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Web_jsx

Web_jsx *.wjsx， *.wjsxh（服務器端JavaScript）Web擴展名處理程序（使用IIS，Apache，nginx運行）

閱讀帖子數據

 let payload = "" ;
context . request . read_payload ( ( buff , len ) => {
	payload += buff ;
} ) ;

或者

 let http_payload = context . request . read_posted_file ( context . request . content_length , context . request . content_type ) ;
if ( http_payload . is_multipart ( ) ) {
    let temp_dir = context . root_dir + "/temp/" ;
    sys . create_directory ( "/temp/" ) ;
    let rs = http_payload . read_all ( temp_dir ) ;
	let count = 1 ;
    context . response . write ( "<ul>" ) ;
	let upload_dir = context . root_dir + "/upload/" ;
    sys . create_directory ( "/upload/" ) ;
    try {
        http_payload . read_files ( ( file ) => {
            try {
                context . response . write ( `<li>SL: ${ count } </li>` ) ;
                context . response . write ( `<li>content_type: ${ file . get_content_type ( ) } </li>` ) ;
                context . response . write ( `<li>name: ${ file . get_name ( ) } </li>` ) ;
                context . response . write ( `<li>file_name: ${ file . get_file_name ( ) } </li>` ) ;
                context . response . write ( `<li>content_disposition: ${ file . get_content_disposition ( ) } </li>` ) ;
                context . response . write ( `<li>file Size: ${ parseFloat ( file . get_file_size ( ) / 1024 ) . toFixed ( 4 ) } Kb</li>` ) ;
                context . response . write ( `<li>Writing file ${ file . get_file_name ( ) } </li>` ) ;
                file . save_as ( ` ${ upload_dir } ${ file . get_file_name ( ) } ` ) ;
            } catch ( e ) {
                context . response . write ( `<li style="color:red;">Error: ${ e . message } </li>` ) ;
            }
            count ++ ;
        } ) ;
    } catch ( e ) {
        context . response . write ( `<li style="color:red;">Error: ${ e . message } </li>` ) ;
    }
    context . response . write ( "</ul>" ) ;
    context . response . write ( `Total ${ rs } file(s) saved...` ) ;
    //Or Save all file to $upload_dir
    http_payload . save_to_file ( upload_dir ) ;
	
} else {
	http_payload . read_line ( ( buff , len ) => {
		context . response . write ( buff ) ;
	} ) ;
}
http_payload . release ( ) ;

將有效載荷寫入文件

 let temp_dir = context . root_dir + "/temp/" ;
sys . create_directory ( "/temp/" ) ;
let c = context . request . write_file_from_payload ( temp_dir ) ;

＃內容編碼GZIP（ZLIB）響應

 context . response . as_gzip ( )

這個Zlib壓縮直接在上游寫

 //If you like to response compressed file
let compress = new zlib . compress ( ) ;
context . response . header ( "Content-Type" , "image/jpeg" ) ;
compress . flush_header ( ) ;
compress . write_from_file ( "/images/web_jsx.jpg" , zlib . Z_FINISH ) ;
compress . flush ( ) ;
//Or If you like to response compressed string
let compress = new zlib . compress ( ) ;
context . response . header ( "Content-Type" , "text/plain" ) ;
compress . flush_header ( ) ;
compress . write ( `Welcome to` , zlib . Z_NO_FLUSH ) ;
compress . write ( `WebJsx` , zlib . Z_NO_FLUSH ) ;
compress . write_from_file ( "context.json" , zlib . Z_NO_FLUSH ) ;
compress . write ( `You should write finsh stream` , zlib . Z_FINISH ) ;
compress . flush ( ) ;

用zlib充氣/放氣文件

 //Compress file with zlib
let ret = zlib . deflate ( "/input.file" , "/output.gzip" , zlib . Z_BEST_SPEED ) ;
//Decompress file with zlib
let ret = zlib . inflate ( "/input.gzip" , "/output_unzip.file" ) ;

直接寫入向上

 let cout = new stdout ( ) ;
context . response . header ( "Content-Type" , "text/plain" ) ;
cout . flush_header ( ) ;
cout . write ( "Hello world...rn" ) ;
//Or you may write file directly outstream
cout . write_from_file ( "context.json" ) ;
cout . flush ( ) ;

