{"id":40341,"date":"2023-09-19T20:01:53","date_gmt":"2023-01-20T16:21:19","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%bd%93%e4%bd%bf%e7%94%a8requestparam%e6%88%96modelattribute%e6%8e%a5%e6%94%b6%e4%b8%80%e4%b8%aa%e8%af%b7%e6%b1%82%e5%8f%82%e6%95%b0%e6%97%b6%e7%9a%84%e8%a1%8c%e4%b8%ba%e3%80%82\/"},"modified":"2024-05-04T00:34:03","modified_gmt":"2024-05-03T16:34:03","slug":"%e5%bd%93%e4%bd%bf%e7%94%a8requestparam%e6%88%96modelattribute%e6%8e%a5%e6%94%b6%e4%b8%80%e4%b8%aa%e8%af%b7%e6%b1%82%e5%8f%82%e6%95%b0%e6%97%b6%e7%9a%84%e8%a1%8c%e4%b8%ba%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%bd%93%e4%bd%bf%e7%94%a8requestparam%e6%88%96modelattribute%e6%8e%a5%e6%94%b6%e4%b8%80%e4%b8%aa%e8%af%b7%e6%b1%82%e5%8f%82%e6%95%b0%e6%97%b6%e7%9a%84%e8%a1%8c%e4%b8%ba%e3%80%82\/","title":{"rendered":"\u5f53\u4f7f\u7528@RequestParam\u6216@ModelAttribute\u63a5\u6536\u4e00\u4e2a\u8bf7\u6c42\u53c2\u6570\u65f6\u7684\u884c\u4e3a"},"content":{"rendered":"<h2>\u7b80\u8ff0<\/h2>\n<ul class=\"post-ul\">Spring Web MVC \u306e @RequestParam \u3084 @ModelAttribute \u3067\u30ea\u30af\u30a8\u30b9\u30c8\u30d1\u30e9\u30e1\u30fc\u30bf1\u3064\u3092\u53d7\u3051\u53d6\u3063\u305f\u3068\u304d\u306e\u6319\u52d5\u3092\u78ba\u8a8d\u3059\u308b\u30b5\u30f3\u30d7\u30eb\u3092\u793a\u3059<\/ul>\n<h2>\u9a8c\u8bc1\u6d3b\u52a8\u73af\u5883<\/h2>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Java 11 (AdoptOpenJDK 11.0.6+10)<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Gradle 6.2.2<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Spring Boot 2.2.5<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Spring Web MVC 5.2.4<\/ul>\n<h2>\u6f14\u793a\u63a7\u5236\u5668\u7684\u52a8\u4f5c\u786e\u8ba4\u793a\u4f8b\u4ee3\u7801 DemoController.java<\/h2>\n<pre class=\"post-pre\"><code><span class=\"kn\">package<\/span> <span class=\"nn\">com.example<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">org.springframework.boot.SpringApplication<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">org.springframework.boot.autoconfigure.SpringBootApplication<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">org.springframework.web.bind.annotation.ExceptionHandler<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">org.springframework.web.bind.annotation.GetMapping<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">org.springframework.web.bind.annotation.ModelAttribute<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">org.springframework.web.bind.annotation.RequestParam<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">org.springframework.web.bind.annotation.RestController<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"nd\">@SpringBootApplication<\/span>\r\n<span class=\"nd\">@RestController<\/span>\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">DemoController<\/span> <span class=\"o\">{<\/span>\r\n\r\n  <span class=\"kd\">public<\/span> <span class=\"kd\">static<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">main<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">args<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"nc\">SpringApplication<\/span><span class=\"o\">.<\/span><span class=\"na\">run<\/span><span class=\"o\">(<\/span><span class=\"nc\">DemoController<\/span><span class=\"o\">.