XStream可以用来转换对象-XML，或者XML-对象。
官网地址：http://x-stream.github.io
小案例：
实体类
FileVo.java
package cn.pinnsvin.xml.vo;
import java.math.BigInteger;
import java.util.Date;
import java.util.List;
public class FileVo {
private String owner;
private Date createDate;
private Date lastUpdateDate;
private String authority;
private BigInteger size;
private String title;
private String content;
@Override
public String toString() {
return "FileVo [owner=" + owner + ", createDate=" + createDate + ", lastUpdateDate=" + lastUpdateDate
+ ", authority=" + authority + ", size=" + size + ", title=" + title + ", content=" + content + "]";
}
public String getOwner() {
return owner;
}
public void setOwner(String owner) {
this.owner = owner;
}
public Date getCreateDate() {
return createDate;
}
public void setCreateDate(Date createDate) {
this.createDate = createDate;
}
public Date getLastUpdateDate() {
return lastUpdateDate;
}
public void setLastUpdateDate(Date lastUpdateDate) {
this.lastUpdateDate = lastUpdateDate;
}
public String getAuthority() {
return authority;
}
public void setAuthority(String authority) {
this.authority = authority;
}
public BigInteger getSize() {
return size;
}
public void setSize(BigInteger size) {
this.size = size;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
}
FolderVo.java
package cn.pinnsvin.xml.vo;
import java.math.BigInteger;
import java.util.Date;
import java.util.List;
public class FolderVo {
private List<FileVo> files;
private List<FolderVo> folders;
private String owner;
private Date createDate;
private Date lastUpdateDate;
private String authority;
private BigInteger allSize;
private BigInteger usedSize;
@Override
public String toString() {
return "FolderVo [files=" + files + ", folders=" + folders + ", owner=" + owner + ", createDate=" + createDate
+ ", lastUpdateDate=" + lastUpdateDate + ", authority=" + authority + ", allSize=" + allSize
+ ", usedSize=" + usedSize + "]";
}
public List<FileVo> getFiles() {
return files;
}
public void setFiles(List<FileVo> files) {
this.files = files;
}
public List<FolderVo> getFolders() {
return folders;
}
public void setFolders(List<FolderVo> folders) {
this.folders = folders;
}
public String getOwner() {
return owner;
}
public void setOwner(String owner) {
this.owner = owner;
}
public Date getCreateDate() {
return createDate;
}
public void setCreateDate(Date createDate) {
this.createDate = createDate;
}
public Date getLastUpdateDate() {
return lastUpdateDate;
}
public void setLastUpdateDate(Date lastUpdateDate) {
this.lastUpdateDate = lastUpdateDate;
}
public String getAuthority() {
return authority;
}
public void setAuthority(String authority) {
this.authority = authority;
}
public BigInteger getAllSize() {
return allSize;
}
public void setAllSize(BigInteger allSize) {
this.allSize = allSize;
}
public BigInteger getUsedSize() {
return usedSize;
}
public void setUsedSize(BigInteger usedSize) {
this.usedSize = usedSize;
}
}
工具类
XStreamUtils.java
package cn.pinnsvin.xml.utils;
import java.io.File;
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.DomDriver;
import cn.pinnsvin.xml.vo.FileVo;
import cn.pinnsvin.xml.vo.FolderVo;
public class XStreamUtils {
private static XStream xStream;
static{
init();
}
public static void init(){
xStream = new XStream(new DomDriver());
xStream.registerConverter(new cn.pinnsvin.xml.utils.DateConverter("yyyyMMdd"));
myAlias();
}
public static void myAlias(){
xStream.alias("Folder", FolderVo.class);
xStream.alias("File", FileVo.class);
}
public static String objectToXML(Object object){
String xml = xStream.toXML(object);
return xml;
}
