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add method

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This commit is contained in:
Looly
2022-01-13 11:00:50 +08:00
parent f85f29174d
commit c5673bb06b
1 changed files with 11 additions and 2 deletions
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13
hutool-core/src/main/java/cn/hutool/core/io/file/FileWriter.java
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@@ -206,11 +206,20 @@ public class FileWriter extends FileWrapper {
*/ */
public <T> File writeLines(Iterable<T> list, LineSeparator lineSeparator, boolean isAppend) throws IORuntimeException { public <T> File writeLines(Iterable<T> list, LineSeparator lineSeparator, boolean isAppend) throws IORuntimeException {
try (PrintWriter writer = getPrintWriter(isAppend)) { try (PrintWriter writer = getPrintWriter(isAppend)) {
boolean isFirst = true;
for (T t : list) { for (T t : list) {
if (null != t) { if (null != t) {
printNewLine(writer, lineSeparator); if(isFirst){
isFirst = false;
if(isAppend && FileUtil.isNotEmpty(this.file)){
// 追加模式下且文件非空，补充换行符
printNewLine(writer, lineSeparator);
}
} else{
printNewLine(writer, lineSeparator);
}
writer.print(t); writer.print(t);
writer.flush(); writer.flush();
} }
} }