转自:https://www.cnblogs.com/tang9139/p/4825610.html
http://www.cnblogs.com/wlsblog/p/7452882.html
这两东东本质上是有差别的,JAXB称为OX binding工具,XStream应该算序列化工具,但OX binding工具也会marshall和unmarshall,所以包含了序列化这一部分。序列化工具不一定需要提供binding的功能。既然都玩序列化,那就简单地比较一下它们两在序列化方面的强弱吧。
JAXB:Toplink JAXB 10133,应该是JAXB 1.1标准 (取消了schema的validation功能)
XStream:1.3.1
数据长度:
类型 |
长度 |
内容 |
XStraem |
351 |
<com.oocl.frm.ws.sample.Employee> <name>Liufei</name> <age>40</age> <address> <street>Zhaojiabang</street> <country>China</country> <city>Shanghai</city> <doorNum>789</doorNum> <empName>Afka liu</empName> </address> <salary>20000.0</salary> <isActive>false</isActive> <sexy>F</sexy> </com.oocl.frm.ws.sample.Employee> |
Toplink JAXB |
589(已经去掉了white space) |
<?xml version="1.0" encoding="UTF-8"?> <ns0:employee xsi:schemaLocation="http://www.oocl.com/frm/ws/jaxb" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:ns0="http://www.oocl.com/frm/ws/jaxb" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><ns0:name>Liufei</ns0:name><ns0:age>40</ns0:age><ns0:salary>20000.0</ns0:salary><ns0:sexy>F</ns0:sexy><ns0:isActive>false</ns0:isActive><ns0:address><ns0:street>Zhaojiabang</ns0:street><ns0:country>China</ns0:country><ns0:city>Shanghai</ns0:city><ns0:doorNum>789</ns0:doorNum><ns0:empName>Afka liu</ns0:empName></ns0:address></ns0:employee> |
时间:序列化和反序列化1000000次。
类型 |
序列化(ms) |
反序列化(ms) |
XStraem |
90148 |
135878 |
Toplink JAXB |
34872 |
56557 |
结果对比:数据量XStream占优势,时间性能上Toplink Jaxb占明显优势
总结(只从序列化功能角度看)
JAXB: 优点
- J2EE标准
- 运行时间比XStream少
缺点
- 用起来不方便:需要把手动的把business object转换成schema object,当然也可以直接将schema object作为business object,或者采用反射的方法。
- 有一定的局限性:需要schema或者annotation
- 数据量稍大
XStream优点:
- 用起来方便
- 不需要schema,拿过来就转
- 数据量稍小
缺点:
- 非标准
- 时间性能差
- ------------------------------
-
Java Architecture for XML Binding (JAXB) 是一个业界的标准,是一项可以根据XML Schema产生Java类的技术。该过程中,JAXB也提供了将XML实例文档反向生成Java对象树的方法,并能将Java对象树的内容重新写到XML实例文档。从另一方面来讲,JAXB提供了快速而简便的方法将XML模式绑定到Java表示,从而使得Java开发者在Java应用程序中能方便地结合XML数据和处理函数。
这意味着你不需要处理甚至不需要知道XML编程技巧就能在Java应用程序中利用平台核心XML数据的灵活性。而且,可以充分利用XML的优势而不用依赖于复杂的XML处理模型如SAX或DOM。JAXB 隐藏了细节并且取消了SAX和DOM中没用的关系——生成的JAXB类仅描述原始模型中定义的关系。其结果是结合了高度可移植Java代码和高度可移植的XML数据。其中这些代码可用来创建灵活、轻便的应用程序和Web服务。 JAXB(java Architecture for XML Binding) 是一个业界的标准,是一项可以根据XML Schema产生Java类的技术。该过程中,JAXB也提供了将XML实例文档反向生成Java对象树的方法,并能将Java对象树的内容重新写到 XML实例文档。 Jaxb 2.0是JDK 1.6的组成部分。我们不需要下载第三方jar包 即可做到轻松转换。Jaxb2使用了JDK的新特性,如:Annotation、GenericType等,需要在即将转换的JavaBean中添加annotation注解。
一、重要概念
- JAXBContext类,是应用的入口,用于管理XML/Java绑定信息。
- Marshaller接口,将Java对象序列化为XML数据。
- Unmarshaller接口,将XML数据反序列化为Java对象。
- @XmlType,将Java类或枚举类型映射到XML模式类型
- @XmlAccessorType(XmlAccessType.FIELD) ,控制字段或属性的序列化。FIELD表示JAXB将自动绑定Java类中的每个非静态的(static)、非瞬态的(由@XmlTransient标 注)字段到XML。其他值还有XmlAccessType.PROPERTY和XmlAccessType.NONE。
- @XmlAccessorOrder,控制JAXB 绑定类中属性和字段的排序。
- @XmlJavaTypeAdapter,使用定制的适配器(即扩展抽象类XmlAdapter并覆盖marshal()和unmarshal()方法),以序列化Java类为XML。
- @XmlElementWrapper ,对于数组或集合(即包含多个元素的成员变量),生成一个包装该数组或集合的XML元素(称为包装器)。
- @XmlRootElement,将Java类或枚举类型映射到XML元素。
