SpringBoot读取resources目录下文件

 /**
     * SpringBoot 读取resources目录下文件
     * 如读取文件：src/main/resources/alipay/appCertPublicKey.crt
     * @return
     */
    private String readResourcesFile(){
        String path="alipay/appCertPublicKey.crt";
        org.springframework.core.io.Resource resource = new ClassPathResource(path);
        StringBuffer contentBuffer = new StringBuffer();
        InputStream inputStream = null;
        InputStreamReader streamReader = null;
        BufferedReader bufferedReader = null;
        String content;
        try{
            inputStream = resource.getInputStream();
            streamReader = new InputStreamReader(inputStream);
            bufferedReader = new BufferedReader(streamReader);

            while((content = bufferedReader.readLine()) != null) {
                contentBuffer.append(content+"\n");
            }
            log.info(path+":content:"+contentBuffer.toString());
        }catch (Exception e){
            e.printStackTrace();
        }finally {
            try{
                if(bufferedReader!=null){
                    bufferedReader.close();
                }

                if(streamReader!=null){
                    streamReader.close();
                }

                if(inputStream!=null){
                    inputStream.close();
                }
            }catch (Exception e){
                e.printStackTrace();
            }
        }

        return contentBuffer.toString();
    }