下面是读取本地文件并输出内容的Java代码。
如果文件有中文,可能会乱码需要设置软件的编码格式。
public static void readFile() {
FileReader fileReader = null;
BufferedReader br = null;
String line = null;
try {
// Target file path
File testFile = new File("E:\\Test_JAVAProgram\\TestReadFile\\file.txt");
if(!testFile.exists()) {
System.out.println(testFile.getName() + " isn't existed");
}
// Read target file
fileReader = new FileReader(testFile);
br = new BufferedReader(fileReader);
line = br.readLine();
while(line != null) {
System.out.println(line);
// Notice: the following statement is necessary.
line = br.readLine();
}
}catch(Exception e) {
e.toString();
}
finally {
if(br != null) {
try {
br.close();
}catch(Exception e) {
e.toString();
br = null;
}
}
if(fileReader != null) {
try {
fileReader.close();
}catch(Exception e) {
e.toString();
}
}
}
}
while(line != null) {
System.out.println(line);
// Notice: the following statement is necessary.
line = br.readLine();
}
这里highlight出来的这一行代码,是需要注意的。没有这行代码会死循环。