Java系列：读取XML文件

• 导入jar包
  下载jdom-2.0.6.zip并导入jdom-2.0.6.jar
• xml源文件

<?xml version="1.0" encoding="utf-8"?>
<Root>
  <AlarmList Type="1" Key="0101" Description="瓦斯超限，赶快撤离1"></AlarmList>
  <AlarmList Type="1" Key="0102" Description="瓦斯超限，赶快撤离2"></AlarmList>
  <AlarmList Type="1" Key="0103" Description="瓦斯超限，赶快撤离3"></AlarmList>
</Root>

• 代码实例

package json;

import java.io.*;
import java.util.List;
import org.jdom2.*;
import org.jdom2.input.SAXBuilder;
import org.json.JSONObject;

public class ReadXML {
    public String[]  readXML() {
        String dataPath = "E:\\GDKJ\\word\\sensor\\xml\\ExecData20180327102411.xml";
        String[] str = new String[0];
        SAXBuilder builder = new SAXBuilder();
        try {
            JSONObject jsonObj = new JSONObject("{}");
            File file = new File(dataPath);
            if (file.isFile() && file.exists()) {
                InputStreamReader in = new InputStreamReader(new FileInputStream(file), "GBK");
                //通过saxBuilder的build方法，将输入流加载到saxBuilder中
                Document document = builder.build(in);
                //通过document对象获取xml文件的根节点
                Element rootElement = document.getRootElement();
                //获取根节点下的子节点的List集合
                List<Element> bookList = rootElement.getChildren();
                int i =0;
                str = new String[bookList.size()];
                for (Element book : bookList) {
                    List<Attribute> attrBook = book.getAttributes();
                    // 解析AlarmList的属性集合
                    for (Attribute attr : attrBook) {
                        String attrName = attr.getName();
                        String attrValue = attr.getValue();
                        jsonObj.put(attrName,attrValue);
                    }
                    str[i] = String.valueOf(jsonObj);
                    i++;
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return str;
    }
}

• 输出结果