Silverlight_Rest_WCF系列之五：RestInvoker的使用
在上篇文章中我们封装了Rest请求，下面我将做一些demo给大家演示RestInvoker怎么使用。
首先是服务契约代码：
这里注意下CreateByIdAndName方法,因为有两个参数，所以bodyStyle选择wrappedRequest.也就是对Request进行Wrapped的意思。
Wrapped的效果就是Json的格式会不一致。
View Code
[ServiceContract]
[ServiceKnownType(typeof(Product))]
public interface IRestService
{
[OperationContract]
[WebGet(UriTemplate = "Products", BodyStyle = WebMessageBodyStyle.Bare,ResponseFormat=WebMessageFormat.Json)]
List<Product> Query();
[OperationContract]
[WebInvoke(UriTemplate = "Products", Method = "POST", ResponseFormat = WebMessageFormat.Json)]
Product Create(Product product);
[OperationContract]
[WebInvoke(UriTemplate="ProductsByIdAndName",Method="POST",BodyStyle=WebMessageBodyStyle.WrappedRequest, ResponseFormat=WebMessageFormat.Json)]
Product CreateByIdAndName(Guid id, string name);
[OperationContract]
[WebInvoke(UriTemplate = "Products", Method = "PUT")]
Product Update(Product product);
[OperationContract]
[WebInvoke(UriTemplate = "Products", Method = "DELETE")]
Product Delete(Product product);
}
[ServiceKnownType(typeof(Product))]
public interface IRestService
{
[OperationContract]
[WebGet(UriTemplate = "Products", BodyStyle = WebMessageBodyStyle.Bare,ResponseFormat=WebMessageFormat.Json)]
List<Product> Query();
[OperationContract]
[WebInvoke(UriTemplate = "Products", Method = "POST", ResponseFormat = WebMessageFormat.Json)]
Product Create(Product product);
[OperationContract]
[WebInvoke(UriTemplate="ProductsByIdAndName",Method="POST",BodyStyle=WebMessageBodyStyle.WrappedRequest, ResponseFormat=WebMessageFormat.Json)]
Product CreateByIdAndName(Guid id, string name);
[OperationContract]
[WebInvoke(UriTemplate = "Products", Method = "PUT")]
Product Update(Product product);
[OperationContract]
[WebInvoke(UriTemplate = "Products", Method = "DELETE")]
Product Delete(Product product);
}
服务类：
View Code
public class RestService : IRestService
{
public List<Product> Query()
{
return SampleData.Datas;
}
public Product Create(Product product)
{
return new Product() { ID = product.ID, Name = product.Name + "PostServer" };
}
public Product CreateByIdAndName(Guid id, string name)
{
return new Product() { ID = id, Name = name + "CreateByIdAndName" };
}
public Product Update(Product product)
{
return new Product() { ID = product.ID, Name = product.Name + "PutServer" };
}
public Product Delete(Product product)
{
return new Product() { ID = product.ID, Name = product.Name + "DeleteServer" };
}
}
{
public List<Product> Query()
{
return SampleData.Datas;
}
public Product Create(Product product)
{
return new Product() { ID = product.ID, Name = product.Name + "PostServer" };
}
public Product CreateByIdAndName(Guid id, string name)
{
return new Product() { ID = id, Name = name + "CreateByIdAndName" };
}
public Product Update(Product product)
{
return new Product() { ID = product.ID, Name = product.Name + "PutServer" };
}
public Product Delete(Product product)
{
return new Product() { ID = product.ID, Name = product.Name + "DeleteServer" };
}
}
1:调用Get，Get对应的是Query方法。
具体代码如下：
RestInvoker.InvokeGet<Product[]>("http://localhost:18677/RestService.svc/Products",
(datas) =>
{
this.Dispatcher.BeginInvoke(() => {
MessageBox.Show(datas[0].Name);
});
});
(datas) =>
{
this.Dispatcher.BeginInvoke(() => {
MessageBox.Show(datas[0].Name);
});
});
2：调用Post，Post
Product product = new Product() { ID = Guid.NewGuid(), Name = "555" };
RestInvoker.InvokePost<Product, Product>("http://localhost:18677/RestService.svc/Products",
product, (resultProduct) =>
{
this.Dispatcher.BeginInvoke(() =>
{
MessageBox.Show(resultProduct.Name);
});
});
RestInvoker.InvokePost<Product, Product>("http://localhost:18677/RestService.svc/Products",
product, (resultProduct) =>
{
this.Dispatcher.BeginInvoke(() =>
{
MessageBox.Show(resultProduct.Name);
});
});
3：调用Post方法，对应的方法是：
public Product CreateByIdAndName(Guid id, string name)
{
return new Product() { ID = id, Name = name + "CreateByIdAndName" };
}
{
return new Product() { ID = id, Name = name + "CreateByIdAndName" };
}
因为RestInvoker支持匿名类和JsonObject，所以可以像这样的调用服务。
var data = new { id = Guid.NewGuid(), name = "testIdName" };
//JsonObject jo = new JsonObject();
//jo["id"] = Guid.NewGuid();
//jo["name"] = "testIdName";
RestInvoker.InvokePost("http://localhost:18677/RestService.svc/ProductsByIdAndName",data
, new Action<string>((result) =>
{
this.Dispatcher.BeginInvoke(() =>
{
MessageBox.Show(result);
});
}));
//JsonObject jo = new JsonObject();
//jo["id"] = Guid.NewGuid();
//jo["name"] = "testIdName";
RestInvoker.InvokePost("http://localhost:18677/RestService.svc/ProductsByIdAndName",data
, new Action<string>((result) =>
{
this.Dispatcher.BeginInvoke(() =>
{
MessageBox.Show(result);
});
}));
调用Put和Delete的方法和Post一致，区别是InvokePut,InvokeDelete.
这里大家可以看到因为不支持跨线程，所以我们调用了this.Dispatcher.BeginInvoke.
虽然解决了问题，但是很不优雅，下篇文章就会完善RestInvoker.让它支持跨线程访问。
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