Java convert object xml example 2016-07-20 06:59
There are many ways to convert object to xml. In this post I will show you how to use XStream to convert object to xml. In order to use XStream add maven dependency like following.
pom
<dependency>
<groupId>com.thoughtworks.xstream</groupId>
<artifactId>xstream</artifactId>
<version>1.4.7</version>
</dependency>
project structure
├─main
│ ├─java
│ │ └─com
│ │ └─henryxi
│ │ └─xstream
│ │ Address.java
│ │ ConvertObjectToXml.java
│ │ ConvertXmlToObject.java
│ │ User.java
│ │
│ └─resources
└─test
└─java
Java Model
@XStreamAlias("user")
public class User {
private String name;
private int age;
private List<Address> addresses;
public List<Address> getAddresses() {
return addresses;
}
public void setAddresses(List<Address> addresses) {
this.addresses = addresses;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
@Override
public String toString() {
return "User{" +
"name='" + name + '\'' +
", age=" + age +
", addresses=" + addresses +
'}';
}
}
@XStreamAlias("address")
public class Address {
private String country;
private String city;
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
@Override
public String toString() {
return "Address{" +
"country='" + country + '\'' +
", city='" + city + '\'' +
'}';
}
}
convert object to xml
public class ConvertObjectToXml {
public static void main(String[] args) {
User henry = initDate();
XStream xStream = new XStream();
xStream.autodetectAnnotations(true);
String xml = xStream.toXML(henry);
System.out.println(xml);
}
private static User initDate() {
User henry = new User();
henry.setName("henry");
henry.setAge(27);
Address home = new Address();
home.setCountry("China");
home.setCity("Hebei");
Address company = new Address();
company.setCountry("China");
company.setCity("Beijing");
List<Address> addressList = new ArrayList<>();
addressList.add(home);
addressList.add(company);
henry.setAddresses(addressList);
return henry;
}
}
The output like following
<user>
<name>henry</name>
<age>27</age>
<addresses>
<address>
<country>China</country>
<city>Hebei</city>
</address>
<address>
<country>China</country>
<city>Beijing</city>
</address>
</addresses>
</user>
If you do not use @XStreamAlias("user") the node name will contain package name and class name. Execute autodetectAnnotations before execute toXml method.
convert xml to object
public class ConvertXmlToObject {
public static void main(String[] args) {
String xml = "<user>\n" +
" <name>henry</name>\n" +
" <age>27</age>\n" +
" <addresses>\n" +
" <address>\n" +
" <country>China</country>\n" +
" <city>Hebei</city>\n" +
" </address>\n" +
" <address>\n" +
" <country>China</country>\n" +
" <city>Beijing</city>\n" +
" </address>\n" +
" </addresses>\n" +
"</user>";
XStream xStream = new XStream();
xStream.processAnnotations(User.class);
User henry = (User)xStream.fromXML(xml);
System.out.println(henry.toString());
}
}
For converting xml to object, execute processAnnotations method if you want specify the node name.