{"id":34535,"date":"2023-12-29T18:44:18","date_gmt":"2023-05-11T06:12:55","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/google-app-engine-for-java-%e7%bb%bc%e8%bf%b0\/"},"modified":"2024-05-04T15:54:22","modified_gmt":"2024-05-04T07:54:22","slug":"google-app-engine-for-java-%e7%bb%bc%e8%bf%b0","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/google-app-engine-for-java-%e7%bb%bc%e8%bf%b0\/","title":{"rendered":"Google App Engine for Java \u7efc\u8ff0"},"content":{"rendered":"<h1>\u56fe\u4e66\u9986\u7684\u7ec4\u6210<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">RestAPI: Jersey<\/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\">Data Binding: MOXy<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">DataStoreAPI: Objectify<\/ul>\n<h1>\u6570\u636e\u5b58\u50a8\u670d\u52a1<\/h1>\n<p>\u5bf9\u8c61\u6570\u636e\u5e93\u3002\u57fa\u4e8eBigTable\u7684\u4e00\u79cd\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30ab\u30a4\u30f3\u30c9(kind)<\/ul>\n<\/li>\n<\/ul>\n<p>RDB\u306etable\u306b\u76f8\u5f53<\/p>\n<p>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3(entity)<\/p>\n<p>RDB\u306e\u30ec\u30b3\u30fc\u30c9\u306b\u76f8\u5f53<\/p>\n<p>\u30d7\u30ed\u30d1\u30c6\u30a3(property)<\/p>\n<p>RDB\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u76f8\u5f53<\/p>\n<p>\u5728Java\u4e2d\uff0c\u8fdb\u884c\u6570\u636e\u7684CRUD\u64cd\u4f5c\uff0c\u53ef\u4ee5\u4f7f\u7528\u8c37\u6b4c\u5236\u4f5c\u7684\u540d\u4e3aObjectify\u7684\u5e93\uff0c\u4f7f\u7528\u5b83\u4f1a\u66f4\u52a0\u65b9\u4fbf\u3002<\/p>\n<h2>\u5b9e\u4f53\u7684\u5b9a\u4e49 de<\/h2>\n<pre class=\"post-pre\"><code><span class=\"kn\">import<\/span> <span class=\"nn\">com.googlecode.objectify.annotation.Entity<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.googlecode.objectify.annotation.Id<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.googlecode.objectify.annotation.Index<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"nd\">@Entity<\/span>\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">Car<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"nd\">@Id<\/span> <span class=\"nc\">Long<\/span> <span class=\"n\">id<\/span><span class=\"o\">;<\/span>\r\n    <span class=\"nd\">@Index<\/span> <span class=\"nc\">String<\/span> <span class=\"n\">license<\/span><span class=\"o\">;<\/span>\r\n    <span class=\"kt\">int<\/span> <span class=\"n\">color<\/span><span class=\"o\">;<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<h2>\u4fdd\u5b58<\/h2>\n<pre class=\"post-pre\"><code>    public Car create() {\r\n        Car car = new Car(\"toyoya\", 1234);\r\n        ofy().save().entity(car).now();\r\n    }\r\n<\/code><\/pre>\n<h2>\u83b7\u53d6<\/h2>\n<pre class=\"post-pre\"><code>Result&lt;Car&gt; result = ofy().load().key(Key.create(Car.class, id));\r\n<\/code><\/pre>\n<h2>\u5217\u8868<\/h2>\n<pre class=\"post-pre\"><code>Result&lt;Car&gt; result = ofy().load().key(Key.create(Car.class, id));\r\n<\/code><\/pre>\n<h2>\u67e5\u8be2<\/h2>\n<pre class=\"post-pre\"><code>\/\/ Operators are &gt;, &gt;=, &lt;, &lt;=, in, !