用Axis2c 實現一個Web service 的小demo程式過程詳解
阿新 • • 發佈:2019-01-05
/*
* Copyright 2004,2005 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <axiom.h>
#include <axis2_util.h>
#include <axiom_soap.h>
#include <axis2_client.h>
axiom_node_t *
build_om_request(const
axutil_env_t *env);
const
axis2_char_t *
process_om_response(const
axutil_env_t *env,
axiom_node_t *node);
int
main(
int
argc,
char
** argv)
{
const
axutil_env_t *env = NULL;
const
axis2_char_t *address = NULL;
axis2_endpoint_ref_t* endpoint_ref = NULL;
axis2_options_t *options = NULL;
const
axis2_char_t *client_home = NULL;
axis2_svc_client_t* svc_client = NULL;
axiom_node_t *payload = NULL;
axiom_node_t *ret_node = NULL;
//建立 environment . 它是對記憶體分配、
錯誤處理、日誌和執行緒機制的封裝。
env = axutil_env_create_all("hello_client.log"
, AXIS2_LOG_LEVEL_TRACE);
//建立和設定 客戶端 Options。如,服務的端點
地址( the endpoint address of the service)
options = axis2_options_create(env);
address = "http://localhost:9090/axis2/services/hello"
;
if
(argc > 1)
address = argv[1];
if
(axutil_strcmp(address,
"-h"
) == 0)
{
printf("Usage : %s [endpoint_url]/n"
, argv[0]);
printf("use -h for help/n"
);
return
0;
}
printf("Using endpoint : %s/n"
, address);
endpoint_ref = axis2_endpoint_ref_create(env, address);
axis2_options_set_to(options, env, endpoint_ref);
client_home = AXIS2_GETENV("AXIS2C_HOME"
);
if
(!client_home && !strcmp(client_home,
""
))
client_home = "../.."
;
//建立 服務客戶端例項 ,使操作API更加簡單。函式
要輸入一個 Respository Folder 引數,
//該引數相當於 axis2c 工作的目錄
svc_client = axis2_svc_client_create(env, client_home);
if
(!svc_client)
{
printf("Error creating service client/n"
);
AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI, "Stub invoke FAILED: Error code:"
" %d :: %s"
, env->error->error_number,
AXIS2_ERROR_GET_MESSAGE(env->error));
return
-1;
}
axis2_svc_client_set_options(svc_client, env, options);
payload = build_om_request(env);
ret_node = axis2_svc_client_send_receive(svc_client, env, payload);
if
(ret_node)
{
const
axis2_char_t *greeting = process_om_response(env, ret_node);
if
(greeting)
printf("/nReceived greeting: /"%s/" from service/n"
, greeting);
axiom_node_free_tree(ret_node, env);
ret_node = NULL;
}
else
{
AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI, "Stub invoke FAILED: Error code:"
" %d :: %s"
, env->error->error_number,
AXIS2_ERROR_GET_MESSAGE(env->error));
printf("hello client invoke FAILED!/n"
);
}
if
(svc_client)
{
axis2_svc_client_free(svc_client, env);
svc_client = NULL;
}
if
(env)
{
axutil_env_free((axutil_env_t *) env);
env = NULL;
}
return
0;
}
axiom_node_t *
build_om_request(const
axutil_env_t *env)
{
axiom_node_t* greet_om_node = NULL;
axiom_element_t * greet_om_ele = NULL;
greet_om_ele = axiom_element_create(env, NULL, "greet"
, NULL, &greet_om_node);
axiom_element_set_text(greet_om_ele, env, "Hello Server!"
, greet_om_node);
return
greet_om_node;
}
const
axis2_char_t *
process_om_response(const
axutil_env_t *env,
axiom_node_t *node)
{
axiom_node_t *service_greeting_node = NULL;
axiom_node_t *return_node = NULL;
if
(node)
{
service_greeting_node = axiom_node_get_first_child(node, env);
if
(service_greeting_node &&
axiom_node_get_node_type(service_greeting_node, env) == AXIOM_TEXT)
{
axiom_text_t *greeting = (axiom_text_t *)axiom_node_get_data_element(service_greeting_node, env);
if
(greeting && axiom_text_get_value(greeting , env))
{
return
axiom_text_get_value(greeting, env);
}
}
}
return
NULL;
}