一、文档读取将文件读取为Stringpublic static String TxtToString(File file) { String result = ""; try { BufferedReader
一、文档读取
将文件读取为String
public static String TxtToString(File file) {
String result = "";
try {
BufferedReader br = new BufferedReader(new FileReader(file));
//构造一个BufferedReader类来读取文件
String s = null;
while ((s = br.readLine()) != null) {//使用readLine方法,一次读一行
result = result + "
" + s;
}
br.close();
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
将文件读取为List集合(按行)(免费视频教程分享:java免费视频教程)
public static List TxtToStringList(File file) {
List result = new ArrayList<>();
try {
if (!file.exists()){
return null;
}
BufferedReader br = new BufferedReader(new FileReader(file));
//构造一个BufferedReader类来读取文件
String s = null;
while ((s = br.readLine()) != null) {//使用readLine方法,一次读一行
result.add(s);
}
br.close();
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
二、Java存储文件
将list按行写入到txt文件中
public static void writeFileContext(List strings) throws Exception {
File file = new File("D:IntellijideaProjecTKEChenSheJidataWordLibrary_index");
//如果没有文件就创建
if (!file.isFile()) {
file.createNewFile();
}
BufferedWriter writer = new BufferedWriter(new FileWriter
("D:IntellijIDEAProjectKeChenSheJidataWordLibrary_index"));
for (String l:strings){
writer.write(l + "
");
}
writer.close();
}
按照名字将string类型的集合存入文件
public static void writeFileContext_Find(List strings,String name) throws Exception {
File file = new File("D:IntellijIDEAProjectKeChenSheJidatawordIndex");
//如果没有文件就创建
if (!file.isFile()) {
file.createNewFile();
}
BufferedWriter writer = new BufferedWriter(new FileWriter
("D:IntellijIDEAProjectKeChenSheJidatawordIndex"+name));
for (String l:strings){
writer.write(l + "
");
}
writer.close();
将Sting类型的list集合按文件地址存储
public static void writeFileContext_Found(List strings,String filename) throws Exception {
File file = new File(filename);
//如果没有文件就创建
if (!file.isFile()) {
file.createNewFile();
}
BufferedWriter writer = new BufferedWriter(new FileWriter
("D:IntellijIDEAProjectKeChenSheJidatafile_index"+file.getName()));
for (String l:strings){
writer.write(l + "
");
}
writer.close();
}
相关文章教程推荐:java快速入门
--结束END--
本文标题: java中如何实现文件的读入与读出
本文链接: https://www.lsjlt.com/news/4238.html(转载时请注明来源链接)
有问题或投稿请发送至: 邮箱/279061341@qq.com QQ/279061341
下载Word文档到电脑,方便收藏和打印~
2024-04-03
2024-04-03
2024-04-01
2024-01-21
2024-01-21
2024-01-21
2024-01-21
2023-12-23
回答
回答
回答
回答
回答
回答
回答
回答
回答
回答
0