{"id":247,"date":"2014-12-06T00:58:01","date_gmt":"2014-12-05T16:58:01","guid":{"rendered":"http:\/\/www.codeeel.com\/?p=247"},"modified":"2014-12-06T00:58:01","modified_gmt":"2014-12-05T16:58:01","slug":"java%e7%9a%84%e5%87%a0%e7%a7%8d%e5%af%b9%e8%b1%a1povodaobopojo%e8%a7%a3%e9%87%8a","status":"publish","type":"post","link":"https:\/\/www.codeeel.com\/?p=247","title":{"rendered":"java\u7684\u51e0\u79cd\u5bf9\u8c61(PO,VO,DAO,BO,POJO)\u89e3\u91ca"},"content":{"rendered":"

\u4e00\u3001PO:persistant object\u6301\u4e45\u5bf9\u8c61,\u53ef\u4ee5\u770b\u6210\u662f\u4e0e\u6570\u636e\u5e93\u4e2d\u7684\u8868\u76f8\u6620\u5c04\u7684java\u5bf9\u8c61\u3002\u6700\u7b80\u5355\u7684PO\u5c31\u662f\u5bf9\u5e94\u6570\u636e\u5e93\u4e2d\u67d0\u4e2a\u8868\u4e2d\u7684\u4e00\u6761\u8bb0\u5f55\uff0c\u591a\u4e2a\u8bb0\u5f55\u53ef\u4ee5\u7528PO\u7684\u96c6\u5408\u3002PO\u4e2d\u5e94\u8be5\u4e0d\u5305\u542b\u4efb\u4f55\u5bf9\u6570\u636e\u5e93\u7684\u64cd\u4f5c\u3002<\/p>\n

\u4e8c\u3001VO:value object\u503c\u5bf9\u8c61\u3002\u901a\u5e38\u7528\u4e8e\u4e1a\u52a1\u5c42\u4e4b\u95f4\u7684\u6570\u636e\u4f20\u9012\uff0c\u548cPO\u4e00\u6837\u4e5f\u662f\u4ec5\u4ec5\u5305\u542b\u6570\u636e\u800c\u5df2\u3002\u4f46\u5e94\u662f\u62bd\u8c61\u51fa\u7684\u4e1a\u52a1\u5bf9\u8c61,\u53ef\u4ee5\u548c\u8868\u5bf9\u5e94,\u4e5f\u53ef\u4ee5\u4e0d,\u8fd9\u6839\u636e\u4e1a\u52a1\u7684\u9700\u8981.\u4e2a\u4eba\u89c9\u5f97\u540cDTO(\u6570\u636e\u4f20\u8f93\u5bf9\u8c61),\u5728web\u4e0a\u4f20\u9012\u3002<\/p>\n

\u4e09\u3001DAO:data accessobject \u6570\u636e\u8bbf\u95ee\u5bf9\u8c61\uff0c\u6b64\u5bf9\u8c61\u7528\u4e8e\u8bbf\u95ee\u6570\u636e\u5e93\u3002\u901a\u5e38\u548cPO\u7ed3\u5408\u4f7f\u7528\uff0cDAO\u4e2d\u5305\u542b\u4e86\u5404\u79cd\u6570\u636e\u5e93\u7684\u64cd\u4f5c\u65b9\u6cd5\u3002\u901a\u8fc7\u5b83\u7684\u65b9\u6cd5,\u7ed3\u5408PO\u5bf9\u6570\u636e\u5e93\u8fdb\u884c\u76f8\u5173\u7684\u64cd\u4f5c\u3002<\/p>\n

\u56db\u3001BO:business object \u4e1a\u52a1\u5bf9\u8c61,\u5c01\u88c5\u4e1a\u52a1\u903b\u8f91\u7684java\u5bf9\u8c61,\u901a\u8fc7\u8c03\u7528DAO\u65b9\u6cd5,\u7ed3\u5408PO,VO\u8fdb\u884c\u4e1a\u52a1\u64cd\u4f5c\u3002<\/p>\n

\u4e94\u3001POJO:plain ordinaryjava object \u7b80\u5355\u65e0\u89c4\u5219java\u5bf9\u8c61,\u5b83\u548c\u5176\u4ed6\u5bf9\u8c61\u4e0d\u662f\u4e00\u4e2a\u5c42\u9762\u4e0a\u7684\u4e1c\u897f,VO\u548cPO\u5e94\u8be5\u90fd\u5c5e\u4e8e\u5b83.<\/p>\n