- @XmlElement,将Java类的一个属性映射到与属性同名的一个XML元素。
- @XmlAttribute,将Java类的一个属性映射到与属性同名的一个XML属性。
二、工具类
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455package
com.ehaoyao.jobcenter.order.webservices.jztdzy.Util;
import
org.apache.poi.ss.formula.functions.T;
import
javax.xml.bind.*;
import
javax.xml.namespace.QName;
import
java.io.Reader;
import
java.io.StringReader;
import
java.io.StringWriter;
public
class
JAXBUtil {
/**
* beanToXml
* @param obj
* @param encoding
* @return
*/
public
static
String toXml(Object obj,String encoding) {
try
{
StringWriter sw =
new
StringWriter();
JAXBContext context = JAXBCache.instance().getJAXBContext(obj.getClass());
Marshaller marshaller = context.createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
marshaller.setProperty(Marshaller.JAXB_FRAGMENT,
true
);
// 是否省略xm头声明信息
marshaller.setProperty(Marshaller.JAXB_ENCODING, encoding);
marshaller.marshal(obj, sw);
return
sw.toString().replace(
"ns2:"
,
""
).replace(
":ns2"
,
""
);
}
catch
(JAXBException e) {
e.printStackTrace();
return
e.getMessage();
}
}
/**
* xmlToBean
* @param xml
* @param c
* @param <T>
* @return
*/
@SuppressWarnings
(
"unchecked"
)
public
static
<T> T toBean(String xml, Class<T> c,String encoding) {
T t =
null
;
try
{
JAXBContext context = JAXBContext.newInstance(c);
Unmarshaller unmarshaller = context.createUnmarshaller();
t = (T) unmarshaller.unmarshal(
new
StringReader(xml));
}
catch
(Exception e) {
e.printStackTrace();
}
return
t;
}
}
123456789101112131415161718192021222324package
com.ehaoyao.jobcenter.order.webservices.jztdzy.Util;
import
java.util.concurrent.ConcurrentHashMap;
import
java.util.concurrent.ConcurrentMap;
import
javax.xml.bind.JAXBContext;
import
javax.xml.bind.JAXBException;
public
final
class
JAXBCache {
private
static
final
JAXBCache instance =
new
JAXBCache();
private
final
ConcurrentMap<String, JAXBContext> contextCache =
new
ConcurrentHashMap<String, JAXBContext>();
private
JAXBCache() {
}
public
static
JAXBCache instance() {
return
instance;
}
JAXBContext getJAXBContext(Class<?> clazz)
throws
JAXBException {
JAXBContext context = contextCache.get(clazz.getName());
if
( context ==
null
)
{
context = JAXBContext.newInstance(clazz);
contextCache.putIfAbsent(clazz.getName(), context);
}
return
context;
}
}
123456package
com.ehaoyao.jobcenter.order.webservices.jztdzy.Util;
public
class
XMLNameSpace {
public
static
final
String ADMIN_PREFIX =
""
;
public
static
final
String ADMIN_URI =
"http://WebServices.WS.JointownTech.com//"
;
}
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657package
com.ehaoyao.jobcenter.order.webservices.jztdzy.Util;
import
com.ehaoyao.jobcenter.order.webservices.jztdzy.model.ElecPrescription;
import
com.thoughtworks.xstream.annotations.XStreamAlias;
import
javax.xml.bind.annotation.XmlAccessType;
import
javax.xml.bind.annotation.XmlAccessorType;
import
javax.xml.bind.annotation.XmlElement;
import
javax.xml.bind.annotation.XmlType;
/**
* Created by wls on 2017/8/15.
