Javascript ASP.NET核心-客户端AJAX不适用于IE11/Edge

我已经花了5天多的时间研究了一个只存在于IE和Edge中的问题（适用于Chrome、FireFox等）。我已经浏览了几乎所有的链接，并尝试了几乎所有的方法，但似乎很多旧帖子的内容/答案都已经过时了

背景：我创建了一个ASP.NET核心web服务-它正在本地主机上的某个端口上运行。理想情况下，我会让我的用户打开一个本地驻留的html文档（意味着驻留在他们的本地文件系统上，而不是托管在服务器上），该文档通过AJAX ping web服务（返回一些JSON）——允许来自web服务的内容显示在html文档中。除了IE和Edge（我使用的是IE11），它在所有浏览器中都能正常工作

这是我的启动。cs:

public void ConfigureServices(IServiceCollection services)
{
    // Add framework services.
    ...
    services.AddCors(o => o.AddPolicy("ContentServices", builder =>
    {
        builder.AllowAnyOrigin()
                .AllowAnyMethod()
                .AllowAnyHeader();
    }));
    services.AddMvc();
    ...
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
    ...
    app.UseCors("ContentServices");
    ...
}

[EnableCors("ContentServices")]
public SearchResponse Query(string index, string input, SearchType searchType, int page = 0, int pageSize = 20)
{
    SearchResponse sr = new SearchResponse;
    ...
    return sr;     
}

function WebService(url, successMsg, errorMsg) {
    return $.ajax({
        url: searchDestinationUrl + url,
        type: "GET",
        crossDomain: true,
        dataType: "json",
        success: function (results) {
            return results;
        },
        error: function (xhr, status, error) {
            console.error(error + " - " + errorMsg);
        }
    });
}

function RunGeneralSearch(input, options) {
        var search = WebService("search/query?index=" + index + "&input=" + input + "&page=" + options.content.pageIndex + "&pageSize=" + options.content.pageSize, "", "Search failed.")
            .then(function (response) {
                var searchResults = [];
                searchResults.content = [];
                searchResults.contentTotal = response.total;
                searchResults.clientPaging = false;

                var results = response.results;
                if (results.length > 0) {
                    var Search = MadCap.CreateNamespace("WebHelp.Search");

                    for (var i = 0; i < results.length; i++) {
                        var result = results[i];
                        var rank = result["rank"];
                        var title = result["title"];
                        var link = result["link"];
                        var linkUrl = GetLinkUrl(link);
                        var abstractText = result["abstractText"];

                        var searchResult = new Search.SearchResult(rank, title, linkUrl.FullPath, unescape(abstractText));
                        searchResults.content.push(searchResult);
                    }
                }

                return searchResults;
            });

        return search;
    };
}

这是我的SearchController。cs:

public void ConfigureServices(IServiceCollection services)
{
    // Add framework services.
    ...
    services.AddCors(o => o.AddPolicy("ContentServices", builder =>
    {
        builder.AllowAnyOrigin()
                .AllowAnyMethod()
                .AllowAnyHeader();
    }));
    services.AddMvc();
    ...
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
    ...
    app.UseCors("ContentServices");
    ...
}

[EnableCors("ContentServices")]
public SearchResponse Query(string index, string input, SearchType searchType, int page = 0, int pageSize = 20)
{
    SearchResponse sr = new SearchResponse;
    ...
    return sr;     
}

function WebService(url, successMsg, errorMsg) {
    return $.ajax({
        url: searchDestinationUrl + url,
        type: "GET",
        crossDomain: true,
        dataType: "json",
        success: function (results) {
            return results;
        },
        error: function (xhr, status, error) {
            console.error(error + " - " + errorMsg);
        }
    });
}

function RunGeneralSearch(input, options) {
        var search = WebService("search/query?index=" + index + "&input=" + input + "&page=" + options.content.pageIndex + "&pageSize=" + options.content.pageSize, "", "Search failed.")
            .then(function (response) {
                var searchResults = [];
                searchResults.content = [];
                searchResults.contentTotal = response.total;
                searchResults.clientPaging = false;

                var results = response.results;
                if (results.length > 0) {
                    var Search = MadCap.CreateNamespace("WebHelp.Search");

                    for (var i = 0; i < results.length; i++) {
                        var result = results[i];
                        var rank = result["rank"];
                        var title = result["title"];
                        var link = result["link"];
                        var linkUrl = GetLinkUrl(link);
                        var abstractText = result["abstractText"];

                        var searchResult = new Search.SearchResult(rank, title, linkUrl.FullPath, unescape(abstractText));
                        searchResults.content.push(searchResult);
                    }
                }

                return searchResults;
            });

        return search;
    };
}

这是我的JavaScript代码：

public void ConfigureServices(IServiceCollection services)
{
    // Add framework services.
    ...
    services.AddCors(o => o.AddPolicy("ContentServices", builder =>
    {
        builder.AllowAnyOrigin()
                .AllowAnyMethod()
                .AllowAnyHeader();
    }));
    services.AddMvc();
    ...
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
    ...
    app.UseCors("ContentServices");
    ...
}

