import org.apache.naming.JndiPermission; //导入依赖的package包/类
public DirContextURLConnection(DirContext context, URL url) {
    super(url);
    if (context == null)
        throw new IllegalArgumentException
            ("Directory context can't be null");
    if (org.apache.naming.Constants.IS_SECURITY_ENABLED) {
        this.permission = new JndiPermission(url.toString());
}
    this.context = context;
}
 

import org.apache.naming.JndiPermission; //导入依赖的package包/类
/**
 * If there is a Java SecurityManager create a read FilePermission
 * or JndiPermission for the file directory path.
 *
 * @param path file directory path
 */
public void setPermissions(String path) {
    if( securityManager != null ) {
        if( path.startsWith("jndi:") || path.startsWith("jar:jndi:") ) {
            permissionList.add(new JndiPermission(path + "*"));
        } else {
            permissionList.add(new FilePermission(path + "-","read"));
        }
    }
}
 

import org.apache.naming.JndiPermission; //导入依赖的package包/类
public DirContextURLConnection(DirContext context, URL url) {
       super(url);
       if (context == null)
           throw new IllegalArgumentException
               ("Directory context can't be null");
       if (System.getSecurityManager() != null) {
           this.permission = new JndiPermission(url.toString());
}
       this.context = context;
   }
 

import org.apache.naming.JndiPermission; //导入依赖的package包/类
public DirContextURLConnection(DirContext context, URL url) {
	super(url);
	if (context == null)
		throw new IllegalArgumentException("Directory context can't be null");
	if (org.apache.naming.Constants.IS_SECURITY_ENABLED) {
		this.permission = new JndiPermission(url.toString());
	}
	this.context = context;
}