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環境：PHP內置XML-RPC的API，apache的XML-RPC的Java API
PHP下的解決方法：
起初以為是中文字符的編碼問題，所以我就嘗試用各種編碼方式來編碼中文字符，然後交給string xmlrpc_encode_request ( string method, mixed params)函數來生成XML格式的請求，可是依然如故。百思不得其界。便操其Google 一通神搜，也沒找到解決辦法，後來我找到了http://XMLrpc-epi.sourceforge.Net/這個網站。才知道，原來PHP文檔裡給的xmlrpc_encode_request ( string method, mixed params)函數少了一個可選參數！！！！正確的應該是這樣的：string XMLrpc_encode_request(string method, mixed params [, array output_options])！！output_options的結構如下：
$output_options = array(
"output_type" => "XML",
"verbosity" => "pretty",
"escaping" => array("markup", "non-ascii", "non-print"),
"version" => "XMLrpc",
"encoding" => "utf-8"
);
or
$output_options = array("output_type" => "PHP");
原文說明如下：
output_type: return data as either php native data types or XML encoded. ifPHP is used, then the other values are ignored. default = XML
verbosity: determine compactness of generated XML. options are no_white_space, newlines_only, and pretty. default = pretty
escaping: determine how/whether to escape certain characters. 1 or more values are allowed. If multiple, they need to be specifIEd as a sub-array. options are: cdata, non-ascii, non-print, and markup.default = non-ascii, non-print, markup
version: version of xml vocabulary to use. currently, three are supported: xmlrpc, soap 1.1, and simple. The keyWord auto is also recognized to mean respond in whichever version the request came in. default = auto (when applicable), XMLrpc
encoding: the encoding that the data is in. Since PHP defaults to iso-8859-1 you will usually want to use that. Change it if you know what you are doing. default=iso-8859-1
經過測試關鍵是在"escaping" => array("markup")這個值上，將第三個參數傳入如下值就可以解決問題了：
$output_options = array(
"output_type" => "XML",
"verbosity" => "pretty",
"escaping" => array("markup"),
"version" => "XMLrpc",
"encoding" => "utf-8"
);
apache Java XML-RPC的解決方法
找遍了apache提供的API好像也沒有找到類似PHP那樣的第三個參數，實在無奈發現他提供了一個Base64的類，我便只好將所有的中文字符在ClIEnt端用 Base64編碼，然後request到Server上，然後在Server端在用Base64解碼，哈哈～～～問題也能解決！不過不知道還有沒別的更好的辦法了?
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