java.io.FileNotFoundException: Invalid file path
at java.io.FileOutputStream.<init>(FileOutputStream.java:206)
at java.io.FileOutputStream.<init>(FileOutputStream.java:162)
at com.crazymakercircle.iodemo.socketDemos.NioReceiveServer.processData(NioReceiveServer.java:148)
at com.crazymakercircle.iodemo.socketDemos.NioReceiveServer.startServer(NioReceiveServer.java:101)
at com.crazymakercircle.iodemo.socketDemos.NioReceiveServer.main(NioReceiveServer.java:194)
* 处理客户端传输过来的数据
private void processData(SelectionKey key) throws IOException {
Client client = clientMap.get(key.channel());
SocketChannel socketChannel = (SocketChannel) key.channel();
int num = 0;
try {
buffer.clear();
while ((num = socketChannel.read(buffer)) > 0) {
buffer.flip();
if (null == client.fileName) {
String fileName = charset.decode(buffer).toString();
String destPath = IOUtil.getResourcePath(NioDemoConfig.SOCKET_RECEIVE_PATH);
File directory = new File(destPath);
if (!directory.exists()) {
directory.mkdir();
client.fileName = fileName;
String fullName = directory.getAbsolutePath()
+ File.separatorChar + fileName;
Logger.debug("NIO 传输目标文件：" + fullName);
File file = new File(fullName);
FileChannel fileChannel = new FileOutputStream(file).getChannel();
client.outChannel = fileChannel;
else if (0 == client.fileLength) {
long fileLength = buffer.getLong();
client.fileLength = fileLength;
client.startTime = System.currentTimeMillis();
Logger.debug("NIO 传输开始：");
else {
client.outChannel.write(buffer);
buffer.clear();
key.cancel();
} catch (IOException e) {
key.cancel();
e.printStackTrace();
return;
if (num == -1) {
IOUtil.closeQuietly(client.outChannel);
System.out.println("上传完毕");
key.cancel();
Logger.debug("文件接收成功,File Name：" + client.fileName);
Logger.debug(" Size：" + IOUtil.getFormatFileSize(client.fileLength));
long endTime = System.currentTimeMillis();
Logger.debug("NIO IO 传输毫秒数：" + (endTime - client.startTime));
File file = new File(fullName);
创建了一个File对象，但是fullName代表的文件必须存在。但是根据代码业务逻辑。复制文件时，新文件一般是不存在的，所以必须手动新建文件。
File file = new File(fullName);
if (!file.exists()){
try {
file.createNewFile();
} catch (IOException e) {
e.printStackTrace();
这段代码的意思是，创建一个名为file的File对象，如果该文件不存在，则手动创建，再次运行，则此异常消失。
* 处理客户端传输过来的数据
private void processData(SelectionKey key) throws IOException {
Client client = clientMap.get(key.channel());
SocketChannel socketChannel = (SocketChannel) key.channel();
int num = 0;
try {
buffer.clear();
while ((num = socketChannel.read(buffer)) > 0) {
buffer.flip();
if (null == client.fileName) {
String fileName = charset.decode(buffer).toString();
String destPath = IOUtil.getResourcePath(NioDemoConfig.SOCKET_RECEIVE_PATH);
File directory = new File(destPath);
if (!directory.exists()) {
directory.mkdir();
client.fileName = fileName;
String fullName = directory.getAbsolutePath()
+ File.separatorChar + fileName;
Logger.debug("NIO 传输目标文件：" + fullName);
File file = new File(fullName);
if (!file.exists()){
try {
file.createNewFile();
} catch (IOException e) {
e.printStackTrace();
FileChannel fileChannel = new FileOutputStream(file).getChannel();
client.outChannel = fileChannel;
else if (0 == client.fileLength) {
long fileLength = buffer.getLong();
client.fileLength = fileLength;
client.startTime = System.currentTimeMillis();
Logger.debug("NIO 传输开始：");
else {
client.outChannel.write(buffer);
buffer.clear();
key.cancel();
} catch (IOException e) {
key.cancel();
e.printStackTrace();
return;
if (num == -1) {
IOUtil.closeQuietly(client.outChannel);
System.out.println("上传完毕");
key.cancel();
Logger.debug("文件接收成功,File Name：" + client.fileName);
Logger.debug(" Size：" + IOUtil.getFormatFileSize(client.fileLength));
long endTime = System.currentTimeMillis();
Logger.debug("NIO IO 传输毫秒数：" + (endTime - client.startTime));
写的不到位的地方还请多多指教！虚心向各位大神学习。
文章目录异常信息2异常代码原因分析解决方案完整代码总结异常信息java.io.FileNotFoundException: Invalid file path at java.io.FileOutputStream.<init>(FileOutputStream.java:206) at java.io.FileOutputStream.<init>(FileOut...
01-错误信息：
Exception in thread "main" java.io.FileNotFoundException: e:b (拒绝访问。)
at java.io.FileOutputStream.open0(Native Method)
at java.io.FileOutputStream.open(Unknown Source)
at java.io.FileOutputStream.<init>(Unknown Source)
at java.io.FileOu
java.io.FileNotFoundException:
class path resource [db/aixing.db] cannot be resolved to
absolute file path because it does not reside in the file system:
jar:file:/C:/Users/office/Desktop/card_active-0.0.1-SNAPSHOT.jar!/
BOOT-INF/classes!
java.
io.
FileNotFoundException:解决方法
运行如下代码会出现
java.
io.
FileNotFoundException:D:\IDEA%20Workspace\out\product
ion\day04_JDBC\jdbc.properties (系统找不到指定的路径。)
```
java
public class test {
public static void main(String[] args) {
try {
xn
io创建channel的代码：
后出现报错信息：Except
ion in thread “main”
java.
io.
IOExcept
ion:
Invalid file path。
在 jvm 参数中，添加-Djdk.
io.
File.enableADS=true即可。
一、问题 在使用FileInputStream或FileOutputStream时会遇到如下问题1和问题2。 问题1：
java.io.FileNotFoundException: .\xxx\xxx.txt (系统找不到指定的路径。)
at java.io.FileOu...
./gradlew run --args= " /
path/to/
file "
如果文件不存在给定的路径，或者您尝试在没有路径的情况下运行该应用程序，则该应用程序将显示一条错误消息。 例如：
Invalid input
file: /
path/to/
file.
Input
file cannot be blank.
如果提供有效的得分表文件，您将在控制台中看到结果：
Frame 1 2 3 4 5 6 7
System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.ReportViewer.WinForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. 系统找不到指定的文件。
File name: 'Microsoft.ReportViewer.WinForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
at SupSystem.fr_Print..ctor()
（这段代码位于Src_exp2_3.java中）
public static String getValue(String key) throws IOException{
Properties pro = new Properties();
// here
FileReader in = new FileReader("pro.txt");
pro.load(in);
in.close();
