我试图从子项目中读取文件 sample-dfx-sbi
文件位于 src / main / resources 文件夹
内确切的文件位置是 src / main / resources / wm / device.txt
使用以下逻辑来读取文件
static final ClassLoader loader = DummyClass.class.getClassLoader();
public void getData(String ip)throws IOException {
String filepath = loader.getResource("/wm/device.txt").toString();
System.out.println(filepath);
File file = new File(filepath);
FileReader fileReader = new FileReader(file); // exception
...
例外:
jar:file:/home/user/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/sample-dfx-web/WEB-INF/lib/sample-dfx-sbi-0.0.1-SNAPSHOT.jar!/wm/device.txt
java.io.FileNotFoundException: jar:file:/home/user/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/sample-dfx-web/WEB-INF/lib/sample-dfx-sbi-0.0.1-SNAPSHOT.jar!/wm/device.txt (No such file or directory)
at java.io.FileInputStream.open0(Native Method)
at java.io.FileInputStream.open(FileInputStream.java:195)
at java.io.FileInputStream.<init>(FileInputStream.java:138)
当我到工作区内的上方位置并提取jar文件时,我可以看到wm / device.txt
那为什么文件没有加载?
答案 0 :(得分:1)
在JAR
绑定资源时将资源作为流读取。
public String loadResource(String filelocation) {
if (filelocation != null && !filelocation.trim().isEmpty()) {
try (
InputStream inputStream = getClass().getResourceAsStream(filelocation);
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));) {
String fileLine = "";
StringBuffer stringBuffer = new StringBuffer();
while((fileLine = bufferedReader.readLine())!= null){
stringBuffer.append(fileLine);
}
return stringBuffer.toString();
} catch (Exception e) {
e.printStackTrace();
}
}
return null;
}