JasperServer 被 CORS 策略阻止：没有“Access-Control-Allow-Origin”

Question

我正在尝试在 jasperserver 中启用 CORS 策略。

我正在使用 Angular HTTPClient 调用来自 jasperserver 的 API。

到目前为止我已经尝试过的事情。

修改 apache-tomcat apache-tomcat\conf\web.xml 文件 并在下面添加代码。

<filter>
    <filter-name>CorsFilter</filter-name>
    <filter-class>org.apache.catalina.filters.CorsFilter</filter-class>
    <init-param>
        <param-name>cors.allowed.origins</param-name>
        <param-value>*</param-value>
    </init-param>
    <init-param>
        <param-name>cors.allowed.headers</param-name>
        <param-value>Content-Type,X-Requested-With,Accept,Authorization,Origin,Access-Control-Request-Method,Access-Control-Request-Headers</param-value>
    </init-param>
    <init-param>
        <param-name>cors.exposed.headers</param-name>
        <param-value>Access-Control-Allow-Origin,Access-Control-Allow-Credentials</param-value>
    </init-param>
</filter>
<filter-mapping>
    <filter-name>CorsFilter</filter-name>
    <url-pattern> /* </url-pattern>
</filter-mapping>

来自apache-tomcat 网站。

也试过修改jasperserver\WEB-INF\Web.xml文件 并在下面添加代码

<filter>
<filter-name>CorsFilter2</filter-name>
<filter-class>org.apache.catalina.filters.CorsFilter</filter-class>
<init-param>
<param-name>cors.allowed.origins</param-name>
<param-value>*</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CorsFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

---

仍然没有运气并遇到此错误。

Answer 1

在为此苦苦挣扎了几个小时后，我想通了。

您必须完全禁用 Jasper 内置的 CorsFilter，并在您的 tomcat 的 /webapps/jasperserver/WEB-INF/web.xml 中添加/映射您自己的过滤器。全局tomcat web.xml不需要干预。

<!-- Comment the built-in filter out.
    <filter>
       <filter-name>CorsFilter</filter-name>
       <filter-class>com.jaspersoft.jasperserver.api.security.csrf.CorsFilter</filter-class>
    </filter>
    -->

    <filter>
        <filter-name>CorsFilter</filter-name>
        <filter-class>org.apache.catalina.filters.CorsFilter</filter-class>
        <init-param>
            <param-name>cors.allowed.origins</param-name>
            <!-- Tomcat 8.5+ doesn't allow '*' any longer in conjuction with 'cors.support.credentials' set to true.
             Instead, a specific comma separated list has to be set here. See https://bz.apache.org/bugzilla/show_bug.cgi?id=62343 -->
            <param-value>http://localhost:9000</param-value>
        </init-param>
        <init-param>
            <param-name>cors.allowed.methods</param-name>
            <param-value>GET,POST,HEAD,OPTIONS,PUT</param-value>
        </init-param>
        <init-param>
            <param-name>cors.allowed.headers</param-name>
            <!--- If requests contain an authorization header, it has to be added here as well -->
            <param-value>
                Content-Type,X-Requested-With,Accept,Origin,Access-Control-Request-Method,Access-Control-Request-Headers,X-Remote-Domain,Authorization
            </param-value>
        </init-param>
        <init-param>
            <param-name>cors.exposed.headers</param-name>
            <param-value>Access-Control-Allow-Origin,Access-Control-Allow-Credentials</param-value>
        </init-param>
        <init-param>
            <param-name>cors.support.credentials</param-name>
            <param-value>true</param-value>
        </init-param>
        <init-param>
            <param-name>cors.preflight.maxage</param-name>
            <param-value>10</param-value>
        </init-param>
    </filter>                
        .......

        <!-- Ensure your newly introduced mapping is first in line -->
            <filter-mapping>
                <filter-name>CorsFilter</filter-name>
                <url-pattern>/*</url-pattern>
            </filter-mapping>

        <!-- Also comment out any existing mappings for the built-in filter -->
        <!--
          <filter-mapping>
              <filter-name>CorsFilter</filter-name>
              <url-pattern>*.woff</url-pattern>
          </filter-mapping>
          <filter-mapping>
              <filter-name>CorsFilter</filter-name>
              <url-pattern>*.ttf</url-pattern>
          </filter-mapping>
          <filter-mapping>
              <filter-name>CorsFilter</filter-name>
              <url-pattern>*.svg</url-pattern>
          </filter-mapping>
          <filter-mapping>
              <filter-name>CorsFilter</filter-name>
              <url-pattern>*.eot</url-pattern>
          </filter-mapping>
        -->