java - 使用不正确的字符集打开 CSV Java 生成的文件

Question

下面是用于生成 CSV 文件的 java 代码。尽管在调试此 report.getEncoding() 时获取了“UTF-8”值，但生成的文件使用了错误的字符集。

public void generateFile(ReportBean<T> report, String filename, ReportAggregationPosition reportAggregationPosition) throws IOException {
    try (PrintWriter out = new PrintWriter(new OutputStreamWriter(new FileOutputStream(filename), report.getEncoding()))) {
        List<T> filteredResult = new ArrayList();
        for (T row : report.getResult()) {
            if (logRow(row)) {
                log.info("Logging row for report={} - {}", filename, getText(row));
            }
            if (ignoreRow(row)) {
                log.info("Ignoring row for report={} - {}", filename, getText(row));
                continue;
            }
            filteredResult.add(row);
        }
        if (reportAggregationPosition == ReportAggregationPosition.FIRST) {
            out.println(filteredResult.size());
        }
        out.print(getHeader());
        if (reportAggregationPosition == ReportAggregationPosition.SECOND) {
            out.println(filteredResult.size());
        }
        for (T row : filteredResult) {
            out.print(getText(row));
        }
        if (reportAggregationPosition == ReportAggregationPosition.LAST) {
            out.println(String.format("Total number of rows: %s", filteredResult.size()));
        }
    }

预期值为:

test-vfde - The hidden edition - Gebühr pro Benutzer Leistungszeit 07/07/16 bis 08/05/16

但显示的值(我无法上传照片，因为我仍然没有积分)如下:

test-vfde - The hidden edition - GebÇŸ’?Ç?¶¬hr pro Benutzer Leistungszeit 07/07/16 bis 08/05/16

字符“ä”或“ü”正确显示。我应该如何处理这个问题？

Answer 1

尝试添加以下行

.....
try (PrintWriter out = new PrintWriter(new OutputStreamWriter(new FileOutputStream(filename), report.getEncoding()))) {
    out.write(0xef);
    out.write(0xbb);
    out.write(0xbf);
    List<T> filteredResult = new ArrayList();
    .....

描述可以找到here