{"id":1144,"date":"2026-01-01T19:15:41","date_gmt":"2026-01-01T11:15:41","guid":{"rendered":"https:\/\/www.52runoob.com\/?p=1144"},"modified":"2026-01-01T19:15:41","modified_gmt":"2026-01-01T11:15:41","slug":"%e8%a7%a3%e5%86%b3http-400%e9%94%99%e8%af%af","status":"publish","type":"post","link":"https:\/\/www.52runoob.com\/index.php\/2026\/01\/01\/%e8%a7%a3%e5%86%b3http-400%e9%94%99%e8%af%af\/","title":{"rendered":"\u89e3\u51b3http 400\u9519\u8bef"},"content":{"rendered":"\n<p>\u597d\u7684\uff0c\u6211\u4eec\u6765\u7cfb\u7edf\u8bb2\u89e3 <strong>HTTP 400 \u9519\u8bef\uff08Bad Request\uff09<\/strong> \u7684\u539f\u56e0\u3001\u6392\u67e5\u65b9\u6cd5\u4ee5\u53ca\u89e3\u51b3\u65b9\u6848\u3002\u4e3a\u4e86\u6e05\u6670\uff0c\u6211\u4f1a\u5206\u6b65\u9aa4\u8bb2\u89e3\uff0c\u5e76\u7ed9\u51fa\u5b9e\u6218\u5efa\u8bae\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">HTTP 400 \u9519\u8bef\u8be6\u89e3\u4e0e\u89e3\u51b3\u65b9\u6848<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">1\ufe0f\u20e3 \u4ec0\u4e48\u662f HTTP 400 \u9519\u8bef\uff1f<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>HTTP 400<\/strong> \u5373 <strong>Bad Request<\/strong>\uff0c\u8868\u793a\u5ba2\u6237\u7aef\u5411\u670d\u52a1\u5668\u53d1\u9001\u7684\u8bf7\u6c42 <strong>\u8bed\u6cd5\u9519\u8bef\u6216\u65e0\u6cd5\u88ab\u670d\u52a1\u5668\u7406\u89e3<\/strong>\u3002<\/li>\n\n\n\n<li>\u670d\u52a1\u5668\u65e0\u6cd5\u5904\u7406\u8bf7\u6c42\u65f6\uff0c\u4f1a\u8fd4\u56de 400 \u9519\u8bef\uff0c\u5e76\u901a\u5e38\u4f34\u968f\u63d0\u793a\u4fe1\u606f\uff08\u4f8b\u5982 \u201cBad Request\u201d\u3001\u201c\u8bf7\u6c42\u65e0\u6548\u201d\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u7b80\u5355\u7406\u89e3<\/strong>\uff1a\u5ba2\u6237\u7aef\u53d1\u51fa\u7684\u8bf7\u6c42\u201c\u4e0d\u5408\u6cd5\u201d\uff0c\u670d\u52a1\u5668\u65e0\u6cd5\u89e3\u6790\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2\ufe0f\u20e3 \u5e38\u89c1\u539f\u56e0<\/h2>\n\n\n\n<p>HTTP 400 \u9519\u8bef\u901a\u5e38\u7531\u5ba2\u6237\u7aef\u95ee\u9898\u5bfc\u81f4\uff0c\u5305\u62ec\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7c7b\u578b<\/th><th>\u5177\u4f53\u539f\u56e0<\/th><\/tr><\/thead><tbody><tr><td>\u8bf7\u6c42\u683c\u5f0f\u95ee\u9898<\/td><td>URL \u975e\u6cd5\u3001\u8bf7\u6c42\u5934\u9519\u8bef\u3001Content-Type \u4e0e\u8bf7\u6c42\u4f53\u4e0d\u5339\u914d<\/td><\/tr><tr><td>\u8bf7\u6c42\u53c2\u6570\u9519\u8bef<\/td><td>GET\/POST \u53c2\u6570\u7f3a\u5931\u6216\u975e\u6cd5\uff08\u7279\u6b8a\u5b57\u7b26\u672a\u7f16\u7801\uff09<\/td><\/tr><tr><td>Cookie \u6216 Session \u95ee\u9898<\/td><td>Cookie \u8d85\u957f\u3001\u635f\u574f\u6216\u4e0d\u7b26\u5408\u670d\u52a1\u5668\u8981\u6c42<\/td><\/tr><tr><td>URL \u592a\u957f<\/td><td>GET \u8bf7\u6c42 URL \u8d85\u8fc7\u670d\u52a1\u5668\u9650\u5236\uff08\u901a\u5e38 2KB-8KB\uff09<\/td><\/tr><tr><td>\u4ee3\u7406\u6216\u7f51\u5173\u95ee\u9898<\/td><td>Nginx\/Apache\/\u8d1f\u8f7d\u5747\u8861\u914d\u7f6e\u4e0d\u5f53<\/td><\/tr><tr><td>\u8bf7\u6c42\u4f53\u7f16\u7801\u95ee\u9898<\/td><td>JSON\/XML \u683c\u5f0f\u9519\u8bef\u3001\u7f3a\u5c11\u5fc5\u9700\u5b57\u6bb5<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3\ufe0f\u20e3 \u6392\u67e5\u6b65\u9aa4<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">3.1 \u68c0\u67e5 URL<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>URL \u662f\u5426\u6b63\u786e<\/li>\n\n\n\n<li>\u662f\u5426\u542b\u6709\u975e\u6cd5\u5b57\u7b26\uff08\u7a7a\u683c\u3001\u4e2d\u6587\u3001\u7279\u6b8a\u7b26\u53f7\u672a\u7f16\u7801\uff09<\/li>\n<\/ol>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\u9519\u8bef\u793a\u4f8b\uff1ahttp:\/\/example.com\/api?name=\u5f20\u4e09\n\u6b63\u786e\u793a\u4f8b\uff1ahttp:\/\/example.com\/api?name=%E5%BC%A0%E4%B8%89\n\n<\/pre><\/div>\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5bf9\u4e2d\u6587\u6216\u7279\u6b8a\u5b57\u7b26\uff0c\u9700\u8981 <strong>URL \u7f16\u7801<\/strong>\u3002<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">3.2 \u68c0\u67e5\u8bf7\u6c42\u65b9\u6cd5\u548c\u53c2\u6570<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>GET \/ POST \u662f\u5426\u5339\u914d\u63a5\u53e3\u8981\u6c42<\/li>\n\n\n\n<li>POST \u8bf7\u6c42 <code>Content-Type<\/code> \u662f\u5426\u6b63\u786e\n<ul class=\"wp-block-list\">\n<li><code>application\/json<\/code> \u2192 JSON \u8bf7\u6c42\u4f53<\/li>\n\n\n\n<li><code>application\/x-www-form-urlencoded<\/code> \u2192 \u8868\u5355\u6570\u636e<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u53c2\u6570\u662f\u5426\u7f3a\u5931\u6216\u591a\u4f59<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n# curl \u6d4b\u8bd5 POST \u8bf7\u6c42\ncurl -X POST -H &quot;Content-Type: application\/json&quot; \\\n    -d &#039;{&quot;username&quot;:&quot;test&quot;,&quot;password&quot;:&quot;123456&quot;}&#039; \\\n    http:\/\/example.com\/login\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">3.3 \u68c0\u67e5 Cookie \/ Session<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cookie \u8d85\u957f\u6216\u635f\u574f\u53ef\u80fd\u5bfc\u81f4\u670d\u52a1\u5668\u62d2\u7edd\u8bf7\u6c42<\/li>\n\n\n\n<li>\u6e05\u9664\u6d4f\u89c8\u5668 Cookie \u6216 Session \u540e\u91cd\u8bd5<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n# \u6e05\u9664\u6d4f\u89c8\u5668 Cookie\nCtrl + Shift + Delete\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">3.4 \u68c0\u67e5\u8bf7\u6c42\u5934<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5fc5\u8981\u8bf7\u6c42\u5934\u662f\u5426\u7f3a\u5931\uff0c\u4f8b\u5982 <code>Host<\/code>\u3001<code>User-Agent<\/code>\u3001<code>Content-Length<\/code><\/li>\n\n\n\n<li>Content-Length \u4e0e\u5b9e\u9645\u8bf7\u6c42\u4f53\u957f\u5ea6\u4e0d\u4e00\u81f4\u4e5f\u4f1a\u89e6\u53d1 400<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\ncurl -v http:\/\/example.com\/api\n# \u67e5\u770b\u8bf7\u6c42\u5934\u4fe1\u606f\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">3.5 \u68c0\u67e5\u670d\u52a1\u5668\u914d\u7f6e<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nginx \/ Apache \/ \u8d1f\u8f7d\u5747\u8861\u53ef\u80fd\u5bf9 URL \u6216\u8bf7\u6c42\u4f53\u5927\u5c0f\u6709\u9650\u5236<\/li>\n\n\n\n<li>\u5e38\u89c1 Nginx \u914d\u7f6e\u9879\uff1a<code>client_max_body_size 10M; # \u8bbe\u7f6e POST \u8bf7\u6c42\u4f53\u6700\u5927\u503c<\/code><\/li>\n\n\n\n<li>\u68c0\u67e5\u670d\u52a1\u5668\u65e5\u5fd7\uff08error.log\uff09\u53ef\u4ee5\u83b7\u53d6\u5177\u4f53\u62a5\u9519\u539f\u56e0<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">3.6 \u68c0\u67e5\u7f16\u7801\u4e0e\u683c\u5f0f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>POST \u8bf7\u6c42 JSON \u683c\u5f0f\u4e0d\u6b63\u786e \u2192 400<\/li>\n\n\n\n<li>\u5b57\u7b26\u7f16\u7801\u9519\u8bef\uff08UTF-8\/GBK\uff09<\/li>\n\n\n\n<li>\u4f8b\u5982\u591a\u4e86\u9017\u53f7\u6216\u5f15\u53f7\u672a\u95ed\u5408\u90fd\u4f1a\u89e6\u53d1<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4\ufe0f\u20e3 \u5b9e\u6218\u89e3\u51b3\u65b9\u6848<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">4.1 URL &amp; \u53c2\u6570\u4fee\u6b63<\/h3>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nimport requests\nfrom urllib.parse import quote\n\nname = &quot;\u5f20\u4e09&quot;\nurl = f&quot;http:\/\/example.com\/api?name={quote(name)}&quot;\nr = requests.get(url)\n\n<\/pre><\/div>\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528 <code>urllib.parse.quote<\/code> \u5bf9\u4e2d\u6587\u6216\u7279\u6b8a\u5b57\u7b26\u7f16\u7801<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">4.2 \u8bf7\u6c42\u5934\u4e0e\u65b9\u6cd5\u5339\u914d<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>POST \u8bf7\u6c42\u9700\u52a0 Content-Type<\/li>\n\n\n\n<li>GET \u8bf7\u6c42\u4e0d\u8981\u53d1\u9001\u8bf7\u6c42\u4f53<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nheaders = {&quot;Content-Type&quot;: &quot;application\/json&quot;}\ndata = {&quot;username&quot;:&quot;test&quot;,&quot;password&quot;:&quot;123&quot;}\nrequests.post(&quot;http:\/\/example.com\/login&quot;, json=data, headers=headers)\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">4.3 \u6e05\u7406 Cookie \/ Session<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6d4f\u89c8\u5668\u64cd\u4f5c\uff1a\u6e05\u9664 Cookie<\/li>\n\n\n\n<li>Python \u8bf7\u6c42\uff1a<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nsession = requests.Session()\nsession.cookies.clear()\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">4.4 \u8c03\u6574\u670d\u52a1\u5668\u9650\u5236<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u589e\u52a0 Nginx \/ Apache <code>client_max_body_size<\/code> \u6216 <code>LimitRequestLine<\/code><\/li>\n\n\n\n<li>\u68c0\u67e5\u8d1f\u8f7d\u5747\u8861\u5668\u5bf9 URL \u957f\u5ea6\u6216\u8bf7\u6c42\u4f53\u5927\u5c0f\u7684\u9650\u5236<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">4.5 \u65e5\u5fd7\u6392\u67e5<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u67e5\u770b\u670d\u52a1\u5668\u65e5\u5fd7\u975e\u5e38\u5173\u952e<code># Nginx tail -f \/var\/log\/nginx\/error.log # Apache tail -f \/var\/log\/apache2\/error.log<\/code><\/li>\n\n\n\n<li>\u901a\u8fc7\u65e5\u5fd7\u53ef\u4ee5\u51c6\u786e\u5b9a\u4f4d\u8bf7\u6c42\u88ab\u62d2\u7edd\u7684\u539f\u56e0<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">5\ufe0f\u20e3 400 \u9519\u8bef\u603b\u7ed3<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u539f\u56e0<\/th><th>\u5bf9\u5e94\u89e3\u51b3\u65b9\u6cd5<\/th><\/tr><\/thead><tbody><tr><td>URL \u975e\u6cd5<\/td><td>URL \u7f16\u7801\uff0c\u68c0\u67e5\u53c2\u6570<\/td><\/tr><tr><td>\u8bf7\u6c42\u53c2\u6570\u9519\u8bef<\/td><td>\u68c0\u67e5 GET\/POST \u53c2\u6570\uff0cJSON\/\u8868\u5355\u683c\u5f0f<\/td><\/tr><tr><td>Cookie \u8d85\u957f\/\u635f\u574f<\/td><td>\u6e05\u7406 Cookie \/ Session<\/td><\/tr><tr><td>\u8bf7\u6c42\u4f53\u8fc7\u5927<\/td><td>\u8c03\u6574\u670d\u52a1\u5668\u9650\u5236\u6216\u5206\u5757\u4e0a\u4f20<\/td><\/tr><tr><td>\u8bf7\u6c42\u5934\u7f3a\u5931<\/td><td>\u8865\u5168 Host\/User-Agent\/Content-Type<\/td><\/tr><tr><td>\u7f16\u7801\u9519\u8bef<\/td><td>\u4fdd\u6301 UTF-8\uff0cJSON\/XML \u683c\u5f0f\u6b63\u786e<\/td><\/tr><tr><td>Nginx\/\u8d1f\u8f7d\u5747\u8861\u9650\u5236<\/td><td>\u8c03\u6574 client_max_body_size \/ LimitRequestLine<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u2705 <strong>\u6838\u5fc3\u601d\u8def<\/strong>\uff1aHTTP 400 \u662f\u5ba2\u6237\u7aef\u95ee\u9898 \u2192 \u68c0\u67e5 <strong>URL\u3001\u53c2\u6570\u3001\u8bf7\u6c42\u5934\u3001\u8bf7\u6c42\u4f53\u3001\u7f16\u7801<\/strong> \u2192 \u5982\u679c\u4e00\u5207\u6b63\u786e\u518d\u6392\u67e5\u670d\u52a1\u5668\u914d\u7f6e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u597d\u7684\uff0c\u6211\u4eec\u6765\u7cfb\u7edf\u8bb2\u89e3 HTTP 400 \u9519\u8bef\uff08Bad Request\uff09 \u7684\u539f\u56e0\u3001&#8230; <a class=\"more-link\" href=\"https:\/\/www.52runoob.com\/index.php\/2026\/01\/01\/%e8%a7%a3%e5%86%b3http-400%e9%94%99%e8%af%af\/\">Continue Reading &rarr;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":["post-1144","post","type-post","status-publish","format-standard","hentry","category-12"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/1144","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/comments?post=1144"}],"version-history":[{"count":1,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/1144\/revisions"}],"predecessor-version":[{"id":1145,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/1144\/revisions\/1145"}],"wp:attachment":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/media?parent=1144"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/categories?post=1144"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/tags?post=1144"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}