node-webkit中js连接sqlite3文件型数据库

过去一段时间因为要弄一个有趣的CS架构程序，需要找一个文件型数据库，最后决定用sqlite3数据库。但是js连接sqlite3 数据库伤透了脑筋。使用nodejs连接sqlite数据库但是node的ABI与node-webkit的ABI对不上号，就快在崩溃的边缘时找到了一个比较好的连接sqlite3数据库的工具sql.js。从此变得一发不可收拾。

    sql.js下载地址：https://github.com/kripken/sql.js

    下面是使用sql.js写的一个demo：

    需在页面上导入sql.js

         function test()

        {



            var fs = require("fs");



            //Create the database

            var db = new SQL.Database();

              

            // NOTE: You can also use new sql.Database(data) where

            // data is an Uint8Array representing an SQLite database file



            // Execute some sql

            sqlstr = "CREATE TABLE hello (a int, b char);";

            sqlstr += "INSERT INTO hello VALUES (0, 'hello');"

            sqlstr += "INSERT INTO hello VALUES (1, 'world');"

            db.run(sqlstr); // Run the query without returning anything



            var res = db.exec("SELECT * FROM hello");

            



            // Prepare an sql statement

            var stmt = db.prepare("SELECT * FROM hello WHERE a=:aval AND b=:bval");



            // Bind values to the parameters and fetch the results of the query

            var result = stmt.getAsObject({':aval' : 1, ':bval' : 'world'});

            alert(result); // Will print {a:1, b:'world'}



            // Bind other values

            stmt.bind([0, 'hello']);

            while (stmt.step()) alert(stmt.get()); // Will print [0, 'hello']



            // free the memory used by the statement

            stmt.free();

            // You can not use your statement anymore once it has been freed.

            // But not freeing your statements causes memory leaks. You don't want that.



            // Export the database to an Uint8Array containing the SQLite database file

            var binaryArray = db.export();

            var buffer = new Buffer(binaryArray);

            fs.writeFileSync("filename.sqlite", buffer);

        }

    

     

也可以使用自己新建的sqlite数据库文件
  导入方式：
   var fs =require('fs');
    var filebuffer=fs.readFileSync('test.sqlite');// Load the db
    var db= new  SQL.Database(filebuffer);

    // Exportthe database to an Uint8Array containing the SQLite databasefile
       varbinaryArray = db.export();
       var buffer =new Buffer(binaryArray);
      fs.writeFileSync("test.sqlite", buffer);