一、背景
最近接接口，然后了，返回的接口有两种格式，一种是xml的，一种是json格式的，所以我首选是接收json格式的，但是json格式的数据有一个弊端，那就是字段名称全是简写的。但是xml的名称都是见名知意的，两种方式都尝试了下，最后还是选择xml的格式。
二、转换方式
xml格式的直接转对象，也有好多选择，我这边使用了两种方式，其一是XStream，另外一种是jaxb;现在分别数说说了！！！
（1）Xtream
<?xml version="1.0" encoding="utf-8"?>
<result>
<errorCode>success</errorCode>
<errorMsg>成功</errorMsg>
<orders>
<order>
<booker>是我的</booker>
<checkInDate>2016-12-26</checkInDate>
<checkOutDate>2016-12-27</checkOutDate>
<guest>是我的</guest>
<hotelName>深圳南澳520度假主题客栈</hotelName>
<orderNo>HT16122601101</orderNo>
<orderStatus>1</orderStatus>
<orderStatusName>fasfsa</orderStatusName>
<orderTime>2016-12-26 16:19:35.0</orderTime>
</order>
<order>
<booker>就是我的</booker>
<checkInDate>2016-09-06</checkInDate>
<checkOutDate>2016-09-07</checkOutDate>
<guest>就是我的</guest>
<hotelName>深圳南澳520度假主题客栈</hotelName>
<orderNo>HT16090600362</orderNo>
<orderStatus>1</orderStatus>
<orderStatusName>dfas</orderStatusName>
<orderTime>2016-09-06 14:06:15.0</orderTime>
</order>
</orders>
</result>
需要转换的xml字符串
转换代码,result就是上面的字符串
String result = HttpClient.order("getOrderList", orderParam);
XStream xstream = new XStream();
xstream.alias("result", ResultBean.class);
xstream.alias("order", Order.class);
orderInfo = (ResultBean) xstream.fromXML(result);
给出ResultBean对象和Order对象数据
package com.mouse.moon.xml;
import java.util.List;
public class ResultBean {
private String errorCode;
private String errorMsg;
private List<Order> orders;
public String getErrorCode() {
return errorCode;
}
public void setErrorCode(String errorCode) {
this.errorCode = errorCode;
}
public String getErrorMsg() {
return errorMsg;
}
public void setErrorMsg(String errorMsg) {
this.errorMsg = errorMsg;
}
public List<Order> getOrders() {
return orders;
}
public void setOrders(List<Order> orders) {
this.orders = orders;
}
}
package com.mouse.moon.xml;
public class Order {
private String booker;
private String checkInDate;
private String checkOutDate;
private String guest;
private String hotelName;
private String orderNo;
private String orderStatus;
private String orderStatusName;
private String orderTime;
public String getBooker() {
return booker;
}
public void setBooker(String booker) {
this.booker = booker;
}
public String getCheckInDate() {
return checkInDate;
}
public void setCheckInDate(String checkInDate) {
this.checkInDate = checkInDate;
}
public String getCheckOutDate() {
return checkOutDate;
}
public void setCheckOutDate(String checkOutDate) {
this.checkOutDate = checkOutDate;
}
public String getGuest() {
return guest;
}
public void setGuest(String guest) {
this.guest = guest;
}
public String getHotelName() {
return hotelName;
}
public void setHotelName(String hotelName) {
this.hotelName = hotelName;
}
public String getOrderNo() {
return orderNo;
}
public void setOrderNo(String orderNo) {
this.orderNo = orderNo;
}
public String getOrderStatus() {
return orderStatus;
}
public void setOrderStatus(String orderStatus) {
this.orderStatus = orderStatus;
}
public String getOrderStatusName() {
return orderStatusName;
}
public void setOrderStatusName(String orderStatusName) {
this.orderStatusName = orderStatusName;
}
public String getOrderTime() {
return orderTime;
}
public void setOrderTime(String orderTime) {
this.orderTime = orderTime;
}
}
所以如上述转换代码所示，需要将你的对象与xml的节点数据对应上
xstream.alias("result", ResultBean.class);
另外说一点，比如有的数据节点上还有数据
<?xml version="1.0" encoding="utf-8"?>
<result>
<errorCode>success</errorCode>
<errorMsg>成功</errorMsg>
<orders>
<order booerId="123">
我得
</order>
</orders>
</result>
比如在order节点上还有一个预订人的id，那么在order类就需要做修改
就需要在Order如下
@XStreamConverter(value=ToAttributedValueConverter.class, strings={"booker"})
public class Order {
private String booker;
@XStreamAsAttribute
