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1). ¼ÓÈë spring-security µÄÁ½¸ö jar °ü
2). ÔÚ web.xml ÎļþÖмÓÈë¼ÓÈë spring-security ¿ò¼ÜµÄ¹ýÂËÆ÷
3). н¨ applicationContext-security.xml ÅäÖÃÎļþ,²¢ÇÒ°Ñ security ×÷ΪĬÈϵÄÃüÃû¿Õ¼ä,
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Authority -- ȨÏÞ
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Role -- ½ÇÉ«
Employee -- Ìí¼Ó Set<Role> roleSet
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Authority ºÍ Role Ϊ¶à¶Ô¶àµÄ¶ÔÓ¦¹ØÏµ
Role ºÍ Employee Ϊ¶à¶Ô¶àµÄ¶ÔÓ¦¹ØÏµ
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5).
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