java 解析properties文件 工具类 通用

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Properties;
import java.util.Set;


public class PropertiesUtil {



/**
* 
* 方法: getProperties <br>
* 描述: 更具key获取value <br>
* 作者: 宋学军 [e-mail]<br>
* 时间: 2013-12-6 下午3:13:52 
* @param key
* @return
*/
public static String getProperties(String key) {
Properties prop = new Properties();
InputStream url = PropertiesUtil.class.getResourceAsStream("/conf/deploy.properties");
FileInputStream in = null;
try {
prop.load(url);
} catch (FileNotFoundException e1) {
e1.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally{
if(in != null){
try {
in.close();
in= null;
} catch (IOException e) {
e.printStackTrace();
}
}
}




return (String)prop.get(key);


}

public static String getProperties(String path,String key) {
Properties prop = new Properties();
InputStream url = null;
FileInputStream in = null;
try {
url = new FileInputStream(path);
} catch (FileNotFoundException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}

try {
prop.load(url);
} catch (FileNotFoundException e1) {
e1.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally{
if(in != null){
try {
in.close();
in= null;
} catch (IOException e) {
e.printStackTrace();
}
}
}




return (String)prop.get(key);


}

public static void addProperties(String key,String value){

InputStream url = PropertiesUtil.class.getResourceAsStream("/conf/deploy.properties");
Properties prop = new Properties();
try {
prop.load(url);
} catch (IOException e) {
e.printStackTrace();
}

/*Map toSaveMap = new HashMap();
Set keys = prop.keySet();
for (Iterator itr = keys.iterator(); itr.hasNext();) {
String oldKey = (String) itr.next();
Object oldValue = prop.get(oldKey);
toSaveMap.put(oldKey, oldValue);
}
toSaveMap.put(key,value);  
prop.putAll(toSaveMap);

System.out.println(toSaveMap.toString());*/
prop.put(key, value);

        try  
        {  
            OutputStream outputStream = new FileOutputStream(new File(PropertiesUtil.class.getResource("/conf/deploy.properties").getFile()));  
            prop.store(outputStream, null);
            outputStream.flush();
            outputStream.close();  
            System.out.println("添加成功");
        }  
        catch (IOException e)  
        {  
            e.printStackTrace();  
        }  
}
/**
* 
* 方法: addProperties <br>
* 描述: 设置key，value <br>
* 作者: 宋学军 [e-mail]<br>
* 时间: 2013-12-6 下午3:15:03
* @param key
* @param value
* @throws Exception 
*/
public static void addProperties(String path,String key,String value){
InputStream url = null;
try {
url = new FileInputStream(path);
} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
Properties prop = new Properties();
try {
prop.load(url);
} catch (IOException e) {
e.printStackTrace();
}

Map toSaveMap = new HashMap();
Set keys = prop.keySet();
for (Iterator itr = keys.iterator(); itr.hasNext();) {
String oldKey = (String) itr.next();
Object oldValue = prop.get(oldKey);
toSaveMap.put(oldKey, oldValue);
}
toSaveMap.put(key,value);  
prop.putAll(toSaveMap);

System.out.println(toSaveMap.toString());

        try  
        {  
            OutputStream outputStream = new FileOutputStream(new File(path));  
            prop.store(outputStream, null);
            outputStream.flush();
            outputStream.close();  
            System.out.println("添加成功");
        }  
        catch (IOException e)  
        {  
            e.printStackTrace();  
        }  
}

/**
* 
* 方法: updateProperties <br>
* 描述: 修改 <br>
* 作者: 宋学军 [e-mail]<br>
* 时间: 2013-12-6 下午3:28:29
* @param key
* @param value
*/
public static void updateProperties(String key,String value) {
InputStream url = PropertiesUtil.class.getResourceAsStream("/conf/deploy.properties");
Properties prop = new Properties();
try {
prop.load(url);
} catch (IOException e) {
e.printStackTrace();
}

