{"id":207964,"date":"2025-07-08T12:23:51","date_gmt":"2025-07-08T04:23:51","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207964\/"},"modified":"2025-07-08T12:23:51","modified_gmt":"2025-07-08T04:23:51","slug":"%e8%a1%a8test_db-colors%e4%b8%8d%e5%ad%98%e5%9c%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207964\/","title":{"rendered":"\u8868\u201ctest_db.colors\u201d\u4e0d\u5b58\u5728"},"content":{"rendered":"

<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u8868\u201ctest_db.colors\u201d\u4e0d\u5b58\u5728<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-27 13:18:50<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u5c0f\u4f19\u4f34\u4eec\u6709\u6ca1\u6709\u89c9\u5f97\u5b66\u4e60Golang<\/span>\u5f88\u6709\u610f\u601d\uff1f\u6709\u610f\u601d\u5c31\u5bf9\u4e86\uff01\u4eca\u5929\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765\u300a\u8868\u201ctest_db.colors\u201d\u4e0d\u5b58\u5728\u300b<\/span>\uff0c\u4ee5\u4e0b\u5185\u5bb9\u5c06\u4f1a\u6d89\u53ca\u5230<\/span>\uff0c\u82e5\u662f\u5728\u5b66\u4e60\u4e2d\u5bf9\u5176\u4e2d\u90e8\u5206\u77e5\u8bc6\u70b9\u6709\u7591\u95ee\uff0c\u6216\u8bb8\u770b\u4e86\u672c\u6587\u5c31\u80fd\u5e2e\u5230\u4f60\uff01<\/p>\n

\u95ee\u9898\u5185\u5bb9
\n <\/p>\n

\u6211\u6b63\u5728\u4f7f\u7528 docker\u3001docker-compose\u3001mysql \u548c go \u6784\u5efa\u4e00\u4e2a\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n

\u5f53\u6211\u5c1d\u8bd5\u6d4b\u8bd5\u4e00\u4e2a\u7aef\u70b9\u65f6\uff0c\u51fa\u73b0\u9519\u8bef\u8868\u201ctest_db.colors\u201d\u4e0d\u5b58\u5728<\/strong>\u3002<\/p>\n

\u4f3c\u4e4e sql \u8f6c\u50a8\u672a\u6b63\u786e\u5bfc\u5165\u3002<\/strong><\/p>\n

\u4f46\u662f\u6211\u53ef\u4ee5\u8fde\u63a5\u5230\u6570\u636e\u5e93\uff0c\u81f3\u5c11\u6ca1\u6709\u9519\u8bef\uff0c\u8fd9\u662f\u5728\u540c\u4e00\u4e2a.sql<\/code>\u6587\u4ef6\u4e2d\u521b\u5efa\u7684\u3002<\/p>\n

\u5f53\u6211\u542f\u52a8\u5e94\u7528\u7a0b\u5e8f\u65f6\uff0c\u7ec8\u7aef\u663e\u793a\uff1a<\/p>\n

