我使用Univocity将Resultset转换为CSV格式的字符串,使用以下代码:
StringWriter stringWriter = new StringWriter();
CsvWriterSettings csvWriterSettings = new CsvWriterSettings();
ResultSetMetaData metaData = resultSet.getMetaData();
int columnCount = metaData.getColumnCount();
String headers[] = new String[columnCount];
for (int i = 0; i < columnCount; i++) {
headers[i] = metaData.getColumnLabel(i + 1);
}
for (int i = 0; i < headers.length; i++) {
if (fieldMapping != null && fieldMapping.containsKey(headers[i])) {
headers[i] = fieldMapping.get(headers[i]);
}
}
csvWriterSettings.setHeaders(headers);
csvWriterSettings.setHeaderWritingEnabled(true);
if (csvSeparator != null) {
csvWriterSettings.getFormat().setDelimiter(csvSeparator.charAt(0));
}
if (isQuoteFields) {
csvWriterSettings.setQuoteAllFields(true);
}
if (isCStyleEscape) {
csvWriterSettings.getFormat().setQuoteEscape(',');
csvWriterSettings.getFormat().setCharToEscapeQuoteEscaping('\\');
}
CsvRoutines csvRoutines = new CsvRoutines(csvWriterSettings);
csvRoutines.write(resultSet, stringWriter);
return stringWriter.toString();
我尝试在输出中设置自定义标头,但返回的输出始终具有默认标头。
有没有办法在输出csv格式字符串中设置自己的标题值。
答案 0 :(得分:0)
这是一个错误,我刚刚打开了一个错误报告here),因此这将在2.5.0+版本中开箱即用。目前有一个解决方法:
首先设置您想要的标题:
String headers[] = {"My", "Custom", "Header"};
csvWriterSettings.setHeaders(headers);
将带有标题的单行写入输出:
CsvWriter headerWriter = new CsvWriter(stringWriter, csvWriterSettings);
headerWriter.writeRow(headers);
转储ResultSet
:
CsvRoutines csvRoutines = new CsvRoutines(csvWriterSettings);
csvRoutines.write(resultSet, stringWriter);
关闭您创建的编辑器以生成标题:
headerWriter.close();
希望这有帮助。