=, &lt;&gt;, =, ==\r\nList&lt;Car&gt; cars = ofy().load().type(Car.class).filter(\"year &gt;\", 1999).list();\r\nList&lt;Car&gt; cars = ofy().load().type(Car.class).filter(\"year &gt;=\", 1999).list();\r\nList&lt;Car&gt; cars = ofy().load().type(Car.class).filter(\"year !=\", 1999).list();\r\nList&lt;Car&gt; cars = ofy().load().type(Car.class).filter(\"year in\", yearList).list();\r\n\r\n\/\/ The Query itself is Iterable\r\nQuery&lt;Car&gt; q = ofy().load().type(Car.class).filter(\"vin &gt;\", \"123456789\");\r\nfor (Car car: q) {\r\n    System.out.println(car.toString());\r\n}\r\n\r\n<\/code><\/pre>\n<h2>\u7d22\u5f15<\/h2>\n<p>\u53ea\u8981\u5728\u57fa\u672c@Index\u4e2d\u8fdb\u884c\u8bbe\u7f6e\uff0cIndex\u5c31\u4f1a\u88ab\u914d\u7f6e\u3002<br \/>\n\u7136\u800c\uff0c\u5bf9\u4e8e\u81ea\u5b9a\u4e49\u7d22\u5f15\uff08\u5728\u6307\u5b9a\u591a\u4e2a\u6761\u4ef6\u7684\u60c5\u51b5\u4e0b\uff09\uff0c\u9700\u8981\u521b\u5efadatastore-indexes.xml\u3002<\/p>\n<p>\u8bf7\u4f60\u7ed9\u6211\u4e00\u4e2a\u6c34\u676f\u7684\u4f8b\u5b50\u3002<br \/>\n\u8bf7\u4f60\u4e3e\u4e2a\u6c34\u676f\u7684\u5b9e\u4f8b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"cp\">&lt;?xml version=\"1.0\" encoding=\"utf-8\"?&gt;<\/span>\r\n<span class=\"nt\">&lt;datastore-indexes<\/span>\r\n  <span class=\"na\">autoGenerate=<\/span><span class=\"s\">\"true\"<\/span><span class=\"nt\">&gt;<\/span>\r\n    <span class=\"nt\">&lt;datastore-index<\/span> <span class=\"na\">kind=<\/span><span class=\"s\">\"Employee\"<\/span> <span class=\"na\">ancestor=<\/span><span class=\"s\">\"false\"<\/span><span class=\"nt\">&gt;<\/span>\r\n        <span class=\"nt\">&lt;property<\/span> <span class=\"na\">name=<\/span><span class=\"s\">\"lastName\"<\/span> <span class=\"na\">direction=<\/span><span class=\"s\">\"asc\"<\/span> <span class=\"nt\">\/&gt;<\/span>\r\n        <span class=\"nt\">&lt;property<\/span> <span class=\"na\">name=<\/span><span class=\"s\">\"hireDate\"<\/span> <span class=\"na\">direction=<\/span><span class=\"s\">\"desc\"<\/span> <span class=\"nt\">\/&gt;<\/span>\r\n    <span class=\"nt\">&lt;\/datastore-index&gt;<\/span>\r\n    <span class=\"nt\">&lt;datastore-index<\/span> <span class=\"na\">kind=<\/span><span class=\"s\">\"Project\"<\/span> <span class=\"na\">ancestor=<\/span><span class=\"s\">\"false\"<\/span><span class=\"nt\">&gt;<\/span>\r\n        <span class=\"nt\">&lt;property<\/span> <span class=\"na\">name=<\/span><span class=\"s\">\"dueDate\"<\/span> <span class=\"na\">direction=<\/span><span class=\"s\">\"asc\"<\/span> <span class=\"nt\">\/&gt;<\/span>\r\n        <span