Error:(1, 1) java: 非法字符: \65279 最有效解决方法

大家在使用maven或者IDE intellij的时候，可能会碰到类似下面的错误：

maven：

[ERROR] /E:/Workspace/pga/src/main/java/com/huonet/common/search/CriteriaSearchProperties.java:[1,1] E:\Workspace\pga\src\main\java\com\huonet\common\search\CriteriaSearchProperties.java:1: 非法字符： \65279
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

intellij：

Information:Using javac 1.7.0_45 to compile java sources
Information:java: Errors occurred while compiling module 'pga_tour'
Information:2016/9/5 11:46 - Compilation completed with 100 errors and 0 warnings in 8s 228ms
E:\Workspace\pga_tour\src\com\marathon\web\back\SendMailController.java
Error:(1, 1) java: 非法字符: \65279
Error:(1, 10) java: 需要class, interface或enum

以下是以intellij的出错信息为例的解决步骤：

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1、将出错信息复制到EditPlus编辑器，例如intellij的出错信息：

Information:Using javac 1.7.0_45 to compile java sources
Information:java: Errors occurred while compiling module 'pga_tour'
Information:2016/9/5 11:46 - Compilation completed with 100 errors and 0 warnings in 8s 228ms
E:\Workspace\pga_tour\src\com\marathon\web\back\SendMailController.java
Error:(1, 1) java: 非法字符: \65279
Error:(1, 10) java: 需要class, interface或enum
E:\Workspace\pga_tour\src\com\huonet\common\fckeditor\ConnectorServlet.java
Error:(1, 1) java: 非法字符: \65279
Error:(6, 9) java: 需要class, interface或enum

..............................

2、使用快捷键CTRL+H进行全局替换（因为使用的是正则替换，所以需要选中Regular expression）：

例如上面的错误可以使用Find What：Error.+\n 以及 Replace为空进行替换，剩余的一小部分手动删除即可

3、这时候文件里保存内容的就是所有出错文件的路径了，保存为文件存到某目录下。

4、编写java对文件的出错路径进行处理，以下为代码内容

UnicodeReader.java：

import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.PushbackInputStream;import java.io.Reader;/**- changed BOM recognition ordering (longer boms first)网络地址：http://koti.mbnet.fi/akini/java/unicodereader/UnicodeReader.java.txtOriginal pseudocode   : Thomas WeidenfellerImplementation tweaked: Aki Nieminenhttp://www.unicode.org/unicode/faq/utf_bom.htmlBOMs:  00 00 FE FF    = UTF-32, big-endian  FF FE 00 00    = UTF-32, little-endian  EF BB BF       = UTF-8,  FE FF          = UTF-16, big-endian  FF FE          = UTF-16, little-endianWin2k Notepad:  Unicode format = UTF-16LE***//*** Generic unicode textreader, which will use BOM mark* to identify the encoding to be used. If BOM is not found* then use a given default or system encoding.*/public class UnicodeReader extends Reader {  PushbackInputStream internalIn;  InputStreamReader   internalIn2 = null;  String              defaultEnc;  private static final int BOM_SIZE = 4;  /**   *   * @param in  inputstream to be read   * @param defaultEnc default encoding if stream does not have   *                   BOM marker. Give NULL to use system-level default.   */  UnicodeReader(InputStream in, String defaultEnc) {     internalIn = new PushbackInputStream(in, BOM_SIZE);     this.defaultEnc = defaultEnc;  }  public String getDefaultEncoding() {     return defaultEnc;  }  /**   * Get stream encoding or NULL if stream is uninitialized.   * Call init() or read() method to initialize it.   */  public String getEncoding() {     if (internalIn2 == null) return null;     return internalIn2.getEncoding();  }  /**   * Read-ahead four bytes and check for BOM marks. Extra bytes are   * unread back to the stream, only BOM bytes are skipped.   */  protected void init() throws IOException {     if (internalIn2 != null) return;     String encoding;     byte bom[] = new byte[BOM_SIZE];     int n, unread;     n = internalIn.read(bom, 0, bom.length);     if ( (bom[0] == (byte)0x00) && (bom[1] == (byte)0x00) &&                 (bom[2] == (byte)0xFE) && (bom[3] == (byte)0xFF) ) {        encoding = "UTF-32BE";        unread = n - 4;     } else if ( (bom[0] == (byte)0xFF) && (bom[1] == (byte)0xFE) &&                 (bom[2] == (byte)0x00) && (bom[3] == (byte)0x00) ) {        encoding = "UTF-32LE";        unread = n - 4;     } else if (  (bom[0] == (byte)0xEF) && (bom[1] == (byte)0xBB) &&           (bom[2] == (byte)0xBF) ) {        encoding = "UTF-8";        unread = n - 3;     } else if ( (bom[0] == (byte)0xFE) && (bom[1] == (byte)0xFF) ) {        encoding = "UTF-16BE";        unread = n - 2;     } else if ( (bom[0] == (byte)0xFF) && (bom[1] == (byte)0xFE) ) {        encoding = "UTF-16LE";        unread = n - 2;     } else {        // Unicode BOM mark not found, unread all bytes        encoding = defaultEnc;        unread = n;     }      //System.out.println("read=" + n + ", unread=" + unread);     if (unread > 0) internalIn.unread(bom, (n - unread), unread);     // Use given encoding     if (encoding == null) {        internalIn2 = new InputStreamReader(internalIn);     } else {        internalIn2 = new InputStreamReader(internalIn, encoding);     }  }  public void close() throws IOException {     init();     internalIn2.close();  }  public int read(char[] cbuf, int off, int len) throws IOException {     init();     return internalIn2.read(cbuf, off, len);  }}

Test.java：

import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.InputStreamReader;import java.io.OutputStreamWriter;import java.util.ArrayList;import java.util.List;import java.util.regex.Matcher;import java.util.regex.Pattern;public class Test1 {public static void main(String[] args) throws Exception{List<String> pathList = getPerlineFileName("G://test.txt");for(String path : pathList) {readContentAndSaveWithEncoding(path,"UTF-8","UTF-8");}System.out.println("成功");}private static void readContentAndSaveWithEncoding(String filePath,String readEncoding,String saveEncoding) throws Exception{saveContent(filePath,readContent(filePath,readEncoding),saveEncoding);}private static void saveContent(String filePath,String content,String encoding) throws Exception{FileOutputStream fos = new FileOutputStream(filePath);OutputStreamWriter w = new OutputStreamWriter(fos,encoding);w.write(content);w.flush();}private static String readContent(String filePath,String encoding) throws Exception{FileInputStream file = new FileInputStream(new File(filePath));BufferedReader br = new BufferedReader(new UnicodeReader(file, encoding));String line = null;String fileContent = "";while((line = br.readLine()) != null) {fileContent = fileContent + line;fileContent += "\r\n";}return fileContent;}private static List<String> getPerlineFileName(String filePath) throws Exception{FileInputStream file = new FileInputStream(new File(filePath));BufferedReader br = new BufferedReader(new InputStreamReader(file,"UTF-8"));String line = null;List<String> list = new ArrayList<String>();while((line = br.readLine()) != null) {list.add(line);}return list;}}

5、将Test.java中的G://test.txt改为第3步中保存的文件路径及文件名运行即可