使用jQuery / PHP / AJAX / JSON的Lucene / Solr即时开发
[英]Lucene/Solr Instant Development using jQuery/PHP/AJAX/JSON
问题描述
I am new to UI technologies like JQuery, AJAX, PHP etc. 
我是JQuery，AJAX，PHP等UI技术的新手。
I am building a Google Instant like feature. 我正在建立类似Google Instant的功能。 My search engine infrastructure at backend is pretty fast and returns results even for Tera Bytes of data in super quick time. 我在后端的搜索引擎基础结构非常快，即使在超级快的时间内，即使是太字节数据也能返回结果。
I have a PHP function in a class that returns me an array: 我在类中有一个PHP函数，该函数返回一个数组：
solrsearch.php
class SolrSearch{
...
...
public function find( $q ){
...
...
return $found;
}
}
$found is a key value pair something like documentID=>Data
When I dry run it ie on a console (not on a browser) with a test string and not using $q input variable everything seems to be fine and I print $found and it prints the values. 当我空运行它时，即在带有测试字符串的控制台（而不是在浏览器上）上并且不使用$ q输入变量，一切似乎都很好，我打印了$ found并打印了值。
Now my html file with embedded javascript looks like this, so basically here I am capturing each key press on the textbox and doing a get request 现在我的带有嵌入式javascript的html文件看起来像这样，所以基本上在这里，我捕获了文本框上的每个按键并进行了get请求
testjson.html
<html>
...
<body>
<div align="center"><p><font size = 7 face="Verdana"> Search: <input type="text" id="term" size = 60 style="font-size:22pt"/>
<table id="results">
</table>
<script>
$(document).ready( function() {
$('#term').keyup( function() {
$.get('search_json.php?q='+escape($('#term').val()), function(data) {
html = '<table id="results">';
$.each( data, function( index, val ) {
html += '<tr><td class="document"><b>'+index.key+'</b> ';
html += 'Dated '+val.value+'</td></tr>';
} );
html += '</html>';
$('#results').replaceWith( html );
} );
} );
} );
</script>
...
...
</html>
And then finally here is my 最后是我的
search_json.php
$s = new SolrSearch();
print json_encode( $s->find( $_REQUEST['q'] ) );
Even the json encoded string is working perfectly fine and prints the json though on a console (not on browser) 甚至json编码的字符串也可以正常工作，并且尽管在控制台上（而不是在浏览器上）打印json
Here is the problem I am facing: On the browser when I run testjson.html which just has a textBox and I input some strings so I dont get any results displayed back on the browser. 这是我面临的问题：在浏览器上，当我运行只有一个文本框的testjson.html时，我输入了一些字符串，所以我没有在浏览器上显示任何结果。 When I debug it using Fiddler (HTTP Debugging Proxy) I can see AJAX get requests in that. 当我使用Fiddler（HTTP调试代理）调试它时，我可以看到AJAX获取请求。
Any help would be appreciated. 任何帮助，将不胜感激。 If there is anything else I can add to the question which is required I will be more than happy to do that. 如果还有其他需要补充的问题，我将很乐意这样做。
EDIT: 编辑：
I further debugged and printed $q in the find function in solrsearch.php and it did not print the value that means the value is not getting passed from search_json.php however I can see the GET requests on Fiddler. 我在solrsearch.php的find函数中进一步调试并打印了$ q，它没有打印该值，这意味着该值未从search_json.php传递过来，但是我可以在Fiddler上看到GET请求。
2 个解决方案
解决方案1
0 2012-04-27 11:37:23
I guess that this line: 我猜这行：
-
html += '</html>';
should be 应该
-
html += '</table>';
By the way, instead of using $('#results').replaceWith( html ); 顺便说一句，而不是使用$('#results').replaceWith( html ); try with $('#results').html( html ); 尝试$('#results').html( html );
Edited: Instead of $.get(), try with $.ajax(): 编辑：代替$ .get（），尝试使用$ .ajax（）：
$.ajax({
url: 'search_json.php',
type: 'POST',
data: { q: escape($('#term').val() },
}).done(function(resp) {
//Your html code with response options
});
解决方案2
0 2013-09-11 14:28:23
If your front end uses HTML you definitely have to take a look on AJAX-SOLR 如果您的前端使用HTML，则一定要看一看AJAX-SOLR
AJAX Solr is a JavaScript library for creating user interfaces to Apache Solr AJAX Solr是一个JavaScript库，用于创建指向Apache Solr的用户界面
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