{"id":2251,"date":"2022-12-08T13:25:19","date_gmt":"2022-12-08T05:25:19","guid":{"rendered":"https:\/\/qaqaq.top\/?p=2251"},"modified":"2022-12-08T13:25:20","modified_gmt":"2022-12-08T05:25:20","slug":"parameterattribute%e7%9a%84%e5%8c%ba%e5%88%ab","status":"publish","type":"post","link":"https:\/\/qaqaq.top\/?p=2251","title":{"rendered":"Parameter&#038;Attribute\u7684\u533a\u522b"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u672c\u8d28\u7684\u533a\u522b<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Parameter\u662f\u53c2\u6570\uff0c\u672c\u8d28\u4e0a\u662f\u5b57\u7b26\u4e32String\uff0c<br>\u5bf9\u5176\u64cd\u4f5c\u7684\u65b9\u6cd5\u53ea\u6709getParameter(\u201c\u53c2\u6570\u540d\u201d)<\/li><li>Attribute\u662f\u5c5e\u6027\uff0c\u672c\u8d28\u4e0a\u662f\u5bf9\u8c61Object\uff0c<br>\u5bf9\u5176\u64cd\u4f5c\u7684\u65b9\u6cd5\u6709setAttribute(\u201c\u5c5e\u6027\u540d\u201d\uff0c\u5c5e\u6027)\u548cgetAttribute(\u201c\u5c5e\u6027\u540d\u201d)<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u5bf9\u8c61\u7684\u533a\u522b<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>\u5bf9Parameter\u8fdb\u884c\u64cd\u4f5c\u7684\u5bf9\u8c61\u53ea\u80fd\u662frequest\u5bf9\u8c61\uff0cParameter\u7531\u524d\u7aefform\u8868\u5355\u63d0\u4ea4\u6216\u8005url\u4f20\u503c\u7684\u65b9\u6cd5\u653e\u5165request\u3002<\/li><li>\u5bf9Attribute\u8fdb\u884c\u64cd\u4f5c\u7684\u5bf9\u8c61\u53ef\u4ee5\u662frequest\u5bf9\u8c61\u3001session\u5bf9\u8c61\u8fd8\u53ef\u4ee5\u662fservletContext\u5bf9\u8c61\uff0c\u5176\u533a\u522b\u5728\u4e8e\u5404\u81ea\u7684\u4f5c\u7528\u57df\u4e0d\u540c\uff0c\u76f8\u4e92\u4e4b\u95f4\u4e92\u4e0d\u5f71\u54cd\uff0c\u5728\u6307\u4ee3\u4e0d\u660e\u7684\u60c5\u51b5\u4e0b\u4f1a\u6709\u76f8\u4e92\u66ff\u4ee3\u7684\u53ef\u80fd\uff0c\u5982\u4f7f\u7528el\u8868\u8fbe\u5f0f\u65f6\u3002<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u65b9\u6cd5\u7684\u533a\u522b<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Parameter\u53ea\u6709getParameter(\u201c\u53c2\u6570\u540d\u201d)\u65b9\u6cd5\uff0c\u800c\u6ca1\u6709setParameter()\u65b9\u6cd5\uff0c\u8981\u8bbe\u7f6eParameter\u53c2\u6570\u7684\u503c\u53ea\u80fd\u662f\u7531\u524d\u7aefform\u8868\u5355\u63d0\u4ea4\u6216\u8005url\u4f20\u503c\uff08\uff1fid=admin&amp;pwd=000&amp;\u53c2\u6570\u540d=\u53c2\u6570\u503c\uff09\u7684\u65b9\u6cd5\u3002<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>1<br>2<br>3<br>4<br>5<\/td><td>&lt;!&#8211;form\u8868\u5355\u4f20\u503c&#8211;&gt;<br>&lt;form&gt;<br>&nbsp; &nbsp; &lt;input type=&#8221;text&#8221; name=&#8221;id&#8221; value=&#8221;admin&#8221; \/&gt;<br>&nbsp; &nbsp; &lt;input type=&#8221;text&#8221; name=&#8221;\u53c2\u6570\u540d&#8221; value=&#8221;\u53c2\u6570\u503c\u4e3a\u8f93\u5165\u6846\u4e2d\u5b9e\u9645\u8f93\u5165\u7684\u5185\u5bb9&#8221; \/&gt;<br>&lt;\/form&gt;<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><ins><\/ins><\/p>\n\n\n\n<p>getParameter(\u201c\u53c2\u6570\u540d\u201d)\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u662fString\u7c7b\u578b\uff0c\u82e5\u4e0d\u5b58\u8be5\u53c2\u6570\u540d\u5219\u8fd4\u56denull<br>url\u4f20\u503c\u65f6\u7528\uff1f\u540e\u7f00\u5728url\u4e4b\u540e\uff0c\u4ee5\u952e\u503c\u5bf9\u7684\u65b9\u5f0f\u4f20\u503c\uff0c\u591a\u4e2a\u952e\u503c\u5bf9\u4e4b\u95f4\u7528&amp;\u8fde\u63a5<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Attribute\u540c\u65f6\u6709getAttribute(\u201c\u5c5e\u6027\u540d\u201d)\u65b9\u6cd5\u548csetAttribute(\u201c\u5c5e\u6027\u540d\u201d\uff0c\u5c5e\u6027)\u7684\u65b9\u6cd5\uff0c\u5176\u53ef\u4ee5\u88abrequest\u5bf9\u8c61\u3001session\u5bf9\u8c61\u548cservletContext\u5bf9\u8c61\u8c03\u7528\uff0c\u5f53\u5bf9\u8c61\u8c03\u7528getAttribute()\u65b9\u6cd5\u65f6\uff0c\u53ea\u80fd\u83b7\u53d6\u76f8\u540c\u5bf9\u8c61\u4f7f\u7528setAttribute()\u65b9\u6cd5\u8bbe\u7f6e\u7684\u5c5e\u6027\u5bf9\u8c61\u3002<br>\u5176\u4f5c\u7528\u57df\u6709\u5305\u542b\u5173\u7cfbservletContext\uff08session\uff08request\uff09\uff09\uff0c\u5f53\u5728\u524d\u7aef\u4f7f\u7528el\u8868\u8fbe\u5f0f\u83b7\u53d6\u5c5e\u6027\u65f6,\u5c06\u7531\u4f5c\u7528\u57df\u4ece\u5c0f\u5230\u5927\u627e\u5bfb\u5bf9\u5e94\u7684\u5c5e\u6027\uff0c\u4e5f\u5c31\u662f\u524d\u7aef\u5982\u679c\u60f3\u8981\u83b7\u53d6session\u8bbe\u7f6e\u7684\u5c5e\u6027obj1\uff0c\u4f46\u662f\u6070\u5de7request\u4e5f\u8bbe\u7f6e\u4e86\u540d\u4e3aobj1\u7684\u5c5e\u6027\uff0c\u90a3\u4e48\u5c06\u83b7\u53d6\u5230request\u8bbe\u7f6e\u7684obj1\u5c5e\u6027\u3002<br>getAttribute(\u201c\u5c5e\u6027\u540d\u201d)\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u662fobject\u7c7b\u578b\uff0c\u82e5\u4e0d\u5b58\u5728\u8be5\u5c5e\u6027\u540c\u6837\u8fd4\u56denull<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u4f5c\u7528\u57df\u7684\u533a\u522b<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Parameter\u53ea\u5728request\u7684\u4f5c\u7528\u57df\u4e2d\u6709\u6548\uff0c\u4e5f\u5c31\u662f\u4e00\u65e6\u53d1\u751f\u65b0\u7684\u8bf7\u6c42\uff0c\u539f\u6765\u7684\u8bf7\u6c42\u4e2d\u7684\u53c2\u6570\u4e5f\u90fd\u968f\u7740\u539frequest\u7684\u5931\u6548\u800c\u5931\u6548\u3002<\/li><li>Attribute\u6709\u4e09\u4e2a\u4e0d\u540c\u7684\u4f5c\u7528\u57df\uff0c\u5176\u4e5f\u4f1a\u5728\u5176\u5404\u81ea\u4f5c\u7528\u57df\u5931\u6548\u7684\u540c\u65f6\u800c\u5931\u6548\uff0c\u4f46\u65e0\u7591\u591a\u4e86\u66f4\u591a\u9009\u62e9\u3002<br>\u6bd4\u5982session1\u4e0b\u7684request1\u4e2d\u83b7\u53d6\u5230\u4e86\u4e00\u4e2a\u5c5e\u6027obj1\uff0c\u5e76\u5c06\u5176\u5b58\u5165\u4e86session1\u4e2d\uff0c\u4e8e\u662f\u5373\u4f7frequest1\u88ab\u9500\u6bc1\u800c\u5931\u6548\uff0csession1\u4e0b\u7684\u5176\u4ed6request\u6bd4\u5982\u4e5f\u53ef\u4ee5\u83b7\u53d6session1\u4e2d\u7684\u5c5e\u6027obj1\u8fdb\u884c\u8fdb\u884c\u64cd\u4f5c\u3002<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u8d28\u7684\u533a\u522b Parameter\u662f\u53c2\u6570\uff0c\u672c\u8d28\u4e0a\u662f\u5b57\u7b26\u4e32String\uff0c\u5bf9\u5176\u64cd\u4f5c\u7684\u65b9\u6cd5\u53ea\u6709getParameter( [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[60],"tags":[61],"class_list":["post-2251","post","type-post","status-publish","format-standard","hentry","category-javaweb-","tag-javaweb"],"_links":{"self":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/2251"}],"collection":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2251"}],"version-history":[{"count":1,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/2251\/revisions"}],"predecessor-version":[{"id":2252,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/2251\/revisions\/2252"}],"wp:attachment":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2251"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2251"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2251"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}