將WebJSX與PostgreSQL連接

 //Read data from Postgres SQL
let resp = npgsql . execute_io ( "Server=localhost; Port=5432; UserId=postgres;Password=1##$1@6Z;Database=sow; keepalive=10; CommandTimeout=100000;" , 
	"__sql_execute" , JSON . stringify ( { } ) , JSON . stringify ( {
		"sql" : "select * from jsx.community"
	} )
) ;
__print ( JSON . stringify ( resp ) ) ;
/** read web config module **/
let cfg = require ( "/addon/web.conf.js" ) ;
/** get pgsql addon **/
const { pgSql , npgsql_db_type , npgsql_parameter_direction , npgsql_createParam } = require ( "/addon/pgsql.js" ) ;
/** initialize pgSql instance **/
let _pgsql = new pgSql ( cfg . database . db_conn , JSON . stringify ( { login_id : "system" } ) ) ;

context . response . write ( '<table><tbody>' ) ;
/** Read row(s) from PostgreSQL with plain text quary **/
let res = _pgsql . data_reader ( "select * from auth.login where login_id ={0}" , [ "rajibs" ] , ( i , row ) => {
    let _row = JSON . parse ( row ) ;
    context . response . write ( "<tr>" ) ;
    _row . forEach ( ( val ) => {
        context . response . write ( `<td> ${ val } </td>` ) ;
    } ) ;
    context . response . write ( "</tr>" ) ;
} ) ;
context . response . write ( '</tbody></table>' ) ;

/** Execute INSERT statement and get last sequence number**/
let designation_sid = _pgsql . execute_query ( "INSERT INTO c_type.designation(designation_id, title)VALUES ({0},{1}) returning designation_sid" , [ "NO_ADMIN" , "NO_DSG" ] ) ;

/** Execute DELETE statement**/
_pgsql . execute_query ( "delete from c_type.designation where designation_sid > {0}  and designation_sid not in({1})" , [ 2 , designation_sid ] ) ;

/** Execute SCALAR statement**/
let params = [ ] ;
params . push ( npgsql_createParam ( "ct" , npgsql_db_type . Jsonb , npgsql_parameter_direction . Input , { login_id : "system" } ) ) ;
params . push ( npgsql_createParam ( "obj" , npgsql_db_type . Jsonb , npgsql_parameter_direction . Input , { } ) ) ;
params . push ( npgsql_createParam ( "ret_data_table" , npgsql_db_type . Jsonb , npgsql_parameter_direction . Output ) ) ;
params . push ( npgsql_createParam ( "ret_val" , npgsql_db_type . Bigint , npgsql_parameter_direction . Output ) ) ;
params . push ( npgsql_createParam ( "ret_msg" , npgsql_db_type . Varchar , npgsql_parameter_direction . Output ) ) ;
let res = _pgsql . execute_scalar ( "data_storage.__get__historical_data" , params ) ;
context . response . write ( res . ret_val ) ;
context . response . write ( res . ret_msg ) ;
context . response . write ( JSON . stringify ( res . ret_data_table ) ) ;
//Or Create new Instance and execute multiple quary
let pgsql = new PgSql ( ) ;
//Connect database once and execute multiple quary
pgsql . connect ( cfg . database . db_conn ) ;
//Execute stored procedure
let resp = pgsql . execute_io (
	"aut.user_info" ,
	JSON . stringify ( { } ) ,
	JSON . stringify ( { } )
) ;
//Release all Active Connection and release all resource
pgsql . exit_nicely ( ) ;

將WebJSX與MySQL連接

 let mysql = new MySql ( ) ;
mysql . connect ( {
	host : "localhost" ,
	database : "web_jsx_db" ,
	user : "root" ,
	password : "mysql123" ,
	port : 0
} ) ;
//Drop Database
mysql . exec ( 'DROP DATABASE IF EXISTS web_jsx_db_2' ) ;
//Create Database
mysql . exec ( 'CREATE DATABASE IF NOT EXISTS web_jsx_db_2' ) ;
//Switch Database
mysql . switch_database ( "web_jsx_db_2" ) ;
//Create TABLE
mysql . exec ( 'CREATE TABLE IF NOT EXISTS Persons ( PersonID int,LastName varchar(255),FirstName varchar(255),Address varchar(255), City varchar(255))' ) ;
//Truncate TABLE
mysql . exec ( "truncate table Persons" ) ;
//Execute Insert statement
mysql . exec ( "INSERT INTO Persons (`PersonID`, `LastName`, `FirstName`, `Address`, `City`)VALUES (11, 'Rajib', 'Chy', 'Panchlaish, katalgong', 'Chittagong');" ) ;
//Execute multiple row select statement
mysql . execute_query ( "select * from Persons" , ( i , row ) => {
	print ( row ) ;
} ) ;
//Execute 1 cell select statement
let address = mysql . exec ( 'select Address from Persons limit 1' ) ;
//Release all Active Connection and release all resource
mysql . clear ( ) ;

