ASP.NET WebServices注意事项

1.Ajax 跨域问题：

<system.webServer>
<httpProtocol>
<customHeaders>
<add name="Access-Control-Allow-Origin" value="*" />
<add name="Access-Control-Allow-Headers" value="Content-Type" />
<add name="Access-Control-Allow-Methods" value="GET, POST, PUT, DELETE, OPTIONS" />
</customHeaders>
</httpProtocol>
</system.webServer>

2.使用 JSON JavaScriptSerializer 进行序列化或反序列化时出错。字符串的长度超过了为 maxJsonLength 属性设置的值：

<system.web.extensions>
<scripting>
<webServices>
<jsonSerialization maxJsonLength="1024000" />
</webServices>
</scripting>
</system.web.extensions>

完整的Web.Config:

<configuration>
<system.web>
<compilation debug="true" targetFramework="4.0" />
</system.web>
<system.webServer>
<httpProtocol>
<customHeaders>
<add name="Access-Control-Allow-Origin" value="*" />
<add name="Access-Control-Allow-Headers" value="Content-Type" />
<add name="Access-Control-Allow-Methods" value="GET, POST, PUT, DELETE, OPTIONS" />
</customHeaders>
</httpProtocol>
</system.webServer>
<system.web.extensions>
<scripting>
<webServices>
<jsonSerialization maxJsonLength="1024000" />
</webServices>
</scripting>
</system.web.extensions>
</configuration>