1、判断数据库是否打开

	isOpen() {let open = plus.sqlite.isOpenDatabase({name: this.dbName,path: this.dbPath})return open;}

2、创建数据库(有就打开)

openSqlite() {return new Promise((resolve, reject) => {plus.sqlite.openDatabase({name: this.dbName,path: this.dbPath,success(e) {resolve(e); },fail(e) {reject(e);}})})}

3、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);}})})}

4、执行sql

createTable(dbTable, data) {return new Promise((resolve, reject) => {plus.sqlite.executeSql({name: this.dbName,sql: `CREATE TABLE IF NOT EXISTS ${dbTable}(${data})`,success(e) {resolve(e);},fail(e) {reject(e);}})})}