Java 不支持使用各种语言（包括日语、俄语、西班牙语、法语和意大利语）编写 excel 文件的特殊字符

Question

我正在从 MySQL 中的数据库读取一些信息，我需要将它们写入 excel 文件

XSSFWorkbook workbook =new XSSFWorkbook();
...
cell.setCellValue(addressValue); // suppose addressValue is what I have obtained from mysql
....
try (FileOutputStream outputStream = new FileOutputStream(myfile)) {
    workbook.write(outputStream);   
} 

在MySQL中，table字符集为UTF8，字段被认为是utf8_general_ci。

但是这种方式，它不处理特殊字符。例如，我看到类似 "名古屋市" 的内容，而它应该是 "名古屋市".

或

"Москва" 应该是 "Москва".

或

"St. Honoré" 应该是 "St. Honoré".

Answer 1

感谢 Mark Rotteveel，我在这里分享了解决我问题的代码，也许它也适用于其他人。 link 是： how to unescape XML in java

public static String unescapeXML( final String xml )
{
    Pattern xmlEntityRegex = Pattern.compile( "&(#?)([^;]+);" );
    // Matcher requires a StringBuffer instead of a StringBuilder
    StringBuffer unescapedOutput = new StringBuffer( xml.length() );

    Matcher m = xmlEntityRegex.matcher( xml );
    Map<String,String> builtinEntities = null;
    String entity;
    String hashmark;
    String ent;
    int code;
    while ( m.find() ) {
        ent = m.group(2);
        hashmark = m.group(1);
        if ( (hashmark != null) && (hashmark.length() > 0) ) {
            code = Integer.parseInt( ent );
            entity = Character.toString( (char) code );
        } else {
            //must be a non-numerical entity
            if ( builtinEntities == null ) {
                builtinEntities = buildBuiltinXMLEntityMap();
            }
            entity = builtinEntities.get( ent );
            if ( entity == null ) {
                //not a known entity - ignore it
                entity = "&" + ent + ';';
            }
        }
        m.appendReplacement( unescapedOutput, entity );
    }
    m.appendTail( unescapedOutput );

    return unescapedOutput.toString();
}

private static Map<String,String> buildBuiltinXMLEntityMap()
{
    Map<String,String> entities = new HashMap<String,String>(10);
    entities.put( "lt", "<" );
    entities.put( "gt", ">" );
    entities.put( "amp", "&" );
    entities.put( "apos", "'" );
    entities.put( "quot", "\"" );
    return entities;
}