public static Object xmlToObject(String xml){
Object obj = xStream.fromXML(xml);
return obj;
}
public static Object xmlToObject(File file){
Object obj = xStream.fromXML(file);
return obj;
}
}
日期格式转换类
DateConverter.java
package cn.pinnsvin.xml.utils;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import com.thoughtworks.xstream.converters.ConversionException;
import com.thoughtworks.xstream.converters.Converter;
import com.thoughtworks.xstream.converters.MarshallingContext;
import com.thoughtworks.xstream.converters.UnmarshallingContext;
import com.thoughtworks.xstream.io.HierarchicalStreamReader;
import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
public class DateConverter implements Converter{
private String format;
public DateConverter(String format) {
super();
this.format = format;
}
@Override
public boolean canConvert(Class clazz) {
return java.util.Date.class.isAssignableFrom(clazz);
}
@Override
public void marshal(Object source, HierarchicalStreamWriter writer, MarshallingContext context) {
java.util.Date date = (Date) source;
DateFormat formatter = new SimpleDateFormat(format);
writer.setValue(formatter.format(date));
}
@Override
public Object unmarshal(HierarchicalStreamReader reader,
UnmarshallingContext context) {
java.util.Date date = new Date();
DateFormat formatter = new SimpleDateFormat(format);
try {
date = formatter.parse(reader.getValue());
} catch (ParseException e) {
throw new ConversionException(e.getMessage(), e);
}
return date;
}
}
调用
package cn.pinnsvin;
import java.io.File;
import java.util.Date;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;
import cn.pinnsvin.xml.utils.XStreamUtils;
import cn.pinnsvin.xml.vo.FileVo;
import cn.pinnsvin.xml.vo.FolderVo;
import cn.pinnsvin.xml.vo.MyDate;
public class Main {
public static void main(String[] args) throws ParseException {
getS();
}
public static void getS() throws ParseException{
FolderVo folder = new FolderVo();
FileVo file = new FileVo();
FileVo file1 = new FileVo();
List<FileVo> files = new ArrayList();
file.setAuthority("读写");
file.setContent("XStream可以用来转换对象-XML，或者XML-对象。");
file.setTitle("xml解析");
file.setCreateDate(new SimpleDateFormat("yyyyMMdd").parse("20161125"));
file1.setAuthority("读");
file1.setContent("XStream可以用来转换对象-XML，或者XML-对象。");
file1.setTitle("xml解析之XStream");
files.add(file);
files.add(file1);
folder.setFiles(files);
folder.setAuthority("读写");
folder.setOwner("Pinnsvin");
folder.setCreateDate(new Date());
XStreamUtils streamUtils = new XStreamUtils();
System.out.println(streamUtils.objectToXML(folder));
FolderVo fd = (FolderVo)streamUtils.xmlToObject(new File("D:\\2.xml"));
System.out.println(fd.toString());
List<FileVo> fl = fd.getFiles();
// System.out.println(fl.toString());
}
}
输出
<Folder>
<files>
<File>
<createDate>20161125</createDate>
<authority>读写</authority>
<title>xml解析</title>
<content>XStream可以用来转换对象-XML，或者XML-对象。</content>
</File>
<File>
<authority>读</authority>
<title>xml解析之XStream</title>
<content>XStream可以用来转换对象-XML，或者XML-对象。</content>
</File>
</files>
<owner>Pinnsvin</owner>
<createDate>20171028</createDate>
<authority>读写</authority>
</Folder>
FolderVo [files=[FileVo [owner=null, createDate=Fri Nov 25 00:00:00 GMT+08:00 2016, lastUpdateDate=null, authority=读写, size=null, title=xml解析, content=XStream可以用来转换对象-XML，或者XML-对象。], FileVo [owner=null, createDate=null, lastUpdateDate=null, authority=读, size=null, title=xml解析之XStream, content=XStream可以用来转换对象-XML，或者XML-对象。]], folders=null, owner=Pinnsvin, createDate=Sat Oct 28 00:00:00 GMT+08:00 2017, lastUpdateDate=null, authority=读写, allSize=null, usedSize=null]