.mapper.CannotResolveClassException: servers at com.thoughtworks.xstream.mapper.DefaultMapper.realClass(DefaultMapper.java:56) at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30) at com.thoughtworks.xstream.mapper.DynamicProxyMapper.realClass(DynamicProxyMapper.java:55) [...]

<强> 这是我的XML:

  <servers>
    <server>
      <ip>10.196.113.27</ip> 
    </server>
    <server>
      <ip>10.196.113.31</ip> 
    </server>
  </servers>

这里是我的代码:

public class ServerIP {
    private String ip;

    public String getIp() {
        return ip;
    }

    public void setIp(String ip) {
        this.ip = ip;
    }
}

public class ServerHandler {

    private String fileName = "servers.xml";
    private String path = "J:\workspace\LOG730\src\Q3\";
    private XStream xstream = new XStream(new DomDriver());

    public void readFromXML() {
        try {
            FileInputStream fis = new FileInputStream(path + fileName);
            ServerIP server = (ServerIP) xstream.fromXML(fis, new ServerIP());
            System.out.println("Host: " + server.getIp());
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
    }

<% 1> 触发例外:

    ServerHandler serverHandler = new ServerHandler();
    serverHandler.readFromXML();

Answer 1

尝试添加一个类服务器以保持您的服务器IP 实例, 并添加此行 :

xstream.alias("servers", Servers.class);
xstream.alias("server", ServerIP.class);

您可以在此找到一个简单的别名教程 : http://x-stre.github.io/alias-tumental.html

Answer 2

@XStreamAlias("server")
public class ServerIP {
    private String ip;

    public String getIp() {
        return ip;
    }

    public void setIp(String ip) {
        this.ip = ip;
    }
}

@Teg指出这个方向。

友情链接