@XStreamAlias使用
一、 特點(diǎn):
簡化的API;
無映射文件;
高性能,低內(nèi)存占用;
整潔的XML;
不需要修改對象;支持內(nèi)部私有字段,不需要setter/getter方法
提供序列化接口;
自定義轉(zhuǎn)換類型策略;
XStream的優(yōu)點(diǎn)很多，但是也有一些小bug，比如在定義別名中的下劃線“_”轉(zhuǎn)換為xml后會變成“__”這個符號， 不過下劃線問題可以用下面這個解決
XStream xStream = new XStream(new XppDriver(new XmlFriendlyNameCoder("_-", "_")));
二、 使用場景
Transport轉(zhuǎn)換
Persistence 持久化對象
Configuration 配置
Unit Tests 單元測試
Interface服務(wù)之間XML消息的交互
案例代碼：
@XStreamAlias("kfpt_dept") //注意這個，后面變成了<kfpt__dept> 下劃線。。。。class Dept { private String deptName; private List<Staff> staffs; public String getDeptName() { return deptName; } public void setDeptName(String deptName) { this.deptName = deptName; } public List<Staff> getStaffs() { return staffs; } public void setStaffs(List<Staff> staffs) { this.staffs = staffs; } @Override public String toString() { return ToStringBuilder.reflectionToString(this, ToStringStyle.MULTI_LINE_STYLE); }}@XStreamAlias("kfpt_staffs")class Staff { private String name; private int age; public Staff() { super(); } public Staff(String name, int age) { super(); this.name = name; this.age = age; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } @Override public String toString() { return ToStringBuilder.reflectionToString(this, ToStringStyle.MULTI_LINE_STYLE); }}
轉(zhuǎn)換工具類：
public class XstreamUtil { /** * 將bean轉(zhuǎn)換為xml * @param obj 轉(zhuǎn)換的bean * @return bean轉(zhuǎn)換為xml */ public static String objectToXml(Object obj) { // XStream xStream = new XStream();
XStream xStream = new XStream(new XppDriver(new XmlFriendlyNameCoder("_-", "_")));//解決下劃線問題 //xstream使用注解轉(zhuǎn)換 xStream.processAnnotations(obj.getClass()); return xStream.toXML(obj); } /** * 將xml轉(zhuǎn)換為bean * @param <T> 泛型 * @param xml 要轉(zhuǎn)換為bean的xml * @param cls bean對應(yīng)的Class * @return xml轉(zhuǎn)換為bean */ public static <T> T xmlToObject(String xml, Class<T> cls){ XStream xstream = new XStream(new DomDriver()); //xstream使用注解轉(zhuǎn)換 xstream.processAnnotations(cls); return (T) xstream.fromXML(xml); }}
main方法測試
public static void main(String[] args) { //java bean 轉(zhuǎn) xml Dept d = new Dept(); List<Staff> staffs = new ArrayList<>(); Staff s1 = new Staff("wuyun", 20); Staff s2 = new Staff("lilei", 22); staffs.add(s1); staffs.add(s2); d.setDeptName("開放平臺"); d.setStaffs(staffs); System.out.println(objectToXml(d));
/*
用這個方法 XStream xStream = new XStream(); 會有下劃線問題<kfpt__dept>
<deptName>開放平臺</deptName>
<staffs>
<kfpt__staffs>
<name>wuyun</name>
<age>20</age>
</kfpt__staffs>
<kfpt__staffs>
<name>lilei</name>
<age>22</age>
</kfpt__staffs>
</staffs>
</kfpt__dept>
XStream xStream = new XStream(new XppDriver(new XmlFriendlyNameCoder("_-", "_")));//可以解決下劃線問題
<kfpt_dept>
<deptName>開放平臺</deptName>
<staffs>
<kfpt_staffs>
<name>wuyun</name>
<age>20</age>
</kfpt_staffs>
<kfpt_staffs>
<name>lilei</name>
<age>22</age>
</kfpt_staffs>
</staffs>
</kfpt_dept>
*/ //xml 轉(zhuǎn) java bean // String xml = "<kfpt__dept><deptName>開放平臺</deptName><staffs><kfpt__staffs><name>wuyun</name><age>20</age></kfpt__staffs><kfpt__staffs><name>lilei</name><age>22</age></kfpt__staffs></staffs></kfpt__dept>"; // XStream xstream = new XStream(new DomDriver()); // //xstream使用注解轉(zhuǎn)換 // xstream.processAnnotations(Dept.class); // System.out.println(((Dept) xstream.fromXML(xml)).toString()); // System.out.println(xmlToObject(xml, Dept.class).toString());
/*
com.cmcc.open.ss.vo.req.Dept@5660d2d2[
deptName=開放平臺
staffs=[com.cmcc.open.ss.vo.req.Staff@6eb1054b[
name=wuyun
age=20
], com.cmcc.open.ss.vo.req.Staff@27d2b7b3[
name=lilei
age=22
]]
]
*/
}
