{"id":58,"date":"2020-04-12T18:57:34","date_gmt":"2020-04-12T10:57:34","guid":{"rendered":"http:\/\/www.sangco.cn\/?p=58"},"modified":"2020-04-12T18:57:35","modified_gmt":"2020-04-12T10:57:35","slug":"%e6%9b%b4%e6%94%b9mysql%e6%95%b0%e6%8d%ae%e5%ba%93%e7%9a%84%e7%bc%96%e7%a0%81%e4%b8%bautf8mb4","status":"publish","type":"post","link":"https:\/\/www.sangco.cn\/?p=58","title":{"rendered":"\u66f4\u6539MySQL\u6570\u636e\u5e93\u7684\u7f16\u7801\u4e3autf8mb4"},"content":{"rendered":"\n

utf-8\u7f16\u7801\u53ef\u80fd2\u4e2a\u5b57\u8282\u30013\u4e2a\u5b57\u8282\u30014\u4e2a\u5b57\u8282\u7684\u5b57\u7b26\uff0c\u4f46\u662fMySQL<\/a>\u7684utf8\u7f16\u7801\u53ea\u652f\u63013\u5b57\u8282\u7684\u6570\u636e\uff0c\u800c\u79fb\u52a8\u7aef\u7684\u8868\u60c5\u6570\u636e\u662f4\u4e2a\u5b57\u8282\u7684\u5b57\u7b26\u3002\u5982\u679c\u76f4\u63a5\u5f80\u91c7\u7528utf-8\u7f16\u7801\u7684\u6570\u636e\u5e93<\/a>\u4e2d\u63d2\u5165\u8868\u60c5\u6570\u636e\uff0cJava<\/a>\u7a0b\u5e8f\u4e2d\u5c06\u62a5SQL\u5f02\u5e38\uff1a<\/p>\n\n\n\n

java.sql.SQLException: Incorrect string value<\/strong>: \u2018\\xF0\\x9F\\x92\\x94\u2019 for column \u2018name\u2019 at row 1
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1073) 
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3593) 
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3525) 
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1986) 
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2140) 
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2620) 
at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1662) 
at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1581)<\/p><\/blockquote>\n\n\n\n

\u53ef\u4ee5\u5bf94\u5b57\u8282\u7684\u5b57\u7b26\u8fdb\u884c\u7f16\u7801\u5b58\u50a8\uff0c\u7136\u540e\u53d6\u51fa\u6765\u7684\u65f6\u5019\uff0c\u518d\u8fdb\u884c\u89e3\u7801\u3002\u4f46\u662f\u8fd9\u6837\u505a\u4f1a\u4f7f\u5f97\u4efb\u4f55\u4f7f\u7528\u8be5\u5b57\u7b26\u7684\u5730\u65b9\u90fd\u8981\u8fdb\u884c\u7f16\u7801\u4e0e\u89e3\u7801\u3002<\/p>\n\n\n\n

utf8mb4\u7f16\u7801\u662futf8\u7f16\u7801\u7684\u8d85\u96c6\uff0c\u517c\u5bb9utf8\uff0c\u5e76\u4e14\u80fd\u5b58\u50a84\u5b57\u8282\u7684\u8868\u60c5\u5b57\u7b26\u3002 
\u91c7\u7528utf8mb4\u7f16\u7801\u7684\u597d\u5904\u662f\uff1a\u5b58\u50a8\u4e0e\u83b7\u53d6\u6570\u636e\u7684\u65f6\u5019\uff0c\u4e0d\u7528\u518d\u8003\u8651\u8868\u60c5\u5b57\u7b26\u7684\u7f16\u7801\u4e0e\u89e3\u7801\u95ee\u9898\u3002<\/p>\n\n\n\n

\u66f4\u6539\u6570\u636e\u5e93\u7684\u7f16\u7801\u4e3autf8mb4:<\/strong><\/p>\n\n\n\n

1. MySQL\u7684\u7248\u672c<\/h2>\n\n\n\n

utf8mb4\u7684\u6700\u4f4emysql\u7248\u672c\u652f\u6301\u7248\u672c\u4e3a5.5.3+\uff0c\u82e5\u4e0d\u662f\uff0c\u8bf7\u5347\u7ea7\u5230\u8f83\u65b0\u7248\u672c\u3002<\/p>\n\n\n\n

2. MySQL\u9a71\u52a8<\/h2>\n\n\n\n

5.1.34\u53ef\u7528,\u6700\u4f4e\u4e0d\u80fd\u4f4e\u4e8e5.1.13<\/p>\n\n\n\n

3.\u4fee\u6539MySQL\u914d\u7f6e\u6587\u4ef6<\/h2>\n\n\n\n

\u4fee\u6539mysql\u914d\u7f6e\u6587\u4ef6my.cnf\uff08windows\u4e3amy.ini\uff09 
my.cnf\u4e00\u822c\u5728etc\/mysql\/my.cnf\u4f4d\u7f6e\u3002\u627e\u5230\u540e\u8bf7\u5728\u4ee5\u4e0b\u4e09\u90e8\u5206\u91cc\u6dfb\u52a0\u5982\u4e0b\u5185\u5bb9\uff1a 
[client] 
default-character-set = utf8mb4 
[mysql] 
default-character-set = utf8mb4 
[mysqld] 
character-set-client-handshake = FALSE 
character-set-server = utf8mb4 
collation-server = utf8mb4_unicode_ci 
init_connect=’SET NAMES utf8mb4′<\/p>\n\n\n\n

4. \u91cd\u542f\u6570\u636e\u5e93\uff0c\u68c0\u67e5\u53d8\u91cf<\/h2>\n\n\n\n

SHOW VARIABLES WHERE Variable_name LIKE ‘character_set_%’ OR Variable_name LIKE ‘collation%’;<\/p>\n\n\n\n