<\/span><span class=\"na\">class<\/span><span class=\"o\">,<\/span> <span class=\"n\">args<\/span><span class=\"o\">);<\/span>\r\n  <span class=\"o\">}<\/span>\r\n\r\n  <span class=\"nd\">@GetMapping<\/span><span class=\"o\">(<\/span><span class=\"s\">\"\/request-param\"<\/span><span class=\"o\">)<\/span>\r\n  <span class=\"kd\">public<\/span> <span class=\"nc\">String<\/span> <span class=\"nf\">foo<\/span><span class=\"o\">(<\/span><span class=\"nd\">@RequestParam<\/span><span class=\"o\">(<\/span><span class=\"n\">name<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"myParam\"<\/span><span class=\"o\">)<\/span> <span class=\"nc\">String<\/span> <span class=\"n\">myParam<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"s\">\"myParam=[\"<\/span> <span class=\"o\">+<\/span> <span class=\"n\">myParam<\/span> <span class=\"o\">+<\/span> <span class=\"s\">\"]\\n\\n\"<\/span><span class=\"o\">;<\/span>\r\n  <span class=\"o\">}<\/span>\r\n\r\n  <span class=\"nd\">@GetMapping<\/span><span class=\"o\">(<\/span><span class=\"s\">\"\/model-attribute\"<\/span><span class=\"o\">)<\/span>\r\n  <span class=\"kd\">public<\/span> <span class=\"nc\">String<\/span> <span class=\"nf\">bar<\/span><span class=\"o\">(<\/span><span class=\"nd\">@ModelAttribute<\/span><span class=\"o\">(<\/span><span class=\"n\">name<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"myParam\"<\/span><span class=\"o\">)<\/span> <span class=\"nc\">String<\/span> <span class=\"n\">myParam<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"s\">\"myParam=[\"<\/span> <span class=\"o\">+<\/span> <span class=\"n\">myParam<\/span> <span class=\"o\">+<\/span> <span class=\"s\">\"]\\n\\n\"<\/span><span class=\"o\">;<\/span>\r\n  <span class=\"o\">}<\/span>\r\n\r\n  <span class=\"nd\">@ExceptionHandler<\/span>\r\n  <span class=\"kd\">public<\/span> <span class=\"nc\">String<\/span> <span class=\"nf\">handleError<\/span><span class=\"o\">(<\/span><span class=\"nc\">Throwable<\/span> <span class=\"n\">e<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"n\">e<\/span><span class=\"o\">.<\/span><span class=\"na\">toString<\/span><span class=\"o\">()<\/span> <span class=\"o\">+<\/span> <span class=\"s\">\"\\n\\n\"<\/span><span class=\"o\">;<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<h2>\u4f7f\u7528Gradle\u542f\u52a8Spring Boot<\/h2>\n<p>\u51c6\u5907\u4e00\u4e2abuild.gradle\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">plugins<\/span> <span class=\"o\">{<\/span>\r\n  <span class=\"n\">id<\/span> <span class=\"s1\">'org.springframework.boot'<\/span> <span class=\"n\">version<\/span> <span class=\"s1\">'2.2.5.RELEASE'<\/span>\r\n  <span class=\"n\">id<\/span> <span class=\"s1\">'io.spring.dependency-management'<\/span> <span class=\"n\">version<\/span> <span class=\"s1\">'1.0.9.RELEASE'<\/span>\r\n  <span class=\"n\">id<\/span> <span class=\"s1\">'java'<\/span>\r\n<span class=\"o\">}<\/span>\r\n\r\n<span class=\"n\">group<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'com.example'<\/span>\r\n<span class=\"n\">version<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'0.0.1'<\/span>\r\n<span class=\"n\">sourceCompatibility<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'11'<\/span>\r\n\r\n<span class=\"n\">repositories<\/span> <span class=\"o\">{<\/span>\r\n  <span class=\"n\">mavenCentral<\/span><span class=\"o\">()<\/span>\r\n<span class=\"o\">}<\/span>\r\n\r\n<span class=\"n\">dependencies<\/span> <span class=\"o\">{<\/span>\r\n  <span class=\"n\">implementation<\/span> <span class=\"s1\">'org.springframework.boot:spring-boot-starter-web'<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u4f7f\u7528gradle bootRun\u547d\u4ee4\u542f\u52a8Spring Boot\u3002<\/p>\n<pre class=\"post-pre\"><code>$ gradle bootRun\r\n\r\n&gt; Task :bootRun\r\n\r\n  .   ____          _            __ _ _\r\n \/\\\\ \/ ___'_ __ _ _(_)_ __  __ _ \\ \\ \\ \\\r\n( ( )\\___ | '_ | '_| | '_ \\\/ _` | \\ \\ \\ \\\r\n \\\\\/  ___)| |_)| | | | | || (_| |  ) ) ) )\r\n  '  |____| .__|_| |_|_| |_\\__, | \/ \/ \/ \/\r\n =========|_|==============|___\/=\/_\/_\/_\/\r\n :: Spring Boot ::        (v2.2.5.RELEASE)\r\n<\/code><\/pre>\n<h2>\u4f7f\u7528curl\u53d1\u9001\u8bf7\u6c42<\/h2>\n<p>\u51c6\u5907\u4e00\u4e2a\u540d\u4e3aa.sh\u7684\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>curl http:\/\/localhost:8080\/request-param\r\ncurl http:\/\/localhost:8080\/request-param?myParam\r\ncurl http:\/\/localhost:8080\/request-param?myParam<span class=\"o\">=<\/span>hello\r\ncurl http:\/\/localhost:8080\/request-param?myParam<span class=\"o\">=<\/span>%20%20%20\r\ncurl http:\/\/localhost:8080\/request-param?myParam<span class=\"o\">=<\/span>+++\r\ncurl http:\/\/localhost:8080\/request-param?myParam<span class=\"o\">=<\/span>%20%20Hello%20World%20%20\r\ncurl http:\/\/localhost:8080\/request-param?myParam<span class=\"o\">=<\/span>++Hello+World++\r\ncurl http:\/\/localhost:8080\/model-attribute\r\ncurl http:\/\/localhost:8080\/model-attribute?myParam\r\ncurl http:\/\/localhost:8080\/model-attribute?myParam<span class=\"o\">=<\/span>hello\r\ncurl http:\/\/localhost:8080\/model-attribute?myParam<span class=\"o\">=<\/span>%20%20%20\r\ncurl http:\/\/localhost:8080\/model-attribute?myParam<span class=\"o\">=<\/span>+++\r\ncurl http:\/\/localhost:8080\/model-attribute?myParam<span class=\"o\">=<\/span>%20%20Hello%20World%20%20\r\ncurl http:\/\/localhost:8080\/model-attribute?myParam<span class=\"o\">=<\/span>++Hello+World++\r\n<\/code><\/pre>\n<p>\u901a\u8fc7sh -x\u6267\u884c\u3002<\/p>\n<pre class=\"post-pre\"><code>$ sh -x a.sh \r\n+ curl http:\/\/localhost:8080\/request-param\r\norg.springframework.web.bind.MissingServletRequestParameterException: Required String parameter 'myParam' is not present\r\n\r\n+ curl 'http:\/\/localhost:8080\/request-param?myParam'\r\nmyParam=[]\r\n\r\n+ curl 'http:\/\/localhost:8080\/request-param?myParam=hello'\r\nmyParam=[hello]\r\n\r\n+ curl 'http:\/\/localhost:8080\/request-param?myParam=%20%20%20'\r\nmyParam=[   ]\r\n\r\n+ curl 'http:\/\/localhost:8080\/request-param?myParam=+++'\r\nmyParam=[   ]\r\n\r\n+ curl 'http:\/\/localhost:8080\/request-param?myParam=%20%20Hello%20World%20%20'\r\nmyParam=[  Hello World  ]\r\n\r\n+ curl 'http:\/\/localhost:8080\/request-param?myParam=++Hello+World++'\r\nmyParam=[  Hello World  ]\r\n\r\n+ curl http:\/\/localhost:8080\/model-attribute\r\nmyParam=[]\r\n\r\n+ curl 'http:\/\/localhost:8080\/model-attribute?myParam'\r\nmyParam=[]\r\n\r\n+ curl 'http:\/\/localhost:8080\/model-attribute?myParam=hello'\r\nmyParam=[hello]\r\n\r\n+ curl 