Class AddTableField

src/main/java/util/AddTableField.java:14–261

import java.util.List;

@Slf4j
public class AddTableField {

    /**
     * 一次性读取全部文件数据
     * @param strFile
     */
    public static void readFile(String strFile) {
        try {
            InputStream is = new FileInputStream(strFile);
            int iAvail = is.available();
            byte[] bytes = new byte[iAvail];
            is.read(bytes);
            log.info("文件内容:\n" + new String(bytes));
            is.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 按行读取文件
     * @param strFile
     */
    public static List<String> readFileByLine(String strFile) {
        List<String> strList = new ArrayList<>();
        try {
            File file = new File(strFile);
            BufferedReader bufferedReader = new BufferedReader(new FileReader(file));
            String strLine = null;
            int lineCount = 1;
            while (null != (strLine = bufferedReader.readLine())) {
                strList.add(strLine);
//                log.info("第[" + lineCount + "]行数据:[" + strLine + "]");
//                System.out.println("第[" + lineCount + "]行数据:[" + strLine + "]");
                lineCount++;
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return strList;
    }

    /**
     * 按行读取全部文件数据
     *
     * @param strFile
     */
    public static StringBuffer readFileAll(String strFile) throws IOException {
        StringBuffer strSb = new StringBuffer();
        InputStreamReader inStrR = new InputStreamReader(new FileInputStream(strFile), "UTF-8");
        // character streams
        BufferedReader br = new BufferedReader(inStrR);
        String line = br.readLine();
        while (line != null) {
            strSb.append(line).append("\r\n");
            line = br.readLine();
        }