some_material

package com.fw.tools.test; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.File; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; /** * 读取和设置ini配置文件 以“#”号开头的行被认为是注释行 * 对文件写操作时，文件或者section或者Key不存在时，会自动新建 * @author 曾一迅 * @version 1.0 * 下个版本可增加删除section、key操作及得到整个section的所有key及value */ public final class ConfigurationFileIni { /** * 读取ini配置文件中变量的值 * * @param filename * 配置文件的路径 * @param sectionname * 要读取的变量所在段名称 * @param Key * 要读取的变量名称 * @param defaultValue * 变量名不存在时的默认值 * @throws IOException * 抛出文件操作可能出现的io异常 */ public static String getValue(String filename, String sectionname, String Key, String defaultValue) throws IOException { boolean isInSection = false; StringBuffer section = new StringBuffer().append("[").append( sectionname).append("]"); String line, value = defaultValue; BufferedReader reader = new BufferedReader(new FileReader(filename)); try { while ((line = reader.readLine()) != null) { line = line.trim(); if (line.indexOf('#') == 0) continue; line = line.replaceAll("\r", ""); line = line.replaceAll("\n", ""); if (line == "") continue; if ((line.matches("\\[.*\\]")) && (isInSection)) break; if (section.toString().equals(line)) { isInSection = true; continue; } if (line.matches(".*=.*") && (isInSection)) { int i = line.indexOf('='); String name = line.substring(0, i).trim(); if (name.equals(Key)) { value = line.substring(i + 1).trim(); break; } else { continue; } } } } catch (IOException ex) { throw ex; } finally { reader.close(); } return value; } /** * 修改ini配置文件中变量的值 * * @param filename * 配置文件的路径 * @param sectionname * 要修改的变量所在段名称 * @param Key * 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 setValue(String filename, String sectionname, String Key, String value) throws IOException { String line, strLine; StringBuffer allLine = new StringBuffer(); boolean isInSection = false, isHaveKey = false, isModifyOK = false, isFoundSection = false; StringBuffer section = new StringBuffer().append("[").append( sectionname).append("]"); BufferedReader reader; try { reader = new BufferedReader(new FileReader(filename)); } catch (FileNotFoundException e) { File file = new File(filename); if (!file.exists()) { try { file.createNewFile(); } catch (IOException ex) { } } } reader = new BufferedReader(new FileReader(filename)); try { while ((line = reader.readLine()) != null) { line = line.replaceAll("\r", ""); line = line.replaceAll("\n", ""); strLine = line.trim(); if (strLine.indexOf('#') == 0) { allLine.append(line).append("\r\n"); continue; } if (strLine == "") { allLine.append(line).append("\r\n"); continue; } if ((strLine.matches("\\[.*\\]")) && (isInSection)) { if (!isHaveKey) { allLine.append(Key).append("=").append(value).append( "\r\n"); isHaveKey = true; } allLine.append(line).append("\r\n"); isInSection = false; continue; } if (section.toString().equals(strLine)) { isInSection = true; isFoundSection = true; allLine.append(line).append("\r\n"); continue; } if (strLine.matches(".*=.*") && (isInSection)) { int i = strLine.indexOf('='); String name = strLine.substring(0, i).trim(); if (name.equals(Key)) { allLine.append(name).append(" = ").append(value).append( "\r\n"); isHaveKey = true; continue; } } allLine.append(line).append("\r\n"); } if (!isFoundSection) { allLine.append(section.toString()).append("\r\n"); } if (!isHaveKey) { allLine.append(Key).append(" = ").append(value).append("\r\n"); isHaveKey = true; } } catch (IOException ex) { throw ex; } finally { reader.close(); } // 修改完成，开始覆写文件 BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter( filename, false)); try { bufferedWriter.write(allLine.toString()); bufferedWriter.flush(); isModifyOK = true; } catch (IOException ex) { isModifyOK = false; throw ex; } finally { bufferedWriter.close(); } return isModifyOK; } //测试一下 public static void main(String[] args) throws IOException { ConfigurationFileIni.setValue("config/const.ini", "Body01", "Name01","CommandName"); System.out.println(ConfigurationFileIni.getValue("config/const.ini", "Body01", "Name01", null)); } }