用#WEB_JSX發送@email 

 /* Import SMTP Addon*/
const { Smtp , MailMessage , mime_type , mime_encoder } = require ( "/addon/smtp.js" ) ;
/* Create SMTP instance*/
let smtp = new Smtp ( "smtp://my_smtp.com" , "smtp_user" , "smtp_password" ) ;
/* If you use CLI, you can enable debug mood*/
smtp . debug ( ) ;
/* You may enable TLS mood */
smtp . enableTls ( ) ;
/* If you enable TLS you need to add CERT */
smtp . cert ( context . server_map_path ( "/mycert.pem" ) ) ;
/* Create MailMessage Instance */
let msg = new MailMessage ( "from@address" , "to@address" ) ;
/* Add your mail subject */
msg . subject ( "Your subject Test mail from web_jsx" ) ;
/* Add your CC, BCC @address. You can add multiple address*/
msg . cc ( "cc@address" ) . bcc ( "bcc@address" ) ;
/* Add your mail body here and can set it body is html */
msg . body ( `@body` , /*is html body*/ false ) ;
/* Add your attachment. you can add multiple attachment here*/
msg . attachment ( {
    name : "test" ,
    path : context . server_map_path ( "test.zip" ) ,
    mime_type : mime_type . application . zip ,
    encoder : mime_encoder . base64
} ) ;
/* Send email here with MailMessage instance */
let rs = smtp . sendMail ( msg ) ;
/* Read your response, whether it was sent or failed..*/
/*{success:true|false, msg: reason}*/
context . response . write ( JSON . stringify ( rs ) ) ;

在#WEB_JSX中使用圖像（支持：.bmp，.png，.jpeg，.jpg，.gif，.gif，.tiff，.tif） 

 function resize_to ( source , dest ) {
    source . lock_bits ( image_mood . READ ) ; dest . lock_bits ( image_mood . WRITE ) ;
    let swidth = source . get_width ( ) ;
    let sheight = source . get_height ( ) ;
    let width = dest . get_width ( ) ;
    let height = dest . get_height ( ) ;
    let scale_width = width / swidth , scale_height = height / sheight ;
    for ( let y = 0 ; y < height ; y ++ ) {
        for ( let x = 0 ; x < width ; x ++ ) {
            let pixel_color = source . get_pixel ( parseInt ( x / scale_width ) , parseInt ( y / scale_height ) ) ;
            dest . set_pixel ( pixel_color , x , y ) ;
        }
    }
    source . unlock_bits ( ) ; dest . unlock_bits ( ) ;
    return ;
}
let full_img = new Image ( ) ;
full_img . load ( ` ${ env . root_dir } test.bmp` ) ;
let width = full_img . get_width ( ) ;
let height = full_img . get_height ( ) ;
let thumb_img = new Image ( ) ;
thumb_img . create_canvas ( width / 2 , height / 2 ) ;
//resize to another Image object
resize_to ( full_img , thumb_img ) ;
//read base64 image data
let base64_data = thumb_img . to_base64 ( image_format . JPEG ) ;
//Create image from base64 encoded image
thumb_img . load_from_base64 ( base64_encoded_character , image_format . JPEG ) ;
//resize same Image object
full_img . resize ( width / 2 , height / 2 ) ;
thumb_img . save ( ` ${ env . root_dir } test_thumb_t.png` ) ; //will be convert png image object
full_img . save ( ` ${ env . root_dir } test_thumb.jpg` ) ; //will be convert jpg image object
//Release all resource of thumb_img
thumb_img . release ( ) ;
//Release all resource of full_img
full_img . release ( ) ;

OpenSSL EVP對稱加密和解密

 let
   key = "usQXLBd+CQptu6eC3xRaFg/P3Yxu3TiRIeImn9ehYSg=" /* base64 key */ ,
   iv = "m4zSTQG1hkTgdH9yk6UW/nQLHobI" /* base64 IV */ ;
//Or you may generate rendom key and iv
const crypto_inf = crypto . generate_key_iv ( ) ;
let plainText = "Hello world" ;
/** Encryption **/
let encText = crypto . encrypt ( plainText , crypto_inf . key , crypto_inf . iv ) ;
context . response . write ( `Encrypted: ${ encText } ` ) ;
//Encrypt file
crypto . encrypt_decrypt_file ( crypto_inf . key , crypto_inf . iv , "plain_source_file" , "encrypted_dest_file" , 1 ) ;

/** Decryption **/
let decText = crypto . decrypt ( enctext , crypto_inf . key , crypto_inf . iv ) ;
context . response . write ( `Decrypted: ${ dectext } ` ) ;
//Decrypt file
crypto . encrypt_decrypt_file ( crypto_inf . key , crypto_inf . iv , "encrypted_source_file" , "decrypted_dest_file" , 0 ) ;

了解更多https://web_jsx.safeonline.world/ and https://www.youtube.com/channel/channel/ucseq3ichpljgfseuinsys_w

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