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Java解决Emoji表情符问题

 
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问题描述:客户调用我们的接口报错:

### Cause: java.sql.SQLException: Incorrect string value: '\xF0\x9F\x8F\x80 $...' for column 'content' at row 1

; uncategorized SQLException for SQL []; SQL state [HY000]; error code [1366]; Incorrect string value: '\xF0\x9F\x8F\x80 $...' for column 'content'

 

发现是Emoji表情符编码保存问题。

 

解决方案:

1.  数据存储(MySQL varchar  数据类型对UTF8 支持问题)

    MYSQL 5.5 之前, UTF8 编码只支持1-3个字节, 从MYSQL5.5开始,可支持4个字节UTF编码,但要特殊标记。

 


 

表:

create table ttt(id int not null )  ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

字段:

ALTER TABLE tt2  MODIFY COLUMN `user_name` VARCHAR(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '用户名';

 

参考: http://www.tuicool.com/articles/zAnEV3  

 

这篇文章介绍了怎么修改编码为utf8mb4,

How to support full Unicode in MySQL databases

https://mathiasbynens.be/notes/mysql-utf8mb4

 

2. 过滤或者转义保存

过滤代码:

 

import org.apache.commons.lang.StringUtils;

import java.net.URLEncoder;

/**
 * emoji表情字符检查与过滤工具
 */
public class EmojiFilter {

    public static void main(String[] args) throws Exception {
        byte[] testbytes = {105,111,115,-30,-102,-67,32,36,-18,-128,-104,32,36,-16,-97,-113,-128,32,36,-18,-112,-86};
        String tmpstr = new String(testbytes,"utf-8");
//        System.out.println(URLEncoder.encode(tmpstr, "utf-8"));
        System.out.println(filterEmoji(tmpstr));
//
       
        System.out.println("containsEmoji2: " + containsEmoji("tetete11什么66789@#¥*(&*)*%"));
        System.out.println(containsEmoji(tmpstr));
     

    }


    /**
     * 检测是否有emoji字符
     *
     * @param source
     * @return 一旦含有就抛出
     */
    public static boolean containsEmoji(String source) {
        if (StringUtils.isBlank(source)) {
            return false;
        }
        int len = source.length();
        for (int i = 0; i < len; i++) {
            char codePoint = source.charAt(i);
            if (!isNotEmojiCharacter(codePoint)) {
                //判断到了这里表明,确认有表情字符
                return true;
            }
        }
        return false;
    }

    /**
     * 判断是否为非Emoji字符
     *
     * @param codePoint 比较的单个字符
     * @return
     */
    private static boolean isNotEmojiCharacter(char codePoint) {
        return (codePoint == 0x0) ||
                (codePoint == 0x9) ||
                (codePoint == 0xA) ||
                (codePoint == 0xD) ||
                ((codePoint >= 0x20) && (codePoint <= 0xD7FF)) ||
                ((codePoint >= 0xE000) && (codePoint <= 0xFFFD)) ||
                ((codePoint >= 0x10000) && (codePoint <= 0x10FFFF));
    }

    /**
     * 过滤emoji 或者 其他非文字类型的字符
     *
     * @param source
     * @return
     */
    public static String filterEmoji(String source) {
        if (StringUtils.isBlank(source)) {
            return source;
        }
        if (!containsEmoji(source)) {
            return source;//如果不包含,直接返回
        }
        StringBuilder buf = new StringBuilder();
        int len = source.length();
        for (int i = 0; i < len; i++) {
            char codePoint = source.charAt(i);
            if (isNotEmojiCharacter(codePoint)) {
                buf.append(codePoint);
            }
        }

        return buf.toString().trim();
    }
}

 

 

或者另一个检查方法(参考自http://blog.csdn.net/eabiao/article/details/40653555):

 

import java.util.HashSet;
import java.util.Set;

