公司因業務需求準備開放一些API接口讓代理商使用，週末抽了些時間瞭解了一下這方面的技術後，決定採用caucho.com的Hessian實現（hessian使用方便又高效）
測試環境
Window XP
JDK 1.6
Resin3.1.9
Spring2.0.8
hessian-3.0.20.jar（這個版本要與spring的對應，不要一味的追求最新版，我因爲這個，不知是好還是壞的毛病吃了N多苦頭）
HessianPHP-1.0.5-RC2
Apache2.2
PHP5.3.0
剛開始跑Java服務器端和客服端的測試都很順利，但是當使用php5.3做爲客戶端訪問Java時出現了好幾個問題
Php代碼
include_once '../dist/Hessian.php' ;
include_once '../dist/HessianClient.php' ;
Hessian :: mapRemoteType('com.hisupplier.showroom.webservice.QueryParams' , 'QueryParams' );
Hessian :: mapRemoteType('com.hisupplier.showroom.webservice.ListResult' , 'ListResult' );
Hessian :: mapRemoteType('com.hisupplier.showroom.entity.Product' , 'Product' );
Hessian :: mapRemoteType('com.hisupplier.commons.page.Page' , 'Page' );
try {
$params = new QueryParams(114);
$url = "http://guiyou.jiaming.com/webService" ;
$proxy = new HessianClient( $url );
echo "<br>" ;
print_r($proxy ->hello( $params ));
echo "<br>" ;
print_r($proxy ->getProduct( $params ));
echo "<br>" ;
print_r($proxy ->getList( $params )); //要命的問題出在這裏
} catch (HttpError $ex ) {
...
}
Java代碼
public interface ShowroomAPI {
String hello(QueryParams params);
ListResult<Product> getList(QueryParams params);
Product getProduct(QueryParams params);
}
第1個問題
因爲php5.2.x版本後自帶了DateTime類，和 HessianPHP 中的發生衝突
解決： 改文件DateTime.php 爲 HessianDateTime.php，類DateTime 爲 HessianDateTime
第2個問題
PHP Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'UTC' for '8.0/no DST' instead in G://php//HessianPHP//dist//Hessian.php on line 74
解決： 將date() 方法都改爲 date_default_timezone_set()
第3個問題
Php代碼
Exception: Hessian Parser, Malformed reply: expected r Code: 2 exception 'HessianError' with message 'Hessian Parser, Malformed reply: expected r' in E:/workspace/php-test/dist/Protocol.php:339 Stack trace:
#0 E:/workspace/php-test/dist/HessianClient.php(215): HessianParser->parseReply()
#1 E:/workspace/php-test/dist/Filter.php(159): HessianProxy->executeCall('getList' , Array)
#2 E:/workspace/php-test/dist/Filter.php(73): ProxyFilter->execute(Object(HessianProxy), Object(FilterChain))
#3 E:/workspace/php-test/dist/Filter.php(191): FilterChain->doFilter(Object(HessianProxy))
#4 E:/workspace/php-test/dist/Filter.php(73): PHPErrorReportingFilter->execute(Object(HessianProxy), Object(FilterChain))
#5 E:/workspace/php-test/dist/HessianClient.php(182): FilterChain->doFilter(Object(HessianProxy))
#6 E:/workspace/php-test/dist/HessianClient5.php(94): HessianProxy->call('getList' , Array)
#7 [internal function ]: HessianClient->__call( 'getList' , Array)
#8 E:/workspace/php-test/tests/test.php(23): HessianClient->getList(Object(QueryParams))
#9 {main}
google, baidu了半天也沒找到相關的文章，後來把apache和php分別降到2.0和5.1還是不行，最後快放棄了試了一下yahoo，哦！my god佛祖保佑阿門，讓我找了一了篇文章
引用
Chunked http responses cause a protocol parse error
Http.php is written to perform an HTTP POST using HTTP/1.1 which means that
the Hessian client must support a HTTP header of "Transfer-Encoding:
chunked".
Protocol::parseReply() is written as follows:
if($this->read(1) != 'r') {
return new HessianError('Hessian Parser, Malformed reply: expected
r',HESSIAN_PARSER_ERROR,0,$this->stream);
}
which will fail because the first line of a chunked response will contain
the chunk length. Protocol::parseReply() needs to be written to support
chunking.
At the moment the workaround I have is to set HTTP/1.0 in Http::POST.
解決： 把Http.php中的1.1改爲1.0
在Http.php第200行： $out = "POST $this->url HTTP/1.1/r/n";
第4個問題，由於BOM頭引起，在調用過程中包含的文件有BOM，BOM在調用中先輸出，引起Hessian失敗，對於是UTF8編輯的文件，仔細檢查包含文件中是否有BOM頭的文件。下面有一段去BOM頭的PHP代碼，把這段代碼保存在WEB文件目錄下。直接執行可以查看是否有BOM頭的文件，把$auto = 1; 則會自動刪除BOM頭。
目前最新版本是HessianPHP_v2.0.3， 如果PHP版本是5.3以上最好選擇HessianPHP_v2.0.3版本。
下載地址：http://nchc.dl.sourceforge.net/project/hessianphp/HessianPHP/HessianPHP%202/HessianPHP_v2.0.3.zip
使用教程：http://hessianphp.sourceforge.net/index.php?n=Main.QuickStart