JSON

XStream通过使用适当的驱动程序初始化XStream对象来支持JSON。 XStream目前支持JettisonMappedXmlDriver和JsonHierarchicalStreamDriver。

现在让我们在XStream中使用json处理来测试代码。

在C:\> XStream_WORKSPACE\com\xnip\xstream中创建名为XStreamTester的java类文件。

File: XStreamTester.java

package cn.xnip.xstream;
import java.io.Writer;
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.annotations.XStreamAlias;
import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
import com.thoughtworks.xstream.io.json.JsonHierarchicalStreamDriver;
import com.thoughtworks.xstream.io.json.JsonWriter;
public class XStreamTester {
   public static void main(String args[]) {
      XStreamTester tester = new XStreamTester();
      XStream xstream = new XStream(new JsonHierarchicalStreamDriver() {
         public HierarchicalStreamWriter createWriter(Writer writer) {
            return new JsonWriter(writer, JsonWriter.DROP_ROOT_MODE);
         }
      });
      Student student = new Student("Mahesh","Parashar");
      xstream.setMode(XStream.NO_REFERENCES);
      xstream.alias("student", Student.class);
      System.out.println(xstream.toXML(student));
   }
}
@XStreamAlias("student")
class Student {
   private String firstName;
   private String lastName;
   public Student(String firstName, String lastName) {
      this.firstName = firstName;
      this.lastName = lastName;
   }
   public String getFirstName() {
      return firstName;
   }
   public String getLastName() {
      return lastName;
   }   
   public String toString() {
      return "Student [ firstName: "+firstName+", lastName: "+ lastName+ " ]";
   }	
}

验证结果

使用javac编译器编译类如下 -

C:\XStream_WORKSPACE\com\xnip\xstream>javac XStreamTester.java

现在运行XStreamTester来查看结果 -

C:\XStream_WORKSPACE\com\xnip\xstream>java XStreamTester

验证输出如下 -

{
   "firstName": "Mahesh",
   "lastName": "Parashar"
}