使用hessian php与Java通信

小咪咪 2022-09-28 15:24 11阅读 0赞

**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

Php代码

1. include\_once   '../dist/Hessian.php' ;  
2. include\_once   '../dist/HessianClient.php' ;  
3.   
4. Hessian :: mapRemoteType('com.hisupplier.showroom.webservice.QueryParams' ,  'QueryParams' );  
5. Hessian :: mapRemoteType('com.hisupplier.showroom.webservice.ListResult' ,  'ListResult' );  
6. Hessian :: mapRemoteType('com.hisupplier.showroom.entity.Product' ,  'Product' );  
7. Hessian :: mapRemoteType('com.hisupplier.commons.page.Page' ,  'Page' );  
8.   
9. try \{  
10.     $params  =  new  QueryParams(114);  
11.   
12.     $url  =  "http://guiyou.jiaming.com/webService" ;  
13.     $proxy  =  new  HessianClient( $url );  
14.     echo   " " ;  
15.     print\_r($proxy \->hello( $params ));  
16.     echo   " " ;  
17.     print\_r($proxy \->getProduct( $params ));   
18.     echo   " " ;  
19.     print\_r($proxy \->getList( $params ));  //要命的问题出在这里   
20. \} catch (HttpError $ex ) \{  
21.     ...  
22. \}

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 " ";
 print_r($proxy->hello($params));
 echo " ";
 print_r($proxy->getProduct($params)); 
 echo " ";
 print_r($proxy->getList($params)); //要命的问题出在这里
 } catch (HttpError $ex) {
 ...
 }

Java代码

1. public   interface  ShowroomAPI \{  
2.     String hello(QueryParams params);  
3.     ListResult<Product> getList(QueryParams params);  
4.     Product getProduct(QueryParams params);  
5. \}

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

Php代码

1.  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:   
2.  \#0 E:/workspace/php-test/dist/HessianClient.php(215): HessianParser->parseReply()   
3.  \#1 E:/workspace/php-test/dist/Filter.php(159): HessianProxy->executeCall('getList' , Array)   
4.  \#2 E:/workspace/php-test/dist/Filter.php(73): ProxyFilter->execute(Object(HessianProxy), Object(FilterChain))   
5.  \#3 E:/workspace/php-test/dist/Filter.php(191): FilterChain->doFilter(Object(HessianProxy))   
6.  \#4 E:/workspace/php-test/dist/Filter.php(73): PHPErrorReportingFilter->execute(Object(HessianProxy), Object(FilterChain))   
7.  \#5 E:/workspace/php-test/dist/HessianClient.php(182): FilterChain->doFilter(Object(HessianProxy))   
8.  \#6 E:/workspace/php-test/dist/HessianClient5.php(94): HessianProxy->call('getList' , Array)   
9.  \#7 \[internal function \]: HessianClient->\_\_call( 'getList' , Array)   
10. \#8 E:/workspace/php-test/tests/test.php(23): HessianClient->getList(Object(QueryParams))   
11. \#9 \{main\}

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";