黄南州wap网站建设公司,代理ip大全,淘宝电子网站建设论文,元旦ppt模板免费下载数据库请求接口封装 uniapp中提供了plus.sqlite接口#xff0c;在这里我们对常用的数据库请求操作进行了二次封装 这里的dbName、dbPath、recordsTable 可以根据你的需求自己命名 module.exports {/** * type {String} 数据库名称*/dbName: salary,/*** 数据库地址* type {…数据库请求接口封装 uniapp中提供了plus.sqlite接口在这里我们对常用的数据库请求操作进行了二次封装 这里的dbName、dbPath、recordsTable 可以根据你的需求自己命名 module.exports {/** * type {String} 数据库名称*/dbName: salary,/*** 数据库地址* type {String} 推荐以下划线为开头 _doc/xxx.db* description 开发环境中数据库所在地址文件管理/Android/data/io.dcloud.HBuilder/downloads/salary.db* description 打包安装后数据库所在地址文件管理/Android/data/uni.UNI4312312(以UNI开头接数字)/downloads/salary.db*/dbPath: _downloads/salary.db,/*** 加班记录表名* description* time DATE PRIMARY KEY,money INTEGER,notes text,info text*/recordsTable: records,/*** 判断数据库是否打开* returns {Boolean} 打开为 true未打开为 false*/isOpen() {var open plus.sqlite.isOpenDatabase({name: this.dbName,path: this.dbPath})return open;},/*** 打开数据库没有则创建*/openSqlite() {return new Promise((resolve, reject) {plus.sqlite.openDatabase({name: this.dbName,path: this.dbPath,success(e) {resolve(e);},fail(e) {reject(e);}})})},/*** 关闭数据库*/closeSqlite() {return new Promise((resolve, reject) {plus.sqlite.closeDatabase({name: this.dbName,success(e) {resolve(e);},fail(e) {reject(e);}})})},/*** 数据库建表 sql:CREATE TABLE IF NOT EXISTS dbTable(id varchar(50),name TEXT) * 创建 CREATE TABLE IF NOT EXISTS 、 dbTable 是表名不能用数字开头、括号里是表格的表头* param {Object} dbTable 表名* param {Object} data 表列* example 创建表 DB.createTable(表名, 表的列)* let sql date DATE PRIMARY KEY,money INTEGER,notes text,info text;* await DB.createTable(records, sql);*/createTable(dbTable, data) {return new Promise((resolve, reject) {// executeSql: 执行增删改等操作的SQL语句plus.sqlite.executeSql({name: this.dbName,sql: CREATE TABLE IF NOT EXISTS ${dbTable}(${data}),success(e) {resolve(e);},fail(e) {reject(e);}})})},/*** 数据库删表* param {Object} dbTable 表名* description 数据库删表 sql:DROP TABLE dbTable*/dropTable(dbTable) {return new Promise((resolve, reject) {plus.sqlite.executeSql({name: this.dbName,sql: DROP TABLE ${dbTable},success(e) {resolve(e);},fail(e) {reject(e);}})})},// 向表格里添加数据 sql:INSERT INTO dbTable VALUES(x,x,x) 对应新增// 或者 sql:INSERT INTO dbTable (x,x,x) VALUES(x,x,x) 具体新增/*** 向表格里添加数据* param {String} dbTable 表名* param {String} data 列值* param {String} condition 表头列名* example * let sql ${item.money},${item.notes},${item.time};* let condition money,notes,time;* await DB.insertTableData(records, sql, condition);*/insertTableData(dbTable, data, condition) {// 判断有没有传参if (dbTable ! undefined data ! undefined) {// 判断传的参是否有值var bol (JSON.stringify(data) {});if (!bol) {if (condition undefined) {var sql INSERT INTO ${dbTable} VALUES(${data});} else {var sql INSERT INTO ${dbTable} (${condition}) VALUES(${data});}// console.log(sql);return new Promise((resolve, reject) {// 表格添加数据plus.sqlite.executeSql({name: this.dbName,sql: sql,success(e) {resolve(e);},fail(e) {reject(e);}})})} else {return new Promise((resolve, reject) {reject(错误添加)})}} else {return new Promise((resolve, reject) {reject(错误添加)})}},/*** 根据条件向表格里添加数据 有数据更新、无数据插入* (建表时需要设置主键) 例如 --- roomid varchar(50) PRIMARY KEY* param {String} dbTable 表名* param {String} data 列值* param {String} condition 表头列名* example * let sql ${item.money},${item.notes},${item.time};* let condition money,notes,time;* await DB.insertTableData(records, sql, condition);*/insertOrReplaceData(dbTable, data, condition) {// 判断有没有传参if (dbTable ! undefined data ! undefined) {if (condition undefined) {var sql INSERT OR REPLACE INTO ${dbTable} VALUES(${data});} else {var sql INSERT OR REPLACE INTO ${dbTable} (${condition}) VALUES(${data});}// console.log(sql);return new Promise((resolve, reject) {// 表格添加数据plus.sqlite.executeSql({name: this.dbName,sql: sql,success(e) {resolve(e);},fail(e) {reject(e);}})})} else {return new Promise((resolve, reject) {reject(错误添加)})}},/*** 查询获取数据库里的数据 sql:SELECT * FROM dbTable WHERE lname lvalue* param {String} dbTable 表名* param {String} [condition ] 查找条件* example* const searchCondition WHERE date ${day}* await DB.selectTableData(表名, searchCondition);*/selectTableData(dbTable, condition ) {if (dbTable ! undefined) {var sql SELECT * FROM ${dbTable} ${condition};return new Promise((resolve, reject) {// 表格查询数据 执行查询的SQL语句plus.sqlite.selectSql({name: this.dbName,sql: sql,success(e) {resolve(e);},fail(e) {reject(e);}})})} else {return new Promise((resolve, reject) {reject(错误查询)});}},/*** 删除表里的数据 sql:DELETE FROM dbTable WHERE lname lvalue* param {String} dbTable 表名* param {String} [condition ] 查找条件* example* const searchCondition WHERE date ${day}* await DB.deleteTableData(表名, searchCondition);*/deleteTableData(dbTable, condition ) {if (dbTable ! undefined) {var sql DELETE FROM ${dbTable} ${condition};return new Promise((resolve, reject) {// 删除表数据plus.sqlite.executeSql({name: this.dbName,sql: sql,success(e) {resolve(e);},fail(e) {reject(e);}})})} else {return new Promise((resolve, reject) {reject(错误删除)});}},// 修改数据表里的数据 sql:UPDATE dbTable SET 列名 列值,列名 列值 WHERE lname lvalue// 修改 UPDATE 、 dbTable 是表名, data: 要修改的列名修改后列值, lname,lvalue 是查询条件的列名和列值updateTableData(dbTable, data, lname, lvalue) {if (lname undefined) {var sql UPDATE ${dbTable} SET ${data};} else {var sql UPDATE ${dbTable} SET ${data} WHERE ${lname} ${lvalue};}// WHERE 前面是要修改的列名、列值后面是条件的列名、列值return new Promise((resolve, reject) {// 修改表数据plus.sqlite.executeSql({name: this.dbName,sql: sql,success(e) {resolve(e);},fail(e) {reject(e);}})})},// 获取指定数据条数 sql:SELECT * FROM dbTable ORDER BY id DESC LIMIT 15 OFFSET num// dbTable 表名, ORDER BY 代表排序默认正序, id 是排序的条件 DESC 代表倒序从最后一条数据开始拿// LIMIT 15 OFFSET ${num},这句的意思是跳过 num 条拿 15 条数据, num 为跳过多少条数据是动态值// 例 初始num设为0就从最后的数据开始拿15条下次不拿刚获取的数据所以可以让num为15这样就能一步一步的拿完所有的数据pullSQL(dbTable, id, num) {return new Promise((resolve, reject) {plus.sqlite.selectSql({name: this.dbName,sql: SELECT * FROM ${dbTable} ORDER BY ${id} DESC LIMIT 15 OFFSET ${num},success(e) {resolve(e);},fail(e) {reject(e);}})})} }使用案例 这里给了几个简单的案例一通百通 import DB from /api/sqlite;/**添加或者更新加班费主键是日期* param {Object} submitParam 单个日期的加班信息* param {Number} submitParam.money 加班费* param {String} submitParam.notes 备注* param {Date} submitParam.date 加班日期* param {String} submitParam.info 日历日期下面显示内容*/ async function recordSalary(submitParam) {try {// 新增 DB.insertTableData(表名, 对应表头列的数据)let sql ${submitParam.money},${submitParam.notes},${submitParam.date},${submitParam.info};let condition money,notes,date,info;await DB.insertOrReplaceData(DB.recordsTable, sql, condition);return 添加/更新加班费成功;} catch (e) {throw e;} }/**通过年月查询加班费记录* param {String} month 日期* example queryRecordsByMonth(2023-12)*/ async function queryRecordsByMonth(month) {try {const searchCondition WHERE strftime(%Y-%m, date) ${month}const records await DB.selectTableData(DB.recordsTable, searchCondition);return records;} catch (e) {throw e;} }/**通过具体日期查询加班费记录* param {String} day 日期* example queryRecordsByMonth(2023-12-20)*/ async function queryRecordsByDay(day) {try {const searchCondition WHERE date ${day}const records await DB.selectTableData(DB.recordsTable, searchCondition);return records;} catch (e) {throw e;} }/**通过具体日期删除该天的加班记录* param {Object} day 日期* example deleteRecordByDate(2023-12-20)*/ async function deleteRecordByDate(day) {try {const searchCondition WHERE date ${day}const result await DB.deleteTableData(DB.recordsTable, searchCondition);return 删除记录成功;} catch (e) {throw e;} }export default {recordSalary,queryRecordsByMonth,queryRecordsByDay,deleteRecordByDate }查看数据库数据 这里我不知道有没有更好的方法目前我是用真机调试的所以只需要按上述文章所述的目录找到 .db 数据库文件 然后使用数据库连接工具这里使用的是Navicat跟着下述操作即可 这样就可以成功查看啦