 <\/p>\n

PO\uff1a
\npersistant object\u6301\u4e45\u5bf9\u8c61\uff0c\u5373\u6301\u4e45\u5c42
\n\u6700\u5f62\u8c61\u7684\u7406\u89e3\u5c31\u662f\u4e00\u4e2aPO\u5c31\u662f\u6570\u636e\u5e93\u4e2d\u7684\u4e00\u6761\u8bb0\u5f55\u3002
\n\u597d\u5904\u662f\u53ef\u4ee5\u628a\u4e00\u6761\u8bb0\u5f55\u4f5c\u4e3a\u4e00\u4e2a\u5bf9\u8c61\u5904\u7406\uff0c\u53ef\u4ee5\u65b9\u4fbf\u7684\u8f6c\u4e3a\u5176\u5b83\u5bf9\u8c61\u3002<\/p>\n

BO\uff1a
\nbusiness object\u4e1a\u52a1\u5bf9\u8c61\uff0c\u5373Service\u5c42
\n\u4e3b\u8981\u4f5c\u7528\u662f\u628a\u4e1a\u52a1\u903b\u8f91\u5c01\u88c5\u4e3a\u4e00\u4e2a\u5bf9\u8c61\u3002\u8fd9\u4e2a\u5bf9\u8c61\u53ef\u4ee5\u5305\u62ec\u4e00\u4e2a\u6216\u591a\u4e2a\u5176\u5b83\u7684\u5bf9\u8c61\u3002
\n\u6bd4\u5982\u4e00\u4e2a\u7b80\u5386\uff0c\u6709\u6559\u80b2\u7ecf\u5386\u3001\u5de5\u4f5c\u7ecf\u5386\u3001\u00a0 \u5173\u7cfb\u7b49\u7b49\u3002
\n\u6211\u4eec\u53ef\u4ee5\u628a\u6559\u80b2\u7ecf\u5386\u5bf9\u5e94\u4e00\u4e2aPO\uff0c\u5de5\u4f5c\u7ecf\u5386\u5bf9\u5e94\u4e00\u4e2aPO\uff0c\u00a0 \u5173\u7cfb\u5bf9\u5e94\u4e00\u4e2aPO\u3002
\n\u5efa\u7acb\u4e00\u4e2a\u5bf9\u5e94\u7b80\u5386\u7684BO\u5bf9\u8c61\u5904\u7406\u7b80\u5386\uff0c\u6bcf\u4e2aBO\u5305\u542b\u8fd9\u4e9bPO\u3002
\n\u8fd9\u6837\u5904\u7406\u4e1a\u52a1\u903b\u8f91\u65f6\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u9488\u5bf9BO\u53bb\u5904\u7406\u3002
\nVO \uff1a
\nvalue object\u503c\u5bf9\u8c61
\nViewObject\u8868\u73b0\u5c42\u5bf9\u8c61\uff0c\u5373\u63a7\u5236\u5c42\uff08Action\u5c42\uff09
\n\u4e3b\u8981\u5bf9\u5e94\u754c\u9762\u663e\u793a\u7684\u6570\u636e\u5bf9\u8c61\u3002\u5bf9\u4e8e\u4e00\u4e2aWEB\u9875\u9762\uff0c\u6216\u8005SWT\u3001SWING\u7684\u4e00\u4e2a\u754c\u9762\uff0c\u7528\u4e00\u4e2aVO\u5bf9\u8c61\u5bf9\u5e94\u6574\u4e2a\u754c\u9762\u7684\u503c\u3002<\/p>\n

