新一代网络配置工具iproute—命令篇(上)[转]

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

public final class ConfigUtils {
public static Map<String, String> propMap = null;

/** 初始化 */
public static void init(String path){
propMap = new HashMap<String, String>();
BufferedReader br = null;
try {
br = new BufferedReader(new FileReader(path));
String line = "";
while((line = br.readLine()) != null){
if(line.indexOf("=") != -1 && !line.trim().startsWith("#")
&& !line.trim().startsWith("//")){
String[] lineArr = line.split("=");
propMap.put(lineArr[0].trim(), lineArr[1].trim());
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
br.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}

/**
* 获取所有键值对组成的Map
* @param path 配置文件所在路径
* @return
*/
public static Map<String, String> getPropMap(String path){
//		if(propMap == null || propMap.isEmpty()){
init(path);
//		}

return propMap;
}

/**
* 获取属性值
* @param path 配置文件所在路径
* @param key 属性名
* @return
*/
public static String getPropValue(String path, String key){
//		if(propMap == null || propMap.isEmpty()){
init(path);
//		}

return propMap.get(key);
}

/**
* 设置某个属性的值
* @param path
* @param key
* @param value
*/
public static void setPropValue(String path, String key, String value){
Map<String, String> map = new HashMap<String, String>();
map.put(key, value);
setPropValues(path, map);
}

/**
* 根据Map设置属性
* @param path
* @param map
*/
public static void setPropValues(String path, Map<String, String> map){
BufferedReader br = null;
BufferedWriter bw = null;
try {
br = new BufferedReader(new FileReader(path));

StringBuffer sb = new StringBuffer();
String line = "";
// 读取文件并对替换文件内容
while((line = br.readLine()) != null){
if(line.indexOf("=") != -1 && !line.trim().startsWith("#")
&& !line.trim().startsWith("//")){
String[] lineArr = line.split("=");
String key = lineArr[0].trim();
String newValue = map.get(key);
if(null != newValue && !"".equals(newValue)){
sb.append(key).append(" = ").append(newValue).append("\r\n");
}else{
sb.append(line).append("\r\n");
}
}else{
sb.append(line).append("\r\n");
}
}
br.close();
bw = new BufferedWriter(new FileWriter(path));
// 写入文件
bw.write(sb.toString());
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
br.close();
bw.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}

/** */
/**
* 程序测试
*/
public static void main(String[] args) {

}
}