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使用Dmo4j解析xml总结，
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dom4j是用的比较多的解析xml的插件，使用起来也是比较简单灵活的。dom4j需要的jar包，仅仅需要dom4j.jar。本例中用的1.6.1的版本，下载地址：http://download.csdn.net/detail/qq_33556185/9601807
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已知xml结构如下：
<?xml version="1.0" encoding="UTF-8"?>
<Level>
<level1 id="level1">
<grade>1</grade>
<expnumber>10</expnumber>
<expname>V1</expname>
</level1>
<level2 id="level2">
<grade>2</grade>
<expnumber>20</expnumber>
<expname>V2</expname>
</level2>
<level3 id="level3">
<grade>3</grade>
<expnumber>30</expnumber>
<expname>V3</expname>
</level3>
<level4 id="level4">
<grade>4</grade>
<expnumber>40</expnumber>
<expname>V4</expname>
</level4>
<level5 id="level5">
<grade>5</grade>
<expnumber>50</expnumber>
<expname>V5</expname>
</level5>
<level6 id="level6">
<grade>6</grade>
<expnumber>60</expnumber>
<expname>V6</expname>
</level6>
<level7 id="level7">
<grade>7</grade>
<expnumber>70</expnumber>
<expname>V7</expname>
</level7>
<level8 id="level8">
<grade>8</grade>
<expnumber>80</expnumber>
<expname>V8</expname>
</level8>
<level9 id="level9">
<grade>9</grade>
<expnumber>90</expnumber>
<expname>V9</expname>
</level9>
<level10 id="level10">
<grade>10</grade>
<expnumber>100</expnumber>
<expname>V10</expname>
</level10>
<level11 id="level11">
<grade>11</grade>
<expnumber>120</expnumber>
<expname>V11</expname>
</level11>
<level12 id="level12">
<grade>12</grade>
<expnumber>140</expnumber>
<expname>V12</expname>
</level12>
<level13 id="level13">
<grade>13</grade>
<expnumber>160</expnumber>
<expname>V13</expname>
</level13>
<level14 id="level14">
<grade>14</grade>
<expnumber>180</expnumber>
<expname>V14</expname>
</level14>
<level15 id="level15">
<grade>15</grade>
<expnumber>200</expnumber>
<expname>V15</expname>
</level15>
<level16 id="level16">
<grade>16</grade>
<expnumber>220</expnumber>
<expname>V16</expname>
</level16>
<level17 id="level17">
<grade>17</grade>
<expnumber>240</expnumber>
<expname>V17</expname>
</level17>
<level18 id="level18">
<grade>18</grade>
<expnumber>260</expnumber>
<expname>V18</expname>
</level18>
<level19 id="level19">
<grade>19</grade>
<expnumber>300</expnumber>
<expname>V19</expname>
</level19>
<level20 id="level20">
<grade>20</grade>
<expnumber>340</expnumber>
<expname>V20</expname>
</level20>
<level21 id="level21">
<grade>21</grade>
<expnumber>380</expnumber>
<expname>V21</expname>
</level21>
<level22 id="level22">
<grade>22</grade>
<expnumber>420</expnumber>
<expname>V22</expname>
</level22>
<level23 id="level23">
<grade>23</grade>
<expnumber>460</expnumber>
<expname>V23</expname>
</level23>
<level24 id="level24">
<grade>24</grade>
<expnumber>500</expnumber>
<expname>V24</expname>
</level24>
<level25 id="level25">
<grade>25</grade>
<expnumber>600</expnumber>
<expname>V25</expname>
</level25>
<level26 id="level26">
<grade>26</grade>
<expnumber>700</expnumber>
<expname>V26</expname>
</level26>
<level27 id="level27">
<grade>27</grade>
<expnumber>800</expnumber>
<expname>V27</expname>
</level27>
<level28 id="level28">
<grade>28</grade>
<expnumber>900</expnumber>
<expname>V28</expname>
</level28>
<level29 id="level29">
<grade>29</grade>
<expnumber>1400</expnumber>
<expname>V29</expname>
</level29>
<level30 id="level30">
<grade>30</grade>
<expnumber>1900</expnumber>
<expname>V30</expname>
</level30>
<level31 id="level31">
<grade>31</grade>
<expnumber>3000</expnumber>
<expname>V31</expname>
</level31>
<level32 id="level32">
<grade>32</grade>
<expnumber>5000</expnumber>
<expname>V32</expname>
</level32>
<level33 id="level33">
<grade>33</grade>
<expnumber>10000</expnumber>
<expname>V33</expname>
</level33>
</Level>
解析代码如下：
package com.mvc;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.junit.Test;
import com.core.BaseJunitTest;
import com.mvc.vo.LevelVo;
public class Dom4jTest extends BaseJunitTest{
private List<LevelVo> levelList=new ArrayList<LevelVo>();
@Test
public void test() throws Exception {
// 创建saxReader对象
SAXReader reader = new SAXReader();
// 通过read方法读取一个文件 转换成Document对象
Document document = reader.read(new File("resource/level.xml"));
//获取根节点元素对象
Element root = document.getRootElement();
List<Element> childElements = root.elements();
System.out.println("childElements的节点数是============="+childElements.size());
List<LevelVo> levelList=new ArrayList<LevelVo>();
//已知属性名情况下
for (Element child : childElements) {
System.out.println("id: " + child.attributeValue("id"));
List<Element> grandSonElements = child.elements();
LevelVo levelVo=new LevelVo();
for (Element grandSon : grandSonElements) {
if(grandSon.getQualifiedName().equals("grade")){
levelVo.setGrade(grandSon.getData().toString());
}
if(grandSon.getQualifiedName().equals("expnumber")){
levelVo.setExpnumber(Long.parseLong(grandSon.getData().toString()));
}
if(grandSon.getQualifiedName().equals("expname")){
levelVo.setExpname(grandSon.getData().toString());
}
}
levelList.add(levelVo);
}
}
public List<LevelVo> getLevelList() {
return levelList;
}
public void setLevelList(List<LevelVo> levelList) {
this.levelList = levelList;
}
}
