Java 阅读TXT文件
public class GenCategoryAttrItemHandler { private final static String INPUT_FILE_PATH = "input/category_attr_item.txt"; private final static String OUTPUT_FLIE_PATH = "output/category_attr_itemList.txt"; /** * @param args * @throws IOException */ public static void main(String[] args) throws IOException { // TODO Auto-generated method stub GetDataFromFile(); WriteDataToFile(); System.out.println("ok"); } /** * 从文件提取数据。格式化到程序中 * @throws IOException */ public static void GetDataFromFile() throws IOException { final String DELIMITER = "\t"; BufferedReader br = null; try { File file = new File(INPUT_FILE_PATH); br = new BufferedReader(new InputStreamReader(new FileInputStream(file), "UTF-8")); String line = null; while (null != (line=br.readLine())) { String[] strs = line.split(DELIMITER); Category category = new Category(Long.parseLong(strs[0]),strs[1]); Attribute attribute = new Attribute(Long.parseLong(strs[2]),strs[3]); Item item = new Item(Long.parseLong(strs[4]),strs[5]); ... }// while } catch (Exception e) { e.printStackTrace(); } finally { if (null != br) { br.close(); } } } /** * 将格式化的数据写入文件里 * @throws IOException */ public static void WriteDataToFile() throws IOException { final String DELIMITER = "\t"; BufferedWriter bw = null; try { File file = new File(OUTPUT_FLIE_PATH); bw = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file), "UTF-8")); for (int i=1; i<12; ++i) { ... bw.write(outValue); // 将数据写入文件里 bw.newLine(); // 新建一个换行符 bw.flush(); } } catch (Exception e) { e.printStackTrace(); } finally { if (null != bw) { bw.close(); } } } }
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