做资讯网站要什么手续,做柜子设计的网站设计,2021最近最火的关键词,手机网站好还是h5好比较常用的方法是将properties文件直接打入JAR包中#xff0c;然后使用Properties类进行读取。有时候也需要读取在JAR外面的配置文件。废话不多说#xff0c;直接上代码#xff1a;import java.io.BufferedInputStream;import java.io.FileInputStream;import java.io.IOExc…比较常用的方法是将properties文件直接打入JAR包中然后使用Properties类进行读取。有时候也需要读取在JAR外面的配置文件。废话不多说直接上代码import java.io.BufferedInputStream;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStream;import java.util.NoSuchElementException;import java.util.Properties;import org.apache.commons.io.IOUtils;import org.slf4j.Logger;import org.slf4j.LoggerFactory;public class CfgFileUitls {private static final Logger logger LoggerFactory.getLogger(PropertyUtils.class);private static Properties properties;public static String getObject(String prepKey) {return properties.getProperty(prepKey);}public CfgFileUitls(String... resourcesPaths) {properties loadProperties(resourcesPaths);}public Properties getProperties() {return properties;}/*** 取出Property但以System的Property优先,取不到返回空字符串.*/private String getValue(String key) {String systemProperty System.getProperty(key);if (systemProperty ! null) {return systemProperty;}if (properties.containsKey(key)) {return properties.getProperty(key);}return ;}/*** 取出String类型的Property但以System的Property优先,如果都为Null则抛出异常.*/public String getProperty(String key) {String value getValue(key);if (value null) {throw new NoSuchElementException();}return value;}/*** 取出String类型的Property但以System的Property优先.如果都为Null则返回Default值.*/public String getProperty(String key, String defaultValue) {String value getValue(key);return value ! null ? value : defaultValue;}/*** 取出Integer类型的Property但以System的Property优先.如果都为Null或内容错误则抛出异常.*/public Integer getInteger(String key) {String value getValue(key);if (value null) {throw new NoSuchElementException();}return Integer.valueOf(value);}/*** 取出Integer类型的Property但以System的Property优先.如果都为Null则返回Default值如果内容错误则抛出异常*/public Integer getInteger(String key, Integer defaultValue) {String value getValue(key);return value ! null ? Integer.valueOf(value) : defaultValue;}/*** 取出Double类型的Property但以System的Property优先.如果都为Null或内容错误则抛出异常.*/public Double getDouble(String key) {String value getValue(key);if (value null) {throw new NoSuchElementException();}return Double.valueOf(value);}/*** 取出Double类型的Property但以System的Property优先.如果都为Null则返回Default值如果内容错误则抛出异常*/public Double getDouble(String key, Integer defaultValue) {String value getValue(key);return value ! null ? Double.valueOf(value) : defaultValue;}/*** 取出Boolean类型的Property但以System的Property优先.如果都为Null抛出异常,如果内容不是true/false则返回false.*/public Boolean getBoolean(String key) {String value getValue(key);if (value null) {throw new NoSuchElementException();}return Boolean.valueOf(value);}/*** 取出Boolean类型的Property但以System的Property优先.如果都为Null则返回Default值,如果内容不为true/false则返回false.*/public Boolean getBoolean(String key, boolean defaultValue) {String value getValue(key);return value ! null ? Boolean.valueOf(value) : defaultValue;}/*** 载入多个文件, 文件路径使用Spring Resource格式.*/private Properties loadProperties(String... resourcesPaths) {Properties props new Properties();for (String location : resourcesPaths) {// logger.debug(Loading properties file from: location);InputStream is null;try {is new BufferedInputStream(new FileInputStream(location));props.load(is);} catch (IOException ex) {logger.info(Could not load properties from path: location , ex.getMessage());} finally {IOUtils.closeQuietly(is);}}return props;}}
