<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<bookstore>
<book category="COOKING">
<title lang="en">Giada De Laurentiis</title>
<author>Lee</author>
<year>2005</year>
<price>30.00</price>
</book>
<book category="WEB">
<title lang="en">JQuery</title>
<author>Lee</author>
<author>Sun</author>
<author>James</author>
<year>2015</year>
<price>30.00</price>
</book>
</bookstore>
1 package com.slp.stax;
2
3 import org.junit.Test;
4
5 import javax.xml.stream.*;
6 import javax.xml.stream.events.XMLEvent;
7 import java.io.IOException;
8 import java.io.InputStream;
9
10 /**
11 * Created by sanglp on 2017/2/26.
12 */
13 public class TestStax {
14
15 /**
16 * Bookstore
17
18 book
19
20 title
21 Giada De Laurentiis
22 /title
23
24 author
25 Lee
26 /author
27
28 year
29 2005
30 /year
31
32 price
33 30.00
34 /price
35
36 /book
37
38 book
39
40 title
41 JQuery
42 /title
43
44 author
45 Lee
46 /author
47
48 author
49 Sun
50 /author
51
52 author
53 James
54 /author
55
56 year
57 2015
58 /year
59
60 price
61 30.00
62 /price
63
64 /book
65
66 /bookstore
67
68 */
69 @Test
70 public void test01(){
71 XMLInputFactory factory = XMLInputFactory.newInstance();
72 InputStream is = null;
73 try {
74 is = TestStax.class.getClassLoader().getResourceAsStream("books.xml");
75 XMLStreamReader reader = factory.createXMLStreamReader(is);
76 while (reader.hasNext()){
77 int type = reader.next();
78 //判断节点类型
79 if(type== XMLStreamConstants.START_ELEMENT){
80 System.out.println(reader.getName());
81 }else if(type==XMLStreamConstants.CHARACTERS){
82 System.out.println(reader.getText().trim());
83 }else if(type==XMLStreamConstants.END_ELEMENT){
84 System.out.println("/"+reader.getName());
85 }
86 // System.out.println(reader.next());
87 }
88 } catch (XMLStreamException e) {
89 e.printStackTrace();
90 }finally {
91 if(is!=null){
92 try {
93 is.close();
94 } catch (IOException e) {
95 e.printStackTrace();
96 }
97 }
98 }
99 }
100
101
102 @Test
103 public void test02(){
104 XMLInputFactory factory = XMLInputFactory.newInstance();
105 InputStream is = null;
106 try {
107 is = TestStax.class.getClassLoader().getResourceAsStream("books.xml");
108 XMLStreamReader reader = factory.createXMLStreamReader(is);
109 while (reader.hasNext()){
110 int type = reader.next();
111 if(type== XMLStreamConstants.START_ELEMENT){
112 String name = reader.getName().toString();
113 if(name.equals("book")){
114 System.out.println(reader.getAttributeName(0)+":"+reader.getAttributeValue(0));
115 }
116 }
117 }
118 } catch (XMLStreamException e) {
119 e.printStackTrace();
120 }finally {
121 if(is!=null){
122 try {
123 is.close();
124 } catch (IOException e) {
125 e.printStackTrace();
126 }
127 }
128 }
129 }
130
131
132 /**
133 * Giada De Laurentiis:30.00
134 JQuery:30.00
135 */
136 @Test
137 public void test03(){
138 XMLInputFactory factory = XMLInputFactory.newInstance();
139 InputStream is = null;
140 try {
141 is = TestStax.class.getClassLoader().getResourceAsStream("books.xml");
142 XMLStreamReader reader = factory.createXMLStreamReader(is);
143 while (reader.hasNext()){
144 int type = reader.next();
145 if(type== XMLStreamConstants.START_ELEMENT){
146 String name = reader.getName().toString();
147 if(name.equals("title")){
148 System.out.print(reader.getElementText()+":");
149 }
150 if(name.equals("price")){
151 System.out.print(reader.getElementText()+"\n");
152 }
153 }
154 }
155 } catch (XMLStreamException e) {
156 e.printStackTrace();
157 }finally {
158 if(is!=null){
159 try {
160 is.close();
161 } catch (IOException e) {
162 e.printStackTrace();
163 }
164 }
165 }
166 }
167
168
169 /**
170 * Giada De Laurentiis:30.00
171 * JQuery:30.00
172 */
173 @Test
174 public void test04(){
175 XMLInputFactory factory = XMLInputFactory.newInstance();
176 InputStream is = null;
177 try {
178 is = TestStax.class.getClassLoader().getResourceAsStream("books.xml");
179 //基于迭代模型的操作方式
180 XMLEventReader reader = factory.createXMLEventReader(is);
181 while (reader.hasNext()){
182 //通过XMLEvent来获取是否是某种节点类型
183 XMLEvent event = reader.nextEvent();
184 if(event.isStartElement()){
185 //通过event.asxxx()转换节点
186 String name = event.asStartElement().getName().toString();
187 if(name.equals("title")){
188 System.out.print(reader.getElementText()+":");
189 }
190 if(name.equals("price")){
191 System.out.print(reader.getElementText()+"\n");
192 }
193 }
194 }
195 } catch (XMLStreamException e) {
196 e.printStackTrace();
197 }finally {
198 if(is!=null){
199 try {
200 is.close();
201 } catch (IOException e) {
202 e.printStackTrace();
203 }
204 }
205 }
206 }
207
208 /**
209 * Giada De Laurentiis:30.00
210 * JQuery:30.00
211 */
212 @Test
213 public void test05(){
214 XMLInputFactory factory = XMLInputFactory.newInstance();
215 InputStream is = null;
216 try {
217 is = TestStax.class.getClassLoader().getResourceAsStream("books.xml");
218 //基于Filter的过滤方式 可以有效的过滤不用进行操作的节点，效率会高一些
219 XMLEventReader reader = factory.createFilteredReader(factory.createXMLEventReader(is),new EventFilter(){
220 public boolean accept(XMLEvent event){
221 //放true表示会显示，返回false表示不显示
222 if(event.isStartElement())
223 return true;
224 return false;
225 }
226 });
227 int num =0;
228 while (reader.hasNext()){
229 //通过XMLEvent来获取是否是某种节点类型
230 XMLEvent event = reader.nextEvent();
231 if(event.isStartElement()){
232 //通过event.asxxx()转换节点
233 String name = event.asStartElement().getName().toString();
234 if(name.equals("title")){
235 System.out.print(reader.getElementText()+":");
236 }
237 if(name.equals("price")){
238 System.out.print(reader.getElementText()+"\n");
239 }
240 }
241 num++;
242 }
243 } catch (XMLStreamException e) {
244 e.printStackTrace();
245 }finally {
246 if(is!=null){
247 try {
248 is.close();
249 } catch (IOException e) {
250 e.printStackTrace();
251 }
252 }
253 }
254 }
255 }
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