XML/JSON的操作類庫，
codehaus的xstream
，很簡單的在xml/json和java對象間轉換。
1、所需jar包：
xstream-[version].jar 和
xpp3-[version].jar 。xpp3不是必須的，也可以用標準的JAXP DOM parser 來代替，如：
XStream xstream = new XStream(new DomDriver()); // does not require XPP3 library
另外，通過
alias可實現xml屬性的支持。更多功能，請參閱
Tutorial 。
2、XML轉換代碼片段：
Class 轉換為 xml 的代碼片段:
XStream xstream = new XStream();
xstream.alias("person", Person.class);
xstream.alias("phonenumber", PhoneNumber.class);
Person joe = new Person("Joe", "Walnes");
joe.setPhone(new PhoneNumber(123, "1234-456"));
joe.setFax(new PhoneNumber(123, "9999-999"));
String xml = xstream.toXML(joe);
The resulting XML looks like this:
<person>
<firstname>Joe</firstname>
<lastname>Walnes</lastname>
<phone>
<code>123</code>
<number>1234-456</number>
</phone>
<fax>
<code>123</code>
<number>9999-999</number>
</fax>
</person>
xml轉換為java類的代碼片段:
Person newJoe = (Person)xstream.fromXML(xml);
3、JSON
另需jar包:jettison.jar 、stax-api.jar。JSON Turorial 。
Write to json:
package org.sensatic.json.test;
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.json.JettisonMappedXmlDriver;
public class WriteTest {
public static void main(String[] args) {
Product product = new Product("Banana", "123", 23.00);
XStream xstream = new XStream(new JettisonMappedXmlDriver());
xstream.alias("product", Product.class);
System.out.println(xstream.toXML(product));
}
}
Read from json:
package org.sensatic.json.test;
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.json.JettisonMappedXmlDriver;
public class ReadTest {
public static void main(String[] args) {
String json = "{\"product\":{\"name\":\"Banana\",\"id\":\"123\""
+ ",\"price\":\"23.0\"}}";
XStream xstream = new XStream(new JettisonMappedXmlDriver());
xstream.alias("product", Product.class);
Product product = (Product)xstream.fromXML(json);
System.out.println(product.getName());
}
}
And that's how simple XStream is!
posted on 2008-01-15 10:11
josson 閱讀(941)
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