在Salesforce中可以创建Web Service供外部系统调用,并且可以以SOAP或者REST方式向外提供调用接口,接下来的内容将详细讲述一下用SOAP的方式创建Web Service并且用Asp.net的程序进行简单的调用。
1):在Salesforce中创建如下Class
【注:要想使其成为web service,那么class一定要定义成global的,具体的方法要用 webService static 修饰】
【代码中省略了GenerateAccountFromXmlInfo方法的具体实现,细节请看:http://www.cnblogs.com/mingmingruyuedlut/p/3497646.html 】
global class SFAccountWebService { webService static string UpsertAccount(String accountXmlInfo) {
Account currentAcc = GenerateAccountFromXmlInfo(accountXmlInfo);
try
{
Account acc = [Select Id From Account a Where AccountNumber =: currentAcc.AccountNumber];
if(acc != null){
currentAcc.Id = acc.Id;
}
upsert currentAcc;
return 'true';
}
catch(exception ex){
return 'false';
}
} private static Account GenerateAccountFromXmlInfo(String accountXmlInfo){
Account currentAcc = new Account();
// Parse the xml info to generate the Account Object
return currentAcc;
} }
2):在保存好上述的class之后,我们到setup --> build --> develop --> apex classes 中找到刚刚保存的class,我们会发现在对应的Action中有WSDL这个选项,此选项就是Salesforce默认所提供的将Web Service的class转化成WSDL文件。如下图所示
3):点击上图的WSDL按钮,会看到如下界面,这里显示的是生成的WSDL文件的详细信息,我们点击鼠标右键,将此文件保存到本地,这里姑且取名为SFAccountWebService.wsdl
4):我们可以简单的创建一个WebApplication的project,如下图所示,点击Reference后进行Add Web Reference
5):接上图,在URL的输入框中选择我们刚刚生成的WSDL文件,填写好右下角的Web Service Name,然后点击Add Reference按钮,这样我们就已经应用到了我们所刚刚生成的Web Service,是不是很简单呢~~
6):由于我们是通过外部系统去访问Salesforce内部的资源,那么不可逃避的首先便是认证,也就是说,我们必须首先通过Salesforce的认证,获取登陆用户的SessionId,然后此SessionId将作为此后每次访问Salesforce内部资源的认证标识,只有这样我们才能顺利调用到我们对外开放的Web Service。
如何在外部系统进行登陆认证获取对应的SessionId呢?这就涉及到了Salesforce默认提供的另外一个Web Service,如下图所示:
【setup --> build --> develop --> api --> partner wsdl --> generate partner wsdl】
7):将此WSDL文件以相同的方式保存到本地,这里姑且取名为 SFCommonService.wsdl
8):在对应Web Application的project中以相同的方式引用此文件
9):可以简单的看一下最终的引用状态,如下图所示
10):如何进行调用对应的Web Service呢? 请看如下代码
【login方法的两个参数是:用户名和密码。注:这里的密码是 用户密码 + 所对应的token】
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls; using TestSFWebServiceApplication.SFCommonWebService;
using TestSFWebServiceApplication.SFAccountWebService; namespace TestSFWebServiceApplication
{
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
//Call login function to get the session id
SforceService sfService = new SforceService();
LoginResult result = sfService.login(@"******************", @"***********************");
string currentSessionId = result.sessionId; //Call our web service function
string accountXmlInfo = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><Accounts><Account><AccountName>WebServiceTest001</AccountName><AccountNumber>AAA000-009</AccountNumber></Account></Accounts>";
SFAccountWebServiceService sfAccountService = new SFAccountWebServiceService();
SFAccountWebService.SessionHeader sfAccountHeader = new SFAccountWebService.SessionHeader();
sfAccountHeader.sessionId = currentSessionId;
sfAccountService.SessionHeaderValue = sfAccountHeader;
string upsertResult = sfAccountService.UpsertAccount(accountXmlInfo);
}
}
}
11):那么在Salesforce中如何引用外部系统所提供的Web Service呢?请看下图,将外部的WSDL文件生成Salesforce中所对应的Class
之后的具体调用这里就不详细列举了,请看如下链接:http://www.cnblogs.com/mingmingruyuedlut/p/3512262.html
更多内容请看如下链接:
