XStream


1.引入需要的jar包，在pom.xml中配置依赖

Java代码  

1. <dependency>  
2.     <groupId>com.thoughtworks.xstream</groupId>  
3.     <artifactId>xstream</artifactId>  
4.     <version>1.4.2</version>  
5. </dependency>  

<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

Java代码  

1. package com.ajita.xstream;  
2.   
3. import com.thoughtworks.xstream.annotations.XStreamAlias;  
4. import com.thoughtworks.xstream.annotations.XStreamAsAttribute;  
5.   
6. @XStreamAlias("DiskInfo")  
7. public class DiskInfo {  
8.     @XStreamAsAttribute  
9.     @XStreamAlias("diskName")  
10.     private String name;  
11.     private int totalSize;  
12.     private int avilableSize;  
13.     private int usedSize;  
14.   
15.     public String getName() {  
16.         return name;  
17.     }  
18.   
19.     public void setName(String name) {  
20.         this.name = name;  
21.     }  
22.   
23.     public int getTotleSize() {  
24.         return totalSize;  
25.     }  
26.   
27.     public void setTotleSize(int totleSize) {  
28.         this.totalSize = totleSize;  
29.     }  
30.   
31.     public int getAvilableSize() {  
32.         return avilableSize;  
33.     }  
34.   
35.     public void setAvilableSize(int avilableSize) {  
36.         this.avilableSize = avilableSize;  
37.     }  
38.   
39.     public int getUserSize() {  
40.         return usedSize;  
41.     }  
42.   
43.     public void setUserSize(int userSize) {  
44.         this.usedSize = userSize;  
45.     }  
46.   
47.     public String toString() {  
48.         StringBuilder sb = new StringBuilder();  
49.         sb.append(name + "\r\n");  
50.         sb.append("TotalSize:" + totalSize + "|Used Size:" + usedSize  
51.                 + "|Available Size:" + avilableSize);  
52.         return sb.toString();  
53.     }  
54. }  
55.   
56. package com.ajita.xstream;  
57.   
58. import java.util.List;  
59.   
60. import com.thoughtworks.xstream.annotations.XStreamAlias;  
61.   
62. @XStreamAlias("HardwareInfo")  
63. public class HardwareInfo {  
64.     private String cpuInfo;  
65.     private String networkInfo;  
66.     private List<DiskInfo> diskInfos;  
67.   
68.     public String getCpuInfo() {  
69.         return cpuInfo;  
70.     }  
71.   
72.     public void setCpuInfo(String cpuInfo) {  
73.         this.cpuInfo = cpuInfo;  
74.     }  
75.   
76.     public String getNetworkInfo() {  
77.         return networkInfo;  
78.     }  
79.   
80.     public void setNetworkInfo(String networkInfo) {  
81.         this.networkInfo = networkInfo;  
82.     }  
83.   
84.     public List<DiskInfo> getDiskInfos() {  
85.         return diskInfos;  
86.     }  
87.   
88.     public void setDiskInfos(List<DiskInfo> diskInfos) {  
89.         this.diskInfos = diskInfos;  
90.     }  
91.   
92.     public String toString() {  
93.         StringBuilder sb = new StringBuilder();  
94.         sb.append(cpuInfo);  
95.         sb.append("\r\n");  
96.         sb.append(networkInfo);  
97.         sb.append("\r\n");  
98.         for (DiskInfo disk : diskInfos) {  
99.             sb.append(disk.toString());  
100.             sb.append("\r\n");  
101.         }  
102.         return sb.toString();  
103.     }  
104. }  

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 + "\r\n");
		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("\r\n");
		sb.append(networkInfo);
		sb.append("\r\n");
		for (DiskInfo disk : diskInfos) {
			sb.append(disk.toString());
			sb.append("\r\n");
		}
		return sb.toString();
	}
}

3.新建测试代码

Java代码  

1. package com.ajita.xstream;  
2.   
3. import java.util.ArrayList;  
4.   
5. import com.thoughtworks.xstream.XStream;  
6.   
7. public class TestXStream {  
8.     /** 
9.      * @param args 
10.      */  
11.     public static void main(String[] args) {  
12.         DiskInfo disk1 = new DiskInfo();  
13.         disk1.setName("D:\\");  
14.         disk1.setTotleSize(100);  
15.         disk1.setUserSize(20);  
16.         disk1.setAvilableSize(80);  
17.         DiskInfo disk2 = new DiskInfo();  
18.         disk2.setName("E:\\");  
19.         disk2.setTotleSize(200);  
20.         disk2.setUserSize(40);  
21.         disk2.setAvilableSize(160);  
22.   
23.         ArrayList<DiskInfo> diskInfos = new ArrayList<DiskInfo>();  
24.         diskInfos.add(disk1);  
25.         diskInfos.add(disk2);  
26.   
27.         HardwareInfo hwInfo = new HardwareInfo();  
28.         hwInfo.setCpuInfo("cpu info is ...");  
29.         hwInfo.setNetworkInfo("network info is ...");  
30.         hwInfo.setDiskInfos(diskInfos);  
31.   
32.         XStream xStream = new XStream();  
33.         xStream.autodetectAnnotations(true);  
34.         String xml = xStream.toXML(hwInfo);  
35.         System.out.println(xml);  
36.   
37.         HardwareInfo info2 = (HardwareInfo) xStream.fromXML(xml);  
38.         System.out.println(info2);  
39.     }  
40.   
41. }  

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：

Java代码  

1. <HardwareInfo>  
2.   <cpuInfo>cpu info is ...</cpuInfo>  
3.   <networkInfo>network info is ...</networkInfo>  
4.   <diskInfos>  
5.     <DiskInfo diskName="D:\">  
6.       <totalSize>100</totalSize>  
7.       <avilableSize>80</avilableSize>  
8.       <usedSize>20</usedSize>  
9.     </DiskInfo>  
10.     <DiskInfo diskName="E:\">  
11.       <totalSize>200</totalSize>  
12.       <avilableSize>160</avilableSize>  
13.       <usedSize>40</usedSize>  
14.     </DiskInfo>  
15.   </diskInfos>  
16. </HardwareInfo>  
17. cpu info is ...  
18. network info is ...  
19. D:\  
20. TotalSize:100|Used Size:20|Available Size:80  
21. E:\  
22. TotalSize:200|Used Size:40|Available Size:160  

<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();