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File2StringWithCommonsExample.java
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File2StringWithCommonsExample.java
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package io.github.zzycreate.example.file.file2string;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.StringWriter;
import java.nio.charset.StandardCharsets;
import static io.github.zzycreate.example.constant.FileConstant.FILE_NAME_INPUT;
/**
* @author zzycreate
* @date 19-5-7
*/
public class File2StringWithCommonsExample {
/**
* 使用 IOUtils.copy 直接将 Reader/InputStream 转换为 Writer/OutputStream
*
* @return 文件内容
*/
public static String readByIoUtilsCopy() {
try (FileReader fileReader = new FileReader(FILE_NAME_INPUT);
StringWriter stringWriter = new StringWriter()) {
IOUtils.copy(fileReader, stringWriter);
return stringWriter.toString();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
/**
* 使用 FileUtils 的 readFileToString 直接读取文件内容,可以设置字符编码
*
* @return 文件内容
*/
public static String readByFileUtilsReadFileToString() {
try {
return FileUtils.readFileToString(new File(FILE_NAME_INPUT), StandardCharsets.UTF_8);
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
}