Axiom
,也就是Axis Object Model
Axis2用Axiom处理soap文档和soap信息。
- Lightweight（轻量），更少的内存需要。
- Deferred building（延迟构建）
- Pull based（pull模式），OM基于StAX－－标准的pull parser API。
Axiom采用pull解析方式，基于StAX（JSR173）。
SAX和DOM 都是基于push的解析方式，也就是说解析控制在parser本身。
Axiom和StAX紧密相关，
要使用Axiom，StAX相关的jar包也必须在classpath下。
1.需要的包
| axiom-api-1.2.8.jar |
包含javax.xml.*的 包
JDK中就有javax.xml.*的包,但一定不要使用他们,所以一定要把AXIS2下的此包加入buildPath,如果不加入,系统也不报错,因为会从JDK中找到,但这样使用JDK的包就会在运行的时候出异常 |
2.范例test1.xml 文件(用于下面的读写)
<?xml version="1.0" encoding="UTF-8"?>
<fool>
<student>
<name>mac</name>
<id>12</id>
<age>33</age>
<sex>male</sex>
</student>
<student>
<name>silly</name>
<id>5</id>
<age>12</age>
<sex>female</sex>
</student>
<teacher>
<name>Mr. Jones</name>
<id>2</id>
<age>31</age>
<sex>male</sex>
</teacher>
<student>
<name>macy</name>
<id>2</id>
<age>40</age>
<sex>female</sex>
</student>
<student>
<name>tom</name>
<id>32</id>
<age>31</age>
<sex>male</sex>
</student>
<message>hello world</message>
</fool>
|
3.简单读-----直接匹配name去读
// 首先对具体的xml文件构建parser
FileInputStream xmlFile = new FileInputStream("test1.xml");
XMLStreamReader parser = XMLInputFactory.newInstance().createXMLStreamReader(xmlFile);
// 还需要StAXOMBuilder对象
StAXOMBuilder builder = new StAXOMBuilder(parser);
OMElement doc = builder.getDocumentElement(); // 读到<fool></fool>
OMElement cre = doc.getFirstChildWithName(new QName("student")); //读到<student>
OMElement cre1 = cre.getFirstChildWithName(new QName("id")); // 读到<id></id>
System.out.println(cre1.getLocalName()+":"+cre1.getText());
cre1 = cre.getFirstChildWithName(new QName("name")); // 读到<name></name>
System.out.println(cre1.getLocalName()+":"+cre1.getText());
cre1 = cre.getFirstChildWithName(new QName("age")); // 读到<age></age>
System.out.println(cre1.getLocalName()+":"+cre1.getText());
cre1 = cre.getFirstChildWithName(new QName("sex")); // 读到<sex></sex>
System.out.println(cre1.getLocalName()+":"+cre1.getText());
|
结果:
id:12
name:mac
age:33
sex:male |
4.复杂读-----getChild
FileInputStream xmlFile = new FileInputStream("test1.xml");
XMLStreamReader parser = XMLInputFactory.newInstance().createXMLStreamReader(xmlFile);
StAXOMBuilder builder = new StAXOMBuilder(parser);
OMElement doc = builder.getDocumentElement();
Iterator<OMElement> iter = doc.getChildElements();
while(iter.hasNext()){
OMElement temp = iter.next();
System.out.println("====================");
System.out.println(temp.getLocalName());
System.out.println(temp.getText());
if(temp.getLocalName().equals("student")){
Iterator<OMElement> iter1 = temp.getChildElements();
System.out.println("----------------");
while(iter1.hasNext()){
OMElement temp1 = iter1.next();
System.out.println(temp1.getLocalName()+":"+temp1.getText());
}
}
}
|
结果:
====================
student
----------------
name:mac
id:12
age:33
sex:male
====================
student
----------------
name:silly
id:5
age:12
sex:female
====================
teacher
====================
student
----------------
name:macy
id:2
age:40
sex:female
====================
student
----------------
name:tom
id:32
age:31
sex:male
====================
message
hello world
|
简单方式(基本方式,无ns,无attribute)
1.建立节点
// 通常通过OMFactory来构造XML文档中的element
OMFactory factory = OMAbstractFactory.getOMFactory();
//建立doc节点,doc节点会和下面的root节点合并
