初始化提交

doc/nginx/lua/MySQLOps.lua

@@ -0,0 +1,110 @@
+---
+--- Created by mark.
+--- Desc: 演示对OpenResty中使用Lua对MySQL操作
+--- Note：本Lua脚本借鉴了网络，未经测试，仅供参考，也不提供任何技术支持
+---
+local function close_db(db)
+    if not db then
+        return
+    end
+    db:close()
+end
+
+local mysql = require("resty.mysql")
+
+local db, err = mysql:new()
+if not db then
+    ngx.say("new mysql error : ", err)
+    return
+end
+
+db:set_timeout(1000)
+
+local props = {
+    host = "127.0.0.1",
+    port = 3306,
+    database = "mysql",
+    user = "root",
+    password = "123"
+}
+
+local res, err, errno, sqlstate = db:connect(props)
+
+if not res then
+    ngx.say("connect to mysql error : ", err, " , errno : ", errno, " , sqlstate : ", sqlstate)
+    return close_db(db)
+end
+
+---------------------------------------
+-- 执行SQL语句范例
+
+local create_table_sql = "create table test(id int primary key auto_increment, ch varchar(100))"
+res, err, errno, sqlstate = db:query(create_table_sql)
+if not res then
+    ngx.say("create table error : ", err, " , errno : ", errno, " , sqlstate : ", sqlstate)
+    return close_db(db)
+end
+
+local drop_table_sql = "drop table if exists test"
+res, err, errno, sqlstate = db:query(drop_table_sql)
+if not res then
+    ngx.say("drop table error : ", err, " , errno : ", errno, " , sqlstate : ", sqlstate)
+    return close_db(db)
+end
+
+local insert_sql = "insert into test (ch) values('hello')"
+res, err, errno, sqlstate = db:query(insert_sql)
+if not res then
+    ngx.say("insert error : ", err, " , errno : ", errno, " , sqlstate : ", sqlstate)
+    return close_db(db)
+end
+res, err, errno, sqlstate = db:query(insert_sql)
+ngx.say("insert rows : ", res.affected_rows, " , id : ", res.insert_id, "<br/>")
+
+
+local update_sql = "update test set ch = 'hello2' where id =" .. res.insert_id
+res, err, errno, sqlstate = db:query(update_sql)
+if not res then
+    ngx.say("update error : ", err, " , errno : ", errno, " , sqlstate : ", sqlstate)
+    return close_db(db)
+end
+ngx.say("update rows : ", res.affected_rows, "<br/>")
+
+
+local select_sql = "select id, ch from test"
+res, err, errno, sqlstate = db:query(select_sql)
+if not res then
+    ngx.say("select error : ", err, " , errno : ", errno, " , sqlstate : ", sqlstate)
+    return close_db(db)
+end
+for i, row in ipairs(res) do
+    for name, value in pairs(row) do
+        ngx.say("select row ", i, " : ", name, " = ", value, "<br/>")
+    end
+end
+ngx.say("<br/>")
+
+
+local ch_param = ngx.req.get_uri_args()["ch"] or ''
+local query_sql = "select id, ch from test where ch = " .. ngx.quote_sql_str(ch_param)
+res, err, errno, sqlstate = db:query(query_sql)
+if not res then
+    ngx.say("select error : ", err, " , errno : ", errno, " , sqlstate : ", sqlstate)
+    return close_db(db)
+end
+for i, row in ipairs(res) do
+    for name, value in pairs(row) do
+        ngx.say("select row ", i, " : ", name, " = ", value, "<br/>")
+    end
+end
+
+
+local delete_sql = "delete from test"
+res, err, errno, sqlstate = db:query(delete_sql)
+if not res then
+    ngx.say("delete error : ", err, " , errno : ", errno, " , sqlstate : ", sqlstate)
+    return close_db(db)
+end
+ngx.say("delete rows : ", res.affected_rows, "<br/>")
+
+close_db(db)