Java 将 XML 拆分为单独的字符串

Question

我想将XML文件拆分为单独的XML。通过读取和标签。我已经使用 StringUtils.substringsBetween 拆分了 XML。但是，我只能从文件中拆分两个XML。第三个 XML 将附加第二个 XML。

程序：

import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.lang3.StringUtils;
public class SBuff {
    private BufferedReader br;
    public SBuff() {
        // TODO Auto-generated constructor stub
    }
    public static void main(String[] args) throws IOException {
         String data = "<?xml version="1.0"?>rn" + 
                "<company>rn" + 
                "    <staff>rn" + 
                "        <firstname>yong</firstname>rn" + 
                "        <lastname>mook kim</lastname>rn" + 
                "        <nickname>mkyong</nickname>rn" + 
                "        <salary>100000</salary>rn" + 
                "    </staff>rn" + 
                "    <staff>rn" + 
                "        <firstname>low</firstname>rn" + 
                "        <lastname>yin fong</lastname>rn" + 
                "        <nickname>fong fong</nickname>rn" + 
                "        <salary>200000</salary>rn" + 
                "    </staff>rn" + 
                "    <staff>rn" + 
                "        <firstname>low</firstname>rn" + 
                "        <lastname>yin fong</lastname>rn" + 
                "        <nickname>fong fong</nickname>rn" + 
                "        <salary>200000</salary>rn" + 
                "    </staff>rn" + 
                "</company>rn"+
                "</xml>";
        SBuff s = new SBuff();
        s.loadData(data);
    }
    public void loadData(String stream) throws IOException {
        String[] list = StringUtils.substringsBetween(stream,
                "<staff">", "</staff>");
        StringBuilder stringBuilder = new StringBuilder();
        for (String s : list) {
            stringBuilder.append("<staff>");
            stringBuilder.append(s);
            stringBuilder.append("</staff>");
            System.out.println("##################################");
            System.out.println(stringBuilder.toString());
            System.out.println("##################################");
        }
    }
    public void display(String data) {
        System.out.println("Buffer Data: " + data);
    }
}

输出：

Expected:
##################################
<staff> 
   <firstname>yong</firstname> 
   <lastname>mook kim</lastname>
   <nickname>mkyong</nickname> 
   <salary>100000</salary>
</staff>
##################################
<staff>
   <firstname>low</firstname> 
   <lastname>yin fong</lastname> 
   <nickname>fong fong</nickname> 
   <salary>200000</salary>
</staff>
##################################
<staff>
   <firstname>low</firstname> 
   <lastname>yin fong</lastname> 
   <nickname>fong fong</nickname> 
   <salary>200000</salary>
</staff>
##################################

Actual:
##################################
<staff> 
   <firstname>yong</firstname> 
   <lastname>mook kim</lastname>
   <nickname>mkyong</nickname> 
   <salary>100000</salary>
</staff>
##################################
<staff>
   <firstname>low</firstname> 
   <lastname>yin fong</lastname> 
   <nickname>fong fong</nickname> 
   <salary>200000</salary>
</staff><staff>
   <firstname>low</firstname> 
   <lastname>yin fong</lastname> 
   <nickname>fong fong</nickname> 
   <salary>200000</salary>
</staff>
##################################

我尝试了不同的方法。似乎没有一个锻炼。提前谢谢。

Answer 1

您可以使用像jsoup这样的XML解析器。

<dependency>
    <groupId>org.jsoup</groupId>
    <artifactId>jsoup</artifactId>
    <version>1.12.1</version>
</dependency>

解析和拆分：

 Document doc = Jsoup.parse(data, "", Parser.xmlParser());
 for(Element staffElement: doc.getElementsByTag("staff")) {
   System.out.println(staffElement);
   System.out.println("##################################");
 }

Answer 2

对于实际输出 - 您的 loadData 函数将是

public void loadData(String stream) throws IOException {
        String[] list = StringUtils.substringsBetween(stream, "<staff>", "</staff>");
        StringBuilder stringBuilder = null;
        System.out.println("##################################");
        for (String s : list) {
            stringBuilder=new StringBuilder();
            stringBuilder.append("<staff>");
            stringBuilder.append(s);
            stringBuilder.append("</staff>");
           // System.out.println("##################################");
            System.out.println(stringBuilder.toString());
            System.out.println("##################################");
        }
    }