1.使用FileInputStream实现读取txt文件内容:
/**传入txt路径读取txt文件
* @param txtPath
* @return 返回读取到的内容
*/
public static String readTxt(String txtPath) {
File file = new File(txtPath);
if(file.isFile() && file.exists()){
try {
FileInputStream fileInputStream = new FileInputStream(file);
InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream);
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
StringBuffer sb = new StringBuffer();
String text = null;
while((text = bufferedReader.readLine()) != null){
sb.append(text);
}
return sb.toString();
} catch (Exception e) {
e.printStackTrace();
}
}
return null;
}
2.使用FileOutputStream实现写入txt文件内容:
/**使用FileOutputStream来写入txt文件
* @param txtPath txt文件路径
* @param content 需要写入的文本
*/
public static void writeTxt(String txtPath,String content){
FileOutputStream fileOutputStream = null;
File file = new File(txtPath);
try {
if(file.exists()){
//判断文件是否存在,如果不存在就新建一个txt
file.createNewFile();
}
fileOutputStream = new FileOutputStream(file);
fileOutputStream.write(content.getBytes());
fileOutputStream.flush();
fileOutputStream.close();
} catch (Exception e) {
e.printStackTrace();
}
}
3.验证代码
public static void main(String[] args) {
writeTxt("D:/yzm/result1.txt", "测试写入txt文件内容");
String str = readTxt("D:/yzm/result1.txt");
System.out.println(str);
}