playframework结合QRGen在页面生成QR码

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QRGen的使用详见:

http://www.importnew.com/15028.html

 

playframework的安装可以去play的官网:

https://playframework.com/

 

通过activator建立一个play项目

activator new qr_example

 

使用eclipse插件生成eclipse项目 并导入

 

在项目根目录下的build.sbt中增加依赖

 

 "net.glxn.qrgen" % "javase" % "2.0"

完整的如下:

name := """qr_example"""

version := "1.0-SNAPSHOT"

lazy val root = (project in file(".")).enablePlugins(PlayScala)

scalaVersion := "2.11.1"

libraryDependencies ++= Seq(
  jdbc,
  anorm,
  cache,
  ws,
  "net.glxn.qrgen" % "javase" % "2.0"
)

 

更改Application.scala的代码:

package controllers

import net.glxn.qrgen.core.image.ImageType
import net.glxn.qrgen.core.vcard.VCard
import net.glxn.qrgen.javase.QRCode
import play.api.Play.current
import play.api.cache.Cached
import play.api.mvc._

object Application extends Controller {

  def index = Action {
    Ok(views.html.index("Your new application is ready."))
  }

  def qr(word: String) = Cached(word) {
    Action {
      val out = QRCode.from(word).to(ImageType.PNG).stream();
      Ok(out.toByteArray()).as("image/png")
    }
  }

  def myInfoQr = Cached("myInfo") {
    Action {
      val vcard = new VCard("fairjm")
        .setEmail("[email protected]")
        .setWebsite("fair-jm.iteye.com");
      val out = QRCode.from(vcard).to(ImageType.PNG).stream();
      Ok(out.toByteArray()).as("image/png")
    }
  }
}

 

在routes中配置路由:

# Home page
GET   /               controllers.Application.index

GET   /qr/myinfo      controllers.Application.myInfoQr
GET   /qr/:wd         controllers.Application.qr(wd)

# Map static resources from the /public folder to the /assets URL path
GET   /assets/*file   controllers.Assets.at(path="/public", file)

 

更改index.scala.html

@(message: String)

@main("Welcome to Play") {
<p>
	example:
	<img src="@routes.Application.qr("http://fair-jm.iteye.com")" />
</p>
<p>
	myinfo:
	<img src="@routes.Application.myInfoQr" />
</p>
}

 

在命令行使用run 运行 最后效果如下:

 

这样就完成啦 很简单

本文来自: fair-jm.iteye.com 转截请注明出处