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add filter read line

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likeguo 2023-03-22 23:30:03 +08:00
parent 0d8dfb73d8
commit 4b7da5119b
1 changed files with 34 additions and 0 deletions
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34
hutool-core/src/main/java/cn/hutool/core/io/FileUtil.java
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@ -13,6 +13,7 @@ import cn.hutool.core.io.file.Tailer;
import cn.hutool.core.io.resource.ResourceUtil; import cn.hutool.core.io.resource.ResourceUtil;
import cn.hutool.core.io.unit.DataSizeUtil; import cn.hutool.core.io.unit.DataSizeUtil;
import cn.hutool.core.lang.Assert; import cn.hutool.core.lang.Assert;
import cn.hutool.core.lang.Filter;
import cn.hutool.core.util.ArrayUtil; import cn.hutool.core.util.ArrayUtil;
import cn.hutool.core.util.CharUtil; import cn.hutool.core.util.CharUtil;
import cn.hutool.core.util.CharsetUtil; import cn.hutool.core.util.CharsetUtil;
@ -49,6 +50,7 @@ import java.util.List;
import java.util.Map; import java.util.Map;
import java.util.Objects; import java.util.Objects;
import java.util.function.Consumer; import java.util.function.Consumer;
import java.util.function.Predicate;
import java.util.jar.JarFile; import java.util.jar.JarFile;
import java.util.zip.CRC32; import java.util.zip.CRC32;
import java.util.zip.Checksum; import java.util.zip.Checksum;
@ -2222,6 +2224,19 @@ public class FileUtil extends PathUtil {
return readLines(file, CharsetUtil.CHARSET_UTF_8); return readLines(file, CharsetUtil.CHARSET_UTF_8);
} }
/**
* 从文件中读取每一行数据
*
* @param file 文件
* @param filter 过滤器
* @return 文件中的每行内容的集合List
* @throws IORuntimeException IO异常
* @since 3.1.1
*/
public static List<String> readUtf8Lines(File file, Predicate<String> filter) throws IORuntimeException {
return readLines(file, CharsetUtil.CHARSET_UTF_8, filter);
}
/** /**
* 从文件中读取每一行数据 * 从文件中读取每一行数据
* *
@ -2246,6 +2261,25 @@ public class FileUtil extends PathUtil {
return readLines(file, charset, new ArrayList<>()); return readLines(file, charset, new ArrayList<>());
} }
/**
* 从文件中读取每一行数据
*
* @param file 文件
* @param charset 字符集
* @param filter 过滤器
* @return 文件中的每行内容的集合List
* @throws IORuntimeException IO异常
*/
public static List<String> readLines(File file, Charset charset, Predicate<String> filter) throws IORuntimeException {
final List<String> result = new ArrayList<>();
readLines(file, charset, (LineHandler) line -> {
if (Boolean.TRUE.equals(filter.test(line))) {
result.add(line);
}
});
return result;
}
/** /**
* 按行处理文件内容，编码为UTF-8 * 按行处理文件内容，编码为UTF-8
* *