/**
 * EmojiUtil
 * 
 * @author abiao
 */
public class EmojiUtil {

    private static final char[] EMOJI_SOFTBANK_TABLE = { 0x21d4, 0x25b2, 0x25bc, 0x25cb, 0x25cf, 0x3013, 0xe001,
            0xe002, 0xe003, 0xe004, 0xe005, 0xe006, 0xe007, 0xe008, 0xe009, 0xe00a, 0xe00b, 0xe00c, 0xe00d, 0xe00e,
            0xe00f, 0xe010, 0xe011, 0xe012, 0xe013, 0xe014, 0xe015, 0xe016, 0xe017, 0xe018, 0xe019, 0xe01a, 0xe01b,
            0xe01c, 0xe01d, 0xe01e, 0xe01f, 0xe020, 0xe021, 0xe022, 0xe023, 0xe024, 0xe025, 0xe026, 0xe027, 0xe028,
            0xe029, 0xe02a, 0xe02b, 0xe02c, 0xe02d, 0xe02e, 0xe02f, 0xe030, 0xe031, 0xe032, 0xe033, 0xe034, 0xe035,
            0xe036, 0xe037, 0xe038, 0xe039, 0xe03a, 0xe03b, 0xe03c, 0xe03d, 0xe03e, 0xe03f, 0xe040, 0xe041, 0xe042,
            0xe043, 0xe044, 0xe045, 0xe046, 0xe047, 0xe048, 0xe049, 0xe04a, 0xe04b, 0xe04c, 0xe04d, 0xe04e, 0xe04f,
            0xe050, 0xe051, 0xe052, 0xe053, 0xe054, 0xe055, 0xe056, 0xe057, 0xe058, 0xe059, 0xe05a, 0xe101, 0xe102,
            0xe103, 0xe104, 0xe105, 0xe106, 0xe107, 0xe108, 0xe109, 0xe10a, 0xe10b, 0xe10c, 0xe10d, 0xe10e, 0xe10f,
            0xe110, 0xe111, 0xe112, 0xe113, 0xe114, 0xe115, 0xe116, 0xe117, 0xe118, 0xe119, 0xe11a, 0xe11b, 0xe11c,
            0xe11d, 0xe11e, 0xe11f, 0xe120, 0xe121, 0xe122, 0xe123, 0xe124, 0xe125, 0xe126, 0xe127, 0xe128, 0xe129,
            0xe12a, 0xe12b, 0xe12c, 0xe12d, 0xe12e, 0xe12f, 0xe130, 0xe131, 0xe132, 0xe133, 0xe134, 0xe135, 0xe136,
            0xe137, 0xe138, 0xe139, 0xe13a, 0xe13b, 0xe13c, 0xe13d, 0xe13e, 0xe13f, 0xe140, 0xe141, 0xe142, 0xe143,
            0xe144, 0xe145, 0xe146, 0xe147, 0xe148, 0xe149, 0xe14a, 0xe14b, 0xe14c, 0xe14d, 0xe14e, 0xe14f, 0xe150,
            0xe151, 0xe152, 0xe153, 0xe154, 0xe155, 0xe156, 0xe157, 0xe158, 0xe159, 0xe15a, 0xe201, 0xe202, 0xe203,
            0xe204, 0xe205, 0xe206, 0xe207, 0xe208, 0xe209, 0xe20a, 0xe20b, 0xe20c, 0xe20d, 0xe20e, 0xe20f, 0xe210,
            0xe211, 0xe212, 0xe213, 0xe214, 0xe215, 0xe216, 0xe217, 0xe218, 0xe219, 0xe21a, 0xe21b, 0xe21c, 0xe21d,
            0xe21e, 0xe21f, 0xe220, 0xe221, 0xe222, 0xe223, 0xe224, 0xe225, 0xe226, 0xe227, 0xe228, 0xe229, 0xe22a,
