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µÚÒ»£ºÅäÖÃTomcatϵÄconfÎļþ¼ÐϵÄcontext.xmlÎļþ
<?xml version='1.0' encoding='utf-8'?>
<Context>
 <Resource name="jdbc/Ãû³Æ" auth="Container" type="javax.sql.DataSource"
  maxActive="10" maxIdle="5" maxwait="-1" username="sa" password="1234"
  driverClassName="com.microsoft.sqlserver.jdbc.SQLServerDriver" url="jdbc:sqlserver://localhost:1433;Databasename=books" />
</Context>
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<?xml version='°æ±¾' encoding='±àÂ뷽ʽ'?>
<Context>//ÉÏÏÂÎÄ
 name=Êý¾ÝÔ´Ãû³Æ auth-¹ÜÀíÕß=Container»òAppliction type=Êý¾ÝÔ´ÀàÐÍ maxActive=×î´óÁ¬½ÓÊý macIdle=×îСÁ¬½ÓÊý maxwait=Á¬½ÓµÈ´ýʱ¼ä username=Êý¾Ý¿âÓû§Ãû password=Êý¾Ý¿âÁ¬½ÓÃÜÂë driverClassName=Çý¶¯Ãû³Æ url=Çý¶¯Á¬½ÓÀàÐÍdatabaseName=Êý¾Ý¿âÃû³Æ
</Context>
µÚ¶þ£ºÅäÖÃÏîĿϵÄWebRootĿ¼ÏµÄweb—infĿ¼ÏµÄweb.xmlÎļþ
<resource-ref>
<description>˵Ã÷Îĵµ</description>
<res-ref-name>Êý¾ÝÔ´Ãû³Æ<res-ref-name/>
<res-type>Êý¾ÝÔ´ÀàÐÍ</res-type>
<res-auth>¹ÜÀíÕßÀàÐÍ</res-auth>
</resource-ref>
µÚÈý£ºÅäÖÃÏîĿϵÄBaseDaoÁ¬½ÓÀà
Context context=new initialContext(); //³õʼ»¯
DataSource ds=(Datasource)context.lookup("java:comp/env/Êý¾ÝÔ´Ãû³Æ");   //ǰ׺+Çý¶¯Ãû³Æ
Connection conn=ds.getConnection();  //»ñµÃÁ¬½Ó


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