golang_app         | 2020\/06\/20 21:48:04 docker:docker@tcp(db_mysql:3306)\/test_db\n\ngolang_app         | 2020\/06\/20 21:48:04 db connected<\/pre>\n
\u5411\u7aef\u70b9\u53d1\u51fa\u8bf7\u6c42\u540e\uff0c\u6211\u5f97\u5230\uff1a<\/p>\n
2020\/06\/20 22:05:00 file: handlers.go  function: main.testdbhandler line: 26 error 1146: table 'test_db.colors' doesn't exist<\/pre>\n
\u6587\u4ef6\u7ed3\u6784\u4e3a\uff1a<\/p>\n
.\/\n  |_app\/\n    |_docker-compose.yml\n    |_go\/\n      |_*.go\n      |_dockerfile\n    |_mysql\/\n      |_dockerfile\n      |_.env\n      |_sql-scripts\/\n        |_test.sql<\/pre>\n
\u6587\u4ef6\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n
docker-compose.yml<\/strong><\/p>\n
version: '3'\nservices:\n  fullstack-mysql:\n    container_name: db_mysql\n    build:\n      context: .\/mysql\n    ports:\n      - 3306:3306\n    volumes:\n      - database_mysql:\/var\/lib\/mysql\n      - mysql-log:\/var\/log\/mysql\n      - mysql-conf:\/etc\/mysql\/conf.d\n      - .\/mysql\/sql-scripts:\/docker-entrypoint-initdb.d\n    networks:\n      - fullstack\n\n  app:\n    container_name: golang_app\n    env_file:\n      - .\/go\/.env\n    build:\n      context: .\/go\n    ports:\n      - 9000:9000\n    restart: unless-stopped\n    volumes:\n      - api:\/usr\/src\/app\/\n    depends_on:\n      - fullstack-mysql\n    networks:\n      - fullstack\n\n  phpmyadmin:\n    image: phpmyadmin\/phpmyadmin\n    container_name: phpmyadmin_container\n    depends_on:\n      - fullstack-mysql\n    environment:\n      - pma_host=fullstack-mysql #note the \"mysql\". must be the name of the what you used as the mysql service.\n      - pma_user=root\n      - pma_port=3306\n      - pma_password=root\n      - pma_arbitrary=1\n    ports:\n      - 9095:80\n    restart: always\n    networks:\n      - fullstack\n    links:\n      - fullstack-mysql\n\nvolumes:\n  api:\n  database_mysql:\n  mysql-log:\n    driver: local\n  mysql-conf:\n    driver: local\n\nnetworks:\n  fullstack:\n    driver: bridge<\/pre>\n
\u5e94\u7528\u7a0b\u5e8f\/mysql\/dockerfile<\/strong><\/p>\n
from mysql:8.0\nenv mysql_root_password=$(mysql_root_password)\nenv mysql_password=$(mysql_password)\nenv mysql_user=$(mysql_user)\nenv mysql_database=$(mysql_database)\nenv mysql_port=$(mysql_port)\nenv mysql_driver=$(mysql_driver)\ncopy .\/sql-scripts\/test.sql \/docker-entrypoint-initdb.d\/\nexpose 3306<\/pre>\n
app\/mysql\/.env<\/strong><\/p>\n
mysql_root_password=root\nmysql_password=docker\nmysql_user=docker\nmysql_database=test_db\nmysql_host=127.0.0.1\nmysql_port=3306\nmysql_driver=mysql<\/pre>\n
app\/mysql\/sql-scripts\/test.sql<\/strong><\/p>\n
create database if not exists test_db;\n\ncreate user if not exists 'root'@'%' identified by 'root';\ngrant all privileges on *.* to 'root'@'%' with grant option;\n\ncreate user if not exists 'docker'@'%' identified by 'docker';\ngrant select, insert, update, delete on *.* to 'docker'@'%' with grant option;\n\nflush privileges;\n\nset sql_mode = \"no_auto_value_on_zero\";\nset time_zone = \"+00:00\";\n\ncreate table if not exists `colors` (\n  `id` int(11) not null auto_increment,\n  `name` varchar(20) not null,\n  primary key (`id`),\n  unique key `name` (`name`)\n) engine=innodb  default charset=latin1 auto_increment=1;\n\ninsert into `colors` (`id`, `name`) values\n(2, 'black'),\n(4, 'blue'),\n(5, 'green'),\n(3, 'red'),\n(1, 'white'),\n(6, 'yellow');<\/pre>\n
ma\u200b\u200bin.go<\/strong><\/p>\n
