JDBC使用反射读取properties文件方法笔记

1,配置文件放到src下  

2，代码片段

public class CMConstant {public static String getConfigureParameterFromJDBC(String paramString) {String str = CMConstant.getRootPath() + File.separator + "WEB-INF"+ File.separator + "classes/config.properties";Properties localProperties = new Properties();try {FileInputStream localFileInputStream = new FileInputStream(str);localProperties.load(localFileInputStream);localFileInputStream.close();} catch (FileNotFoundException localFileNotFoundException) {logger.error("读取属性文件--->失败！- 原因：文件路径错误或者文件不存在");localFileNotFoundException.printStackTrace();return null;} catch (IOException localIOException) {logger.error("装载文件--->失败!");localIOException.printStackTrace();}return localProperties.getProperty(paramString);}public static String getRootPath() {String result = null;try {result = CMConstant.class.getResource("CMConstant.class").toURI().getPath().toString();} catch (URISyntaxException e1) {e1.printStackTrace();}int index = result.indexOf("WEB-INF");if (index == -1) {index = result.indexOf("bin");}result = result.substring(1, index);if (result.endsWith("/"))result = result.substring(0, result.length() - 1);// 不包含最后的"/"return result;}<span style="white-space:pre"></span>/** * 查找config/jdbc.properties里值 * @Description: @param key * @Description: @return * @Last Modified: , Date Modified: */public static String getJDBCValue(String key) {String filePath = getRootPath() + File.separator + "WEB-INF\\classes"+ File.separator + "config.properties";Properties propertie = new Properties();try {FileInputStream inputFile = new FileInputStream(filePath);propertie.load(inputFile);inputFile.close();} catch (FileNotFoundException ex) {ex.printStackTrace();return null;} catch (IOException ex) {ex.printStackTrace();}return propertie.getProperty(key);}}