我在尝试实现这个目标时，已经到了我的极限。我需要使用Groovy创建一个转换器，将CSV转换为XML。
由于我的Groovy能力非常有限，因此下面的代码可能是垃圾堆，但它是通过其他我找到的代码段组合而成的。
package com.ns.extension.tee;
import com.ns.argo.business.api.ArgoUtils
import com.ns.argo.business.api.GroovyApi
import org.apache.log4j.Logger
import org.jdom.Document
import org.jdom.Element
import javax.xml.parsers.DocumentBuilder
import javax.xml.parsers.DocumentBuilderFactory
import javax.xml.transform.Result
import javax.xml.transform.Source
import javax.xml.transform.Transformer
import javax.xml.transform.TransformerFactory
import javax.xml.transform.dom.DOMSource
import javax.xml.transform.stream.StreamResult
/**
* Converting CSV to XML.
*
* * Date: 24/01/14 : 11:50
* Called from: Groovy Job.
*/
public class CSVtoXML extends GroovyApi {
/**
* Triggered from a Groovy Job.
* @param param
*/
public void execute(Map param) {
LOGGER.warn(String.format("At start of %s at %s", this.getClass().getName(), ArgoUtils.timeNow()));
convertCSVToXML();
LOGGER.warn(String.format("At end of %s at %s", this.getClass().getName(), ArgoUtils.timeNow()));
}
/**
* Loads and converts a file from CSV to XML.
*/
private void convertCSVToXML() {
List<String> headers = new ArrayList<String>(5);
String path = "C:\\convert\\";
path = path.replaceAll("\\", "/");
File file = new File(path, "CRR.csv");
BufferedReader reader = null;
try {
DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder domBuilder = domFactory.newDocumentBuilder();
Document newDoc = domBuilder.newDocument() as Document;
// Root element
Element rootElement = newDoc.createElement("XMLCreators");
newDoc.appendChild(rootElement);
reader = new BufferedReader(new FileReader(file));
int line = 0;
String text = null;
while ((text = reader.readLine()) != null) {
StringTokenizer st = new StringTokenizer(text, " ", false);
String[] rowValues = new String[st.countTokens()];
int index = 0;
while (st.hasMoreTokens()) {
String next = st.nextToken();
rowValues[index++] = next;
}
//String[] rowValues = text.split(",");
if (line == 0) { // Header row
for (String col : rowValues) {
headers.add(col);
}
} else { // Data row
Element rowElement = newDoc.createElement("row");
rootElement.appendChild(rowElement);
for (int col = 0; col < headers.size(); col++) {
String header = headers.get(col);
String value = null;
if (col < rowValues.length) {
value = rowValues[col];
} else {
// ?? Default value
value = "";
}
Element curElement = newDoc.createElement(header);
curElement.appendChild(newDoc.createTextNode(value));
rowElement.appendChild(curElement);
}
}
line++;
}
ByteArrayOutputStream baos = null;
OutputStreamWriter osw = null;
try {
baos = new ByteArrayOutputStream();
osw = new OutputStreamWriter(baos);
TransformerFactory tranFactory = TransformerFactory.newInstance();
Transformer aTransformer = tranFactory.newTransformer();
aTransformer.setOutputProperty(OutputKeys.INDENT, "yes");
aTransformer.setOutputProperty(OutputKeys.METHOD, "xml");
aTransformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");
Source src = new DOMSource(newDoc);
Result result = new StreamResult(osw);
aTransformer.transform(src, result);
osw.flush();
System.out.println(new String(baos.toByteArray()));
} catch (Exception exp) {
exp.printStackTrace();
} finally {
try {
osw.close();
} catch (Exception e) {
}
try {
baos.close();
} catch (Exception e) {
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
private final Logger LOGGER = Logger.getLogger(CSVtoXML.class);
}
我希望输出的格式如下，尽管具体数值可能不同，这只是一个示例。
<?xml version="1.0" encoding="UTF-8"?>
<XMLCreators>
<row>
<Name>chi</Name>
<Age>23</Age>
<sex></sex>
</row>
<row>
<Name>kay</Name>
<Age>19</Age>
<sex>male</sex>
</row>
<row>
<Name>john</Name>
<Age></Age>
<sex>male</sex>
</row>
</XMLCreators>
示例CSV：
Job Type Cntr Number Date Booking Ref Commodity Weight Special Instructions
JOB0001 Circle 12 31/09/2013 Book0001 1 100.00 Carry
JOB0002 Square 13 31/11/2013 Book0001 2 200.00 None
JOB0003 Cube 15 31-Dec-13 Book0001 3 300.00 Hide
--------------------------------------------------------------------------------------------
2014年3月2日当前代码
package com.ns.extension.tee;
import com.ns.argo.business.api.ArgoUtils
import com.ns.argo.business.api.GroovyApi
import static com.xlson.groovycsv.CsvParser.parseCsv
import groovy.xml.*
import org.apache.xalan.*
/**
* Converting CSV to XML.
* Date: 24/01/14 : 11:50
* Called from: Groovy Job.
*/
public class CSVtoXML extends GroovyApi {
public void execute(Map param) {
new File( 'C:/convert/CRR_output.xml' ).withWriter { w ->
new File( 'C:/convert/CRR.csv' ).withReader { r ->
def csvParser = parseCsv( r , speerator: ',')
w.println new StreamingMarkupBuilder().bind {
XMLCreators {
csvParser.each { line ->
println line
if( line ['Job'] ){
row {
job( line[ 'Job' ] )
type( line[ 'Type' ] )
cntr( line[ 'Cntr Number' ] )
date( line[ 'Date' ] )
bref( line[ 'Booking Ref' ] )
comm( line[ 'Commodity' ] )
weig( line[ 'Weight' ] )
spci( line[ 'Special Instructions' ] )
}
}}
}
}
}
}
}
static main( args ) {
new CSVtoXML().execute( [:] )
}
}