使用hessian php與Java通訊

去年2009-07-13在百度空間寫的一篇hessian的使用總結，今天把它轉過來

公司因業務需求準備開放一些API介面讓代理商使用，周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，我因為這個，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伺服器端和客服端的測試都很順利，但是當使用php5.3做為用戶端訪問Java時出現了好幾個問題

Php代碼

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
     
    "<br>"
    ;  
    
15.     print_r($proxy
    ->hello(
    $params
    ));  
    
16.     echo
     
    "<br>"
    ;  
    
17.     print_r($proxy
    ->getProduct(
    $params
    ));   
    
18.     echo
     
    "<br>"
    ;  
    
19.     print_r($proxy
    ->getList(
    $params
    )); 
    //要命的問題出在這裡
      
    
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 "<br>";    print_r($proxy->hello($params));    echo "<br>";    print_r($proxy->getProduct($params));     echo "<br>";    print_r($proxy->getList($params)); //要命的問題出在這裡} catch (HttpError $ex) {    ...}

 

Java代碼

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個問題

因為php5.2.x版本後內建了DateTime類，和 HessianPHP 中的發生衝突

解決：
改檔案DateTime.php 為 HessianDateTime.php，類DateTime 為 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() 方法都改為 date_default_timezone_set()

第3個問題

Php代碼

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改為1.0

在Http.php第200行： $out = "POST $this->url HTTP/1.1/r/n";