使用hessian php与Java通信
去年2009-07-13在百度空间写的一篇hessian的使用总结，今天把它转过来公司因业务需求准备开放一些API接口让代理商使用，周末抽了些时间了解了一下这方面的技术后，决定采用caucho.com的Hessian实现（hessian使用方便又高效）
测试环境
[*]Window XP
[*]JDK 1.6
[*]Resin3.1.9
[*]Spring2.0.8
[*]hessian-3.0.20.jar（这个版本要与spring的对应，不要一味的追求最新版，我因为这个，不知是好还是坏的毛病吃了N多苦头）
[*]HessianPHP-1.0.5-RC2
[*]Apache2.2
[*]PHP5.3.0
刚开始跑Java服务器端和客服端的测试都很顺利，但是当使用php5.3做为客户端访问Java时出现了好几个问题
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)); //要命的问题出在这里
} catch (HttpError $ex) {
...
}
public interface ShowroomAPI {
String hello(QueryParams params);
ListResult<Product> getList(QueryParams params);
Product getProduct(QueryParams params);
}
第1个问题
因为php5.2.x版本后自带了DateTime类，和 HessianPHP 中的发生冲突
解决：改文件DateTime.php 为 HessianDateTime.php，类DateTime 为 HessianDateTime
第2个问题
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
解决：将date() 方法都改为 date_default_timezone_set()
第3个问题
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 : HessianClient->__call('getList', Array)
#8 E:\workspace\php-test\tests\test.php(23): HessianClient->getList(Object(QueryParams))
#9 {main}
google, baidu了半天也没找到相关的文章，后来把apache和php分别降到2.0和5.1还是不行，最后快放弃了试了一下yahoo，哦！my god佛祖保佑阿门，让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.
解决：把Http.php中的1.1改为1.0
在Http.php第200行： $out = "POST $this->url HTTP/1.1\r\n";
原来是因为http/1.1中Transfer-Encoding:chunked编码的包是分段发送的，我最后一个方法$proxy->getList($params) Java服务器端返回的数据量太大了，php这里没接收完整引起的。
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