package main\n\nimport (\n    \"database\/sql\"\n    \"log\"\n    \"net\"\n    \"net\/http\"\n    \"os\"\n    \"os\/exec\"\n    \"strconv\"\n    \"strings\"\n\n    _ \"github.com\/go-sql-driver\/mysql\"\n    \"github.com\/jimlawless\/whereami\"\n)\n\nfunc setconfig() {\n    config = configs{}\n    config.cookiename = os.getenv(\"cookie_name\")\n    config.cookievalue = os.getenv(\"cookie_value\")\n    age, err := strconv.atoi(os.getenv(\"cookie_max_age\"))\n    if err != nil {\n        log.println(whereami.whereami(), err.error())\n    }\n    config.cookiemaxage = age\n\n    config.cookiehttponly, err = strconv.parsebool(os.getenv(\"cookie_http_only\"))\n    if err != nil {\n        log.println(whereami.whereami(), err.error())\n    }\n\n    config.cookiepath = os.getenv(\"cookie_path\")\n    config.domain = os.getenv(\"domain\")\n    config.port = os.getenv(\"port\")\n    config.apikey = os.getenv(\"app_key\")\n    config.apiversion = os.getenv(\"api_version\")\n    config.apipath = os.getenv(\"api_path\")\n    config.protocol = os.getenv(\"protocol\")\n    config.mysqldb = os.getenv(\"mysql_database\")\n    config.mysqlhost = os.getenv(\"mysql_host\")\n    config.mysqlpassword = os.getenv(\"mysql_password\")\n    config.mysqlport = os.getenv(\"mysql_port\")\n    config.mysqluser = os.getenv(\"mysql_user\")\n    config.mysqldriver = os.getenv(\"mysql_driver\")\n}\n\nfunc main() {\n    defer recoverpanic()\n    setconfig()\n    err := db()\n    if err != nil {\n        log.fatal(whereami.whereami(), err.error())\n    }\n\n    routes()\n}\n\nfunc (fs filesystem) open(path string) (http.file, error) {\n    f, err := fs.fs.open(path)\n    if err != nil {\n        return nil, err\n    }\n\n    s, err := f.stat()\n    if s.isdir() {\n        index := strings.trimsuffix(path, \"\/\") + \"\/index.html\"\n        if _, err := fs.fs.open(index); err != nil {\n            return nil, err\n        }\n    }\n\n    return f, nil\n}\n\nfunc db() error {\n    connstr:=config.mysqluser+\":\"+config.mysqlpassword+\"@tcp(\"+config.mysqlhost+\":\"+config.mysqlport+\")\/\"+config.mysqldb\n    log.println(connstr)\n    db, err := sql.open(config.mysqldriver, connstr)\n    if err != nil {\n        log.fatal(whereami.whereami(), err.error())\n    }\n\n    err = db.ping()\n    if err != nil {\n        log.println(\"ping error: \" + err.error())\n    } else {\n        dbx.conn = db\n        log.println(\"db connected\")\n    }\n\n    \/\/log.println(fmt.sprintf(\"%s\", dbx.conn), whereami.whereami())\n    return err\n}\n\nfunc recoverpanic() {\n    if rec := recover(); rec != nil {\n        err := rec.(error)\n        log.println(whereami.whereami(), err.error())\n\n        var l *net.tcplistener\n        file, err := l.file()\n        if err != nil {\n            log.println(whereami.whereami(), err.error())\n        }\n\n        path := os.args\n        args := []string{\"-graceful\"}\n\n        cmd := exec.command(path[0], args...)\n        cmd.stdout = os.stdout\n        cmd.stderr = os.stderr\n        cmd.extrafiles = []*os.file{file}\n\n        err2 := cmd.start()\n        if err2 != nil {\n            log.println(whereami.whereami(), err2.error())\n        } else {\n            log.println(whereami.whereami(), \"restarted...\")\n        }\n    }\n}<\/pre>\n
handlers.go<\/strong><\/p>\n
package main\n\nimport (\n    \"fmt\"\n    \"log\"\n    \"net\/http\"\n\n    \"github.com\/jimlawless\/whereami\"\n)\n\nfunc testDBHandler(w http.ResponseWriter, req *http.Request) {\n    id := 1\n    var name string\n    if err := dbx.conn.QueryRow(\"SELECT name FROM colors WHERE id = ? LIMIT 1\", id).Scan(&name); err != nil {\n        log.Println(whereami.WhereAmI(), err.Error())\n    }\n\n    fmt.Fprintf(w, name)\n}<\/pre>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u9700\u8981\u68c0\u67e5\u7684\u4e00\u4e9b\u4e8b\u9879\uff1a<\/p>\n
    \n
  1. mysql \u5bb9\u5668\u662f\u5426\u8868\u660e\u5b83\u5df2\u6b63\u786e\u542f\u52a8\uff1f<\/li>\n
  2. \u60a8\u7684 mysql \u8bbe\u7f6e\u662f\u5426\u592a\u590d\u6742\uff08\u89c1\u4e0b\u6587\uff09\uff1f<\/li>\n
