Java讀取文件，出現中文亂碼，GB2312文件讀取亂碼

讀取編碼爲gb2312格式的文件，出現中文亂碼

普通文件讀取，一般使用FileReader

try (FileReader fileReader = new FileReader(sampleFile);
     BufferedReader br = new BufferedReader(fileReader);) {
    String line = null;
    StringBuilder sb = new StringBuilder();
    while ((line = br.readLine()) != null) {
        sb.append(line);//中文亂碼，文件格式是gb2312
    }
}

　　

 解決方案：

用InputStreamReader包裝一層，並指定字符集

try(FileInputStream fis = new FileInputStream(sampleFile); InputStreamReader isr = new InputStreamReader(fis, "gb2312"); BufferedReader br = new BufferedReader(isr);){ String line = null; StringBuilder sb = new StringBuilder(); while ((line = br.readLine()) != null) { sb.append(line);//不是亂碼 https://www.cnblogs.com/tomcatandjerry } }