xtream 示例介绍

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xtream 示例介绍

ghost丶桃子 2016-05-19 14:02:13 浏览1275
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1 xStream框架 
xStream可以轻易的将Java对象和xml文档相互转换,而且可以修改某个特定的属性和节点名称,而且也支持json的转换; 
官网: 
http://xstream.codehaus.org/ 
2 about xtream 
xtream  是一个简单的工具包,用来把对象序列化成xml配置文件,并且也可以把xml反序化成对象。 
4Features 功能特点 
简单易用,不需要配置映射,速度快并且占用内存小,生成的xml配置文件很干净,不带额外无用信息,这样在反映序列化的时候容易读取。不需要修改序列化对象的类型。支持类图。与xmlapi 整合。详细的返回错误信息。可修改的输出 显示。 
4 点型应用 
传输:网络传输 
持久化:生成的XML可以写到文件,做持久化。 
配置:XML最常用的配置文件。 
单元测试 
5局限 
If using the enhanced mode, XStream can re-instantiate classes that do not have a default constructor. However, if using a different JVM like an old JRockit version, a JDK 1.3 or you have restrictions because of a SecurityManager, a default constructor is required. 
The enhanced mode is also necessary to restore final fields for any JDK < 1.5. This implies deserialization of instances of an inner class. 
Auto-detection of annotations may cause race conditions. Preprocessing annotations is safe though. 

6准备一个pojo对象 

Java代码

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    package com.entity;  
    import java.util.Date;  
    bpublic class Student {  
        private int id;  
        private String name;  
        private String email;  
        private String address;  
        private Birthday birthday;  
        private Date registDate;  
           
        public Date getRegistDate() {  
            return registDate;  
        }  
       
        public void setRegistDate(Date registDate) {  
            this.registDate = registDate;  
        }  
         public int getId() {  
            return id;  
        }  
         public void setId(int id) {  
            this.id = id;  
        }  
         public String getName() {  
            return name;  
        }  
         public void setName(String name) {  
            this.name = name;  
        }  
         public String getEmail() {  
            return email;  
        }  
         public void setEmail(String email) {  
            this.email = email;  
        }  
         public String getAddress() {  
            return address;  
        }  
         public void setAddress(String address) {  
            this.address = address;  
        }  
         public Birthday getBirthday() {  
            return birthday;  
        }  
         public void setBirthday(Birthday birthday) {  
            this.birthday = birthday;  
        }  
       
        // getter、setter  
        public String toString() {  
            return this.name + "#" this.id + "#" this.address + "#"  
                    this.birthday + "#" this.email;  
        }  
    }




7 bean 转成 xml 

测试代码: 

Java代码

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    package com.test;  
       
    import java.io.ObjectInputStream;  
    import java.io.ObjectOutputStream;  
    import java.util.Date;  
    import org.junit.Before;  
    import org.junit.Test;  
    import com.entity.Birthday;  
    import com.entity.Student;  
    import com.thoughtworks.xstream.XStream;  
       
    @SuppressWarnings("unchecked")  
    public class XStreamTest {  
       
        private XStream xstream = null;  
        private ObjectOutputStream out = null;  
        private ObjectInputStream in = null;  
        private Student bean = null;  
       
        @Before  
        public void init() {  
            try {  
                xstream = new XStream();  
                bean = getTestStudent();  
                // xstream = new XStream(new DomDriver()); // 需要xpp3 jar  
            catch (Exception e) {  
                e.printStackTrace();  
            }  
        }  
       
        public static void main(String[] args) {  
            XStreamTest test = new XStreamTest();  
            test.init();  
            test.testWriteBean2XML_01();  
        }  
       
        public final void fail(String string) {  
            System.out.println(string);  
        }  
       
        public final void failRed(String string) {  
            System.err.println(string);  
        }  
       
        /** 
         * bean 2 XML 
         * */  
        @Test  
        public void testWriteBean2XML_01() {  
            try {  
                fail("------------Bean->XML------------");  
                fail(xstream.toXML(bean));  
            catch (Exception e) {  
                e.printStackTrace();  
            }  
        }  
       
