Java 读取jar内包资源文件和读取jar包外资源文件

た入场券 2023-10-10 12:31 19阅读 0赞

Java 读取jar包内资源文件：

# 读取jar 包内资源文件application.properties
               InputStream appPropertiesInputStream = ApplicationPropertiesHolder.class
                        .getClassLoader().getResourceAsStream("application.properties");
    
                if (appPropertiesInputStream != null) {
                    try {
                        Properties appProperties = new Properties();
                        appProperties.load(appPropertiesInputStream);
                        if (logger.isDebugEnabled()) {
                            logger.debug("application.properties:");
                            for (Entry<Object, Object> entry : appProperties.entrySet()) {
                                logger.debug("*" + entry.getKey() + "=" + entry.getValue());
                            }
                        }
                        for (Entry<Object, Object> entry : appProperties.entrySet()) {
                            defaultProperties.put(entry.getKey(), entry.getValue());
                        }
                    } catch (IOException e) {
                        logger.error("Load application.properties error", e);
                    } finally {
                        if (appPropertiesInputStream != null) {
                            try {
                                appPropertiesInputStream.close();
                                appPropertiesInputStream = null;
                            } catch (IOException e) {
                                logger.error("InputStream Colse Error:", e);
                            }
                        }
                    }
                }

Java 读取jar包外资源文件：

# 读取jar 同级目录的config/application.properties 文件 
    String dir =new File(ApplicationPropertiesHolder.class.getProtectionDomain().getCodeSource().getLocation().getPath()).getParent();
                InputStream appPropertiesInputStream = new FileInputStream(new File(dir+File.separator+"config/application.properties"));
    
                if (appPropertiesInputStream != null) {
                    try {
                        Properties appProperties = new Properties();
                        appProperties.load(appPropertiesInputStream);
                        if (logger.isDebugEnabled()) {
                            logger.debug("application.properties:");
                            for (Entry<Object, Object> entry : appProperties.entrySet()) {
                                logger.debug("*" + entry.getKey() + "=" + entry.getValue());
                            }
                        }
                        for (Entry<Object, Object> entry : appProperties.entrySet()) {
                            defaultProperties.put(entry.getKey(), entry.getValue());
                        }
                    } catch (IOException e) {
                        logger.error("Load application.properties error", e);
                    } finally {
                        if (appPropertiesInputStream != null) {
                            try {
                                appPropertiesInputStream.close();
                                appPropertiesInputStream = null;
                            } catch (IOException e) {
                                logger.error("InputStream Colse Error:", e);
                            }
                        }
                    }
                }