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
 * 作者：FH Admin
 * 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 (isInSection == 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：

<dependency>
    <groupId>org.ini4j</groupId>
    <artifactId>ini4j</artifactId>
    <version>0.5.4</version>
</dependency>

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.ini"));
        // 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<String, String> 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<String> 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.html
http://ini4j.sourceforge.net/tutorial/IniTutorial.java.html

到此这篇关于java 读写 ini 配置文件的文章就介绍到这了,更多相关java 读写 ini文件内容请搜索我们以前的文章或继续浏览下面的相关文章希望大家以后多多支持我们！