*/
@XmlAccessorType
(XmlAccessType.FIELD)
@XmlType
(propOrder= {
"result"
,
"errorDesc"
,
"elecPrescription"
})
public
class
AddPrescriptionToMes2ItemResponse {
// @XStreamAlias("result")
@XmlElement
(name=
"result"
,namespace = XMLNameSpace.ADMIN_URI)
private
String result;
@XmlElement
(required =
false
)
private
String errorDesc;
@XmlElement
(required =
false
)
private
ElecPrescription elecPrescription;
public
String getResult() {
return
result;
}
public
void
setResult(String result) {
this
.result = result;
}
public
String getErrorDesc() {
return
errorDesc;
}
public
void
setErrorDesc(String errorDesc) {
this
.errorDesc = errorDesc;
}
public
ElecPrescription getElecPrescription() {
return
elecPrescription;
}
public
void
setElecPrescription(ElecPrescription elecPrescription) {
this
.elecPrescription = elecPrescription;
}
@Override
public
String toString() {
return
"AddPrescriptionToMes2ItemResponse{"
+
"result='"
+ result + '
''
+
", errorDesc='"
+ errorDesc + '
''
+
", elecPrescription="
+ elecPrescription +
'}'
;
}
}
123456789101112131415161718192021222324252627282930313233package
com.ehaoyao.jobcenter.order.webservices.jztdzy.Util;
import
com.thoughtworks.xstream.annotations.XStreamAlias;
import
javax.xml.bind.annotation.*;
import
javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
/**
* Created by wls on 2017/8/15.
*/
//@XStreamAlias("string")
@XmlRootElement
(name =
"string"
,namespace = XMLNameSpace.ADMIN_URI)
@XmlAccessorType
(XmlAccessType.FIELD)
@XmlType
(propOrder= {
"response"
})
public
class
AddPrescriptionToMes2Response {
@XmlElement
(name =
"response"
,namespace = XMLNameSpace.ADMIN_URI)
private
AddPrescriptionToMes2ItemResponse response;
public
AddPrescriptionToMes2ItemResponse getResponse() {
return
response;
}
public
void
setResponse(AddPrescriptionToMes2ItemResponse response) {
this
.response = response;
}
@Override
public
String toString() {
return
"AddPrescriptionToMes2Response{"
+
"response="
+ response +
'}'
;
}
}
12345678910111213141516171819202122232425262728293031323334353637package
com.ehaoyao.jobcenter.order.webservices.jztdzy.Util;
import
com.ehaoyao.jobcenter.order.webservices.jztdzy.model.ElecPrescription;
import
javax.xml.bind.annotation.XmlAccessType;
import
javax.xml.bind.annotation.XmlAccessorType;
import
javax.xml.bind.annotation.XmlElement;
import
javax.xml.bind.annotation.XmlType;
/**
* Created by wls on 2017/8/17.
*/
@XmlAccessorType
(XmlAccessType.FIELD)
@XmlType
(propOrder= {
"result"
,
"errorDesc"
},namespace = XMLNameSpace.ADMIN_URI)
public
class
SetWXPrescriptionInfoItemResponse {
@XmlElement
(name =
"result"
,namespace = XMLNameSpace.ADMIN_URI)
private
ElecPrescription result;
private
String errorDesc;
public
ElecPrescription getResult() {
return
result;
}
public
void
setResult(ElecPrescription result) {
this
.result = result;
}
public
String getErrorDesc() {
return
errorDesc;
}
public
void
setErrorDesc(String errorDesc) {
this
.errorDesc = errorDesc;
}
}
12345678910111213141516171819202122232425package
com.ehaoyao.jobcenter.order.webservices.jztdzy.Util;
import
com.thoughtworks.xstream.annotations.XStreamAlias;
import
javax.xml.bind.annotation.*;
/**
* Created by wls on 2017/8/17.
*/
//@XStreamAlias("string")
@XmlRootElement
(name =
"string"
,namespace = XMLNameSpace.ADMIN_URI)
@XmlAccessorType
(XmlAccessType.FIELD)
@XmlType
(propOrder= {
"response"
})
public
class
SetWXPrescriptionInfoResponse {
@XmlElement
(name =
"response"
,namespace = XMLNameSpace.ADMIN_URI)
private
SetWXPrescriptionInfoItemResponse response;
public
SetWXPrescriptionInfoItemResponse getResponse() {
return
response;
}
public
void
setResponse(SetWXPrescriptionInfoItemResponse response) {
this
.response = response;
}
}
三、测试类
12345678910111213141516171819202122232425262728293031323334353637package
com.ehaoyao.jobcenter.test;
import
com.alibaba.fastjson.JSONObject;
import
com.ehaoyao.jobcenter.order.webservices.jztdzy.Util.AddPrescriptionToMes2Response;
import
com.ehaoyao.jobcenter.order.webservices.jztdzy.Util.JAXBUtil;
import
com.ehaoyao.jobcenter.order.webservices.jztdzy.Util.SetWXPrescriptionInfoResponse;
import
com.ehaoyao.jobcenter.order.webservices.jztdzy.model.ElecPrescription;
import
org.apache.poi.ss.formula.functions.T;
import
static
org.junit.Assert.*;
public
class
JaxbUtilTest {
public
static
void
main(String[] args) {
ElecPrescription elecPrescription =
new
ElecPrescription();
elecPrescription.setAddress(
"测试地址"
);
elecPrescription.setAge(
12
);
elecPrescription.setAgentNum(
1
);
elecPrescription.setBillDates(
"2017-08-19 12:02:21"
);
elecPrescription.setBlank2(
"1"
);
elecPrescription.setBlank3(
"1"
);
elecPrescription.setBusinessId(
"1435"
);
String ret = JAXBUtil.toXml(elecPrescription,
"UTF-8"
);
System.out.println(ret);
elecPrescription = (ElecPrescription) JAXBUtil.toBean(ret,ElecPrescription.
