本來要試xmlrpc的實作，但是curl一直下載不下來，這又是個重要的套件，就改天再試了。

今晚試Axis2/c:http://axis.apache.org/axis2/c/core/

Axis2 和axis 不一樣，axis 用java/c++實作，而Axis2 是Java/C.

實作soap和rest這兩個web service。
參照安裝說明:http://axis.apache.org/axis2/c/core/docs/installationguide.html

下載:http://apache.cdpa.nsysu.edu.tw//ws/axis2/c/1_6_0/axis2c-src-1.6.0.tar.gz

解壓縮，因為有範例samples，所以先設它的安裝路徑，之後比較好找。

我的安裝路徑是在**/opt/axis2c/**

samples會用到系統路徑變數。

$ AXIS2C_HOME='/opt/axis2c'

$ export AXIS2C_HOME

進入源代碼目錄裏，

./configure 變成

./configure --prefix=${AXIS2C_HOME} --enable-libxml2.1=yes

手冊是寫--enable-libxml2，但是筆者的環境設定會error。

產生

checking pkg-config is at least version 0.9.0... yes
yes
checking for LIBXML2... configure: error: Package requirements (libxml-2.0) were not met:

No package 'libxml-2.0' found

Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.

Alternatively, you may set the environment variables LIBXML2_CFLAGS
and LIBXML2_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.

然後可以make，sudo make install

同理，sample，可按手冊上 設定。

AMQP Transport 不知道是做什麼用的，暫且不看，跳掉。

samples make好了之後，可以試run看看。

一個http 的server端服務 on 起來，會跑出很多訊息，

例如

[Sat Nov 5 06:58:05 2011] [debug] svc_builder.c(318) DLL path is : ..//services/Calculator/libCalculator.so
[Sat Nov 5 06:58:05 2011] [debug] svc_builder.c(318) DLL path is : ..//services/echo/libecho.so
[Sat Nov 5 06:58:05 2011] [debug] svc_builder.c(318) DLL path is : ..//services/math/libmath.so
[Sat Nov 5 06:58:05 2011] [debug] svc_builder.c(318) DLL path is : ..//services/mtom/libmtom.so
[Sat Nov 5 06:58:05 2011] [debug] svc_builder.c(318) DLL path is : ..//services/mtom_callback/libmtom_callback.so
[Sat Nov 5 06:58:05 2011] [debug] svc_builder.c(318) DLL path is : ..//services/notify/libnotify.so
[Sat Nov 5 06:58:05 2011] [debug] svc_builder.c(318) DLL path is : ..//services/sg_math/libadd.so
[Sat Nov 5 06:58:05 2011] [debug] om_element.c(1114) There are no child elements for the node
[Sat Nov 5 06:58:05 2011] [debug] svc_builder.c(318) DLL path is : ..//services/sg_math/libsub.so
[Sat Nov 5 06:58:05 2011] [debug] om_element.c(1114) There are no child elements for the node
[Sat Nov 5 06:58:05 2011] [debug] svc_builder.c(318) DLL path is : ..//services/sg_math/libmul.so
[Sat Nov 5 06:58:05 2011] [debug] om_element.c(1114) There are no child elements for the node
[Sat Nov 5 06:58:05 2011] [debug] svc_builder.c(318) DLL path is : ..//services/sg_math/libdiv.so
[Sat Nov 5 06:58:05 2011] [debug] om_element.c(1114) There are no child elements for the node
[Sat Nov 5 06:58:05 2011] [debug] svc_builder.c(318) DLL path is : ..//services/version/libversion.so
[Sat Nov 5 06:58:05 2011] [debug] phase_holder.c(139) Add handler AddressingInHandler to phase Transport
[Sat Nov 5 06:58:05 2011] [debug] phase_resolver.c(222) svc name is:div
[Sat Nov 5 06:58:05 2011] [debug] phase_resolver.c(139) Service name is : div
[Sat Nov 5 06:58:05 2011] [debug] phase_resolver.c(1123) Operation name is : div

samples 除了手冊上的 echo，math 服務之後，看來還有其他的服務。

而server端服務起來後，開一個shell，進入client 端目錄，
按手冊下指令，

[Sat Nov 5 07:01:37 2011] [debug] phase_holder.c(139) Add handler AddressingOutHandler to phase MessageOut
[Sat Nov 5 07:01:37 2011] [debug] op_client.c(888) Start:axis2_op_client_infer_transport
[Sat Nov 5 07:01:37 2011] [debug] op_client.c(954) End:axis2_op_client_infer_transport
[Sat Nov 5 07:01:37 2011] [debug] http_transport_sender.c(246) ctx_epr:http://localhost:9090/axis2/services/math
[Sat Nov 5 07:01:37 2011] [debug] http_transport_sender.c(805) using axis2 native http sender.
[Sat Nov 5 07:01:37 2011] [debug] http_sender.c(416) msg_ctx_id:urn:uuid:ad61e98e-07b6-1e11-395b-000c2966fa97
[Sat Nov 5 07:01:37 2011] [debug] http_transport_sender.c(822) OP name axutil_qname_get_localpart = http://www.w3.org/2004/08/wsdl/out-in
[Sat Nov 5 07:01:37 2011] [debug] soap_builder.c(945) identified soap version is soap12
[Sat Nov 5 07:01:37 2011] [debug] phase.c(210) Invoke the handler request_uri_based_dispatcher within the phase Transport
[Sat Nov 5 07:01:37 2011] [debug] phase.c(210) Invoke the handler AddressingInHandler within the phase Transport
[Sat Nov 5 07:01:37 2011] [info] Starting addressing in handler
[Sat Nov 5 07:01:37 2011] [debug] phase.c(210) Invoke the handler addressing_based_dispatcher within the phase Transport
[Sat Nov 5 07:01:37 2011] [debug] phase.c(210) Invoke the handler rest_dispatcher within the phase Dispatch
[Sat Nov 5 07:01:37 2011] [debug] phase.c(210) Invoke the handler soap_message_body_based_dispatcher within the phase Dispatch
[Sat Nov 5 07:01:37 2011] [debug] soap_body_disp.c(127) Checking for service using SOAP message body's first child's namespace URI : http://axis2/test/namespace1
[Sat Nov 5 07:01:37 2011] [debug] phase.c(210) Invoke the handler soap_action_based_dispatcher within the phase Dispatch
[Sat Nov 5 07:01:37 2011] [debug] soap_action_disp.c(89) Checking for service using SOAPAction is not implemented
[Sat Nov 5 07:01:37 2011] [debug] phase.c(210) Invoke the handler dispatch_post_conditions_evaluator within the phase PostDispatch
[Sat Nov 5 07:01:37 2011] [debug] phase.c(210) Invoke the handler context_handler within the phase PostDispatch

小結:
axis2/c 這個apache 基金會下的web service專案，

在編譯時，發了很長的時間，感覺是個很龐大的專案。和gsoap2比起來是複雜多了。

但是體現在除錯訊息上，倒是讓人很容易看出，server 啟動時，做了那些事情，client觸發時，

做了那些事情，很值得學習的地方，減少用gdb去trace 程式的時間。

axis2c 除了可以獨立像sample一樣自己完成http server的監聽功能，也可以做成apache或IIS的模組，不用自己一手包，彈性很大。

目前還未自己diy 一個模組，看看會不會比gsoap2 方便。

有rest的支援。
[http://axis.apache.org/axis2/c/core/docs/axis2c_manual.html#rest
](http://axis.apache.org/axis2/c/core/docs/axis2c_manual.html#rest<br />
)