{"id":2523,"date":"2020-03-31T11:41:09","date_gmt":"2020-03-31T03:41:09","guid":{"rendered":"http:\/\/www.yuguoxy.com\/geekhome\/?p=2523"},"modified":"2026-08-18T12:35:25","modified_gmt":"2026-08-18T04:35:25","slug":"jsonp%e7%9a%84%e5%8e%9f%e7%90%86%e4%b8%8e%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=2523","title":{"rendered":"jsonp\u7684\u539f\u7406\u4e0e\u5b9e\u73b0"},"content":{"rendered":"
\n

JSONP<\/strong> \u662f\u4e00\u79cd\u8de8\u57df\u901a\u4fe1\u624b\u6bb5\u3002\u539f\u7406\u5f88\u7b80\u5355\uff1a\u5229\u7528 script<\/code> \u6807\u7b7e\u7684 src<\/code> \u4e0d\u53d7\u540c\u6e90\u7b56\u7565\u9650\u5236\uff0c\u628a\u524d\u7aef\u56de\u8c03\u540d\u4f20\u7ed9\u670d\u52a1\u5668\uff0c\u670d\u52a1\u5668\u518d\u8fd4\u56de\u4e00\u6bb5\u300c\u8c03\u7528\u8be5\u51fd\u6570\u300d\u7684\u811a\u672c\u3002<\/p>\n

\u56e0\u4e3a\u8d70\u7684\u662f script \u52a0\u8f7d\uff0c\u6240\u4ee5 JSONP \u53ea\u652f\u6301 GET<\/strong>\u3002\u4e0b\u9762\u6309\u6d41\u7a0b\u3001\u6700\u5c0f\u5b9e\u73b0\u548c\u66f4\u53ef\u9760\u7684\u5c01\u88c5\u628a\u8fd9\u4ef6\u4e8b\u5199\u6e05\u695a\u3002\u6765\u6e90\uff1ahttps:\/\/segmentfault.com\/a\/1190000007665361#articleHeader1<\/a>\u3002<\/p>\n

\u4e00\u3001\u6982\u8ff0\u4e0e\u6d41\u7a0b<\/h2>\n
    \n
  • \n
    \u7528 script \u7684 src \u8de8\u57df\u62c9\u4e00\u6bb5 JS\u3002<\/section>\n<\/li>\n
  • \n
    \u524d\u7aef\u628a\u56de\u8c03\u51fd\u6570\u540d\u5f53\u4f5c\u53c2\u6570\u4f20\u7ed9\u670d\u52a1\u5668\uff0c\u670d\u52a1\u5668\u6ce8\u5165\u53c2\u6570\u540e\u518d\u8fd4\u56de\uff0c\u5b8c\u6210\u300c\u670d\u52a1\u7aef\u5411\u5ba2\u6237\u7aef\u4f20\u6570\u636e\u300d\u3002<\/section>\n<\/li>\n
  • \n
    \u53ea\u652f\u6301 GET\u3002<\/section>\n<\/li>\n<\/ul>\n

    \u5148\u8bbe\u5b9a\u4e00\u4e2a script \u6807\u7b7e\uff0ccallback<\/code> \u6307\u5b9a\u51fd\u6570\u540d\uff1a<\/p>\n

