读取properties配置文件的工具类

public class PropertiesUtil {

private static final Logger LOGGER = Logger.getLogger(PropertiesUtil.class);


private final Properties props;


public PropertiesUtil(final Properties props) {
this.props = props;
}


public PropertiesUtil(final String propertiesFileName) {
final Properties properties = new Properties();
InputStreamReader in = null;
try {
in = new InputStreamReader(new FileInputStream(this.getClass().getResource("/").getPath()+propertiesFileName), "UTF-8");
//in = PropertiesUtil.class.getClassLoader().getResourceAsStream(propertiesFileName);
properties.load(in);
} catch (final IOException ioe) {
LOGGER.error("Unable to read " + propertiesFileName, ioe);
} finally {
if (in != null) {
try {
in.close();
} catch (final IOException ioe) {
LOGGER.error("Unable to close " + propertiesFileName, ioe);
}
}
}
this.props = properties;
}


public String getStringProperty(final String name) {
return props.getProperty(name);
}


public int getIntegerProperty(final String name, final int defaultValue) {
String prop = props.getProperty(name);
if (prop != null) {
try {
return Integer.parseInt(prop);
} catch (final Exception ignored) {
return defaultValue;
}
}
return defaultValue;
}


public long getLongProperty(final String name, final long defaultValue) {
String prop = props.getProperty(name);
if (prop != null) {
try {
return Long.parseLong(prop);
} catch (final Exception ignored) {
return defaultValue;
}
}
return defaultValue;
}


public float getFloatProperty(final String name,final float defaultValue)
{
String prop = props.getProperty(name);
if (prop != null) {
try {
return Float.parseFloat(prop);
} catch (final Exception ignored) {
return defaultValue;
}
}
return defaultValue;
}

public String getStringProperty(final String name, final String defaultValue) {
final String prop = getStringProperty(name);
return (prop == null) ? defaultValue : prop;
}


public boolean getBooleanProperty(final String name) {
return getBooleanProperty(name, false);
}


public boolean getBooleanProperty(final String name, final boolean defaultValue) {
final String prop = getStringProperty(name);
return (prop == null) ? defaultValue : "true".equalsIgnoreCase(prop);
}

public Set<Object> keySet()
{
return props.keySet();
}

public Collection<Object> values()
{
return props.values();
}
/*
*private final static Logger LOGGER = Logger.getLogger(PropertiesUtil.class);
private final Properties prop;
private final String fileName;


public PropertiesUtil(String fileName) {
prop = new Properties();
this.fileName = fileName;
InputStreamReader is = null;
try {
is = new InputStreamReader(new FileInputStream(this.getClass().getResource("/").getPath()+fileName), "UTF-8");
prop.load(is);
} catch (FileNotFoundException e) {
LOGGER.error("", e);
} catch (Exception e) {
LOGGER.error("", e);
} finally {
if (is != null) {
try {
is.close();
} catch (IOException e) {
LOGGER.error("", e);
}
}
}
}


public String getValue(String key) {
String value = prop.getProperty(key);
if (value == null) {
throw new IllegalArgumentException("Key: " + key + " IS NOT EXIST IN " + fileName);
}
return value;
}
*/

}

在其他类中调用的方式

private static PropertiesUtil PropertiesUtil = 
new PropertiesUtil("sectionDoubleBase.properties");

//参数为相应的key

public static String getSectionDoubleBase(String type){
String SectionDoubleBase=null;
if(null==SectionDoubleBase){
SectionDoubleBase= PropertiesUtil.getStringProperty(type);
}

return SectionDoubleBase;

}
// 中文字符转换为UTF-8
private static String convertUTF8(String prop)
{
if(!StringUtils.hasText(prop))
{
return null;
}

try {
prop=new String(prop.getBytes("ISO-8859-1"),"UTF-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return prop;
}

//获取所有的值
public static List<String>  getAllSectionDoubleBase(){
//获取key的个数
Set set = PropertiesUtil.keySet();
List<String> list = new ArrayList<String>();
for(int i=0;i<set.size();i++){
list.add(getSectionDoubleBase(String.valueOf(i)));
}
return list;
}