class=\"nt\">&lt;property<\/span> <span class=\"na\">name=<\/span><span class=\"s\">\"cost\"<\/span> <span class=\"na\">direction=<\/span><span class=\"s\">\"desc\"<\/span> <span class=\"nt\">\/&gt;<\/span>\r\n    <span class=\"nt\">&lt;\/datastore-index&gt;<\/span>\r\n<span class=\"nt\">&lt;\/datastore-indexes&gt;<\/span>\r\n<\/code><\/pre>\n<h2>\u4ea4\u6613<\/h2>\n<p>\u867d\u7136\u6709\u4e00\u4e9b\u9650\u5236\uff0c\u4f46\u4ecd\u6709\u53ef\u80fd\u4f7f\u7528\uff0c\u4e0d\u662f\u5b8c\u5168\u65e0\u6cd5\u4f7f\u7528\u3002<\/p>\n<pre class=\"post-pre\"><code>import static com.googlecode.objectify.ObjectifyService.ofy;\r\nimport com.googlecode.objectify.Work;\r\n\r\n\/\/ If you don't need to return a value, you can use VoidWork\r\nThing th = ofy().transact(new Work&lt;Thing&gt;() {\r\n    public Thing run() {\r\n        Thing thing = ofy().load().key(thingKey).now();\r\n        thing.modify();\r\n        ofy().save().entity(thing);\r\n        return thing;\r\n    }\r\n});\r\n<\/code><\/pre>\n<h1>\u7528\u6237\u670d\u52a1<\/h1>\n<p>\u7b80\u5316\u4f7f\u5f97\u7528\u6237\u53ef\u4ee5\u8f7b\u677e\u4f7f\u7528\u8bf8\u5982\u4f7f\u7528Google\u8d26\u6237\u8fdb\u884c\u7528\u6237\u8ba4\u8bc1\u7b49\u673a\u5236\u7684\u670d\u52a1\u3002<br \/>\n\u4f8b\u5982\uff0c\u53ea\u5c06\u67d0\u4e2aURL\u8bbe\u4e3aGoogle\u8ba4\u8bc1\uff0c\u6216\u8005\u4ec5\u7ed9\u4e88\u7279\u5b9a\u7528\u6237\u8ba4\u8bc1\u8bb8\u53ef\u7b49\u3002<br \/>\n\u8fd8\u53ef\u4ee5\u5728\u64cd\u4f5c\u5458\u754c\u9762\u4e0a\u653e\u7f6e\uff0c\u6216\u8005\u5728\u53d1\u5e03\u524d\u4ec5\u5141\u8bb8\u7279\u5b9a\u7528\u6237\u901a\u8fc7Google\u8ba4\u8bc1\u67e5\u770b\u7b49\u3002<br \/>\n\u53ea\u9700\u8981\u5728WebXML\u4e2d\u8fdb\u884c\u8bbe\u7f6e\u5373\u53ef\u3002<\/p>\n<h1>\u5185\u5b58\u7f13\u5b58\u670d\u52a1<\/h1>\n<p>Objectify\u63d0\u4f9b\u4e86\u4e00\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5728\u9700\u8981\u5feb\u901f\u4e14\u4e34\u65f6\u5b58\u50a8\u6570\u636e\u7684\u60c5\u51b5\u4e0b\uff0c\u4ee5\u5185\u5b58\u65b9\u5f0f\u5b58\u50a8\u6570\u636e\uff0c\u800c\u4e0d\u662f\u4f7f\u7528Google Cloud Datastore\u6216Cloud SQL\u7b49\u6301\u4e45\u6027\u6570\u636e\u5b58\u50a8\u673a\u5236\u3002\u5b83\u8fd8\u63d0\u4f9b\u4e86\u5c06\u6570\u636e\u540c\u65f6\u4fdd\u5b58\u5230Memcache\u7684\u673a\u5236\u3002<\/p>\n<h1>\u4efb\u52a1\u961f\u5217\u670d\u52a1<\/h1>\n<p>\u6240\u8c13\u7684\u961f\u5217\u3002\u5b58\u5728\u7740\u4e24\u79cd\u7c7b\u578b\u7684\u961f\u5217\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Push Queue<\/ul>\n<\/li>\n<\/ul>\n<p>enqueue\u3057\u305f\u3089\u5373\u5ea7\u306bdequeue\u51e6\u7406\u3055\u308c\u308b\u3002<\/p>\n<p>Pull Queue<\/p>\n<p>\u7279\u5b9a\u306e\u30bf\u30a4\u30df\u30f3\u30b0\u3067dequeue\u3057\u305f\u3044\u5834\u5408\u306b\u5229\u7528\u3067\u304d\u308b\u3002<\/p>\n<p>\u5c06&#8230;\u52a0\u5165\u961f\u5217<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">Enqueue<\/span> <span