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未捕獲的SyntaxError:意外令牌-JSON字符編碼

[英]Uncaught SyntaxError: Unexpected token - JSON character encoding

在我的控制器中,我使用ajax處理POST請求,並將GET請求中的數據直接添加到js代碼中

mycontroller.php

$sServiceNumber = isset($_POST['ServiceNumber']) ? $_POST['ServiceNumber'] :  $_GET['ServiceNumber'];

//Here I do a db call for sServiceNumber and fetch some data as array $aAllrows

$aResponse['ServiceNumber'] = $sServiceNumber;
$aResponse['Data'] = $aAllrows;
$sJson = json_encode(self::convertToStrictUtf8($aResponse));

if (isset($_POST['ServiceNumber'])) {
    echo $sJson;
    exit;
} else {
    $sJs = '
    $(document).ready(function() {
        var sData = \'' . $sJson . '\';
        handleResponseData(sData);
    });';

    MyHtmlHead::addExtraJsCode($sJs);

    //continue with rendering html page here..
}

當我用ajax調用它時,一切正常,但是當我嘗試直接運行handleResponseData() ,我得到了Uncaught SyntaxError: Unexpected token特殊字符上的Uncaught SyntaxError: Unexpected token

我的JavaScript

function handleResponseData ( rawData ) {
    response = jQuery.parseJSON(rawData);  //<--this is where the error occurs (on GET requests)

    //Make use of response data
}

$("form[name='searchform']").submit(function( event ) {
    event.preventDefault(); 
    // Send post and fetch some data!
    $.post(baseUrl, { ServiceNumber: $("input[name='ServiceNumber']").val(), time: "2pm" }).done(handleResponseData);
});

最后是我的轉換方法

protected static function convertToStrictUtf8 ($p_aValues) {
    function detectEncoding(&$mValue) {
        if (!mb_detect_encoding($mValue, 'UTF-8', true)) {
            $mValue = utf8_encode($mValue);
        }
    }
    array_walk_recursive($p_aValues, 'detectEncoding');

    return $p_aValues;
}

當使用jquery $.post來獲取json字符串時,為什么解析得很好,但是當手動嵌入到代碼中時卻無法解析呢? 我該如何解決這個問題?

編輯 :從console.log(rawData)精簡版本的rawData

得到

{"ServiceNumber":"485218-1138932068","Data":[{"RowId":"AEEA-IU3A61","ServiceRequestId":"AEEA-IU39LX","Name":"SV LIDEHÄLL)","FileSize":"8812","ServiceNumber":"485218-1138932068","Subject":"O(BERGMAN/LIDEHÄLL)
","Area":"svrT","Dir":"1702"}]} 

POST

{"ServiceNumber":"485218-1138932068","Data":[{"RowId":"AEEA-IU3A61","ServiceRequestId":"AEEA-IU39LX","Name":"SV LIDEH\u00c4LL)","FileSize":"8812","ServiceNumber":"485218-1138932068","Subject":"O(BERGMAN\/LIDEH\u00c4LL)\r\n","Area":"svrT","Dir":"1702"}]} 

問題是由Line breaks引起的。

jQuery.parseJSON() docs所述:不允許使用“控制字符”,例如制表符或換行符。

當用$.post調用時,新的行字符被轉換為字符串"\\r\\n" ,這就是這種情況起作用的原因。

添加這樣的東西以刪除新行最終解決了它。

function stripNewLines(&$mValue) {
    if(is_string($mValue)) {
        $mValue = trim(preg_replace('/\s+/', ' ', $mValue));
    }
}
array_walk_recursive($aResponse, 'stripNewLines');

在您的PHP控制器中,在回顯JSON重新放置之前,輸入以下行

header("Content-Type: application/json");

並且在jQuery Ajax調用中,您需要將數據類型提到為JSON

$.ajax({
 ...,
 ...,
 dataType: 'JSON', // it is necessary to get JSON response 
 ...
});

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