【Android 基础】 XStream 使用

android Xml 解析之 XStream 解析

android Xml 解析之 XStream 解析
XStream解析
下载路径

常用方法API

XStream 解析android项目 asset 文件夹 xml 文件
packageupdatexml

Java 实体类

实现代码

运行结果

XStream解析

XStream 是一个开源项目，一套简单实用的类库，用于序列化对象与 XML 对象之间的相互转换,将 XML 文件内容解析为一个对象或将一个对象序列化为 XML 文件.

1. 下载路径

http://x-stream.github.io/download.html

2. 常用方法API

（1）fromXML()方法，返回值是Object

xStream.fromXML( File file) ;

xStream.fromXML( InputStream in) ;

xStream.fromXML( Reader reader ) ;

xStream.fromXML( String xml ) ;

xStream.fromXML( URL url ) ;

xStream.fromXML( File file , Object root ) ;

xStream.fromXML( InputStream in , Object root ) ;

xStream.fromXML( Reader reader , Object root ) ;

xStream.fromXML( String xml , Object root ) ;

xStream.fromXML( URL url , Object root ) ;

（2）toXML()方法

xStream.toXML( Object object ) ;   //返回值String

xStream.toXML( Object object , OutputStream out ); //返回值void

xStream.toXML( Object object , Writer writer );  //返回值void

（3）设置别名

根节点设置别名：参数一：别名 ； 参数二：当前的类名

xstream.alias( “blog” , Product.class ) ;

XStream 解析android项目 asset 文件夹 xml 文件

1. packageupdate.xml

<?xml version="1.0" encoding="utf-8"?>

<result>
<version>1.0</version>
<upgradeMode>1</upgradeMode>
<packages>
<versionName>1.00.01</versionName>
<url> <![CDATA[http://www.baidu.com]]></url>
<level>1</level>
<size>5550672</size>
<md5>A48F51DB26DE9EA8492AC5031647E8A2</md5>
<time>2016-06-27</time>
<desc> <![CDATA[ 1、修正了有线连接显示问题 ]]> </desc>
</packages>
</result>

2. Java 实体类

Result.java

package com.sky.xsteamtoparserxml;

/**
* Created by JerryLiu on 2016/7/19.
*/
public class Result {

private String version;
private int upgradeMode;
private Packages packages;

public int getUpgradeMode() {
return upgradeMode;
}

public void setUpgradeMode(int upgradeMode) {
this.upgradeMode = upgradeMode;
}

public String getVersion() {
return version;
}

public void setVersion(String version) {
this.version = version;
}

public Packages getPackages() {
return packages;
}

public void setPackages(Packages packages) {
this.packages = packages;
}
}

package.java

package com.sky.xsteamtoparserxml;

/**
* Created by JerryLiu on 2016/7/19.
*/
public class Packages {
private String versionName;
private String url;
private int level;
private int size;
private String md5;
private String time;
private String desc;

public String getVersionName() {
return versionName;
}

public void setVersionName(String versionName) {
this.versionName = versionName;
}

public String getUrl() {
return url;
}

public void setUrl(String url) {
this.url = url;
}

public int getLevel() {
return level;
}

public void setLevel(int level) {
this.level = level;
}

public int getSize() {
return size;
}

public void setSize(int size) {
this.size = size;
}

public String getMd5() {
return md5;
}

public void setMd5(String md5) {
this.md5 = md5;
}

public String getTime() {
return time;
}

public void setTime(String time) {
this.time = time;
}

public String getDesc() {
return desc;
}

public void setDesc(String desc) {
this.desc = desc;
}
}

3. 实现代码

public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

String fileName = "packageupdate.xml";
InputStream in = null;
try {
in = getResources().getAssets().open(fileName);
XStream xStream = new XStream();
xStream.alias("result", Result.class);
Result result = (Result) xStream.fromXML(in);
LogUtils.d("version = " + result.getVersion() + "\nupgradeMode = " + result.getUpgradeMode());
LogUtils.d(result.getPackages());
} catch (IOException e) {
e.printStackTrace();
}
}
}

4. 运行结果

D/LogUtils-/MainActivity.onCreate(MainActivity.java:30): version = 1.0；
upgradeMode = 1；
Packages {desc = "  1、修正了有线连接显示问题  ",
versionName = "1.00.01",
md5 = "A48F51DB26DE9EA8492AC5031647E8A2",
url = " http://www.baidu.com", time = "2016-06-27",
size = 5550672,
level = 1}