class=\"kd\">extends<\/span> <span class=\"nc\">HttpServlet<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"kd\">protected<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">doPost<\/span><span class=\"o\">(<\/span><span class=\"nc\">HttpServletRequest<\/span> <span class=\"n\">request<\/span><span class=\"o\">,<\/span> <span class=\"nc\">HttpServletResponse<\/span> <span class=\"n\">response<\/span><span class=\"o\">)<\/span>\r\n            <span class=\"kd\">throws<\/span> <span class=\"nc\">ServletException<\/span><span class=\"o\">,<\/span> <span class=\"nc\">IOException<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"nc\">String<\/span> <span class=\"n\">key<\/span> <span class=\"o\">=<\/span> <span class=\"n\">request<\/span><span class=\"o\">.<\/span><span class=\"na\">getParameter<\/span><span class=\"o\">(<\/span><span class=\"s\">\"key\"<\/span><span class=\"o\">);<\/span>\r\n\r\n        <span class=\"c1\">\/\/ Add the task to the default queue.<\/span>\r\n        <span class=\"nc\">Queue<\/span> <span class=\"n\">queue<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">QueueFactory<\/span><span class=\"o\">.<\/span><span class=\"na\">getDefaultQueue<\/span><span class=\"o\">();<\/span>\r\n        <span class=\"n\">queue<\/span><span class=\"o\">.<\/span><span class=\"na\">add<\/span><span class=\"o\">(<\/span><span class=\"nc\">TaskOptions<\/span><span class=\"o\">.<\/span><span class=\"na\">Builder<\/span><span class=\"o\">.<\/span><span class=\"na\">withUrl<\/span><span class=\"o\">(<\/span><span class=\"s\">\"\/worker\"<\/span><span class=\"o\">).<\/span><span class=\"na\">param<\/span><span class=\"o\">(<\/span><span class=\"s\">\"key\"<\/span><span class=\"o\">,<\/span> <span class=\"n\">key<\/span><span class=\"o\">));<\/span>\r\n\r\n        <span class=\"n\">response<\/span><span class=\"o\">.<\/span><span class=\"na\">sendRedirect<\/span><span class=\"o\">(<\/span><span class=\"s\">\"\/\"<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u53d6\u51fa\u961f\u5217\u4e2d\u7684\u5143\u7d20<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/ The Worker servlet should be mapped to the \"\/worker\" URL.<\/span>\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">Worker<\/span> <span class=\"kd\">extends<\/span> <span class=\"nc\">HttpServlet<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"kd\">protected<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">doPost<\/span><span class=\"o\">(<\/span><span class=\"nc\">HttpServletRequest<\/span> <span class=\"n\">request<\/span><span class=\"o\">,<\/span> <span class=\"nc\">HttpServletResponse<\/span> <span class=\"n\">response<\/span><span class=\"o\">)<\/span>\r\n            <span class=\"kd\">throws<\/span> <span class=\"nc\">ServletException<\/span><span class=\"o\">,<\/span> <span class=\"nc\">IOException<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"nc\">String<\/span> <span class=\"n\">key<\/span> <span class=\"o\">=<\/span> <span class=\"n\">request<\/span><span class=\"o\">.