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我正在尝试从 Java 调用 asmx webservice，我已经创建了 jar 文件并在 JNLP 中引用了它。但是当我尝试调用时，它给出了这个错误，

java.security.AccessControlException: access denied ("java.lang.RuntimePermission" "createClassLoader")
    at java.security.AccessControlContext.checkPermission(Unknown Source)
    at java.security.AccessController.checkPermission(Unknown Source)
    at java.lang.SecurityManager.checkPermission(Unknown Source)
    at java.lang.SecurityManager.checkCreateClassLoader(Unknown Source)
    at java.lang.ClassLoader.checkCreateClassLoader(Unknown Source)
    at java.lang.ClassLoader.<init>(Unknown Source)
    at org.apache.commons.discovery.jdk.PsuedoSystemClassLoader.<init>(PsuedoSystemClassLoader.java:73)
    at org.apache.commons.discovery.jdk.JDK12Hooks.findSystemClassLoader(JDK12Hooks.java:215)
    at org.apache.commons.discovery.jdk.JDK12Hooks.<clinit>(JDK12Hooks.java:73)
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