    <script src=\"http:\/\/jsonp.js?callback=xxx\"><\/script><\/code><\/pre>\n
    \u8fdc\u7a0b\u670d\u52a1\u7aef\u8c03\u7528\u6307\u5b9a\u51fd\u6570\u5e76\u4f20\u5165\u53c2\u6570\uff0c\u628a fn(response)<\/code> \u4f20\u56de\u5ba2\u6237\u7aef\u3002PHP \u4fa7\u5e38\u89c1\u5199\u6cd5\u5982\u4e0b\uff08\u539f\u6587\u628a json_encode<\/code> \u5199\u8fdb\u4e86\u5b57\u7b26\u4e32\u91cc\uff0c\u8fd9\u91cc\u6539\u6210\u771f\u6b63\u62fc\u63a5\uff09\uff1a<\/p>\n
    $callback = !empty($_GET['callback']) ? $_GET['callback'] : 'callback';\necho $callback.'('.json_encode($data).')';<\/code><\/pre>\n
    \u5ba2\u6237\u7aef\u6536\u5230\u8fd4\u56de\u7684 JS \u811a\u672c\u540e\u5f00\u59cb\u89e3\u6790\uff0c\u6267\u884c fn(response)<\/code>\u3002<\/p>\n\n\n\n\n\n\n\n
    \u6b65\u9aa4<\/th>\n\u8c01\u505a<\/th>\n\u7ed3\u679c<\/th>\n<\/tr>\n<\/thead>\n
    1<\/td>\n\u524d\u7aef<\/td>\n\u63d2\u5165 script\uff0csrc \u5e26 callback \u540d<\/td>\n<\/tr>\n
    2<\/td>\n\u670d\u52a1\u7aef<\/td>\n\u8fd4\u56de callback(json)<\/td>\n<\/tr>\n
    3<\/td>\n\u6d4f\u89c8\u5668<\/td>\n\u5f53\u811a\u672c\u6267\u884c\uff0c\u6570\u636e\u8fdb\u56de\u8c03<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    \u4e8c\u3001\u7b80\u5355\u5b9e\u73b0<\/h2>\n
    \u6700\u5c0f\u5b9e\u73b0\u5c31\u662f\u62fc\u63a5 URL\uff0c\u518d\u52a8\u6001\u5f80 head \u91cc\u585e\u4e00\u4e2a script\uff1a<\/p>\n
    function jsonp(req){\n    var script = document.createElement('script');\n    var url = req.url + '?callback=' + req.callback.name;\n    script.src = url;\n    document.getElementsByTagName('head')[0].appendChild(script); \n}<\/code><\/pre>\n
    \u524d\u7aef\u8c03\u7528\u793a\u4f8b\uff1a<\/p>\n
    function hello(res){\n    alert('hello ' + res.data);\n}\njsonp({\n    url : '',\n    callback : hello \n});<\/code><\/pre>\n
    Node \u670d\u52a1\u7aef\u628a\u67e5\u8be2\u53c2\u6570\u91cc\u7684 callback \u540d\u548c JSON \u62fc\u6210\u4e00\u6bb5\u51fd\u6570\u8c03\u7528\uff1a<\/p>\n
    var http = require('http');\nvar urllib = require('url');\n\nvar port = 8080;\nvar data = {'data':'world'};\n\nhttp.createServer(function(req,res){\n    var params = urllib.parse(req.url,true);\n    if(params.query.callback){\n        console.log(params.query.callback);\n        \/\/jsonp\n        var str = params.query.callback + '(' + JSON.stringify(data) + ')';\n        res.end(str);\n    } else {\n        res.end();\n    }\n    \n}).listen(port,function(){\n    console.log('jsonp server is on');\n});<\/code><\/pre>\n
    \u8fd9\u4e2a\u5b9e\u73b0\u867d\u77ed\uff0c\u4f46\u6709\u4e24\u5904\u4e0d\u8db3\uff1a\u56de\u8c03\u5fc5\u987b\u662f\u5168\u5c40\u51fd\u6570\uff08\u5e94\u5c3d\u91cf\u5c11\u66b4\u9732\u5168\u5c40\u65b9\u6cd5\uff09\uff1b\u8fd8\u7f3a\u5c11\u53c2\u6570\u6821\u9a8c\uff0c\u63a5\u53e3\u5bb9\u6613\u88ab\u4e71\u8c03\u3002<\/p>\n
    \u4e09\u3001\u66f4\u53ef\u9760\u7684\u5c01\u88c5<\/h2>\n
    \u4e0b\u9762\u8fd9\u4efd\u5b9e\u73b0\u7528\u81ea\u589e id \u751f\u6210\u4e00\u6b21\u6027\u5168\u5c40\u51fd\u6570\u540d\uff0c\u8bf7\u6c42\u7ed3\u675f\u540e\u5220\u8282\u70b9\u3001\u5220\u5168\u5c40\u51fd\u6570\uff0c\u5e76\u5904\u7406 onerror<\/code>\uff1a<\/p>\n