'http:\/\/localhost:8080\/model-attribute?myParam=%20%20%20'\r\nmyParam=[]\r\n\r\n+ curl 'http:\/\/localhost:8080\/model-attribute?myParam=+++'\r\nmyParam=[]\r\n\r\n+ curl 'http:\/\/localhost:8080\/model-attribute?myParam=%20%20Hello%20World%20%20'\r\nmyParam=[  Hello World  ]\r\n\r\n+ curl 'http:\/\/localhost:8080\/model-attribute?myParam=++Hello+World++'\r\nmyParam=[  Hello World  ]\r\n<\/code><\/pre>\n<h2>\u52a8\u4f5c<\/h2>\n<h3>&#8220;\u5173\u4e8e@RequestParam(name = &#8220;myParam&#8221;)\u7684\u884c\u4e3a&#8221;<\/h3>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30d1\u30e9\u30e1\u30fc\u30bf\u540d\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408: MissingServletRequestParameterException \u4f8b\u5916\u304c\u767a\u751f<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30d1\u30e9\u30e1\u30fc\u30bf\u5024\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408: \u5f15\u6570\u306b\u7a7a\u6587\u5b57\u5217\u304c\u30bb\u30c3\u30c8\u3055\u308c\u308b<\/ul>\n<h3>@ModelAttribute(name = &#8220;myParam&#8221;) \u7684\u884c\u4e3a\u5982\u4f55\uff1f<\/h3>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30d1\u30e9\u30e1\u30fc\u30bf\u540d\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408: \u5f15\u6570\u306b\u7a7a\u6587\u5b57\u5217\u304c\u30bb\u30c3\u30c8\u3055\u308c\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30d1\u30e9\u30e1\u30fc\u30bf\u5024\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408: \u5f15\u6570\u306b\u7a7a\u6587\u5b57\u5217\u304c\u30bb\u30c3\u30c8\u3055\u308c\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30d1\u30e9\u30e1\u30fc\u30bf\u5024\u304c\u534a\u89d2\u7a7a\u767d\u6587\u5b57\u306e\u307f\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u308b\u5834\u5408: \u5f15\u6570\u306b\u7a7a\u6587\u5b57\u5217\u304c\u30bb\u30c3\u30c8\u3055\u308c\u308b<\/ul>\n<h2>\u53c2\u8003\u8d44\u6599<\/h2>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u5165\u9580 | Spring MVC \u3067 Web \u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u63d0\u4f9b &#8211; \u30b3\u30fc\u30c9\u30b5\u30f3\u30d7\u30eb<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">RequestParam (Spring Framework 5.2.4.RELEASE API) &#8211; Javadoc \u65e5\u672c\u8a9e\u8a33<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">ModelAttribute (Spring Framework 5.2.4.RELEASE API) &#8211; Javadoc \u65e5\u672c\u8a9e\u8a33<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">ExceptionHandler (Spring Framework 5.2.4.RELEASE API) &#8211; Javadoc \u65e5\u672c\u8a9e\u8a33<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">7.1.11. \u30a8\u30e9\u30fc\u51e6\u7406 &#8211; Spring Boot \u306e\u6a5f\u80fd &#8211; \u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u65e5\u672c\u8a9e\u8a33<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u6280\u8853\/HTTP\/URL\u30a8\u30f3\u30b3\u30fc\u30c9\u3067 0x20(\u30b9\u30da\u30fc\u30b9) \u3092 &#8220;+&#8221; \u306b\u3059\u3079\u304d\u304b &#8220;%20&#8221; \u306b\u3059\u3079\u304d\u304b &#8211; Glamenv-Septzen.net<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u8ff0 Spring Web MVC \u306e @RequestParam \u3084 @ModelAttribute \u3067\u30ea\u30af [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-40341","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ 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