<\/span><span class=\"na\">getParameter<\/span><span class=\"o\">(<\/span><span class=\"s\">\"key\"<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"c1\">\/\/ Do something with key.<\/span>\r\n    <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>dequeue\u7684\u673a\u5236\u662f\u5728enqueue\u65f6\uff0c\u901a\u8fc7http\u65b9\u5f0f\u53d1\u9001\u5904\u7406\u8bf7\u6c42\u7ed9\u6307\u5b9a\u7684\u8def\u5f84\u3002<\/p>\n<h1>\u5b9a\u65f6\u4efb\u52a1\u670d\u52a1\uff08Cron\uff09<\/h1>\n<p>\u6240\u8c13\u7684cron\u3002\u8bbe\u7f6ecron.xml\u8fdb\u884c\u914d\u7f6e\u3002<br \/>\n\u4e3a\u6bcf\u4e2acron\u51c6\u5907\u76f8\u5e94\u7684\u7ec8\u70b9(Servlet)\uff0c\u5e76\u5728Servlet\u4e2d\u7f16\u5199\u5904\u7406\u903b\u8f91\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"cp\">&lt;?xml version=\"1.0\" encoding=\"UTF-8\"?&gt;<\/span>\r\n<span class=\"nt\">&lt;cronentries&gt;<\/span>\r\n  <span class=\"nt\">&lt;cron&gt;<\/span>\r\n    <span class=\"nt\">&lt;url&gt;<\/span>\/recache<span class=\"nt\">&lt;\/url&gt;<\/span>\r\n    <span class=\"nt\">&lt;description&gt;<\/span>Repopulate the cache every 2 minutes<span class=\"nt\">&lt;\/description&gt;<\/span>\r\n    <span class=\"nt\">&lt;schedule&gt;<\/span>every 2 minutes<span class=\"nt\">&lt;\/schedule&gt;<\/span>\r\n  <span class=\"nt\">&lt;\/cron&gt;<\/span>\r\n  <span class=\"nt\">&lt;cron&gt;<\/span>\r\n    <span class=\"nt\">&lt;url&gt;<\/span>\/weeklyreport<span class=\"nt\">&lt;\/url&gt;<\/span>\r\n    <span class=\"nt\">&lt;description&gt;<\/span>Mail out a weekly report<span class=\"nt\">&lt;\/description&gt;<\/span>\r\n    <span class=\"nt\">&lt;schedule&gt;<\/span>every monday 08:30<span class=\"nt\">&lt;\/schedule&gt;<\/span>\r\n    <span class=\"nt\">&lt;timezone&gt;<\/span>America\/New_York<span class=\"nt\">&lt;\/timezone&gt;<\/span>\r\n  <span class=\"nt\">&lt;\/cron&gt;<\/span>\r\n  <span class=\"nt\">&lt;cron&gt;<\/span>\r\n    <span class=\"nt\">&lt;url&gt;<\/span>\/weeklyreport<span class=\"nt\">&lt;\/url&gt;<\/span>\r\n    <span class=\"nt\">&lt;description&gt;<\/span>Mail out a weekly report<span class=\"nt\">&lt;\/description&gt;<\/span>\r\n    <span class=\"nt\">&lt;schedule&gt;<\/span>every monday 08:30<span class=\"nt\">&lt;\/schedule&gt;<\/span>\r\n    <span class=\"nt\">&lt;timezone&gt;<\/span>America\/New_York<span class=\"nt\">&lt;\/timezone&gt;<\/span>\r\n    <span class=\"nt\">&lt;target&gt;<\/span>version-2<span class=\"nt\">&lt;\/target&gt;<\/span>\r\n  <span class=\"nt\">&lt;\/cron&gt;<\/span>\r\n<span