1.引入需要的jar包,在pom.xml中配置依赖
- <dependency>
- <groupId>com.thoughtworks.xstream</groupId>
- <artifactId>xstream</artifactId>
- <version>1.4.2</version>
- </dependency>
2.创建要转换的实例类,本文以简单的硬件信息为例
- package com.ajita.xstream;
- import com.thoughtworks.xstream.annotations.XStreamAlias;
- import com.thoughtworks.xstream.annotations.XStreamAsAttribute;
- @XStreamAlias("DiskInfo")
- public class DiskInfo {
- @XStreamAsAttribute
- @XStreamAlias("diskName")
- private String name;
- private int totalSize;
- private int avilableSize;
- private int usedSize;
- public String getName() {
- return name;
- }
- public void setName(String name) {
- this.name = name;
- }
- public int getTotleSize() {
- return totalSize;
- }
- public void setTotleSize(int totleSize) {
- this.totalSize = totleSize;
- }
- public int getAvilableSize() {
- return avilableSize;
- }
- public void setAvilableSize(int avilableSize) {
- this.avilableSize = avilableSize;
- }
- public int getUserSize() {
- return usedSize;
- }
- public void setUserSize(int userSize) {
- this.usedSize = userSize;
- }
- public String toString() {
- StringBuilder sb = new StringBuilder();
- sb.append(name + " ");
- sb.append("TotalSize:" + totalSize + "|Used Size:" + usedSize
- + "|Available Size:" + avilableSize);
- return sb.toString();
- }
- }
- package com.ajita.xstream;
- import java.util.List;
- import com.thoughtworks.xstream.annotations.XStreamAlias;
- @XStreamAlias("HardwareInfo")
- public class HardwareInfo {
- private String cpuInfo;
- private String networkInfo;
- private List<DiskInfo> diskInfos;
- public String getCpuInfo() {
- return cpuInfo;
- }
- public void setCpuInfo(String cpuInfo) {
- this.cpuInfo = cpuInfo;
- }
- public String getNetworkInfo() {
- return networkInfo;
- }
- public void setNetworkInfo(String networkInfo) {
- this.networkInfo = networkInfo;
- }
- public List<DiskInfo> getDiskInfos() {
- return diskInfos;
- }
- public void setDiskInfos(List<DiskInfo> diskInfos) {
- this.diskInfos = diskInfos;
- }
- public String toString() {
- StringBuilder sb = new StringBuilder();
- sb.append(cpuInfo);
- sb.append(" ");
- sb.append(networkInfo);
- sb.append(" ");
- for (DiskInfo disk : diskInfos) {
- sb.append(disk.toString());
- sb.append(" ");
- }
- return sb.toString();
- }
- }
3.新建测试代码
- package com.ajita.xstream;
- import java.util.ArrayList;
- import com.thoughtworks.xstream.XStream;
- public class TestXStream {
- /**
- * @param args
- */
- public static void main(String[] args) {
- DiskInfo disk1 = new DiskInfo();
- disk1.setName("D:\");
- disk1.setTotleSize(100);
- disk1.setUserSize(20);
- disk1.setAvilableSize(80);
- DiskInfo disk2 = new DiskInfo();
- disk2.setName("E:\");
- disk2.setTotleSize(200);
- disk2.setUserSize(40);
- disk2.setAvilableSize(160);
- ArrayList<DiskInfo> diskInfos = new ArrayList<DiskInfo>();
- diskInfos.add(disk1);
- diskInfos.add(disk2);
- HardwareInfo hwInfo = new HardwareInfo();
- hwInfo.setCpuInfo("cpu info is ...");
- hwInfo.setNetworkInfo("network info is ...");
- hwInfo.setDiskInfos(diskInfos);
- XStream xStream = new XStream();
- xStream.autodetectAnnotations(true);
- String xml = xStream.toXML(hwInfo);
- System.out.println(xml);
- HardwareInfo info2 = (HardwareInfo) xStream.fromXML(xml);
- System.out.println(info2);
- }
- }
输出如下:
- <HardwareInfo>
- <cpuInfo>cpu info is ...</cpuInfo>
- <networkInfo>network info is ...</networkInfo>
- <diskInfos>
- <DiskInfo diskName="D:">
- <totalSize>100</totalSize>
- <avilableSize>80</avilableSize>
- <usedSize>20</usedSize>
- </DiskInfo>
- <DiskInfo diskName="E:">
- <totalSize>200</totalSize>
- <avilableSize>160</avilableSize>
- <usedSize>40</usedSize>
- </DiskInfo>
- </diskInfos>
- </HardwareInfo>
- cpu info is ...
- network info is ...
- D:
- TotalSize:100|Used Size:20|Available Size:80
- E:
- TotalSize:200|Used Size:40|Available Size:160
4.常用XStream注解
1)@XStreamAlias注解可在类与属性上使用设置名称,相当于: xstream.alias("blog", Blog.class);
2)@XStreamImplicit去集合节点名:相当于 xstream.addImplicitCollection(Blog.class, "entries");
3) @XStreamConverter(SingleValueCalendarConverter.class)
private Calendar createdTime = new GregorianCalendar();