class
,
"UTF-8"
);
System.out.println(elecPrescription);
ret =
"<string xmlns="http://WebServices.WS.JointownTech.com//"><response><result>1</result></response></string>"
;
AddPrescriptionToMes2Response addPrescriptionToMes2Response = JAXBUtil.toBean(ret,AddPrescriptionToMes2Response.
class
,
"UTF-8"
);
System.out.println(addPrescriptionToMes2Response!=
null
? JSONObject.toJSONString(addPrescriptionToMes2Response):
null
);
ret =
"<string xmlns="http://WebServices.WS.JointownTech.com//"><response><result><BillDates>2017-08-16</BillDates><OutPrescriptionCode>100004</OutPrescriptionCode><OutPrescriptionSn>1004</OutPrescriptionSn><tpyq>代煎</tpyq><zgyq></zgyq><Patient>张三</Patient><Gender>女</Gender><Age>12</Age><CFDates>2017-08-17</CFDates><IsPregnancy>否</IsPregnancy><cflx>外用</cflx><AgentNum>1</AgentNum><Remark></Remark><Opinion></Opinion><BusinessName>好药师三方渠道</BusinessName><orgname>湖北公司</orgname><Dosages>1</Dosages><jyyq>1</jyyq><jyfa>微压(密闭)解表(15min)</jyfa><PatientCode></PatientCode><PictureIP>http://10.2.72.200:131/DCIM/010100003639731150</PictureIP><GoodsDatas><GoodsData><GoodsName>炒蒺藜</GoodsName><Dosage>1</Dosage><GoodsTpyq>无</GoodsTpyq><InvoiceP>0</InvoiceP></GoodsData></GoodsDatas><LogisticsCost>0</LogisticsCost><ProcessingCost>0</ProcessingCost><cfzt>作废</cfzt><cfjd><CFREVIEWSTAFF></CFREVIEWSTAFF><CFREVIEWTIME></CFREVIEWTIME><MIXSTAFF></MIXSTAFF><MIXREQUESTTIME></MIXREQUESTTIME><MIXSURETIME></MIXSURETIME><MIXREVIEWSTAFF></MIXREVIEWSTAFF><MIXREVIEWTIME></MIXREVIEWTIME><SOAKSTAFF></SOAKSTAFF><SOAKREQUESTTIME></SOAKREQUESTTIME><SOAKSURETIME></SOAKSURETIME><TISANESTAFF></TISANESTAFF><TISANEREQUESTTIME></TISANEREQUESTTIME><TISANESURETIME></TISANESURETIME> <OINTMENTSTAFF></OINTMENTSTAFF><OINTMENTREQUESTTIME></OINTMENTREQUESTTIME><OINTMENTSURETIME></OINTMENTSURETIME><INNERPACKINGSTAFF></INNERPACKINGSTAFF><INNERPACKINGTIME></INNERPACKINGTIME><OUTERPACKINGSTAFF>zyadmin</OUTERPACKINGSTAFF><OUTERPACKINGTIME>2017-08-16 16:41:56</OUTERPACKINGTIME></cfjd><psjd><LogisticsCompany></LogisticsCompany><ExpressNumber></ExpressNumber></psjd></result></response></string>"
;
SetWXPrescriptionInfoResponse setWXPrescriptionInfoResponse = JAXBUtil.toBean(ret,SetWXPrescriptionInfoResponse.
class
,
"UTF-8"
);
System.out.println(setWXPrescriptionInfoResponse!=
null
? JSONObject.toJSONString(setWXPrescriptionInfoResponse):
null
);
}
}
}
四、运行效果