class=\"nt\">&lt;\/cronentries&gt;<\/span>\r\n<\/code><\/pre>\n<h1>\u6e20\u9053\u670d\u52a1<\/h1>\n<p>\u53ef\u4ee5\u5b9e\u73b0\u7c7b\u4f3c\u540d\u4e3aPubSub\u7684\u670d\u52a1\u3002\u6211\u8ba4\u4e3a\u53ef\u4ee5\u5b9e\u73b0\u7c7b\u4f3c\u804a\u5929\u7684\u529f\u80fd\u3002\u6211\u4f1a\u8be6\u7ec6\u8c03\u67e5\u3002<\/p>\n<h1>\u56fe\u50cf\u670d\u52a1<\/h1>\n<p>\u8fd9\u662f\u4e00\u4e2a\u53ef\u4ee5\u8f7b\u677e\u8c03\u6574\u56fe\u7247\u5927\u5c0f\u3001\u88c1\u526a\u548c\u65cb\u8f6c\u7684\u670d\u52a1\u3002<\/p>\n<pre class=\"post-pre\"><code>import com.google.appengine.api.images.Image;\r\nimport com.google.appengine.api.images.ImagesService;\r\nimport com.google.appengine.api.images.ImagesServiceFactory;\r\nimport com.google.appengine.api.images.Transform;\r\n\r\n\/\/ ...\r\n        byte[] oldImageData;  \/\/ ...\r\n\r\n        ImagesService imagesService = ImagesServiceFactory.getImagesService();\r\n\r\n        Image oldImage = ImagesServiceFactory.makeImage(oldImageData);\r\n        Transform resize = ImagesServiceFactory.makeResize(200, 300);\r\n\r\n        Image newImage = imagesService.applyTransform(resize, oldImage);\r\n\r\n        byte[] newImageData = newImage.getImageData();\r\n<\/code><\/pre>\n<p>Blobstore\u4e2d\u4fdd\u5b58\u7684\u56fe\u7247\u7b49\u53ef\u4ee5\u901a\u8fc7\u5411URL\u6dfb\u52a0\u67e5\u8be2\u6765\u8bbf\u95ee\uff0c\u7cfb\u7edf\u4f1a\u81ea\u52a8\u8fdb\u884c\u7f29\u653e\u548c\u88c1\u526a\u3002<\/p>\n<pre class=\"post-pre\"><code># Resize the image to 32 pixels (aspect-ratio preserved)\r\nhttp:\/\/lhx.ggpht.com\/randomStringImageId=s32\r\n\r\n# Crop the image to 32 pixels\r\nhttp:\/\/lhx.ggpht.com\/randomStringImageId=s32-c\r\n<\/code><\/pre>\n<h1>\u6a21\u5757<\/h1>\n<p>\u4e00\u79cd\u7c7b\u4f3c\u4e8e\u4e0e\u5e94\u7528\u7a0b\u5e8f\u76f8\u5173\u8054\u7684\u5b50\u5e94\u7528\u7a0b\u5e8f\u7684\u6982\u5ff5\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"modules_hierarchy.png\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d1de137434c4406c148fe\/47-0.png\" alt=\"modules_hierarchy.png\" \/><\/div>\n<pre class=\"post-pre\"><code><span class=\"cp\">&lt;?xml version=\"1.0\" encoding=\"UTF-8\"?&gt;<\/span>\r\n<span class=\"nt\">&lt;dispatch-entries&gt;<\/span>\r\n  <span class=\"nt\">&lt;dispatch&gt;<\/span>\r\n      <span class=\"c\">&lt;!-- Default module serves the typical web resources and all static resources. --&gt;<\/span>\r\n      <span class=\"nt\">&lt;url&gt;<\/span>*\/favicon.ico<span class=\"nt\">&lt;\/url&gt;<\/span>\r\n      <span class=\"nt\">&lt;module&gt;<\/span>default<span class=\"nt\">&lt;\/module&gt;<\/span>\r\n  <span class=\"nt\">&lt;\/dispatch&gt;<\/span>\r\n  <span class=\"nt\">&lt;dispatch&gt;<\/span>\r\n      <span class=\"c\">&lt;!