假设d盘根目录下有一个test.txt文件,文件内容为:标题:什么都有
格式:txt
date:2008-11-24
【青春心】
...
挑战极限
突破界限到无限
用好本领显我身手
...
time:21:32
csdn讨论组
end如何提取从date之后到time之前的内容(有很多行)?public class Test{
public static void main(String[] args){
BufferedReader br = new BufferedReader(new FileReader("d:\\test.txt"));
接下来怎么写?
}
}
格式:txt
date:2008-11-24
【青春心】
...
挑战极限
突破界限到无限
用好本领显我身手
...
time:21:32
csdn讨论组
end如何提取从date之后到time之前的内容(有很多行)?public class Test{
public static void main(String[] args){
BufferedReader br = new BufferedReader(new FileReader("d:\\test.txt"));
接下来怎么写?
}
}
String line = br.readLine();
boolean done = false;
while( (line = br.readLine()) != null) {
if (line.startsWith("date:")) {
while (line = br.readLine() != null) {
if (line.startsWith("time:") {
done = true;
break;
}
else {
System.out.println(line);
}
}
}
if (done) {
break;
}
}
String str = "";
File file = new File(filePath);
if(file.exists()) {
StringBuilder sb = new StringBuilder();
BufferedReader br = new BufferedReader(new FileReader(file));
String oneLine = "";
String state = "ending";
while((oneLine=br.readLine()) != null) {
if(oneLine.startsWith("date:")) {
state = "reading";
continue;
}
if(oneLine.startsWith("time:")) state = "ending";
if(state.equals("reading")) sb.append(oneLine.trim()).append("\r\n");
}
str = sb.toString();
}
return str;
} public static void main(String[] args) {
PatternTest test = new PatternTest();
try{
System.out.println(test.getPatternString("d:/test.txt"));
}catch(Exception e) {
e.printStackTrace();
}
}
import java.io.File;
import java.io.IOException;
import java.util.Scanner;
public class ReadandWrite {
public static String method1(){
Scanner scanner = null;
String s = "";
try {
scanner = new Scanner(new File("E:\\temp\\www.txt"));
while (scanner.hasNext()) {
String str = scanner.next();
if(str.equals("time:21:32")){
break;
}
s =s+ str+"\n";
}
} catch(IOException e) {
e.printStackTrace();
} finally {
scanner.close();
}
return s;
}
public static void main(String args[]){
System.out.print(ReadandWrite.method1());
}
}这样测试可以
1楼的 这句 有错
String line = "";
while((line==br.readLine())!=null){
...........
}