准备工作
·Customer类
public?class?Customer
{
????public?int?Unid?{?get;?set;?}
????public?string?CustomerName?{?get;?set;?}
????public?string?Memo?{?get;?set;?}
????public?string?Other?{?get;?set;?}
}
jQuery.post(?url,?[data],?[callback],?[type] )
·url:加载页的地址
·data(optional):k/v对或序列化的字符串(.serialize()),参数
·callbakc(optional):数据成功加载后的执行函数
·type(optional):请求返回的数据格式,串型
(一)ashx文件
(1)请求单实体数据
·Ashx文件,这里不对返回的数据做显式的序列化。?
Customer?customer?=?new?Customer?
??{?Unid?=?1,?CustomerName?=?”宋江”,?Memo?=?”天魁星”,?Other?=?”黑三郎”?};
context.Response.Write(customer);
·ajax post
function?GetCustomer_Ashx()?{
????$.post(
????”webdata/post_1.ashx”,
????function(data)?{
????????var?sx?=?$.JsonToObject(data);
????????var?tt?=?””;
????????$.each(sx,?function(k,?v)?{
????????????tt?+=?k?+?”:”?+?v?+?”<br/>”;
????????})
????????$(“#divmessage”).html(tt);
????},
????”json”
);}
(2)请求实体集合
·ashx文件
Customer?customer?=?new?Customer?
????{?Unid?=?1,?CustomerName?=?”宋江”,?Memo?=?”天魁星”,?Other?=?”黑三郎”?};
Customer?customer2?=?new?Customer?
????{?Unid?=?2,?CustomerName?=?”吴用”,?Memo?=?”天机星”,?Other?=?”智多星”?};
?
????List<Customer>?_list?=?new?List<Customer>();
????_list.Add(customer);
????_list.Add(customer2);
????string?strJson?=?Newtonsoft.Json.JsonConvert.SerializeObject(_list);
????context.Response.Write(strJson);
·ajax post
function?GetCustomer_AshxList()?{
????$.post(
????”webdata/post_1.ashx”,
????function(data)?{
????????var?jsonObjects?=?$.jsonToObject(data);
????????var?tt?=?””;
????????$.each(jsonObjects,?function(k,?v)?{
????????????$.each(v,?function(kk,?vv)?{
????????????????tt?+=?kk?+?”:”?+?vv?+?”<br/>”;
????????????});
????????});
????????$(“#divmessage”).html(tt);
????},
????”json”
????);
}
(3)带参数的请求
·ashx文件
在前者基础上添加了对请求参数的获取语句,并添加了linq查询
int?iCustomerId?=?Convert.ToInt32(context.Request[“iUnid”]);
????????var?cus?=?from?q?in?_list
??????????????????where?q.Unid?==?iCustomerId
??????????????????select?q;
string?strJson?=?Newtonsoft.Json.JsonConvert.SerializeObject(cus);
·ajax post
function?GetCustomer_AshxWithPara()?{
????$.post(
????”webdata/post_1.ashx”,
????{?iUnid:?1?},
????function(data)?{
????????var?tt?=?””;
????????$.each(data,?function(k,?v)?{
????????????$.each(v,?function(kk,?vv)?{
????????????????tt?+=?kk?+?”:”?+?vv?+?”<br/>”;
????????????});
????????});
????????$(“#divmessage”).html(tt);
????},
????”json”
);}
注意,这里返回的直接是json对象[object,object],可以直接解析。
这种参数传递的方法是以k/v对格式传递,post还有一种方式,那就是.serialize()之后的字串。
(二)Web Service
(1)Hello
·ws
[WebMethod]
public?string?HelloWorld()
{
????return?”Hello?World”;
}
·ajax post
function?WebService_Hello()?{
????$.post(
????”post_1.asmx/HelloWorld”,
????function(data)?{
????????alert(data.text);
????????$(“#divmessage”).html(data);
????},
????”json”
);}
这个web方法返回一个单独的字串。这是一个纯正的字串,对于客户端来说,这是一个object对象,但也可以理解为一个[object,object]对象,而它完整的数据格式可以理解为:{text: “Hello World”}
所以这里对它进行访问,可以如下:
·data.text 这种方式对应于Object.Property
·data[“text”] 这种方式对应于Object[“key”]
(2)json串
·ws
[WebMethod]
public?string?HelloWorld_Json()
{
????string?strJson=
??????@”{Unid:1,CustomerName:””宋江””,Memo:””天魁星””,Other:””黑三郎””}”;
????return?strJson;
}
·ajax post
function?WebService_HelloJsonString()?{
????$.post(
????”post_1.asmx/HelloWorld_Json”,
????function(data)?{
????????var?jsonString?=?data.text;
