Spring项目读取resource下的文件

直接上代码
public String readConfigAsStringNotJar() throws IOException {
    // ClassPathResource类的构造方法接收路径名称，自动去classpath路径下找文件
    ClassPathResource classPathResource = new ClassPathResource("config.json");
    // 获得File对象，当然也可以获取输入流对象
    File file = classPathResource.getFile();
    BufferedReader bufferedReader = new BufferedReader(new FileReader(file));
    StringBuilder content = new StringBuilder();
    String line;
    while ((line = bufferedReader.readLine()) != null) {
        content.append(line);
    }
    return content.toString();
}

public static String readConfigAsStringJar() throws IOException {
    // ClassPathResource类的构造方法接收路径名称，自动去classpath路径下找文件
    // 获得File对象，当然也可以获取输入流对象
    InputStream inputStream = Thread.currentThread().getContextClassLoader().getResourceAsStream("config.json");
    StringBuilder content = new StringBuilder();
    try (InputStreamReader isr = new InputStreamReader(inputStream, UTF_8);
         BufferedReader bufferedReader = new BufferedReader(isr)) {
        String line;
        while ((line = bufferedReader.readLine()) != null) {
            content.append(line);
        }
    }
    return content.toString();
}