DTO \uff1a
\nData Transfer Object\u6570\u636e\u4f20\u8f93\u5bf9\u8c61
\n\u4e3b\u8981\u7528\u4e8e\u8fdc\u7a0b\u8c03\u7528\u7b49\u9700\u8981\u5927\u91cf\u4f20\u8f93\u5bf9\u8c61\u7684\u5730\u65b9\u3002
\n\u6bd4\u5982\u6211\u4eec\u4e00\u5f20\u8868\u6709100\u4e2a\u5b57\u6bb5\uff0c\u90a3\u4e48\u5bf9\u5e94\u7684PO\u5c31\u6709100\u4e2a\u5c5e\u6027\u3002
\n\u4f46\u662f\u6211\u4eec\u754c\u9762\u4e0a\u53ea\u8981\u663e\u793a10\u4e2a\u5b57\u6bb5\uff0c
\n\u5ba2\u6237\u7aef\u7528WEB service\u6765\u83b7\u53d6\u6570\u636e\uff0c\u6ca1\u6709\u5fc5\u8981\u628a\u6574\u4e2aPO\u5bf9\u8c61\u4f20\u9012\u5230\u5ba2\u6237\u7aef\uff0c
\n\u8fd9\u65f6\u6211\u4eec\u5c31\u53ef\u4ee5\u7528\u53ea\u6709\u8fd910\u4e2a\u5c5e\u6027\u7684DTO\u6765\u4f20\u9012\u7ed3\u679c\u5230\u5ba2\u6237\u7aef\uff0c\u8fd9\u6837\u4e5f\u4e0d\u4f1a\u66b4\u9732\u670d\u52a1\u7aef\u8868\u7ed3\u6784.\u5230\u8fbe\u5ba2\u6237\u7aef\u4ee5\u540e\uff0c\u5982\u679c\u7528\u8fd9\u4e2a\u5bf9\u8c61\u6765\u5bf9\u5e94\u754c\u9762\u663e\u793a\uff0c\u90a3\u6b64\u65f6\u5b83\u7684\u8eab\u4efd\u5c31\u8f6c\u4e3aVO
\nPOJO \uff1a
\nplain ordinary java object \u7b80\u5355java\u5bf9\u8c61
\nPOJO\u662f\u6700\u5e38\u89c1\u6700\u591a\u53d8\u7684\u5bf9\u8c61\uff0c\u662f\u4e00\u4e2a\u4e2d\u95f4\u5bf9\u8c61\uff0c\u4e5f\u662f\u6211\u4eec\u6700\u5e38\u6253\u4ea4\u9053\u7684\u5bf9\u8c61\u3002
\n\u4e00\u4e2aPOJO\u6301\u4e45\u5316\u4ee5\u540e\u5c31\u662fPO
\n\u76f4\u63a5\u7528\u5b83\u4f20\u9012\u3001\u4f20\u9012\u8fc7\u7a0b\u4e2d\u5c31\u662fDTO
\n\u76f4\u63a5\u7528\u6765\u5bf9\u5e94\u8868\u793a\u5c42\u5c31\u662fVO<\/p>\n

DAO\uff1a
\ndata access object\u6570\u636e\u8bbf\u95ee\u5bf9\u8c61\uff0c\u5373DAO\u5c42
\n\u8fd9\u4e2a\u5927\u5bb6\u6700\u719f\u6089\uff0c\u548c\u4e0a\u9762\u51e0\u4e2aO\u533a\u522b\u6700\u5927\uff0c\u57fa\u672c\u6ca1\u6709\u4e92\u76f8\u8f6c\u5316\u7684\u53ef\u80fd\u6027\u548c\u5fc5\u8981.
\n\u4e3b\u8981\u7528\u6765\u5c01\u88c5\u5bf9\u6570\u636e\u5e93\u7684\u8bbf\u95ee\u3002\u901a\u8fc7\u5b83\u53ef\u4ee5\u628aPOJO\u6301\u4e45\u5316\u4e3aPO\uff0c\u7528PO\u7ec4\u88c5\u51fa\u6765VO\u3001DTO<\/p>\n","protected":false},"excerpt":{"rendered":"

\u4e00\u3001PO:persistant object\u6301\u4e45\u5bf9\u8c61,\u53ef\u4ee5\u770b\u6210\u662f\u4e0e\u6570\u636e\u5e93\u4e2d\u7684\u8868\u76f8\u6620\u5c04\u7684java\u5bf9\u8c61\u3002\u6700\u7b80\u5355\u7684PO\u5c31\u662f\u5bf9\u5e94\u6570\u636e\u5e93\u4e2d\u67d0\u4e2a\u8868\u4e2d\u7684\u4e00\u6761\u8bb0\u5f55\uff0c\u591a\u4e2a\u8bb0\u5f55\u53ef\u4ee5\u7528PO\u7684\u96c6\u5408\u3002PO\u4e2d\u5e94\u8be5\u4e0d\u5305\u542b\u4efb\u4f55\u5bf9\u6570\u636e\u5e93\u7684\u64cd\u4f5c\u3002 \u4e8c\u3001VO:value object\u503c\u5bf9\u8c61\u3002\u901a\u5e38\u7528\u4e8e\u4e1a\u52a1\u5c42\u4e4b\u95f4\u7684\u6570\u636e\u4f20\u9012\uff0c\u548cPO\u4e00\u6837\u4e5f\u662f\u4ec5\u4ec5\u5305\u542b\u6570\u636e\u800c\u5df2\u3002\u4f46\u5e94<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[140,139,137,141,138],"_links":{"self":[{"href":"https:\/\/www.codeeel.com\/index.php?rest_route=\/wp\/v2\/posts\/247"}],"collection":[{"href":"https:\/\/www.codeeel.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.codeeel.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.codeeel.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.codeeel.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=247"}],"version-history":[{"count":1,"href":"https:\/\/www.codeeel.com\/index.php?rest_route=\/wp\/v2\/posts\/247\/revisions"}],"predecessor-version":[{"id":248,"href":"https:\/\/www.codeeel.com\/index.php?rest_route=\/wp\/v2\/posts\/247\/revisions\/248"}],"wp:attachment":[{"href":"https:\/\/www.codeeel.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=247"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.codeeel.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=247"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.codeeel.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=247"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}