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 1 package test.reflect2;
 2 
 3 import java.util.HashMap;
 4 import java.util.Map;
 5 
 6 public enum NodeEnum {
 7 
 8     userName("name", String.class),
 9     password("password", String.class),
10     userId("id", Long.class),
11     height("height", Double.class),
12     ;
13 
14     NodeEnum(String name, Class<?> type) {
15         this.name = name;
16         this.type = type;
17     }
18 
19     public static Map<String, Class<?>> getNodeMap() {
20         Map<String, Class<?>> map = new HashMap<String, Class<?>>();
21         NodeEnum[] nodeEnums = NodeEnum.values();
22         for (NodeEnum ne : nodeEnums) {
23             map.put(ne.getName(), ne.getType());
24         }
25         return map;
26     }
27 
28     private String name;
29     
30     private Class<?> type;
31 
32     public String getName() {
33         return name;
34     }
35 
36     public void setName(String name) {
37         this.name = name;
38     }
39 
40     public Class<?> getType() {
41         return type;
42     }
43 
44     public void setType(Class<?> type) {
45         this.type = type;
46     }
47 
48 
49 }

  1 public class UserXMLDO {
  2 
  3     private static Map<String, Class<?>> nodeEnumMap = null;
  4     static {
  5         nodeEnumMap = NodeEnum.getNodeMap();
  6     }
  7 
  8     private Long id;
  9     private String name;
 10     private String password;
 11     private Double height;
 12     private Double weight;
 13 
 14     public static String toStringXML(UserXMLDO userXMLDO) throws Exception {
 15         StringBuffer sb = new StringBuffer();
 16         sb.append("<UserInfo>");
 17         Iterator<Entry<String, Class<?>>> it = nodeEnumMap.entrySet().iterator();
 18         while (it.hasNext()) {
 19             Entry<String, Class<?>> entry = it.next();
 20             Object object = userXMLDO.getClass().getDeclaredField(entry.getKey()).get(userXMLDO);
 21             sb.append(genNodeXmlString(entry.getKey(), object == null ? "" : object));
 22         }
 23         sb.append("</UserInfo>");
 24         return sb.toString();
 25     }
 26 
 27     public static UserXMLDO toUserXMLDO(String xml) throws Exception {
 28         UserXMLDO userXMLDO = new UserXMLDO();
 29         Element rootElement = DocumentXmlHelper.read(xml).getRootElement();
 30 
 31         Iterator<?> it = rootElement.elementIterator();
 32         while (it.hasNext()) {
 33             Element e = (Element) it.next();
 34             setAttrValue(userXMLDO, e.getName(), e.getTextTrim());
 35         }
 36         return userXMLDO;
 37     }
 38 
 39     private static void setAttrValue(UserXMLDO userXMLDO, String nodeName, String value) throws Exception {
 40 
 41         Field f = userXMLDO.getClass().getDeclaredField(nodeName);
 42         if (nodeEnumMap.get(nodeName).getName().equals(String.class.getName())) {
 43             f.set(userXMLDO, value);
 44         } else if (nodeEnumMap.get(nodeName).getName().equals(Long.class.getName())
 45                 || nodeEnumMap.get(nodeName).getName().equals(Double.class.getName())) {
 46             f.set(userXMLDO,
 47                     nodeEnumMap.get(nodeName).getDeclaredMethod("valueOf", String.class).invoke(userXMLDO, value));
 48         } else {
 49             throw new Exception("仅支持Long, String 类型");
 50         }
 51     }
 52 
 53 
 54     private static String genNodeXmlString(String nodeName, Object value) {
 55         StringBuffer sb = new StringBuffer();
 56         sb.append("<");
 57         sb.append(nodeName);
 58         sb.append(">");
 59         sb.append(value);
 60         sb.append("</");
 61         sb.append(nodeName);
 62         sb.append(">");
 63         return sb.toString();
 64     }
 65 
 66     public Long getId() {
 67         return id;
 68     }
 69 
 70     public void setId(Long id) {
 71         this.id = id;
 72     }
 73 
 74     public String getName() {
 75         return name;
 76     }
 77 
 78     public void setName(String name) {
 79         this.name = name;
 80     }
 81 
 82     public String getPassword() {
 83         return password;
 84     }
 85 
 86     public void setPassword(String password) {
 87         this.password = password;
 88     }
 89 
 90     public Double getHeight() {
 91         return height;
 92     }
 93 
 94     public void setHeight(Double height) {
 95         this.height = height;
 96     }
 97 
 98     public Double getWeight() {
 99         return weight;
100     }
101 
102     public void setWeight(Double weight) {
103         this.weight = weight;
104     }
105 }

 1 public static void main(String[] args) throws Exception {
 2         UserXMLDO userXMLDO = new UserXMLDO();
 3         userXMLDO.setId(1L);
 4         userXMLDO.setName("威少");
 5         userXMLDO.setPassword("三双无解");
 6         userXMLDO.setHeight(1.90d);
 7         userXMLDO.setWeight(85.5d);
 8 
 9         String xml = UserXMLDO.toStringXML(userXMLDO);
10         System.out.println(xml);
11 
12         UserXMLDO userXMLDO2 = UserXMLDO.toUserXMLDO(xml);
13         System.out.println(userXMLDO2);
14     }