文件整行读取

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;


public class ReadFile {

	public static void main(String[] args) {
		File f = new File("D://insoon.sql");
		StringBuffer sb = new StringBuffer();
		BufferedReader reader = null;
		try {
			System.out.println("以行为单位读取文件内容，一次读一整行：");
			reader = new BufferedReader(new FileReader(f));
			String tempString = null;
			int line = 1;
			// 一次读入一行，直到读入null为文件结束
			while ((tempString = reader.readLine()) != null) {
				// 显示行号
				System.out.println("line " + line + ": " + tempString);
				sb.append(tempString);
				line++;
			}
			reader.close();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			if (reader != null) {
				try {
					reader.close();
				} catch (IOException e1) {
				}
			}
		}
	}
}