            0xe22b, 0xe22c, 0xe22d, 0xe22e, 0xe22f, 0xe230, 0xe231, 0xe232, 0xe233, 0xe234, 0xe235, 0xe236, 0xe237,
            0xe238, 0xe239, 0xe23a, 0xe23b, 0xe23c, 0xe23d, 0xe23e, 0xe23f, 0xe240, 0xe241, 0xe242, 0xe243, 0xe244,
            0xe245, 0xe246, 0xe247, 0xe248, 0xe249, 0xe24a, 0xe24b, 0xe24c, 0xe24d, 0xe24e, 0xe24f, 0xe250, 0xe251,
            0xe252, 0xe253, 0xe301, 0xe302, 0xe303, 0xe304, 0xe305, 0xe306, 0xe307, 0xe308, 0xe309, 0xe30a, 0xe30b,
            0xe30c, 0xe30d, 0xe30e, 0xe30f, 0xe310, 0xe311, 0xe312, 0xe313, 0xe314, 0xe315, 0xe316, 0xe317, 0xe318,
            0xe319, 0xe31a, 0xe31b, 0xe31c, 0xe31d, 0xe31e, 0xe31f, 0xe320, 0xe321, 0xe322, 0xe323, 0xe324, 0xe325,
            0xe326, 0xe327, 0xe328, 0xe329, 0xe32a, 0xe32b, 0xe32c, 0xe32d, 0xe32e, 0xe32f, 0xe330, 0xe331, 0xe332,
            0xe333, 0xe334, 0xe335, 0xe336, 0xe337, 0xe338, 0xe339, 0xe33a, 0xe33b, 0xe33c, 0xe33d, 0xe33e, 0xe33f,
            0xe340, 0xe341, 0xe342, 0xe343, 0xe344, 0xe345, 0xe346, 0xe347, 0xe348, 0xe349, 0xe34a, 0xe34b, 0xe34c,
            0xe34d, 0xe401, 0xe402, 0xe403, 0xe404, 0xe405, 0xe406, 0xe407, 0xe408, 0xe409, 0xe40a, 0xe40b, 0xe40c,
            0xe40d, 0xe40e, 0xe40f, 0xe410, 0xe411, 0xe412, 0xe413, 0xe414, 0xe415, 0xe416, 0xe417, 0xe418, 0xe419,
            0xe41a, 0xe41b, 0xe41c, 0xe41d, 0xe41e, 0xe41f, 0xe420, 0xe421, 0xe422, 0xe423, 0xe424, 0xe425, 0xe426,
            0xe427, 0xe428, 0xe429, 0xe42a, 0xe42b, 0xe42c, 0xe42d, 0xe42e, 0xe42f, 0xe430, 0xe431, 0xe432, 0xe433,
            0xe434, 0xe435, 0xe436, 0xe437, 0xe438, 0xe439, 0xe43a, 0xe43b, 0xe43c, 0xe43d, 0xe43e, 0xe43f, 0xe440,
            0xe441, 0xe442, 0xe443, 0xe444, 0xe445, 0xe446, 0xe447, 0xe448, 0xe449, 0xe44a, 0xe44b, 0xe44c, 0xe501,
            0xe502, 0xe503, 0xe504, 0xe505, 0xe506, 0xe507, 0xe508, 0xe509, 0xe50b, 0xe50c, 0xe50d, 0xe50e, 0xe50f,
            0xe510, 0xe511, 0xe512, 0xe513, 0xe514, 0xe515, 0xe516, 0xe517, 0xe518, 0xe519, 0xe51a, 0xe51b, 0xe51c,
            0xe51d, 0xe51e, 0xe51f, 0xe520, 0xe521, 0xe522, 0xe523, 0xe524, 0xe525, 0xe526, 0xe527, 0xe528, 0xe529,
            0xe52a, 0xe52b, 0xe52c, 0xe52d, 0xe52e, 0xe52f, 0xe530, 0xe531, 0xe532, 0xe533, 0xe534, 0xe535, 0xe536,
            0xe537, 0xff5e, 0xffe5 };

