C# asp.net mvc 通过 HttpClient 访问 Web_API

//mvc  具体方法

//api地址 通过 webconfig配置
private static string apiadds = configurationmanager.appsettings["apiaddress"];

//具体方法
public int addselectflowerbll(string selectproduct, string productname, string productsum,int userid)
        {
            try
            {
                //非空判断
                if (!string.isnullorempty(selectproduct) && !string.isnullorempty(productname) &&
                    !string.isnullorempty(productsum))
                {
                    assembleflower aflower = new assembleflower();
                    aflower.name = productname;
                    aflower.pricesum = convert.toint32(productsum);
                    //添加人为1
                    aflower.assembleman = userid;
                    aflower.assembletime = datetime.now;
                    aflower.isdel = 0;
                    list<assemblematerial> materiallist = new list<assemblematerial>();
                    string[] productarry = selectproduct.split(';');
                    for (int i = 0; i < productarry.length - 1; i++)
                    {
                        string[] flowerarry = productarry[i].split(',');
                        assemblematerial m = new assemblematerial();
                        m.materialid = convert.toint32(flowerarry[0]);
                        m.materialcount = convert.toint32(flowerarry[1]);
                        materiallist.add(m);
                        
                    }
                    string[] strarray = { jsonconvert.serializeobject(aflower), jsonconvert.serializeobject(materiallist) };

                    #region 向后台提交数据
                    //创建httpclient对象
                    uri uri = new uri(apiadds);
                    httpclient client = new httpclient();
                    client.baseaddress = uri;
                    client.defaultrequestheaders.accept.add(new mediatypewithqualityheadervalue("application/json"));
                    var jsonstr = jsonconvert.serializeobject(strarray);
                    httpcontent cont = new stringcontent(jsonstr);
                    cont.headers.contenttype = new mediatypeheadervalue("application/json");
                    var returnstr = "";
                    httpresponsemessage resp = client.postasync("api/selectflower/assembleadd", cont).result;//post提交数据,
                    if (resp.issuccessstatuscode)
                    {
                        returnstr = resp.content.readasstringasync().result;
                    }
                    #endregion

                    return convert.toint32(jsonconvert.deserializeobject(returnstr));
                }
                else
                {
                    //空值
                    return -1;
                }
            }
            catch
            {
                //发生错误
                return -1;
                throw;
            }
        }

//api

[routeprefix("api/selectflower")]
public class selectflowercontroller : apicontroller
{
/// <summary>
/// 获取自选花的类型
/// </summary>
/// <param name="flowertype"></param>
/// <returns></returns>
[httpget]
[route("getselectflower")]
public datatable getselectflower(string flowertype)
{
string sql = string.format("select * from flowermaterial where isdel=0 and flowertype=@flowertype");
sqlparameter parameter = new sqlparameter("@flowertype", sqldbtype.varchar, 200);
parameter.value = flowertype;
return dbhelpersql.querydatatable(sql, parameter);
}

[httppost]
[route("assembleadd")]
public string assembleadd([frombody] dynamic jsonstr)
{
//将前台传过来的值转化为数组
var data = jsonconvert.deserializeobject<string[]>(jsonstr.tostring());
assembleflower aflower = jsonconvert.deserializeobject<assembleflower>(data[0]);
list<assemblematerial> materiallist = jsonconvert.deserializeobject<list<assemblematerial>>(data[1]);
list<dbhelpersql.keyvalue> list=new list<dbhelpersql.keyvalue>();
list.add(new dbhelpersql.keyvalue()
{
key = "insert into assembleflower values(@name,@pricesum,@assembleman,@assembletime,0)",
value = new sqlparameter[]
{
new sqlparameter("@name",aflower.name),
new sqlparameter("@pricesum",aflower.pricesum), 
new sqlparameter("@assembleman",aflower.assembleman), 
new sqlparameter("@assembletime",aflower.assembletime), 
}
});
foreach (var material in materiallist)
{
list.add(new dbhelpersql.keyvalue()
{
key = "insert into assemblematerial values(@materialid,@materialcount,(select top 1 id from assembleflower order by id desc))",
value = new sqlparameter[]
{
new sqlparameter("@materialid",material.materialid),
new sqlparameter("@materialcount",material.materialcount)
}
});
}
list.add(new dbhelpersql.keyvalue()
{
key = " insert into mycar values(3,(select top 1 id from assembleflower order by id desc),1,@userid,@createtime,0)",
value = new sqlparameter[]
{
new sqlparameter("@userid",aflower.assembleman),
new sqlparameter("@createtime",datetime.now)
}
});
return dbhelpersql.executesqltranandreturn(list).tostring();
}
}