我的Web服务器托管在具有基本身份验证的Apache Tomcat 7中。我有Tomcat用户“ tomcat”，角色为“ tomcat”，密码为“
tomcat”。以下分别是我在客户端的web.xml文件和脚本片段。

Web.xml

<?xml version="1.0" encoding="ASCII"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
  <display-name>testservice</display-name>
  <servlet>
    <description>JAX-RS Tools Generated - Do not modify</description>
    <servlet-name>testservice</servlet-name>
    <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>testservice</servlet-name>
    <url-pattern>/rest/*</url-pattern>
  </servlet-mapping>

    <security-constraint>
        <web-resource-collection>
            <web-resource-name>testservice</web-resource-name>
            <url-pattern>/*</url-pattern>
            <http-method>GET</http-method>
            <http-method>POST</http-method>
        </web-resource-collection>
        <auth-constraint>
            <role-name>tomcat</role-name>
        </auth-constraint>

        <user-data-constraint>
            <!-- transport-guarantee can be CONFIDENTIAL, INTEGRAL, or NONE -->
            <transport-guarantee>NONE</transport-guarantee>
        </user-data-constraint>
    </security-constraint>

    <login-config>
        <auth-method>BASIC</auth-method>
    </login-config>
</web-app>

客户端脚本：

<script src="jquery-1.10.2.min.js" type="text/javascript"></script>
<script language="javascript" type="text/javascript">
    $.ajax({
        type: "GET",
        beforeSend: function (request)
        {
            request.setRequestHeader("Authorization", "Basic  dG9tY2F0OnRvbWNhdA==");
        },
        url: "http://localhost:1222/testservice/rest/test/users",
        dataType:"jsonp",
        success: function(res) {
            alert(res); 
        },
        error: function(err) {
            alert(err);
        }
    });                    
</script>

我很确定Web服务和基本身份验证没有问题。但是从客户端脚本中，没有发送身份验证标头。我也尝试header:("Authorization","Basic dG9tY2F0OnRvbWNhdA==")过 但是请求发送时没有身份验证头。任何帮助将不胜感激。