Variable_name<\/th>Value<\/th><\/tr><\/thead>
character_set_client<\/td>utf8mb4<\/td><\/tr>
character_set_connection<\/td>utf8mb4<\/td><\/tr>
character_set_database<\/td>utf8mb4<\/td><\/tr>
character_set_filesystem<\/td>binary<\/td><\/tr>
character_set_results<\/td>utf8mb4<\/td><\/tr>
character_set_server<\/td>utf8mb4<\/td><\/tr>
character_set_system<\/td>utf8<\/td><\/tr>
collation_connection<\/td>utf8mb4_unicode_ci<\/td><\/tr>
collation_database<\/td>utf8mb4_unicode_ci<\/td><\/tr>
collation_server<\/td>utf8mb4_unicode_ci<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

collation_connection \u3001collation_database \u3001collation_server\u662f\u4ec0\u4e48\u6ca1\u5173\u7cfb\u3002<\/p>\n\n\n\n

\u4f46\u5fc5\u987b\u4fdd\u8bc1<\/p>\n\n\n\n

\u7cfb\u7edf\u53d8\u91cf<\/th>\u63cf\u8ff0<\/th><\/tr><\/thead>
character_set_client<\/td>(\u5ba2\u6237\u7aef\u6765\u6e90\u6570\u636e\u4f7f\u7528\u7684\u5b57\u7b26\u96c6)<\/td><\/tr>
character_set_connection<\/td>(\u8fde\u63a5\u5c42\u5b57\u7b26\u96c6)<\/td><\/tr>
character_set_database<\/td>(\u5f53\u524d\u9009\u4e2d\u6570\u636e\u5e93\u7684\u9ed8\u8ba4\u5b57\u7b26\u96c6)<\/td><\/tr>
character_set_results<\/td>(\u67e5\u8be2\u7ed3\u679c\u5b57\u7b26\u96c6)<\/td><\/tr>
character_set_server<\/td>(\u9ed8\u8ba4\u7684\u5185\u90e8\u64cd\u4f5c\u5b57\u7b26\u96c6)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u8fd9\u51e0\u4e2a\u53d8\u91cf\u5fc5\u987b\u662futf8mb4\u3002<\/p>\n\n\n\n

5. \u6570\u636e\u5e93\u8fde\u63a5\u7684\u914d\u7f6e<\/h2>\n\n\n\n

\u6570\u636e\u5e93\u8fde\u63a5\u53c2\u6570\u4e2d: 
characterEncoding=utf8\u4f1a\u88ab\u81ea\u52a8\u8bc6\u522b\u4e3autf8mb4\uff0c\u4e5f\u53ef\u4ee5\u4e0d\u52a0\u8fd9\u4e2a\u53c2\u6570\uff0c\u4f1a\u81ea\u52a8\u68c0\u6d4b\u3002 
\u800cautoReconnect=true\u662f\u5fc5\u987b\u52a0\u4e0a\u7684\u3002<\/p>\n\n\n\n

6. \u5c06\u6570\u636e\u5e93\u548c\u5df2\u7ecf\u5efa\u597d\u7684\u8868\u4e5f\u8f6c\u6362\u6210utf8mb4<\/h2>\n\n\n\n

\u66f4\u6539\u6570\u636e\u5e93\u7f16\u7801\uff1aALTER DATABASE caitu99 CHARACTER SET utf8mb4<\/code> COLLATE utf8mb4_general_ci<\/code>;<\/p>\n\n\n\n

\u66f4\u6539\u8868\u7f16\u7801\uff1aALTER TABLE TABLE_NAME<\/code> CONVERT TO CHARACTER SET utf8mb4<\/code> COLLATEutf8mb4_general_ci<\/code>; 
\u5982\u6709\u5fc5\u8981\uff0c\u8fd8\u53ef\u4ee5\u66f4\u6539\u5217\u7684\u7f16\u7801<\/p>\n","protected":false},"excerpt":{"rendered":"

utf-8\u7f16\u7801\u53ef\u80fd2\u4e2a\u5b57\u8282\u30013\u4e2a\u5b57\u8282\u30014\u4e2a\u5b57\u8282\u7684\u5b57\u7b26\uff0c\u4f46\u662fMySQL\u7684utf8\u7f16\u7801\u53ea\u652f\u63013\u5b57\u8282\u7684\u6570\u636e\uff0c\u800c\u79fb\u52a8\u7aef\u7684\u8868\u60c5\u6570\u636e\u662f4\u4e2a\u5b57\u8282\u7684\u5b57\u7b26\u3002\u5982\u679c\u76f4\u63a5\u5f80\u91c7\u7528utf-8\u7f16\u7801\u7684\u6570\u636e\u5e93\u4e2d\u63d2\u5165\u8868\u60c5\u6570\u636e\uff0cJava\u7a0b\u5e8f\u4e2d\u5c06\u62a5SQL\u5f02\u5e38\uff1a java.sql….<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"topic":[],"class_list":["post-58","post","type-post","status-publish","format-standard","hentry","category-mysql"],"_links":{"self":[{"href":"https:\/\/www.sangco.cn\/index.php?rest_route=\/wp\/v2\/posts\/58","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sangco.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sangco.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sangco.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sangco.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=58"}],"version-history":[{"count":1,"href":"https:\/\/www.sangco.cn\/index.php?rest_route=\/wp\/v2\/posts\/58\/revisions"}],"predecessor-version":[{"id":59,"href":"https:\/\/www.sangco.cn\/index.php?rest_route=\/wp\/v2\/posts\/58\/revisions\/59"}],"wp:attachment":[{"href":"https:\/\/www.sangco.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=58"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sangco.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=58"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sangco.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=58"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.sangco.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftopic&post=58"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}