{"id":8585,"date":"2022-11-17T19:29:12","date_gmt":"2022-11-17T11:29:12","guid":{"rendered":"http:\/\/123.57.164.21\/?p=8585"},"modified":"2022-11-17T19:32:37","modified_gmt":"2022-11-17T11:32:37","slug":"%e6%b3%a8%e8%a7%a3-pathvariable-%e4%b8%8e-requestparam-%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/92it.top\/?p=8585","title":{"rendered":"\u6ce8\u89e3 @PathVariable \u4e0e @RequestParam \u8be6\u89e3"},"content":{"rendered":"\n<p><strong>@PathVariable\u548c@RequestParam<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u9996\u5148\u8bf4\u4e00\u4e0bRequest\u4e86\u89e3\u4e00\u4e0b\u8bf7\u6c42\u53c2\u6570\u662f\u4ec0\u4e48\uff1f<\/p>\n\n\n\n<p>\u5728\u8bbf\u95ee\u5404\u79cd\u5404\u6837\u7f51\u7ad9\u65f6\uff0c\u7ecf\u5e38\u4f1a\u53d1\u73b0\u7f51\u7ad9\u7684URL\u7684\u6700\u540e\u4e00\u90e8\u5206\u5f62\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">http:\/\/abc.def.com?xxxx=yyyy&amp;zzzz=wwww<\/pre>\n\n\n\n<p>\u8fd9\u5c31\u662fHTTP\u534f\u8bae\u4e2d\u7684Request\u53c2\u6570\uff0c\u5b83\u6709\u4ec0\u4e48\u7528\u5462\uff1f<\/p>\n\n\n\n<p>\u5148\u6765\u770b\u4e00\u4e2a\u4f8b\u5b50\uff1a<\/p>\n\n\n\n<ul><li>\u5728\u77e5\u4e4e\u4e2d\u641c\u7d22web<\/li><li>\u6d4f\u89c8\u5668\u8df3\u8f6c\u5230\u65b0\u9875\u9762\u540e\uff0cURL\u53d8\u4e3ahttps:\/\/www.zhihu.com\/search?<strong>type=content&amp;q=web<\/strong><\/li><\/ul>\n\n\n\n<p>\u8fd9\u91cctype=content&amp;q=web\u5c31\u662f\u641c\u7d22\u8bf7\u6c42\u7684\u53c2\u6570\uff0c\u4e0d\u540c\u53c2\u6570\u4e4b\u95f4\u7528&amp;\u5206\u9694\uff0c\u6bcf\u4e2a\u53c2\u6570\u5f62\u5982<strong>name=value<\/strong>\u5f62\u5f0f\uff0c\u5206\u522b\u8868\u793a\u53c2\u6570\u540d\u5b57\u548c\u53c2\u6570\u503c\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u8f93\u5165\u4e0d\u540c\u7684\u641c\u7d22\u5173\u952e\u8bcd\uff0c\u5728\u641c\u7d22\u7ed3\u679c\u9875\u9762\u7684URL\u7684q\u53c2\u6570\u662f\u4e0d\u540c\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0cHTTP\u53c2\u6570\u5b9e\u9645\u4e0a\u53ef\u4ee5\u8ba4\u4e3a\u662f\u4e00\u79cd\u7528\u6237\u7684\u8f93\u5165\uff0c\u6839\u636e\u4e0d\u540c\u7684\u7528\u6237\u8f93\u5165\uff0c\u670d\u52a1\u5668\u7ecf\u8fc7\u5904\u7406\u540e\u8fd4\u56de\u4e0d\u540c\u7684\u8f93\u51fa\uff08\u4f8b\u5982\u641c\u7d22spring\u548c\u641c\u7d22java\uff0c\u663e\u793a\u7ed3\u679c\u662f\u4e0d\u4e00\u6837\u7684\u3002\uff09<\/p>\n\n\n\n<p><strong>@RequestParam<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>@RequestParam \u548c @PathVariable \u6ce8\u89e3\u662f\u7528\u4e8e\u4ecerequest\u4e2d\u63a5\u6536\u8bf7\u6c42\u7684\u3002<\/p>\n\n\n\n<p>\u4e24\u4e2a\u90fd\u53ef\u4ee5\u63a5\u6536\u53c2\u6570\uff0c\u5173\u952e\u70b9\u4e0d\u540c\u7684\u662f@RequestParam \u662f\u4ecerequest\u91cc\u9762\u62ff\u53d6\u503c\uff0c\u800c @PathVariable \u662f\u4ece\u4e00\u4e2aURI\u6a21\u677f\u91cc\u9762\u6765\u586b\u5145\u3002<\/p>\n\n\n\n<p>\u770b\u4e0b\u9762\u4e00\u6bb5\u4ee3\u7801\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">http:\/\/localhost:8080\/springmvc\/hello\/101?param1=10\u00b6m2=20<\/pre>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\u6839\u636e\u4e0a\u9762\u7684\u8fd9\u4e2aURL\uff0c\u4f60\u53ef\u4ee5\u7528\u8fd9\u6837\u7684\u65b9\u5f0f\u6765\u8fdb\u884c\u83b7\u53d6\n\npublic String getDetails(\n    @RequestParam(value=\"param1\", required=true) String param1,\n        @RequestParam(value=\"param2\", required=false) String param2){\n...\n}<\/pre>\n\n\n\n<p>RequestParam \u652f\u6301\u4e0b\u9762\u56db\u79cd\u53c2\u6570\uff1a<\/p>\n\n\n\n<ul><li>defaultValue \u5982\u679c\u672c\u6b21\u8bf7\u6c42\u6ca1\u6709\u643a\u5e26\u8fd9\u4e2a\u53c2\u6570\uff0c\u6216\u8005\u53c2\u6570\u4e3a\u7a7a\uff0c\u90a3\u4e48\u5c31\u4f1a\u542f\u7528\u9ed8\u8ba4\u503c<\/li><li>name \u7ed1\u5b9a\u672c\u6b21\u53c2\u6570\u7684\u540d\u79f0\uff0c\u8981\u8ddfURL\u4e0a\u9762\u7684\u4e00\u6837<\/li><li>required \u8fd9\u4e2a\u53c2\u6570\u662f\u4e0d\u662f\u5fc5\u987b\u7684<\/li><li>value \u8ddfname\u4e00\u6837\u7684\u4f5c\u7528\uff0c\u662fname\u5c5e\u6027\u7684\u4e00\u4e2a\u522b\u540d<\/li><\/ul>\n\n\n\n<p>RequestParam\u4e0d\u52a0\u7684\u60c5\u51b5\uff1a<\/p>\n\n\n\n<ul><li>\u524d\u7aef\u7684\u53c2\u6570\u540d\u9700\u8981\u548c\u540e\u7aef\u63a7\u5236\u5668\u7684\u53d8\u91cf\u540d\u4fdd\u6301\u4e00\u81f4\u624d\u80fd\u751f\u6548<\/li><li>\u4e0d\u52a0@RequestParam\u53c2\u6570\u4e3a\u975e\u5fc5\u4f20<\/li><\/ul>\n\n\n\n<p>RequestParam\u52a0\u7684\u60c5\u51b5\uff1a<\/p>\n\n\n\n<ul><li>\u9ed8\u8ba4\u4e3a\u5fc5\u4f20\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7required\u8bbe\u7f6e\u4e3afalse\u6307\u5b9a\u4e3a\u975e\u5fc5\u4f20<\/li><li>\u540c\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7value=&#8221;name&#8221;\u7684\u5f62\u5f0f\u6307\u5b9a\u53c2\u6570\u540d<\/li><li>\u4e5f\u53ef\u4ee5\u901a\u8fc7\uff0cdefualtValue\u6307\u5b9a\u9ed8\u8ba4\u53c2\u6570\u503c<\/li><\/ul>\n\n\n\n<p><strong>@PathVariable<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<ul><li>@PathVariable\u7ed1\u5b9aURI\u6a21\u677f\u53d8\u91cf\u503c<\/li><li>@PathVariable\u662f\u7528\u6765\u83b7\u5f97\u8bf7\u6c42url\u4e2d\u7684\u52a8\u6001\u53c2\u6570\u7684<\/li><li>@PathVariable\u7528\u4e8e\u5c06\u8bf7\u6c42URL\u4e2d\u7684\u6a21\u677f\u53d8\u91cf\u6620\u5c04\u5230\u529f\u80fd\u5904\u7406\u65b9\u6cd5\u7684\u53c2\u6570\u4e0a<\/li><li>\u5b9a\u4e49\uff1aPathVariable \u6620\u5c04 URL \u7ed1\u5b9a\u7684\u5360\u4f4d\u7b26<\/li><li>\u5e26\u5360\u4f4d\u7b26\u7684 URL \u662f Spring3.0 \u65b0\u589e\u7684\u529f\u80fd\uff0c\u8be5\u529f\u80fd\u5728SpringMVC \u5411 REST \u76ee\u6807\u633a\u8fdb\u53d1\u5c55\u8fc7\u7a0b\u4e2d\u5177\u6709\u91cc\u7a0b\u7891\u7684\u610f\u4e49<\/li><li>\u901a\u8fc7 @PathVariable \u53ef\u4ee5\u5c06 URL \u4e2d\u5360\u4f4d\u7b26\u53c2\u6570\u7ed1\u5b9a\u5230\u63a7\u5236\u5668\u5904\u7406\u65b9\u6cd5\u7684\u5165\u53c2\u4e2d\uff1aURL \u4e2d\u7684 {xxx} \u5360\u4f4d\u7b26\u53ef\u4ee5\u901a\u8fc7@PathVariable(\u201cxxx\u201c) \u7ed1\u5b9a\u5230\u64cd\u4f5c\u65b9\u6cd5\u7684\u5165\u53c2\u4e2d\u3002<\/li><li>\u5176url\u7684\u4e66\u5199\u5f62\u5f0f\u4e3a<\/li><\/ul>\n\n\n\n<pre class=\"wp-block-preformatted\">localhost:8080\/user\/admin #\u5176\u4e2d\u83b7\u53d6\u5360\u4f4d\u7b26\u7684\u503c=admin<\/pre>\n\n\n\n<p>\u8fd9\u4e2a\u6ce8\u89e3\u80fd\u591f\u8bc6\u522bURL\u91cc\u9762\u7684\u4e00\u4e2a\u6a21\u677f\uff0c\u6211\u4eec\u770b\u4e0b\u9762\u7684\u4e00\u4e2aURL<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">http:\/\/localhost:8080\/springmvc\/hello\/101?param1=10&amp;param2=20<\/pre>\n\n\n\n<p>\u4e0a\u9762\u7684\u4e00\u4e2aurl\u4f60\u53ef\u4ee5\u8fd9\u6837\u5199\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">@RequestMapping(\"\/hello\/{id}\")\n    public String getDetails(@PathVariable(value=\"id\") String id,\n    @RequestParam(value=\"param1\", required=true) String param1,\n    @RequestParam(value=\"param2\", required=false) String param2){\n.......\n}<\/pre>\n\n\n\n<p>\u76f8\u4fe1\u5927\u5bb6\u53ef\u80fd\u6ce8\u610f\u5230\u4e86\uff0c@RequestParam\u548c@PathVariable\u90fd\u80fd\u591f\u5b8c\u6210\u7c7b\u4f3c\u7684\u529f\u80fd\u2014\u2014\u56e0\u4e3a\u672c\u8d28\u4e0a\uff0c\u5b83\u4eec\u90fd\u662f\u7528\u6237\u7684\u8f93\u5165\uff0c\u53ea\u4e0d\u8fc7\u8f93\u5165\u7684\u90e8\u5206\u4e0d\u540c\uff0c\u4e00\u4e2a\u5728URL\u8def\u5f84\u90e8\u5206\uff0c\u53e6\u4e00\u4e2a\u5728\u53c2\u6570\u90e8\u5206\uff0c\u7b80\u5355\u7684\u8bf4\u5c31\u662furl\u5199\u6cd5\u4e0d\u540c\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul><li>\u4f7f\u7528@RequestParam\u65f6\uff0cURL\u662f\u8fd9\u6837\u7684\uff1ahttp:\/\/host:port\/path?\u53c2\u6570\u540d=\u53c2\u6570\u503c<\/li><li>\u4f7f\u7528@PathVariable\u65f6\uff0cURL\u662f\u8fd9\u6837\u7684\uff1ahttp:\/\/host:port\/path\/\u53c2\u6570\u503c<\/li><\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">  @RequestMapping(value=\"\/user\",method\u00a0=\u00a0RequestMethod.GET)\u00a0\n  @ResponseBody\u00a0\u00a0\u00a0\n\u00a0\u00a0\u00a0public\u00a0User\u00a0printUser(@RequestParam(value\u00a0=\u00a0\"id\",\u00a0required\u00a0=\u00a0false,\u00a0defaultValue\u00a0=\u00a0\"0\")\u00a0\u00a0int\u00a0id)\u00a0{\u00a0\u00a0\n\u00a0\u00a0\u00a0\u00a0User\u00a0user\u00a0=\u00a0new\u00a0User();\u00a0\u00a0\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0user\u00a0=\u00a0userService.getUserById(id);\u00a0\u00a0\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0user;\u00a0\u00a0\n\u00a0\u00a0\u00a0}\u00a0\u00a0\n<\/pre>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">GetMapping(\"\/edit\/{userId}\")\npublic String edit(@PathVariable(\"userId\") Long userId, Model model)\n{\n    User