Angularjs 否'；访问控制允许原点'；在Pivotal web服务中托管Spring RESTful时出错

我使用

springboot

创建了一个

restfulapi

，并将其托管在

关键web服务中

假设url为，json结果为

[

       {"id":1,"name":"Michael","score":8.5},
       {"id":2,"name":"Naomi","score":5.6}
]

然后我编写一个Angular客户端，向该url发送请求：

angular.module("app", []).controller("listController", function($scope, $http)
{
    var url = 'https://abc.cfapps.io/students';
    var httpRequest = new XMLHttpRequest();
    httpRequest.open('GET', url, true);
    httpRequest.setRequestHeader('Access-Control-Allow-Origin', '*');
    httpRequest.setRequestHeader('Content-Type', 'application/json');
    httpRequest.onerror = function (XMLHttpRequest, textStatus, errorThrown) {
        console.log('failed');
        console.log(JSON.stringify(XMLHttpRequest));
    };
    httpRequest.onload = function () {
        console.log('SUCCESS!');
    }
    httpRequest.send();        
});

我的客户端在
localhost:52442
中运行，在我的
Spring引导服务中也允许
CORS

@RestController
@CrossOrigin(origins = "http://localhost:52442")
@RequestMapping(value="/students")
public class StudentService
{

    @RequestMapping(value="/",method = RequestMethod.GET)
    public ArrayList<Student> getListStudents()
    {
        // return list
    }

// other methods
}

尝试以下格式的
$http
GET-call，并将标头设置为允许跨原点

    $http({method: 'GET',
           url: 'https://abc.cfapps.io/students',
           cache:false,
           headers: {
                'Access-Control-Allow-Origin': '*',
                'Access-Control-Allow-Methods': 'GET, POST, PUT, DELETE, OPTIONS',
                'Access-Control-Allow-Headers': 'Content-Type, X-Requested-With',
                'X-Random-Shit':'123123123'
            }})
            .success(function(outputData) {
    });

如果您在后端使用java代码

我们可以通过为它创建一个类来尝试以这种方式配置它

   package com.web;

   import org.springframework.stereotype.Component;

   import javax.servlet.*;
   import javax.servlet.http.HttpServletResponse;
   import java.io.IOException;

/**
 * Note this is a very simple CORS filter that is wide open.
 * This would need to be locked down.
 */
@Component
public class CORSFilter implements Filter {

    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
        HttpServletResponse response = (HttpServletResponse) res;
        response.setHeader("Access-Control-Allow-Origin", "*");
        response.setHeader("Access-Control-Allow-Methods", "POST, GET, PUT, OPTIONS, DELETE");
        response.setHeader("Access-Control-Max-Age", "3600");
        response.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
        chain.doFilter(req, res);
    }

    public void init(FilterConfig filterConfig) {}

    public void destroy() {}

}

我认为这可能有用

   package com.web;

   import org.springframework.stereotype.Component;

   import javax.servlet.*;
   import javax.servlet.http.HttpServletResponse;
   import java.io.IOException;

/**
 * Note this is a very simple CORS filter that is wide open.
 * This would need to be locked down.
 */
@Component
public class CORSFilter implements Filter {

    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
        HttpServletResponse response = (HttpServletResponse) res;
        response.setHeader("Access-Control-Allow-Origin", "*");
        response.setHeader("Access-Control-Allow-Methods", "POST, GET, PUT, OPTIONS, DELETE");
        response.setHeader("Access-Control-Max-Age", "3600");
        response.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
        chain.doFilter(req, res);
    }

    public void init(FilterConfig filterConfig) {}

    public void destroy() {}

}