node-webkit中js連接sqlite3文件型數據庫

過去一段時間因爲要弄一個有趣的CS架構程序，需要找一個文件型數據庫，最後決定用sqlite3數據庫。但是js連接sqlite3 數據庫傷透了腦筋。使用nodejs連接sqlite數據庫但是node的ABI與node-webkit的ABI對不上號，就快在崩潰的邊緣時找到了一個比較好的連接sqlite3數據庫的工具sql.js。從此變得一發不可收拾。

    sql.js下載地址：https://github.com/kripken/sql.js

    下面是使用sql.js寫的一個demo：

    需在頁面上導入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數據庫文件
  導入方式：
   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);