这是我的代码:
testSplice :: C.Splice Handler
testSplice = return $ C.yieldRuntimeText $ do
return "中文"
我将它绑定到标签:
splices :: Splices (C.Splice Handler)
splices =
"testSplice" ## testSplice
并在layout.tpl上使用它:
<meta charset="UTF-8">
<testSplice/>
浏览器上的输出是
-�
我做错了什么?
抱歉延迟了,我已经忙了一段时间了,现在我回来了,我想我可能不会特别提问这个问题@mightybyte 这是问题发生的代码,我希望它会使问题更具说明性:
test.hs:
{-# LANGUAGE OverloadedStrings #-}
import Snap
import Heist
import qualified Heist.Compiled as C
import Data.Monoid
import Control.Monad.Trans.Either
import Data.Maybe
main :: IO ()
main = quickHttpServe site
site :: Snap ()
site =
route [("/", testSnap)]
testSnap :: Snap ()
testSnap = do
hs <- liftIO $ load "template" splices
let runtime = fromJust $ C.renderTemplate hs "test"
builder <-liftIO (fst runtime)
writeBuilder builder
where
splices :: Splices (C.Splice IO)
splices =
"testSplice" ## testSplice
load :: MonadIO n
=> FilePath
-> Splices (C.Splice n)
-> IO (HeistState n)
load baseDir splices = do
tmap <- runEitherT $ do
let t = loadTemplates baseDir
hc = HeistConfig
defaultInterpretedSplices
defaultLoadTimeSplices
splices
mempty
[t]
initHeist hc
either (error . concat) return tmap
testSplice :: C.Splice IO
testSplice = return $ C.yieldRuntimeText $ do return "中文"
模板/ test.tpl
<html>
<head>
<meta charset="UTF-8">
</head>
<body>
<testSplice/>
</body>
</html>
现在我尝试了heist-0.13.0.2,它现在运行正常,干得好!Daniel!
答案 0 :(得分:3)
更新:此答案中描述的问题已在heist
版本 0.13.0.2 中得到纠正。
yieldRuntimeText
的{{3}}是:
yieldRuntimeText :: Monad n => RuntimeSplice n Text -> DList (Chunk n)
yieldRuntimeText = yieldRuntime . liftM fromText
fromText
函数来自哪个模块?在导入部分,我们发现:
import Blaze.ByteString.Builder
import Blaze.ByteString.Builder.Char8
后一个包的source code说:
注意:此程序包用于低级别使用,如实现 协议。如果需要序列化Unicode字符,请使用其中一个 UTF编码(例如'Blaze.ByteString.Builder.Char.UTF-8')。
还有:
fromText :: Text -> BuilderSource
O(n). Serialize the lower 8-bits of all characters in the strict text.
嗯,所以可能问题是从Text到Builder的编码没有在UTF-8中完成?尝试使用完全相同的代码定义您自己的yieldRuntimeText版本,但改为使用以下导入:
import Blaze.ByteString.Builder
import Blaze.ByteString.Builder.Char.Utf8
yieldRuntimeTextUtf8 :: Monad n => RuntimeSplice n Text -> DList (Chunk n)
yieldRuntimeTextUtf8 = yieldRuntime . liftM fromText