http://shivasoft.in/blog/salesforce/consume-salesforce-web-service-in-c-net-application/
12):当然了我们可以创建对应的Rest Service供外部系统调用
12.1):在Salesforce中创建对应的Class,代码如下所示
@RestResource(urlMapping='/SFEricSunTestRestService')
global class SFEricSunTestRestService { @HttpGet
global static string GetTestRestInfo(){
string testInfo = 'Hello Rest Service.';
return testInfo;
}
}
这里的标识为 @RestResource(urlMapping='/.....') 这样所形成的Rest Service Uri 格式为 https://cs5.salesforce.com/services/apexrest/SFEricSunTestRestService
Http 的 GET 和 DELETE 方法不支持传递参数
12.2):在外部系统调用上面的Rest Service(Get 方法),代码如下所示
private void TestSFRestService()
{
SforceService sfService = new SforceService();
LoginResult result = sfService.login(@"......", @"......");
string currentSessionId = result.sessionId; string restServiceURI = @"https://cs5.salesforce.com/services/apexrest/SFEricSunTestRestService"; WebRequest request = WebRequest.Create(restServiceURI);
request.Method = "GET";
//request.ContentType = "application/xml";
request.Headers.Add("Authorization:Bearer " + currentSessionId); WebResponse response = request.GetResponse(); if (response != null)
{
StreamReader reader = new StreamReader(response.GetResponseStream());
string msg = reader.ReadToEnd();
} }
12.3):也可以进一步扩展,代码如下
@RestResource(urlMapping='/SFEricSunTestRestService/*')
global class SFEricSunTestRestService { @HttpDelete
global static string doDelete() {
RestRequest req = RestContext.request;
String name = req.requestURI.substring(req.requestURI.lastIndexOf('/')+);
return 'Delete ' + name;
} @HttpGet
global static string doGet() {
RestRequest req = RestContext.request;
String name = req.requestURI.substring(req.requestURI.lastIndexOf('/')+);
return 'Get ' + name;
} @HttpPost
global static String doPost(String name, String age) {
return 'Post' + name + ' ' + age;
} }
12.4):在外部系统调用上面的Rest Service,代码如下所示
private void TestSFRestService()
{
SforceService sfService = new SforceService();
LoginResult result = sfService.login(@"....", @"....");
string currentSessionId = result.sessionId; string restServiceURI = @"https://cs5.salesforce.com/services/apexrest/SFEricSunTestRestService/MyName"; WebRequest request = WebRequest.Create(restServiceURI);
request.Method = "GET";
//request.ContentType = "application/xml";
request.Headers.Add("Authorization:Bearer " + currentSessionId); WebResponse response = request.GetResponse(); if (response != null)
{
StreamReader reader = new StreamReader(response.GetResponseStream());
string msg = reader.ReadToEnd();
} }
这是对GET方法的调用,我们将Name放在了Url的最后面传递给Service中,如果想调用Delete的方法,那么将request.Method = "GET";修改成为request.Method = "DELETE";
这里的Post方法有些特殊,需要传递name和age参数(实质是就是将实参加入到request的body中一起发到目的端去请求),调用代码如下所示
这里提供了SOUP UI的截图如下所示:
12.5):如果我们想在Salesforce内部去调用对应的Rest Service,那么可以用如下方式
https://developer.salesforce.com/forums/#!/feedtype=SINGLE_QUESTION_SEARCH_RESULT&id=906F000000099zbIAA
更加详细的信息请看如下链接:
http://www.salesforce.com/us/developer/docs/apexcode/index_Left.htm#CSHID=apex_web_services_methods.htm|StartTopic=Content%2Fapex_web_services_methods.htm|SkinName=webhelp
https://developer.salesforce.com/page/Creating_REST_APIs_using_Apex_REST