/*Map toSaveMap = new HashMap();
Set keys = prop.keySet();
for (Iterator itr = keys.iterator(); itr.hasNext();) {
String oldKey = (String) itr.next();
Object oldValue = prop.get(oldKey);
toSaveMap.put(oldKey, oldValue);
}
toSaveMap.put(key,value);  
prop.putAll(toSaveMap);

System.out.println(toSaveMap.toString());*/
prop.put(key, value);

        try  
        {  
            OutputStream outputStream = new FileOutputStream(new File(PropertiesUtil.class.getResource("/conf/deploy.properties").getFile()));  
            prop.store(outputStream, null);
            outputStream.flush();
            outputStream.close();  
            System.out.println("修改成功");
        }  
        catch (IOException e)  
        {  
            e.printStackTrace();  
        }  
}


public static void updateProperties(String path,String key,String value) {
InputStream url = null;
try {
url = new FileInputStream(path);
} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
Properties prop = new Properties();
try {
prop.load(url);
} catch (IOException e) {
e.printStackTrace();
}

/*Map toSaveMap = new HashMap();
Set keys = prop.keySet();
for (Iterator itr = keys.iterator(); itr.hasNext();) {
String oldKey = (String) itr.next();
Object oldValue = prop.get(oldKey);
toSaveMap.put(oldKey, oldValue);
}
toSaveMap.put(key,value);  
prop.putAll(toSaveMap);

System.out.println(toSaveMap.toString());*/
prop.put(key, value);

        try  
        {  
            OutputStream outputStream = new FileOutputStream(new File(path));  
            prop.store(outputStream, null);
            outputStream.flush();
            outputStream.close();  
            System.out.println("修改成功");
        }   
        catch (IOException e)  
        {  
            e.printStackTrace();  
        }  
}

/**
* 
* 方法: delProperties <br>
* 描述: 删除 <br>
* 作者: 宋学军 [e-mail]<br>
* 时间: 2013-12-6 下午9:53:28
* @param key
*/
public void delProperties(String key)
{

//将文件中key，value先拿出来
InputStream url = PropertiesUtil.class.getResourceAsStream("/conf/deploy.properties");
Properties prop = new Properties();
try {
prop.load(url);
} catch (IOException e) {
e.printStackTrace();
}

/*Map toSaveMap = new HashMap();
Set keys = prop.keySet();
for (Iterator itr = keys.iterator(); itr.hasNext();)
{
String oldKey = (String) itr.next();
Object oldValue = prop.get(oldKey);
toSaveMap.put(oldKey, oldValue);
}
prop.clear();
toSaveMap.remove(key);


prop.putAll(toSaveMap);*/
prop.remove(key);


//将所有键值对再写入文件
        try  
        {  
            FileOutputStream outputStream = new FileOutputStream(PropertiesUtil.class.getResource("/conf/deploy.properties").getFile());  
            prop.store(outputStream, null);
            outputStream.flush();
            outputStream.close();  
            System.out.println("删除成功");
        }  
        catch (IOException e)  
        {  
            e.printStackTrace();  
        }  
}


public void delProperties(String path,String key)
{

//将文件中key，value先拿出来
InputStream url = null;
try {
url = new FileInputStream(path);
} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
Properties prop = new Properties();
try {
prop.load(url);
} catch (IOException e) {
e.printStackTrace();
}

/*Map toSaveMap = new HashMap();
Set keys = prop.keySet();
for (Iterator itr = keys.iterator(); itr.hasNext();)
{
String oldKey = (String) itr.next();
Object oldValue = prop.get(oldKey);
toSaveMap.put(oldKey, oldValue);
}
prop.clear();
toSaveMap.remove(key);


prop.putAll(toSaveMap);

System.out.println(toSaveMap.toString());*/
prop.remove(key);

//将所有键值对再写入文件
        try  
        {  
            FileOutputStream outputStream = new FileOutputStream(path);  
            prop.store(outputStream, null);
            outputStream.flush();
            outputStream.close();  
            System.out.println("删除成功");
        }  
        catch (IOException e)  
        {  
            e.printStackTrace();  
        }  
}


}