一个非常好用的Java读写INI配置文件的类

由于一个老项目中需要用Java读写INI配置文件,找了一下,发现“由月”写的类相当的好用,省却了我不少事情,感谢“由月”,下面是代码:



package mytools;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/** */ /**
* 这是个配置文件操作类,用来读取和设置ini配置文件
* @author 由月
* @version 2004-08-18
*/
public final class ConfigurationFile {
/** */ /**
* 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 getProfileString(
String file,
String section,
String variable,
String defaultValue)
throws IOException {
String strLine, value = “” ;
BufferedReader bufferedReader = new BufferedReader( new FileReader(file));
boolean isInSection = false ;
try {
while ((strLine = bufferedReader.readLine()) != null ) {
strLine = strLine.trim();
strLine = strLine.split( ” [;] ” )[ 0 ];
Pattern p;
Matcher m;
p = Pattern.compile( ” file://[//s*.*//s*//] ” );
m = p.matcher((strLine));
if (m.matches()) {
p = 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 setProfileString(
String file,
String section,
String variable,
String value)
throws IOException {
String fileContent, allLine,strLine, newLine, remarkStr;
String getValue;
BufferedReader bufferedReader = new BufferedReader( new FileReader(file));
boolean isInSection = false ;
fileContent = “” ;
try {

while ((allLine = bufferedReader.readLine()) != null ) {
allLine = allLine.trim();
if (allLine.split( ” [;] ” ).length > 1 )
remarkStr = ” ; “ + allLine.split( ” ; ” )[ 1 ];
else
remarkStr = “” ;
strLine = allLine.split( ” ; ” )[ 0 ];
Pattern p;
Matcher m;
p = Pattern.compile( ” file://[//s*.*//s*//] ” );
m = p.matcher((strLine));
if (m.matches()) {
p = 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( ” = ” );
getValue = strArray[ 0 ].trim();
if (getValue.equalsIgnoreCase(variable)) {
newLine = getValue + “ = “ + value + “ “ + remarkStr;
fileContent += newLine + ” \r\n ” ;
while ((allLine = bufferedReader.readLine()) != null ) {
fileContent += allLine + ” \r\n ” ;
}
bufferedReader.close();
BufferedWriter bufferedWriter =
new BufferedWriter( new FileWriter(file, false ));
bufferedWriter.write(fileContent);
bufferedWriter.flush();
bufferedWriter.close();

return true ;
}
}
fileContent += allLine + ” \r\n ” ;
}
} catch (IOException ex) {
throw ex;
} finally {
bufferedReader.close();
}
return false ;
}
/** */ /**
* 程序测试
*/
public static void main(String[] args) {
// String value = Config.getProfileString(”sysconfig.ini”, “Option”, “OracleDB”, “default”);
// System.out.println(value);
try {
System.out.println(ConfigurationFile.setProfileString( ” d:/1.ini ” , ” Settings ” , ” SampSize ” , ” 111 ” ));
} catch (IOException e) {
System.out.println(e.toString());
}

}
}

Leave a Reply

Your email address will not be published. Required fields are marked *