        /** 
         * 类重命名后的XML 
         * */  
        @Test  
        public void testWriteBean2XML_02() {  
            try {  
                fail("-----------类重命名后的XML------------");  
                // 类重命名  
                xstream.alias("student", Student.class);  
                xstream.aliasField("生日", Student.class"birthday");  
                xstream.aliasField("生日日期", Birthday.class"birthday");  
                fail(xstream.toXML(bean));  
            catch (Exception e) {  
                e.printStackTrace();  
            }  
        }  
       
        /** 
         * 类重命名后的XML 
         * */  
        @Test  
        public void testWriteBean2XML_03() {  
            try {  
                fail("-----------属性重命名后的XML------------");  
                // 属性重命名  
                xstream.aliasField("邮件", Student.class"email");  
                fail(xstream.toXML(bean));  
            catch (Exception e) {  
                e.printStackTrace();  
            }  
        }  
       
        /** 
         * 包重命名后的XML 
         * */  
        @Test  
        public void testWriteBean2XML_04() {  
            try {  
                fail("-----------包重命名后的XML------------");  
                //包重命名  
                xstream.aliasPackage("modile""com.entity");  
                fail(xstream.toXML(bean));  
            catch (Exception e) {  
                e.printStackTrace();  
            }  
        }  
       
        /** 
         * 构造数据 
         * */  
        private Student getTestStudent() {  
            Student bean = new Student();  
            bean.setAddress("china");  
            bean.setEmail("email");
            bean.setId(1);  
            bean.setName("jack");  
            Birthday day = new Birthday();  
            day.setBirthday("2010-11-22");  
            bean.setBirthday(day);  
            bean.setRegistDate(new Date());  
            return bean;  
        }  
    }



测试结果: 
------------Bean->XML------------ 

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<com.entity.Student
  <id>1</id
  <name>jack</name
  <email>email</email
  <address>china</address
  <birthday
    <birthday>2010-11-22</birthday
  </birthday
  <registDate>2011-07-11 22:33:02.359 CST</registDate
</com.entity.Student>


-----------类重命名后的XML------------ 

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<student
  <id>1</id
  <name>jack</name
  <email>email</email
  <address>china</address
  <生日> 
    <生日日期>2010-11-22</生日日期> 
  </生日> 
  <registDate>2011-07-11 22:33:02.390 CST</registDate
</student>


-----------属性重命名后的XML------------ 

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<com.entity.Student
  <id>1</id
  <name>jack</name
  <邮件>email</邮件> 
  <address>china</address
  <birthday
    <birthday>2010-11-22</birthday
  </birthday
  <registDate>2011-07-11 22:33:02.406 CST</registDate
</com.entity.Student>


-----------包重命名后的XML------------ 

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<modile.Student
  <id>1</id
  <name>jack</name
  <email>e</email
  <address>china</address
  <birthday
    <birthday>2010-11-22</birthday
  </birthday
  <registDate>2011-07-11 22:33:02.406 CST</registDate
</modile.Student>



8 List 2 XML 

Java代码  收藏代码

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    fail("------------Listg<Strudent>->XML------------");  
    List<Student> list = new ArrayList<Student>();  
    list.add(bean);  
    Student s1 = getTestStudent();  
    s1.setId(2);  
    list.add(s1);  
    fail(xstream.toXML(list));



结果: 
------------Listg<Strudent>->XML------------ 

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<list
  <com.entity.Student
    <id>1</id
    <name>jack</name
    <email>email</email
    <address>china</address
    <birthday
      <birthday>2010-11-22</birthday
    </birthday
    <registDate>2011-07-11 22:47:08.0 CST</registDate
  </com.entity.Student
  <com.entity.Student
    <id>2</id
    <name>jack</name
    <email>email</email
    <address>china</address
    <birthday
      <birthday>2010-11-22</birthday
    </birthday
    <registDate>2011-07-11 22:47:08.0 CST</registDate
  </com.entity.Student
</list>
特别说明:尊重作者的劳动成果,转载请注明出处哦~~~http://blog.yemou.net/article/query/info/tytfjhfascvhzxcyt271

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