????????var?jsonObject?=?$.jsonToObject(jsonString);
????????var?tt?=?””;
????????$.each(jsonObject,?function(k,?v)?{
????????????tt?+=?k?+?”:”?+?v?+?”<br/>”;
????????})
????????$(“#divmessage”).html(tt);
????},
????”json”
);}
虽然服务方法返回的是string类型的数据:
{Unid:1,CustomerName:”宋江”,Memo:”天魁星”,Other:”黑三郎”}
但客户端得到的数据却是object类型,可以理解为[object,object],也就是
{text:’{Unid:1,CustomerName:”宋江”,Memo:”天魁星”,Other:”黑三郎”}’}
客户端请求到的数据取到json字串,然后转换为json对象,后进行解析。
所以,在请求web服务方法时,如果方法返回字串类型,先要通过data.text得到做为唯一k/v对的v值,也就是json字串,然后再进行下一步操作。
(3)通过串行化返回json字串的web方法
·ws
[WebMethod]
public?string?GetCustomer_Json()
{
????Customer?customer?=?new?Customer
??????{?Unid?=?1,?CustomerName?=?”宋江”,?Memo?=?”天魁星”,?Other?=?”黑三郎”?};
????string?strJson?=?Newtonsoft.Json.JsonConvert.SerializeObject(customer);
????return?strJson;
}
·ajax post
function?WebService_CustomerJsonString()?{
????$.post(
????”post_1.asmx/GetCustomer_Json”,
????function(data)?{
????????var?jsonString?=?data.text;
????????var?jsonObject?=?$.jsonToObject(jsonString);
????????var?tt?=?””;
????????$.each(jsonObject,?function(k,?v)?{
????????????tt?+=?k?+?”:”?+?v?+?”<br/>”;
????????})
????????$(“#divmessage”).html(tt);
????},
????”json”
);}
这个方法与(2)相同道理。
(4)客户集
·ws
[WebMethod]
public?string?GetCustomerList_Json()
{
????Customer?customer?=?new?Customer?
???????{?Unid?=?1,?CustomerName?=?”宋江”,?Memo?=?”天魁星”,?Other?=?”黑三郎”?};
????Customer?customer2?=?new?Customer?
???????{?Unid?=?2,?CustomerName?=?”吴用”,?Memo?=?”天机星”,?Other?=?”智多星”?};?
????????List<Customer>?_list?=?new?List<Customer>();
????????_list.Add(customer);
????????_list.Add(customer2);?
????????string?strJson?=?Newtonsoft.Json.JsonConvert.SerializeObject(_list);
????????return?strJson;
}
·ajax post
function?WebService_CustomerListJsonString()?{
????$.post(
????”post_1.asmx/GetCustomerList_Json”,
????function(data)?{
????????var?jsonString?=?data.text;
????????var?jsonObject?=?$.jsonToObject(jsonString);
????????var?tt?=?””;
????????$.each(jsonObject,?function(k,?v)?{
????????????$.each(v,?function(kk,?vv)?{
????????????????tt?+=?kk?+?”:”?+?vv?+?”<br/>”;
????????????});
????????});
????????$(“#divmessage”).html(tt);
????},
????”json”
);}
其实得到了json字串,也就能正常解析出来。主要是理解返回的数据对象的格式。
(5)带参数的ws
·ws
[WebMethod]
public?string?GetCustomerList_JsonPara(int?iUnid)
{
????Customer?customer?=?new?Customer?
???????{?Unid?=?1,?CustomerName?=?”宋江”,?Memo?=?”天魁星”,?Other?=?”黑三郎”?};
????Customer?customer2?=?new?Customer?
???????{?Unid?=?2,?CustomerName?=?”吴用”,?Memo?=?”天机星”,?Other?=?”智多星”?};?
????????List<Customer>?_list?=?new?List<Customer>();
????????_list.Add(customer);
????????_list.Add(customer2);?
????????var?cus?=?from?q?in?_list
??????????????????where?q.Unid?==?iUnid
??????????????????select?q;?
????????string?strJson?=?Newtonsoft.Json.JsonConvert.SerializeObject(cus);
????????return?strJson;
}
?·ajax post
function?WebService_CustomerListJsonStringWithPara()?{
????$.post(“post_1.asmx/GetCustomerList_JsonPara”,
????{iUnid:2},
????function(data)?{
????????var?jsonString?=?data.text;
????????var?jsonObject?=?$.jsonToObject(jsonString);
????????var?tt?=?””;
????????$.each(jsonObject,?function(k,?v)?{
????????$.each(v,?function(kk,?vv)?{
????????tt?+=?kk?+?”:”?+?vv?+?”<br/>”;
????????});
????????});
????????$(“#divmessage”).html(tt);????????