[EnableCors("ContentServices")]
public SearchResponse Query(string index, string input, SearchType searchType, int page = 0, int pageSize = 20)
{
    SearchResponse sr = new SearchResponse;
    ...
    return sr;     
}

function WebService(url, successMsg, errorMsg) {
    return $.ajax({
        url: searchDestinationUrl + url,
        type: "GET",
        crossDomain: true,
        dataType: "json",
        success: function (results) {
            return results;
        },
        error: function (xhr, status, error) {
            console.error(error + " - " + errorMsg);
        }
    });
}

function RunGeneralSearch(input, options) {
        var search = WebService("search/query?index=" + index + "&input=" + input + "&page=" + options.content.pageIndex + "&pageSize=" + options.content.pageSize, "", "Search failed.")
            .then(function (response) {
                var searchResults = [];
                searchResults.content = [];
                searchResults.contentTotal = response.total;
                searchResults.clientPaging = false;

                var results = response.results;
                if (results.length > 0) {
                    var Search = MadCap.CreateNamespace("WebHelp.Search");

                    for (var i = 0; i < results.length; i++) {
                        var result = results[i];
                        var rank = result["rank"];
                        var title = result["title"];
                        var link = result["link"];
                        var linkUrl = GetLinkUrl(link);
                        var abstractText = result["abstractText"];

                        var searchResult = new Search.SearchResult(rank, title, linkUrl.FullPath, unescape(abstractText));
                        searchResults.content.push(searchResult);
                    }
                }

                return searchResults;
            });

        return search;
    };
}

函数WebService（url、successsg、errorMsg）{
返回$.ajax({
url:searchDestinationUrl+url，
键入：“获取”，
跨域：是的，
数据类型：“json”，
成功：功能（结果）{
返回结果；
},
错误：函数（xhr、状态、错误）{
控制台错误（错误+“-”+errorMsg）；
}
});
}
函数RunGeneralSearch（输入，选项）{
var search=WebService（“搜索/查询？索引=“+index+”&input=“+input+”&page=“+options.content.pageIndex+”&pageSize=“+options.content.pageSize”，”，“搜索失败”）
.然后（功能（响应）{
var搜索结果=[]；
searchResults.content=[]；
searchResults.contentTotal=response.total；
searchResults.clientPaging=false；
var结果=响应结果；
如果（results.length>0）{
var Search=MadCap.CreateNamespace（“WebHelp.Search”）；
对于（var i=0；i

我尝试过的事情：

public void ConfigureServices(IServiceCollection services)
{
    // Add framework services.
    ...
    services.AddCors(o => o.AddPolicy("ContentServices", builder =>
    {
        builder.AllowAnyOrigin()
                .AllowAnyMethod()
                .AllowAnyHeader();
    }));
    services.AddMvc();
    ...
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
    ...
    app.UseCors("ContentServices");
    ...
}

[EnableCors("ContentServices")]
public SearchResponse Query(string index, string input, SearchType searchType, int page = 0, int pageSize = 20)
{
    SearchResponse sr = new SearchResponse;
    ...
    return sr;     
}

function WebService(url, successMsg, errorMsg) {
    return $.ajax({
        url: searchDestinationUrl + url,
        type: "GET",
        crossDomain: true,
        dataType: "json",
        success: function (results) {
            return results;
        },
        error: function (xhr, status, error) {
            console.error(error + " - " + errorMsg);
        }
    });
}

function RunGeneralSearch(input, options) {
        var search = WebService("search/query?index=" + index + "&input=" + input + "&page=" + options.content.pageIndex + "&pageSize=" + options.content.pageSize, "", "Search failed.")
            .then(function (response) {
                var searchResults = [];
                searchResults.content = [];
                searchResults.contentTotal = response.total;
                searchResults.clientPaging = false;

                var results = response.results;
                if (results.length > 0) {
                    var Search = MadCap.CreateNamespace("WebHelp.Search");

                    for (var i = 0; i < results.length; i++) {
                        var result = results[i];
                        var rank = result["rank"];
                        var title = result["title"];
                        var link = result["link"];
                        var linkUrl = GetLinkUrl(link);
                        var abstractText = result["abstractText"];

                        var searchResult = new Search.SearchResult(rank, title, linkUrl.FullPath, unescape(abstractText));
                        searchResults.content.push(searchResult);
                    }
                }

                return searchResults;
            });

        return search;
    };
}

使用

$.support.cors=true

将适用于IE，但有例外 它将为对 有关安全性的web服务：

“此网页正在访问不受其控制的信息。这会带来安全风险。是否要继续？”

这绝对令人讨厌，我不会让我的客户为此修改他们的安全设置。这也不适用于Edge

将AJAX调用中的

crossDomain

属性更改为

false

-行为与上述行为相同，只是它现在不适用于所有其他浏览器

我已经读了很多关于使用

数据类型：“jsonp”

——但据我所知，它已被弃用，只支持GET请求。所以我没有试过，想远离它

我还读到，因为我试图通过本地驻留的非托管文件（即url是

文件：//

，而不是

http://

）访问web服务，所以技术上不支持它作为源站-因此在这种情况下，允许任何源站都没有帮助。我不确定这有多真实，甚至不知道如何检验这一点。不管怎样，我没有尝试通过localhost提供html文件，因为我不想要求我的客户机只为IE/Edge做这个，因为它在所有其他浏览器上都可以正常工作

我尝试使用

XMLHttpRequest

而不是和AJAX调用。它需要我接着执行

JSON.parse（result）但似乎适用于所有浏览器，包括IE，除了Edge

我在某种程度上理解CORS和同源策略的局限性，但我绝对不理解Microsoft浏览器和其他浏览器之间的区别

请帮忙