java.security.AccessControlException:拒绝访问（“java.net.URLPermission”）；https://example.com"*：*）

我试图使用Java通过urlConnection与ibm connections API进行对话，代码如下

String url = "https://example.com";
URL myUrl = new URL(url);
URLConnection urlCon = myUrl.openConnection();
urlCon.setRequestProperty("Method", "GET");
urlCon.addRequestProperty("Authorization", this.getBasicAuthCredentials());
urlCon.setConnectTimeout(5000);

System.out.println(urlCon.getContentType());
System.out.println(urlCon.getContent());

例如，如果内容类型是text/html就可以了，但是如果内容类型是image/png，请告诉我以下错误

image/png
 java.security.AccessControlException: Access denied ("java.net.URLPermission" "https://example.com" "*:*")
    at java.security.AccessController.throwACE(AccessController.java:157)
    at java.security.AccessController.checkPermissionHelper(AccessController.java:217)
    at java.security.AccessController.checkPermission(AccessController.java:349)
    at java.lang.SecurityManager.checkPermission(SecurityManager.java:562)
    at lotus.notes.AgentSecurityManager.checkPermission(Unknown Source)
    at sun.awt.image.URLImageSource.<init>(URLImageSource.java:62)
    at sun.awt.image.URLImageSource.<init>(URLImageSource.java:91)
    at sun.awt.image.URLImageSource.<init>(URLImageSource.java:96)
    at sun.net.www.content.image.png.getContent(png.java:48)
    at java.net.URLConnection.getContent(URLConnection.java:763)

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那么你是从notes代理运行这个？签名人有足够的权限吗？@umeli是的，我在notes代理那里运行这个。我甚至用服务器id对应用程序进行了签名，并在代理的属性的“安全”选项卡中选择了“允许具有完全管理权限的受限操作”选项。空指针错误使我认为您在修改策略文件时可能有错别字或错误字符。您是否尝试过使用“授权”选项{permission java.security.AllPermission}；“策略？

Agent error: java.security.policy: error adding Permission, java.net.URLPermission: java.lang.NullPointerException