????}
?);}
带参数的post时,post函数的type部分不能以json格式请求返回。可以省略。
$.post
调用webservice,通过Response来返回数据。
(一)Hello
·ws
[WebMethod]
public?void?HelloWorld()
{
????HttpResponse?Response?=?HttpContext.Current.Response;
????Response.ContentEncoding?=?System.Text.Encoding.Default;
????Response.Write(“Hello?world!”);
}
·ajax post
function?ajaxVoidHello()?{
????$.post(
????”post_2.asmx/HelloWorld”,
????function(data)?{
????????var?jsonString?=?data.text;
????????$(“#divmessage”).html(data);
????},
????”json”
????);
}
客户端得到的数据类型为string类型。
(二)得到客户实体
·ws
[WebMethod]
public?void?GetCustomer()
{
????Customer?customer?=?new?Customer?
????????{?Unid?=?1,?CustomerName?=?”宋江”,?Memo?=?”天魁星”,?Other?=?”黑三郎”?};
????string?strJson?=?Newtonsoft.Json.JsonConvert.SerializeObject(customer);?
????HttpResponse?Response?=?HttpContext.Current.Response;
????Response.ContentEncoding?=?System.Text.Encoding.Default;
????Response.ContentType?=?”application/json”;
????Response.Write(strJson);
}
这里ContentType很重要,这里要保留,即使空值也可以。
·ajax post
function?ajaxGetCustomer()?{
????$.post(
????”post_2.asmx/GetCustomer”,
????function(data)?{
????????var?jsonString?=?data;
????????var?jsonObject?=?$.jsonToObject(jsonString);?
????????var?tt?=?”;
????????$.each(jsonObject,?function(k,?v)?{
????????????tt?+=?k?+?”:”?+?v?+?”<br/>”;
????????});
????????$(“#divmessage”).html(tt);
????},
???”json”
);}
请求json数据,返回的是一个字符串,就是json字串,然后处理。
(三)得到客户集
·ws
[WebMethod]
public?void?GetCustomersList()
{
????Customer?customer?=?new?Customer?
???????{?Unid?=?1,?CustomerName?=?”宋江”,?Memo?=?”天魁星”,?Other?=?”黑三郎”?};
????Customer?customer2?=?new?Customer?
???????{?Unid?=?2,?CustomerName?=?”吴用”,?Memo?=?”天机星”,?Other?=?”智多星”?};?
????List<Customer>?_list?=?new?List<Customer>();
????_list.Add(customer);
????_list.Add(customer2);
????string?strJson?=?Newtonsoft.Json.JsonConvert.SerializeObject(_list);?
????HttpResponse?Response?=?HttpContext.Current.Response;
????Response.ContentEncoding?=?System.Text.Encoding.Default;
????Response.ContentType?=?”application/json”;
????Response.Write(strJson);
}
·ajax post
function?ajaxGetCustomerList()?{
????$.post(
????”post_2.asmx/GetCustomersList”,
????function(data)?{
????????alert(data);
????????var?jsonString?=?data;
????????var?jsonObject?=?$.jsonToObject(jsonString);?
????????var?tt?=?”;
????????$.each(jsonObject,?function(k,?v)?{
????????????$.each(v,?function(kk,?vv)?{
????????????????tt?+=?kk?+?”:”?+?vv?+?”<br/>”;
????????????});
????????});
????????$(“#divmessage”).html(tt);
????},
???”json”
);}
这些很容易理解了,返回的是json字串。处理字串就可以了。
(四)带参数的
·ws
[WebMethod]
public?void?GetCustomersListWithPara(int?iUnid)
{
????Customer?customer?=?new?Customer?
????????{?Unid?=?1,?CustomerName?=?”宋江”,?Memo?=?”天魁星”,?Other?=?”黑三郎”?};
????Customer?customer2?=?new?Customer?
????????{?Unid?=?2,?CustomerName?=?”吴用”,?Memo?=?”天机星”,?Other?=?”智多星”?};?
????List<Customer>?_list?=?new?List<Customer>();
????_list.Add(customer);
????_list.Add(customer2);?
????var?q?=?_list.Where(p?=>?p.Unid?==?iUnid);?
????string?strJson?=?Newtonsoft.Json.JsonConvert.SerializeObject(q);?
????HttpResponse?Response?=?HttpContext.Current.Response;
????Response.ContentEncoding?=?System.Text.Encoding.Default;
????Response.ContentType?=?””;
????Response.Write(strJson);
}
·ajax post
function?ajaxGetCustomerListWithPara()?{
????$.post(
????”post_2.asmx/GetCustomersListWithPara”,
????{?iUnid:?1?},
????function(data)?{
????????var?tt?=?”;
????????$.each(data,?function(k,?v)?{
????????????$.each(v,?function(kk,?vv)?{
????????????????tt?+=?kk?+?”:”?+?vv?+?”<br/>”;
????????????})
????????});
????????$(“#divmessage”).html(tt);
????},
???”json”
);}
这里返回的是[object,object]类型。
服务端的ContentType可以设置为空。
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