如何解决Java IO读取文件中文乱码问题

/** * 读取文件内容 * * @param filePathAndName String 读取文件路径 * @return String 文件中的内容 */ public static String readFile(String filePathAndName) { String fileContent = ""; try { File f = new File(filePathAndName); if(f.isFile()&&f.exists()){ InputStreamReader read = new InputStreamReader(new FileInputStream(f),"UTF-8"); BufferedReader reader=new BufferedReader(read); String line; while ((line = reader.readLine()) != null) { fileContent += line; } read.close(); } } catch (Exception e) { System.out.println("读取文件内容操作出错"); e.printStackTrace(); } return fileContent; } 2、JAVA写入文件，避免中文乱码。 /** * 写文件 * * @param filePathAndName String 写文件路径 * @param fileContent String 需要写入的内容 */ public static void writeFile(String filePathAndName, String fileContent) { try { File f = new File(filePathAndName); if (!f.exists()) { f.createNewFile(); } OutputStreamWriter write = new OutputStreamWriter(new FileOutputStream(f),"UTF-8"); BufferedWriter writer=new BufferedWriter(write); //PrintWriter writer = new PrintWriter(new BufferedWriter(new FileWriter(filePathAndName))); //PrintWriter writer = new PrintWriter(new FileWriter(filePathAndName)); writer.write(fileContent); writer.close(); } catch (Exception e) { System.out.println("写文件内容操作出错"); e.printStackTrace(); } }