    private static final Set<Character> EMOJI_SET = new HashSet<Character>();
    static {
        for (int i = 0; i < EMOJI_SOFTBANK_TABLE.length; i++) {
            EMOJI_SET.add(EMOJI_SOFTBANK_TABLE[i]);
        }
    }

    public static boolean isEmoji(char c) {
        return EMOJI_SET.contains(c);
    }

    public static boolean containsEmoji(String s) {
        for (int i = 0; i < s.length(); i++) {
            if (isEmoji(s.charAt(i))) {
                return true;
            }
        }
        return false;
    }
}

 

 

转义代码:

 

import com.sun.org.apache.xml.internal.security.utils.Base64;
import org.apache.commons.lang.StringEscapeUtils;

import java.io.UnsupportedEncodingException;

public class EmojiHandler {

	public static void main(String[] args) throws Exception {
		byte[] testbytes = {105,111,115,-30,-102,-67,32,36,-18,-128,-104,32,36,-16,-97,-113,-128,32,36,-18,-112,-86};
        String tmpstr = new String(testbytes,"utf-8");
        System.out.println(tmpstr);
		
		String encoded = encodeJava(tmpstr);
		System.out.println(encoded);
		System.out.println(decodeJava(encoded));
		
	}

	public static String decodeJava(String text) {
		return StringEscapeUtils.unescapeJava(text);
	}

	public static String encodeJava(String text) {
		return StringEscapeUtils.escapeJava(text);
	}

	public String decodeHtml(String emoji) {
		return StringEscapeUtils.unescapeHtml(emoji);
	}

	public String encodeHtml(String emoji) {
		return StringEscapeUtils.escapeHtml(emoji);
	}

	public String base64Encode(String text) {
		try {
			byte[] data = text.getBytes("UTF-8");
			return Base64.encode(data);
		} catch (UnsupportedEncodingException e) {
			return text;
		}
	}

	public String base64Decode(String text) {
		try {
			byte[] data = Base64.decode(text);
			return new String(data, "UTF-8");
		} catch (Exception e) {
			return text;
		}
	}

	public String encodeToUNICODE(String text) {
		String encoding = "UNICODE";
		try {
			byte[] bytes = (text).getBytes();
			return new String(bytes, encoding);
		} catch (UnsupportedEncodingException e) {
			return text;
		}
	}

	public String encodeToUSASCII(String text) {
		String encoding = "US-ASCII";
		try {
			byte[] bytes = (text).getBytes();
			return new String(bytes, encoding);
		} catch (UnsupportedEncodingException e) {
			return text;
		}
	}

	public String encodeToUTF8(String text) {
		String encoding = "UTF-8";
		try {
			byte[] bytes = (text).getBytes();
			return new String(bytes, encoding);
		} catch (UnsupportedEncodingException e) {
			return text;
		}
	}

	public String encodeToUTF16(String text) {
		String encoding = "UTF-16";
		try {
			byte[] bytes = (text).getBytes();
			return new String(bytes, encoding);
		} catch (UnsupportedEncodingException e) {
			return text;
		}
	}

	public static String toUnicode(char c) {
		return String.format("\\u%04x", (int) c);
	}

}

 

 

参考:

https://github.com/Will5/EMOJITextView

https://github.com/Will5/EMOJITextView/blob/master/EMOJITextView/src/may/will/emojitextview/EmojiHandler.java

http://stackoverflow.com/questions/27334975/how-to-replace-emoji-in-android-softkeyboard

Emoji表情符号兼容方案  http://blog.csdn.net/qdkfriend/article/details/7576524

 

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1 楼 白天看黑夜 2017-10-31  
java过滤emoji字符处理,希望能帮到你
http://www.itmayun.com/it/files/226631678709806/article/406117164733730/1.html

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