private String booerId;
public String getBooker() {
return booker;
}
public void setBooker(String booker) {
this.booker = booker;
}
public String getBooerId() {
return booerId;
}
public void setBooerId(String booerId) {
this.booerId = booerId;
}
}
(2)JAXB
String result = HttpClient.order("getOrderList", orderParam);
StringReader read = new StringReader(result);
InputSource source = new InputSource(read);
JAXBContext jaxbContext = JAXBContext.newInstance(ResultBean .class);
Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
ResultBean resultBean= (ResultBean ) jaxbUnmarshaller.unmarshal(source);
类中需要做注解配置
package com.mouse.moon.xml;
import java.util.List;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlType;
@XmlRootElement(name="result")
@XmlType(propOrder = { "errorCode","errorMsg", "orders"})
public class ResultBean {
private String errorCode;
private String errorMsg;
private List<Order> orders;
public String getErrorCode() {
return errorCode;
}
@XmlElement
public void setErrorCode(String errorCode) {
this.errorCode = errorCode;
}
public String getErrorMsg() {
return errorMsg;
}
@XmlElement
public void setErrorMsg(String errorMsg) {
this.errorMsg = errorMsg;
}
public List<Order> getOrders() {
return orders;
}
@XmlElement
public void setOrders(List<Order> orders) {
this.orders = orders;
}
}
package com.mouse.moon.xml;
import javax.xml.bind.annotation.XmlRootElement;
@XmlRootElement
public class Order {
private String booker;
private String checkInDate;
private String checkOutDate;
private String guest;
private String hotelName;
private String orderNo;
private String orderStatus;
private String orderStatusName;
private String orderTime;
public String getBooker() {
return booker;
}
public void setBooker(String booker) {
this.booker = booker;
}
public String getCheckInDate() {
return checkInDate;
}
public void setCheckInDate(String checkInDate) {
this.checkInDate = checkInDate;
}
public String getCheckOutDate() {
return checkOutDate;
}
public void setCheckOutDate(String checkOutDate) {
this.checkOutDate = checkOutDate;
}
public String getGuest() {
return guest;
}
public void setGuest(String guest) {
this.guest = guest;
}
public String getHotelName() {
return hotelName;
}
public void setHotelName(String hotelName) {
this.hotelName = hotelName;
}
public String getOrderNo() {
return orderNo;
}
public void setOrderNo(String orderNo) {
this.orderNo = orderNo;
}
public String getOrderStatus() {
return orderStatus;
}
public void setOrderStatus(String orderStatus) {
this.orderStatus = orderStatus;
}
public String getOrderStatusName() {
return orderStatusName;
}
public void setOrderStatusName(String orderStatusName) {
this.orderStatusName = orderStatusName;
}
public String getOrderTime() {
return orderTime;
}
public void setOrderTime(String orderTime) {
this.orderTime = orderTime;
}
}
这个其实在网上也是有资料的https://www.javacodegeeks.com/2013/02/jaxb-tutorial-getting-started.html
注意在一级中的每个set属性上都要加上 @XmlElement，且不要再get方法上加，否则转换报错
使用jaxb将对象转换为xml的方式如下
StringWriter writer = new StringWriter();
try {
JAXBContext jaxbContext = JAXBContext.newInstance(bean.getClass());
Marshaller marshaller = jaxbContext.createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
marshaller.setProperty(Marshaller.JAXB_FRAGMENT, Boolean.TRUE);
marshaller.setProperty(Marshaller.JAXB_ENCODING, "UTF-8");
marshaller.marshal(bean, writer);
} catch (JAXBException e) {
e.printStackTrace();
} finally {
try {
writer.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return writer.getBuffer().toString();
浩语
__
__ _ ____ __| |__ _____ ___
\ \/ \/ / | \ | \\__ \ / _ \
\ /| | / Y \/ __ \( <_> )
\/\_/ |____/|___| (____ /\____/
\/ \/
走在自己的路上，遇到要遇到的人，经历要经历的事，这才是我们需要面对的。
