1.xml文件生成,拼接字符串使用StringBuffer或StringBuilder
2.拼接好后写入文件即可,将多个实体类写入xml文件
3.这种方式比较简单,但是操作也比较麻烦
4.下面是我的代码:
@1测试代码,数据是模拟的productXmlFile是测试类
package operator.hui.xml; import java.io.File; import java.io.FileOutputStream; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.util.ArrayList; import java.util.Iterator; import java.util.List; /* * 生成xml文件的类 */ public class CreateXmlFile { public static void main(String[] args) { // TODO Auto-generated method stub List<Sms> lists = new ArrayList<Sms>(); for (int i = 0; i < 10; i++) { Sms s = new Sms(); s.setAddr("1870087098"+i); s.setContent("小明,你女朋友来了"); s.setDate("2000"+"-"+i+"-"+i+2+" "+"12:16:37"); lists.add(s); } productXmlFile("f://sms.xml",lists); test(); } private static void test() { // TODO Auto-generated method stub System.out.println(CreateXmlFile.class.getSimpleName()); } /* * 生成名为name的根节点为root的xml文件,这个文件存储lists这个集合的数据,path为文件路径 * */ public static void productXmlFile(String path,List<Sms> lists){ StringBuffer bf = new StringBuffer(); //组拼xml文件头 bf.append("<?xml version="1.0" encoding="UTF-8"?>"); bf.append(" "); //组拼根节点 bf.append("<smss>"); bf.append(" "); for (Iterator iterator = lists.iterator(); iterator.hasNext();) { Sms sms = (Sms) iterator.next(); System.out.println(sms.getAddr()); sms.productPoint(bf); } bf.append(" "); bf.append("</smss>"); File f = new File(path); try { FileOutputStream fos = new FileOutputStream(f); fos.write(bf.toString().getBytes("utf8")); fos.flush(); fos.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }
@2javabean类Sms,实现了生成节点的接口
package operator.hui.xml; import java.util.Date; /** * 短信数据封装类 * @author Administrator * */ public class Sms implements ProductRuler{ //短信来源 private String addr; //短信内容 private String content; //短息日期 private String date; public Sms() { // TODO Auto-generated constructor stub } public String getAddr() { return addr; } public void setAddr(String addr) { this.addr = addr; } public String getContent() { return content; } public void setContent(String content) { this.content = content; } public String getDate() { return date; } public void setDate(String date) { this.date = date; } @Override public void productPoint(StringBuffer sb) { sb.append(" "); sb.append("<"+this.getClass().getSimpleName()+">"); sb.append(" "); sb.append(" "); sb.append("<addr>"); sb.append(this.addr); sb.append("</addr>"); sb.append(" "); sb.append(" "); sb.append("<content>"); sb.append(this.content); sb.append("</content>"); sb.append(" "); sb.append(" "); sb.append("<date>"); sb.append(this.date); sb.append("</date>"); sb.append(" "); sb.append(" "); sb.append("</"+this.getClass().getSimpleName()+">"); sb.append(" "); } }
@3生成节点的接口,只有一个方法,
package operator.hui.xml; /* * 具体的xml内部节点生成规则 */ public interface ProductRuler { /*在sb中生成节点*/ void productPoint(StringBuffer sb); }
@4运行结果:
Console控制台
生成的xml文件
生成的 文件内容:
<?xml version="1.0" encoding="UTF-8"?> <smss> <Sms> <addr>18700870980</addr> <content>小明,你女朋友来了</content> <date>2000-0-010 12:16:37</date> </Sms> <Sms> <addr>18700870981</addr> <content>小明,你女朋友来了</content> <date>2000-1-110 12:16:37</date> </Sms> <Sms> <addr>18700870982</addr> <content>小明,你女朋友来了</content> <date>2000-2-210 12:16:37</date> </Sms> <Sms> <addr>18700870983</addr> <content>小明,你女朋友来了</content> <date>2000-3-310 12:16:37</date> </Sms> <Sms> <addr>18700870984</addr> <content>小明,你女朋友来了</content> <date>2000-4-410 12:16:37</date> </Sms> <Sms> <addr>18700870985</addr> <content>小明,你女朋友来了</content> <date>2000-5-510 12:16:37</date> </Sms> <Sms> <addr>18700870986</addr> <content>小明,你女朋友来了</content> <date>2000-6-610 12:16:37</date> </Sms> <Sms> <addr>18700870987</addr> <content>小明,你女朋友来了</content> <date>2000-7-710 12:16:37</date> </Sms> <Sms> <addr>18700870988</addr> <content>小明,你女朋友来了</content> <date>2000-8-810 12:16:37</date> </Sms> <Sms> <addr>18700870989</addr> <content>小明,你女朋友来了</content> <date>2000-9-910 12:16:37</date> </Sms> </smss>