.ini 形式のプログラム構成ファイルで使用されます。

ファイルを読み取り、キーと値のペアを変更するためのメソッドをインターネットで見つけました。                                                                                                     
                                                                                                                                                                                                                                                                                                                   

package com.sdut.edu.tools;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java. io.ioexception; String getProfileString(

 文字列セクション、
 文字列変数、
 String defaultValue)
 throws IOException {

 String strLine, value = "";
 BufferedReaderbufferedReader = new BufferedReader(new FileReader(file));
 boolean isInSection = false;試してみてください。 //strLine = strLine.split("[;]")[0];
 p;
 マッチャー m;
 p = Pattern.compile("\["+section+"\]");
 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("=");
 if (strArray.length == 1) {
 value = strArray[0 ].trim();
 if (value.equalsIgnoreCase(variable)) {
値 = "";
戻り値;
 }
 } else if (strArray.長さ == 2) {
 値 = strArray[0].trim();
 if (value.equalsIgnoreCase(variable)) {
 value = strArray[1].trim();
戻り値;
 }
 } else if (strArray.長さ＞ 2) {
 value = strArray[0].trim();
 if ( value.equalsIgnoreCase(variable)) {
 value = strLine.substring(strLine.indexOf("=") + 1).trim();
ブレーク;
// }
 }
 }
 }
 } 最後に {
 bufferedReader.close();
 }
 System.out.println("value=====" +value);
戻り値;
}


public static boolean setProfilestring（
文字列セクション、
文字列変数、
文字列値）aoException {
string filecontent、allline、strline、newline、remarkstr; new FileReader(file));
 boolean isInSection = false;
 fileContent = "";
 try {
 while ((allLine =bufferedReader.readLine()) null) {
 allLine = allLine.trim();
/ / System.out.println("allLine == "+allLine);
 strLine = allLine;
 パターン p;
 Matcher m;
 p = Pattern.compile("\["+section+"\]");
 m = p.matcher((strLine));
 if (m.matches()) {
// System.out.println("++++++ ");
 p = Pattern.compile("\[ "+section+"\]");
 m = p.matcher(strLine);
 if (m.matches()) {
// System.out.println("true ");
 isInSection = true;
 } else {
 isInSection = false;
// System.out.println("++++++ ");
 }
 }
 if (isInSection == true) {
 strLine = strLine.trim();
 String[] strArray = strLine.split("=");
 getValue = strArray[0].trim();
 if (getValue.equalsIgnoreCase(variable)) {
 // newLine = getValue + " = " + 値 + " " + reviewStr;
 newLine = getValue + " = " + value + " ";
 fileContent += newLine + "rn";
 while ((allLine =bufferedReader.readLine()) != null) {
 fileContent += allLine + "rn";
 }
 bufferedReader.close();
 BufferedWriterbufferedWriter =
 new BufferedWriter(new FileWriter(file, false));
 bufferedWriter .write(fileContent);
 bufferedWriter.flush();
 bufferedWriter.close();
 trueを返します。
 }
 }
 fileContent += allLine + "rn";
 }catch(IOException ex ){
 throw ex;
 bufferedReader.close();
 return false;
}

}



复制代