-- Default module serves simple hostname request. --&gt;<\/span>\r\n      <span class=\"nt\">&lt;url&gt;<\/span>simple-sample.appspot.com\/<span class=\"nt\">&lt;\/url&gt;<\/span>\r\n      <span class=\"nt\">&lt;module&gt;<\/span>default<span class=\"nt\">&lt;\/module&gt;<\/span>\r\n  <span class=\"nt\">&lt;\/dispatch&gt;<\/span>\r\n  <span class=\"nt\">&lt;dispatch&gt;<\/span>\r\n      <span class=\"c\">&lt;!-- Send all mobile traffic to the mobile frontend. --&gt;<\/span>\r\n      <span class=\"nt\">&lt;url&gt;<\/span>*\/mobile\/*<span class=\"nt\">&lt;\/url&gt;<\/span>\r\n      <span class=\"nt\">&lt;module&gt;<\/span>mobile-frontend<span class=\"nt\">&lt;\/module&gt;<\/span>\r\n  <span class=\"nt\">&lt;\/dispatch&gt;<\/span>\r\n  <span class=\"nt\">&lt;dispatch&gt;<\/span>\r\n      <span class=\"c\">&lt;!-- Send all work to the one static backend. --&gt;<\/span>\r\n      <span class=\"nt\">&lt;url&gt;<\/span>*\/work\/*<span class=\"nt\">&lt;\/url&gt;<\/span>\r\n      <span class=\"nt\">&lt;module&gt;<\/span>static-backend<span class=\"nt\">&lt;\/module&gt;<\/span>\r\n  <span class=\"nt\">&lt;\/dispatch&gt;<\/span>\r\n<span class=\"nt\">&lt;\/dispatch-entries&gt;<\/span>\r\n<\/code><\/pre>\n<p>\u53ef\u4ee5\u7528\u4e8e\u7c7b\u4f3c\u4e8e\u5fae\u670d\u52a1\u7684\u673a\u5236\u3002\u540c\u65f6\uff0c\u901a\u8fc7\u7f16\u5199dispatch.xml\u6587\u4ef6\uff0c\u53ef\u4ee5\u5c06\u8bf7\u6c42\u59d4\u6258\u7ed9\u6307\u5b9a\u7684\u6a21\u5757\u5904\u7406\uff0c\u6839\u636eURL\u8def\u5f84\u7684\u4e0d\u540c\u3002<\/p>\n<h1>\u4e91\u8c03\u8bd5<\/h1>\n<p>\u592a\u5389\u5bb3\u4e86\u3002\u5728\u6b63\u5f0f\u73af\u5883\u4e2d\u8fd0\u884c\u7684\u670d\u52a1\u6e90\u4ee3\u7801\u4e0a\u653e\u7f6e\u8c03\u8bd5\u5668\uff0c\u53ef\u4ee5\u8fdb\u884c\u8c03\u8bd5\u3002\u76ee\u524d\u4ec5\u652f\u6301Java\u3002<br \/>\n\u5b89\u88c5\u8c03\u8bd5\u5668\u540e\uff0c\u5927\u7ea6\u4f1a\u505c\u6b6220\u6beb\u79d2\uff0c\u5e76\u5728\u6b64\u671f\u95f4\u83b7\u53d6\u5feb\u7167\u3002\u5b83\u4f1a\u4e3a\u6211\u4eec\u8f6c\u50a8\u53d8\u91cf\u503c\u548c\u5185\u5b58\u7b49\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u56fe\u4e66\u9986\u7684\u7ec4\u6210 RestAPI: Jersey &nbsp; Data Binding: MOXy &nbsp; [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-34535","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\/ -->\n<title>Google App Engine for Java \u7efc\u8ff0 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/google-app-engine-for-java-\u7efc\u8ff0\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Google App Engine for Java \u7efc\u8ff0\" \/>\n<meta property=\"og:description\" content=\"\u56fe\u4e66\u9986\u7684\u7ec4\u6210 RestAPI: Jersey &nbsp; Data Binding: MOXy &nbsp; [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/google-app-engine-for-java-\u7efc\u8ff0\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-05-11T06:12:55+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-05-04T07:54:22+00:00\" \/>\n<meta property=\"og:image\" 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