  3. \u60a8\u662f\u5426\u5c1d\u8bd5\u8fc7\u4f7f\u7528\u5176\u4ed6\u5e94\u7528\u7a0b\u5e8f\uff08\u4f8b\u5982 datagrip \u6216\u5176\u4ed6 mysql \u5ba2\u6237\u7aef\uff1f\uff09\u8fde\u63a5\u5230 mysql \u5b9e\u4f8b\uff1f<\/li>\n
  4. \u5728\u8fde\u63a5\u4e4b\u524d\uff0c\u60a8\u662f\u5426\u786e\u4fdd mysql \u7684\u542f\u52a8\u8fc7\u7a0b\u5b9e\u9645\u4e0a\u5df2\u5b8c\u6210\uff1f depends_on<\/code> \u5728\u8fd9\u91cc\u53ef\u80fd\u65e0\u6cd5\u6b63\u5e38\u5de5\u4f5c\u2014\u2014\u5176\u4ed6\u5e94\u7528\u7a0b\u5e8f\u76f4\u5230 mysql \u542f\u52a8\u540e\u624d\u4f1a\u542f\u52a8\uff0c\u4f46 mysql \u8fd8\u4e0d\u4e00\u5b9a\u88ab\u914d\u7f6e\u2014\u2014\u5373\u4f60\u7684 test.sql \u53ef\u80fd\u8fd8\u6ca1\u6709\u771f\u6b63\u8fd0\u884c\u3002<\/li>\n<\/ol>\n
    \u4f60\u7684mysql\u8bbe\u7f6e\u770b\u8d77\u6765\u6709\u4e9b\u590d\u6742\u3002\u6709\u5fc5\u8981\u5417\uff1f\u6211\u4f7f\u7528\u4e86\u4e00\u7ec4\u7c7b\u4f3c\u7684\u6280\u672f\uff0c\u6211\u7684\u6570\u636e\u5e93 docker compose \u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
    \n  fullstack-mysql:\n    image: mysql:8.0\n    ports:\n      - 3306:3306\n    volumes:\n      - database_mysql:\/var\/lib\/mysql\n      - mysql-log:\/var\/log\/mysql\n      - mysql-conf:\/etc\/mysql\/conf.d\n      - .\/mysql\/sql-scripts:\/docker-entrypoint-initdb.d\n    environment:\n      - mysql_root_password=root\n      - mysql_password=docker\n      - mysql_user=docker\n      - mysql_database=test_db\n      - mysql_host=127.0.0.1\n      - mysql_port=3306\n      - mysql_driver=mysql\n    networks:\n      - fullstack\n\n<\/pre>\n
    \u5047\u8bbe\u60a8\u4e0d\u9700\u8981\u505a\u4efb\u4f55\u590d\u6742\u7684\u4e8b\u60c5\uff0c\u8fd9\u5e94\u8be5\u5220\u9664\u5927\u90e8\u5206 mysql \u6570\u636e\u5e93\u8bbe\u7f6e\u3002 \u6211\u505a\u7684\u552f\u4e00\u4e0d\u540c\u7684\u4e8b\u60c5\u662f\u6620\u5c04\u5355\u4e2a\u542f\u52a8\u811a\u672c\uff0c\u800c\u4e0d\u662f\u6574\u4e2a\u76ee\u5f55 – \u5373<\/p>\n
    volumes:\n  .\/MySQL\/sql-scripts\/test.sql:\/docker-entrypoint-initdb.d\/test.sql<\/pre>\n
    \u867d\u7136\u6211\u8ba4\u4e3a\u60a8\u6307\u5b9a\u7684\u6587\u4ef6\u5939\u6620\u5c04\u5e94\u8be5\u53ef\u4ee5\u5de5\u4f5c\u3002\u6211\u521a\u521a\u6ce8\u610f\u5230\u7684\u4e00\u70b9\u662f\uff1a\u5728\u4f60\u7684 mysql dockerfile \u4e2d\uff0c\u4f60\u8fd9\u6837\u505a\uff1a copy .\/sql-scripts\/test.sql \/docker-entrypoint-initdb.d\/<\/code> \u4f46\u8fd9\u5bf9\u4e8e docker-compose \u6587\u4ef6\u6765\u8bf4\u4f3c\u4e4e\u662f\u591a\u4f59\u7684\uff0c\u8be5\u6587\u4ef6\u653e\u7f6e\u4e86\u4e00\u4e2a\u5377\u5728\u540c\u4e00\u4f4d\u7f6e\u3002<\/p>\n
    \u5165\u53e3\u70b9\u4e0a\u7684\u521d\u59cb\u5316\u811a\u672c\u4ec5\u5728\u7b2c\u4e00\u6b21\u521b\u5efa\u6570\u636e\u5e93\u65f6\u8fd0\u884c\uff08\u5373\u5f53\u6587\u4ef6\u5939 \/var\/lib\/mysql \u4e3a\u7a7a\u65f6\uff09<\/p>\n
    \u5220\u9664\u4e3b\u673a\u4e2d\u7684database_mysql\u6587\u4ef6\u5939\u5e76\u8ba9docker-compose\u81ea\u52a8\u91cd\u65b0\u521b\u5efa\u5b83\u3002\u8fd9\u5c06\u5bfc\u81f4\u811a\u672c\u8fd0\u884c\u3002<\/p>\n
    \u8bf7\u6ce8\u610f\uff0c\u5220\u9664\u6587\u4ef6\u5939\u540e\uff0c\u6570\u636e\u5e93\u4e2d\u5b58\u50a8\u7684\u6240\u6709\u6570\u636e\u90fd\u5c06\u4e22\u5931\u3002<\/p>\n
    \u4ee5\u4e0a\u5c31\u662f\u300a\u8868\u201ctest_db.colors\u201d\u4e0d\u5b58\u5728\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8e\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u5f53\u524d\u4f4d\u7f6e\uff1a > > ...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-207964","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207964","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=207964"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207964\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207964"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207964"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207964"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}