xml 博客分类： Java SE XMLIEjunitSQLApache

程序员文章站 2024-02-14 19:24:16

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package com.test;

import java.io.File;
import java.io.FileWriter;
import java.util.Iterator;
import java.util.List;

import org.dom4j.Attribute;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;

public class Test {

/**
* @param args
*/
public static void main(String[] args) throws Exception {
  // TODO Auto-generated method stub
  String fileName = "E:\\persons.xml";
  newFile(fileName);
  readerAndEdit(fileName);
}
//新建一个文档
public static void newFile(String fileName){
  Document doc = DocumentHelper.createDocument();
  Element persons = doc.addElement("persons");
  persons.addComment("这是xml的注释");
  Element person1 = persons.addElement("person");
  person1.addAttribute("sex", "男");

  Element name1 = person1.addElement("name");
  name1.setText("张三");
  Element age1 =person1.addElement("age");
  age1.setText("22");

  try{
   OutputFormat fmt = OutputFormat.createPrettyPrint();//IE :   可以不加
   fmt.setEncoding("GBK");        //支持中文 : 可以不加
   XMLWriter writer = new XMLWriter(new FileWriter(new File(fileName)),fmt); //或者 : new XMLWriter(new FileWriter(new File(fileName)))
   writer.write(doc);
   writer.close();
  }catch(Exception ex){
   ex.printStackTrace();
  }
}
//读文档进行修改
public static void readerAndEdit(String fileName) throws Exception{
  SAXReader reader = new SAXReader();
  Document doc = reader.read(new File(fileName));
  List<Attribute> attList = doc.selectNodes("/persons/person/@sex ");
  //修改性别
  for(Attribute att : attList){
   if("男".equals(att.getValue())){
    att.setValue("女");
   }
  }
  List<Element> personList = doc.selectNodes("/persons/person");
  //添加元素
  for(Element person : personList){
   Element address = person.addElement("address");
   address.setText("北京");
  }
  //删除元素
  List<Element> list = doc.selectNodes("/persons/person");
  for(Element person : list){
   Iterator<Element> addList = person.elementIterator("address");
   while(addList.hasNext()){
    person.remove(addList.next());
   }
  }

  OutputFormat fmt = OutputFormat.createPrettyPrint();
  fmt.setEncoding("GBK");
  XMLWriter writer = new XMLWriter(new FileWriter(new File(fileName)),fmt);
  writer.write(doc);
  writer.close();

}

}

-------------------------------------BaseRead 类

package cn.com.cncsi.product.ttms.common.distribute.parsexml;

import java.io.File;
import java.sql.Timestamp;
import java.util.HashMap;
import java.util.List;

import junit.framework.TestCase;

import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;

import com.sun.org.apache.bcel.internal.generic.GOTO;

/**
* 解析XML的基类
*
*/
public abstract class BaseRead {

/**
* 可以得到头部信息<Head>,以键值对的形式存储
*/
protected HashMap<String, String> headMP = new HashMap<String, String>();

/**
* 将List集合传成String时的分隔符
*/
protected String split = ";";

/**
* 根据文件名解析文件
* 例: C:\\web.xml
*/
protected Document testRead(String fileName){
  try{
   SAXReader reader = new SAXReader();
   Document doc = reader.read(new File(fileName));
   initHead(doc);
   return doc;
  }catch(Exception ex){
   System.out.println("读取文件初始化头部Head错误");
//   ex.printStackTrace();
  }
  return null;
}

/**
* 传入xml格式的字符串进行解析
* @param data
* @return
*/
protected Document readByString(String data){
  try{
   Document doc = DocumentHelper.parseText(data);
   initHead(doc);
   return doc;
  }catch(Exception ex){
   System.out.println("解析数据初始化头部Head错误");
//   ex.printStackTrace();
  }
  return null;
}

/**
* 初始化所有xml的头部信息,并存入HashMap属性中.
* @param doc
*/
private void initHead(Document doc){
  //读取head
  List<Element> headElementList = doc.selectNodes("/ServiceContext/Head/property");
  for(Element el : headElementList){
   headMP.put(el.attributeValue("name"),el.attributeValue("value"));
  }
}

/**
* 返回一个HashMap,用于保存xml文件的问信息(Head)
* @return
*/
public HashMap getHeadMP(){
  return headMP;
}

/**
* 传入节点.将节点的值转换成Double类型
*/
protected double toDouble(Element e){
  String temp = e.attributeValue("value");
  try{
   return Double.parseDouble(temp);
  }catch(Exception ex){
   System.out.println("转换Double类型出错");
//   ex.printStackTrace();
  }
  return 0;
}

/**
* 传入节点.将节点的值转换成Timestamp类型
*/
protected Timestamp toTime(Element e){
  String temp = e.attributeValue("value");
  try{
   return Timestamp.valueOf(temp);
  }catch(Exception ex){
   System.out.println("转换Timestamp类型出错");
//   ex.printStackTrace();

  }
  return Timestamp.valueOf("2008-08-08 12:12:12");
}

/**
* 传入节点.将节点的值转换成long类型
*/
protected long toLong(Element e){
  String temp = e.attributeValue("value");
  try{
   return Long.parseLong(temp);
  }catch(Exception ex){
   System.out.println("转换long类型出错");
//   ex.printStackTrace();
  }
  return 0;
}
/**
* 传入节点.将节点的值转换成int类型
*/
protected int toInt(Element e){
  String temp = e.attributeValue("value");
  try{
   return Integer.parseInt(temp);
  }catch(Exception ex){
   System.out.println("转换long类型出错");
//   ex.printStackTrace();
  }
  return 0;
}
/**
* 传入节点.将节点的值转换成String类型
*/
protected String toValue(Element e){
  return e.attributeValue("value");
}
/**
* 传入节点.得到节点的name属性的值
*/
protected String toName(Element e){
  return e.attributeValue("name");
}
}

-----------------解析XML的类 extends BaseRead

Document doc = readByString(data); //data:xml格式的字符串
Element tTCommonOpElement = (Element) doc.selectNodes("/ServiceContext/TTCommonOp").get(0);

        String nodeName;
        String nameValue;
        for(Element element : (List<Element>)tTCommonOpElement.elements()){
            nodeName = element.getName();
            nameValue = toName(element);
            if("TT_Code".equalsIgnoreCase(nameValue)){

            }else if("Operation".equalsIgnoreCase(nodeName)){
                List<Element> opElement = element.elements();
                String opNodeName ;
                String opNameValue ;
                for(Element el : opElement){
                    opNodeName = el.getName();
                    opNameValue = toName(el);
                    if("Operation_Id".equalsIgnoreCase(opNameValue)){

                    }else if("Operation_Name".equalsIgnoreCase(opNameValue)){

                    }else if("Operator".equalsIgnoreCase(opNodeName)){
                        List<Element> list = el.elements();
                        String orNameValue ;
                        for(Element e: list){
                            String eNameValue = e.attributeValue("name");

                            if("User_Id".equalsIgnoreCase(eNameValue)){

                            }else if("User_Name".equalsIgnoreCase(eNameValue)){

                            }else if("Zone_Code".equalsIgnoreCase(eNameValue)){

                            }
                        }

                    }else if("Operator_Dept".equalsIgnoreCase(opNodeName)){
                        List<Element> list = el.elements();
                        for(Element e : list){
                            String eNameValue = e.attributeValue("name");
                            if("Dept_Id".equalsIgnoreCase(eNameValue)){

                            }else if("Dept_Name".equalsIgnoreCase(eNameValue)){

                            }
                        }
                    }
                }
            }
        }

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