java 读写 ini 配置文件的示例代码

java 读写 ini 配置文件的示例代码

下面通过代码先看下java 读写 ini 配置文件，代码如下所示：

package org.fh.util;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.net.URLDecoder;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

/**

* 说明：ini文件读写操作工具类

* from：fhadmin.cn

*/

public class IniFileUtil {

/**

* 从ini配置文件中读取变量的值

* @param file 配置文件的路径

* @param section 要获取的变量所在段名称

* @param variable 要获取的变量名称

* @param defaultValue 变量名称不存在时的默认值

* @return 变量的值

* @throws IOException 抛出文件操作可能出现的io异常

*/

public static String readCfgValue(String file, String section, String variable, String defaultValue)

throws IOException {

String strLine, value = "";

BufferedReader bufferedReader = new BufferedReader(new FileReader(URLDecoder.decode(file, "UTF-8"))); //解决中文路径乱码

boolean isInSection = false;

try {

while ((strLine = bufferedReader.readLine()) != null) {

strLine = strLine.trim();

strLine = strLine.split("[;]")[0];

Pattern p;

Matcher m;

p = Pattern.compile("\\[\\w+]");// Pattern.compile("file://[//s*.*//s*//]");

m = p.matcher((strLine));

if (m.matches()) {

p = Pattern.compile("\\[" + section + "\\]");// Pattern.compile("file://[//s*" + section +

// "file://s*//]");

m = p.matcher(strLine);

if (m.matches()) {

isInSection = true;

} else {

isInSection = false;

}

}

if (isInSection == true) {

strLine = strLine.trim();

String[] strArray = strLine.split("=");

if (strArray.length == 1) {

value = strArray[0].trim();

if (value.equalsIgnoreCase(variable)) {

value = "";

return value;

}

} else if (strArray.length == 2) {

value = strArray[0].trim();

if (value.equalsIgnoreCase(variable)) {

value = strArray[1].trim();

return value;

}

} else if (strArray.length > 2) {

value = strArray[0].trim();

if (value.equalsIgnoreCase(variable)) {

value = strLine.substring(strLine.indexOf("=") + 1).trim();

return value;

}

}

}

}

} finally {

bufferedReader.close();

}

return defaultValue;

}

/**

* 修改ini配置文件中变量的值

* @param file 配置文件的路径

* @param section 要修改的变量所在段名称

* @param variable 要修改的变量名称

* @param value 变量的新值

* @throws IOException 抛出文件操作可能出现的io异常

*/

public static boolean writeCfgValue(String file, String section, String variable, String value) throws IOException {

String fileContent, allLine, strLine, newLine;

String getValue = null;

BufferedReader bufferedReader = new BufferedReader(new FileReader(URLDecoder.decode(file, "UTF-8"))); //解决中文路径乱码

boolean isInSection = false;

boolean canAdd = true;

fileContent = "";

try {

while ((allLine = bufferedReader.readLine()) != null) {

allLine = allLine.trim();

strLine = allLine.split(";")[0];

Pattern p;

Matcher m;

p = Pattern.compile("\\[\\w+]");

m = p.matcher((strLine));

if (m.matches()) {

p = Pattern.compile("\\[" + section + "\\]");

m = p.matcher(strLine);

if (m.matches()) {

isInSection = true;

} else {

isInSection = false;

}

}

if (dwowkkYPisInSection == true) {

strLine = strLine.trim();

String[] strArray = strLine.split("=");

getValue = strArray[0].trim();

if (getValue.equalsIgnoreCase(variable)) {

newLine = getValue + "=" + value;

fileContent += newLine;

while ((allLine = bufferedReader.readLine()) != null) {

fileContent += "\r\n" + allLine;

}

bufferedReader.close();

canAdd = false;

BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(file, false));

bufferedWriter.write(fileContent);

bufferedWriter.flush();

bufferedWriter.close();

return true;

}

}

fileContent += allLine + "\r\n";

}

if (canAdd) {

String str = variable + "=" + value;

fileContent += str + "\r\n";

BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(file, false));

bufferedWriter.write(fileContent);

bufferedWriter.flush();

bufferedWriter.close();

}

} catch (IOException ex) {

throw ex;

} finally {

bufferedReader.close();

}

return false;

}

public static void main(String[] args) {

try {

/*;文件事例

[Client]

;客户端版本号

version=0001

;设备号

devNum=6405*/

String value = IniFileUtil.readCfgValue("L:/a.ini", "Client", "devNum", "1");

System.out.println(value);

} catch (IOException e) {

e.printStackTrace();

}

}

}

补充：下面看下java 读取ini配置文件

在maven项目中的pom.xml中配置：

org.ini4j

ini4j

0.5.4

env.ini文件：

[dev]

url="dev-url"

user="dev-user"

password="dev-password"

[testing]

url=""

user=""

password=""

代码：

import org.ini4j.Ini;

import org.ini4j.Profile;

import org.ini4j.Wini;

import java.io.File;

import java.util.Map;

import java.util.Set;

public class IniUtils {

public static void main(String[] args) {

try {

readIni();

}catch (Exception e){

System.out.println(e.getMessage());

}

}

private static void readIni() throws Exception{

Wini ini = new Wini(new File("yourPath/env.dwowkkYPini"));

// read

Ini.Section section = ini.get("dev");

String url = section.get("url");

String user = section.get("user");

String password = section.get("password");

System.out.println(url);

System.out.println(user);

System.out.println(password);

// or just use java.util.Map interface

Map map = ini.get("dev");

String url1 = map.get("url");

String user1 = map.get("user");

String password1 = map.get("password");

System.out.println(url1);

System.out.println(user1);

System.out.println(password1);

// get all section names

// Set sectionNames = ini.keySet();

// for(String sectionName: sectionNames) {

// Profile.Section section1 = ini.get(sectionName);

// }

// write

ini.put("sleepy", "age", 55);

ini.put("sleepy", "weight", 45.6);

ini.store();

}

}

参考：

http://ini4j.sourceforge.net/tutorial/OneMinuteTutorial.java.htmlhttp://ini4j.sourceforge.net/tutorial/IniTutorial.java.html

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