问题
I am using apache POI 3.7. I am trying to replace the value of a table column in a word document (docx). However, what I have done is it keeps appending the value of the current value in the document. But if a table column value is null, it places the value. Can you give me some thoughts how to resolve this. Below is the code I have done so far.
Thanks in advance.
package test.doc;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.apache.poi.xwpf.usermodel.XWPFTable;
import org.apache.poi.xwpf.usermodel.XWPFTableCell;
import org.apache.poi.xwpf.usermodel.XWPFTableRow;
public class POIDocXTableTest {
public static void main(String[] args)throws IOException {
String fileName = "C:\\Test.docx";
InputStream fis = new FileInputStream(fileName);
XWPFDocument document = new XWPFDocument(fis);
List<XWPFParagraph> paragraphs = document.getParagraphs();
for (int x=0; x<paragraphs.size();x++)
{
XWPFParagraph paragraph = paragraphs.get(x);
System.out.println(paragraph.getParagraphText());
}
List<XWPFTable> tables = document.getTables();
for (int x=0; x<tables.size();x++)
{
XWPFTable table = tables.get(x);
List<XWPFTableRow> tableRows = table.getRows();
tableRows.remove(x);
for (int r=0; r<tableRows.size();r++)
{
System.out.println("Row "+ (r+1)+ ":");
XWPFTableRow tableRow = tableRows.get(r);
List<XWPFTableCell> tableCells = tableRow.getTableCells();
for (int c=0; c<tableCells.size();c++)
{
System.out.print("Column "+ (c+1)+ ": ");
XWPFTableCell tableCell = tableCells.get(c);
//tableCell.setText("TAE");
String tableCellVal = tableCell.getText();
if ((c+1)==2){
if (tableCellVal!=null){
if (tableCellVal.length()>0){
char c1 = tableCellVal.charAt(0);
String s2 = "-TEST";
char c2 = s2.charAt(0);
String test = tableCell.getText().replace(tableCellVal,s2);
tableCell.setText(test);
}else{
//tableCell.setText("NULL");
}
}
}
System.out.println("tableCell.getText(" + (c) + "):" + tableCellVal);
}
}
System.out.println("\n");
}
OutputStream out = new FileOutputStream(fileName);
document.write(out);
out.close();
}
}
回答1:
The best solution to prevent styles in paragraphs and find search strings with different styles is this method:
private long replaceInParagraphs(Map<String, String> replacements, List<XWPFParagraph> xwpfParagraphs) {
long count = 0;
for (XWPFParagraph paragraph : xwpfParagraphs) {
List<XWPFRun> runs = paragraph.getRuns();
for (Map.Entry<String, String> replPair : replacements.entrySet()) {
String find = replPair.getKey();
String repl = replPair.getValue();
TextSegement found = paragraph.searchText(find, new PositionInParagraph());
if ( found != null ) {
count++;
if ( found.getBeginRun() == found.getEndRun() ) {
// whole search string is in one Run
XWPFRun run = runs.get(found.getBeginRun());
String runText = run.getText(run.getTextPosition());
String replaced = runText.replace(find, repl);
run.setText(replaced, 0);
} else {
// The search string spans over more than one Run
// Put the Strings together
StringBuilder b = new StringBuilder();
for (int runPos = found.getBeginRun(); runPos <= found.getEndRun(); runPos++) {
XWPFRun run = runs.get(runPos);
b.append(run.getText(run.getTextPosition()));
}
String connectedRuns = b.toString();
String replaced = connectedRuns.replace(find, repl);
// The first Run receives the replaced String of all connected Runs
XWPFRun partOne = runs.get(found.getBeginRun());
partOne.setText(replaced, 0);
// Removing the text in the other Runs.
for (int runPos = found.getBeginRun()+1; runPos <= found.getEndRun(); runPos++) {
XWPFRun partNext = runs.get(runPos);
partNext.setText("", 0);
}
}
}
}
}
return count;
}
This method works with search strings spanning over more than one Run. The replaced part gets the style from the first found Run.
回答2:
well, I have done something like that, to replace marks in a word template by specified words...:
public DotxTemplateFiller() {
String filename = "/poi/ls_Template_modern_de.dotx";
String outputPath = "/poi/output/output" + new Date().getTime()
+ ".dotx";
OutputStream out = null;
try {
File file = new File(filename);
XWPFDocument template = new XWPFDocument(new FileInputStream(file));
List<XWPFParagraph> xwpfParagraphs = template.getParagraphs();
replaceInParagraphs(xwpfParagraphs);
List<XWPFTable> tables = template.getTables();
for (XWPFTable xwpfTable : tables) {
List<XWPFTableRow> tableRows = xwpfTable.getRows();
for (XWPFTableRow xwpfTableRow : tableRows) {
List<XWPFTableCell> tableCells = xwpfTableRow
.getTableCells();
for (XWPFTableCell xwpfTableCell : tableCells) {
xwpfParagraphs = xwpfTableCell.getParagraphs();
replaceInParagraphs(xwpfParagraphs);
}
}
}
out = new FileOutputStream(new File(outputPath));
template.write(out);
out.flush();
out.close();
//System.exit(0);
} catch (IOException e) {
e.printStackTrace();
} finally {
if (out != null) {
try {
out.close();
} catch (IOException e) {
// nothing to do ....
}
}
}
}
/**
* @param xwpfParagraphs
*/
private void replaceInParagraphs(List<XWPFParagraph> xwpfParagraphs) {
for (XWPFParagraph xwpfParagraph : xwpfParagraphs) {
List<XWPFRun> xwpfRuns = xwpfParagraph.getRuns();
for (XWPFRun xwpfRun : xwpfRuns) {
String xwpfRunText = xwpfRun.getText(xwpfRun
.getTextPosition());
for (Map.Entry<String, String> entry : replacements
.entrySet()) {
if (xwpfRunText != null
&& xwpfRunText.contains(entry.getKey())) {
xwpfRunText = xwpfRunText.replaceAll(
entry.getKey(), entry.getValue());
}
}
xwpfRun.setText(xwpfRunText, 0);
}
}
}
public static void main(String[] args) {
new DotxTemplateFiller();
}
First I did it for regular paragraphs in the MS Word template and than for paragraphs inside table cells. Hope it is helpful for you and I hope I understood your problem right... :-)
Best wishes.
来源：https://stackoverflow.com/questions/8398259/replace-table-column-value-in-apache-poi