OMDocument doc = factory.createOMDocument();
//建立root节点
OMElement root = factory.createOMElement(new QName("root"));
//建立两个普通节点
OMElement stu = factory.createOMElement(new QName("student"));
stu.addChild(factory.createOMText("mac"));
OMElement tea = factory.createOMElement(new QName("teacher"));
tea.addChild(factory.createOMText("silly"));
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2.构建树
//构建树,将两个普通节点连到root节点上
root.addChild(stu);
root.addChild(tea);
//构建树,将root节点连到doc节点上
doc.addChild(root);
|
3. 写入文件
// 构建writer做输出器
XMLStreamWriter writer = XMLOutputFactory.newInstance().createXMLStreamWriter(
new FileOutputStream("2.xml"));
root.serialize(writer); // cache on
writer.flush();
|
4. 看结果
"2.xml"
<root><student>mac</student><teacher>silly</teacher></root>
此文件缺陷:
1.没有xml页首的<?xml version="1.0" encoding="UTF-8"?>
2.没有回车换行 |
5.试着用AXIOM读
FileInputStream xmlFile = new FileInputStream("2.xml");
XMLStreamReader parser = XMLInputFactory.newInstance().createXMLStreamReader(xmlFile);
StAXOMBuilder builder = new StAXOMBuilder(parser);
OMElement doc = builder.getDocumentElement();
Iterator<OMElement> iter = doc.getChildElements();
while(iter.hasNext()){
OMElement temp = iter.next();
System.out.println("====================");
System.out.println(temp.getLocalName()+":"+temp.getText());
}
结果:
====================
student:mac
====================
teacher:silly
|
Axiom写XML,复杂方式
1. 构建节点
// 通常通过OMFactory来构造XML文档中的element
OMFactory factory = OMAbstractFactory.getOMFactory();
// 建立 namespace
OMNamespace ns = factory.createOMNamespace("http://demo.axiom","x");
OMNamespace ns1 = factory.createOMNamespace("http://ot.demo.axiom","y");
//建立doc节点,doc节点会和下面的root节点合并
OMDocument doc = factory.createOMDocument();
//建立root节点
OMElement root = factory.createOMElement("root",ns);
//建立两个普通节点
OMElement stu = factory.createOMElement("student",ns1);
stu.addChild(factory.createOMText("mac"));
OMElement tea = factory.createOMElement("teacher","http://namespace","ns");
tea.addChild(factory.createOMText("silly"));
|
2.构建树
//构建树,将两个普通节点连到root节点上
root.addAttribute(factory.createOMAttribute("attr",ns,"hello world"));
root.addChild(stu);
root.addChild(tea);
//构建树,将root节点连到doc节点上
doc.addChild(root);
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3. 输出到文件或打印到屏幕
// 构建writer做输出器
XMLStreamWriter writer = XMLOutputFactory.newInstance().createXMLStreamWriter(
new FileOutputStream("2.xml"));
root.serialize(writer); // cache on
writer.flush();
|
4.
生成xml如下:
<x:root xmlns:x="http://demo.axiom" x:attr="hello world"><y:student xmlns:y="http://ot.demo.axiom">mac</y:student><ns:teacher xmlns:ns="http://namespace">silly</ns:teacher></x:root>
|
| 5.试着用AXIOM读 FileInputStream xmlFile = new FileInputStream("2.xml"); XMLStreamReader parser = XMLInputFactory.newInstance().createXMLStreamReader(xmlFile); StAXOMBuilder builder = new StAXOMBuilder(parser); OMElement doc = builder.getDocumentElement(); Iterator<OMElement> iter = doc.getChildElements(); while(iter.hasNext()){ OMElement temp = iter.next(); System.out.println("===================="); System.out.println(temp.getLocalName()+":"+temp.getText()); } 结果: ==================== student:mac ==================== teacher:silly |
（编辑：李大同）
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