user = userService.selectUserById(userId);\n    List&lt;Role> roles = roleService.selectRolesByUserId(userId);\n    List&lt;Post> posts = postService.selectPostsByUserId(userId);\n    model.addAttribute(\"roles\", roles);\n    model.addAttribute(\"posts\", posts);\n    model.addAttribute(\"user\", user);\n    return prefix + \"\/edit\";\n}<\/pre>\n\n\n\n<p>\u4e00\u65e6\u6211\u4eec\u5728\u65b9\u6cd5\u4e2d\u5b9a\u4e49\u4e86@RequestParam\u53d8\u91cf\uff0c\u5982\u679c\u8bbf\u95ee\u7684URL\u4e2d\u4e0d\u5e26\u6709\u76f8\u5e94\u7684\u53c2\u6570\uff0c\u5c31\u4f1a\u629b\u51fa\u5f02\u5e38\u2014\u2014\u8fd9\u662f\u663e\u7136\u7684\uff0cSpring\u5c1d\u8bd5\u5e2e\u6211\u4eec\u8fdb\u884c\u7ed1\u5b9a\uff0c\u7136\u800c\u6ca1\u6709\u6210\u529f\u3002\u4f46\u6709\u7684\u65f6\u5019\uff0c\u53c2\u6570\u786e\u5b9e\u4e0d\u4e00\u5b9a\u6c38\u8fdc\u90fd\u5b58\u5728\uff0c\u8fd9\u662f\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5b9a\u4e49required\u5c5e\u6027\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">@RequestParam(name=\"id\",required=false)<\/pre>\n\n\n\n<p>\u5f53\u7136\uff0c\u5728\u53c2\u6570\u4e0d\u5b58\u5728\u7684\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u5e0c\u671b\u53d8\u91cf\u6709\u4e00\u4e2a\u9ed8\u8ba4\u503c\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">@RequestParam(name=\"id\", required=false, defaultValue=\"0\")<\/pre>\n\n\n\n<p>\u8865\u5145\uff1a<\/p>\n\n\n\n<ul><li>@PathParam<\/li><\/ul>\n\n\n\n<p>\u8fd9\u4e2a\u6ce8\u89e3\u662f\u548cspring\u7684pathVariable\u662f\u4e00\u6837\u7684\uff0c\u4e5f\u662f\u57fa\u4e8e\u6a21\u677f\u7684\uff0c\u4f46\u662f\u8fd9\u4e2a\u662fjboss\u5305\u4e0b\u9762\u7684\u4e00\u4e2a\u5b9e\u73b0\uff0c\u4e0a\u9762\u7684\u662fspring\u7684\u4e00\u4e2a\u5b9e\u73b0\uff0c\u90fd\u8981\u5bfc\u5305<\/p>\n\n\n\n<ul><li>@QueryParam<\/li><\/ul>\n\n\n\n<p>@QueryParam \u662f JAX-RS \u672c\u6765\u5c31\u63d0\u4f9b\u7684\uff0c\u548cSpring\u7684RequestParam\u4f5c\u7528\u4e00\u81f4<\/p>\n","protected":false},"excerpt":{"rendered":"<p>@PathVariable\u548c@RequestParam \u9996\u5148\u8bf4\u4e00\u4e0bRequest\u4e86\u89e3\u4e00\u4e0b\u8bf7\u6c42\u53c2\u6570\u662f\u4ec0\u4e48\uff1f \u5728\u8bbf [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26,27],"tags":[],"_links":{"self":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/8585"}],"collection":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=8585"}],"version-history":[{"count":7,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/8585\/revisions"}],"predecessor-version":[{"id":8593,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/8585\/revisions\/8593"}],"wp:attachment":[{"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8585"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8585"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8585"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}