    (function (global) {\n   var id = 0,\n    container = document.getElementsByTagName(\"head\")[0];\n\n    function jsonp(options) {\n      if(!options || !options.url) return;\n    \n        var scriptNode = document.createElement(\"script\"),\n            data = options.data || {},\n            url = options.url,\n            callback = options.callback,\n            fnName = \"jsonp\" + id++;\n    \n        \/\/ \u6dfb\u52a0\u56de\u8c03\u51fd\u6570\n        data[\"callback\"] = fnName;\n    \n        \/\/ \u62fc\u63a5url\n        var params = [];\n        for (var key in data) {\n            params.push(encodeURIComponent(key) + \"=\" + encodeURIComponent(data[key]));\n        }\n        url = url.indexOf(\"?\") > 0 ? (url + \"&\") : (url + \"?\");\n        url += params.join(\"&\");\n        scriptNode.src = url;\n    \n        \/\/ \u4f20\u9012\u7684\u662f\u4e00\u4e2a\u533f\u540d\u7684\u56de\u8c03\u51fd\u6570\uff0c\u8981\u6267\u884c\u7684\u8bdd\uff0c\u66b4\u9732\u4e3a\u4e00\u4e2a\u5168\u5c40\u65b9\u6cd5\n        global[fnName] = function (ret) {\n            callback && callback(ret);\n            container.removeChild(scriptNode);\n            delete global[fnName];\n        }\n    \n        \/\/ \u51fa\u9519\u5904\u7406\n        scriptNode.onerror = function () {\n            callback && callback({error:\"error\"});\n            container.removeChild(scriptNode);\n            global[fnName] && delete global[fnName];\n        }\n    \n        scriptNode.type = \"text\/javascript\";\n        container.appendChild(scriptNode)\n    }\n    \n    global.jsonp = jsonp;\n\n})(this);<\/code><\/pre>\n
    \u4f7f\u7528\u793a\u4f8b\uff1a<\/p>\n
    jsonp({    \n    url : \"www.example.com\",   \n    data : {id : 1},    \n    callback : function (ret){    \n     console.log(ret);    }\n});<\/code><\/pre>\n
    \n
    \u4e00\u53e5\u8bdd\u603b\u7ed3\uff1aJSONP \u9760 script.src \u8de8\u57df\uff0c\u670d\u52a1\u7aef\u8fd4\u56de callback(json)\uff1b\u5c01\u88c5\u65f6\u7528\u4e00\u6b21\u6027\u5168\u5c40\u51fd\u6570\u540d\u3001\u62fc\u53c2\u3001\u7528\u5b8c\u5373\u5220\uff0c\u5e76\u8865\u4e0a onerror\u3002<\/strong><\/p>\n<\/blockquote>\n<\/section>\n","protected":false},"excerpt":{"rendered":"
    JSONP \u662f\u4e00\u79cd\u8de8\u57df\u901a\u4fe1\u624b\u6bb5\u3002\u539f\u7406\u5f88\u7b80\u5355\uff1a\u5229\u7528 script \u6807\u7b7e\u7684 src \u4e0d\u53d7\u540c\u6e90\u7b56\u7565\u9650\u5236\uff0c\u628a\u524d\u7aef\u56de\u8c03\u540d […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[109,105],"tags":[150,119],"_links":{"self":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/2523"}],"collection":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2523"}],"version-history":[{"count":2,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/2523\/revisions"}],"predecessor-version":[{"id":3697,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/2523\/revisions\/3697"}],"wp:attachment":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2523"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2523"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2523"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}