{"id":34568,"date":"2023-03-07T16:04:14","date_gmt":"2023-10-11T00:51:37","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/gae-java8%e8%af%95%e8%a1%8c%ef%bc%88%e7%ac%ac%e4%b8%89%e7%af%87%ef%bc%9ajava%e5%ba%94%e7%94%a8%e6%b5%8b%e8%af%95%e4%bb%a3%e7%a0%81%e8%a7%a3%e9%87%8a%ef%bc%89%e3%80%82\/"},"modified":"2024-04-29T17:48:31","modified_gmt":"2024-04-29T09:48:31","slug":"gae-java8%e8%af%95%e8%a1%8c%ef%bc%88%e7%ac%ac%e4%b8%89%e7%af%87%ef%bc%9ajava%e5%ba%94%e7%94%a8%e6%b5%8b%e8%af%95%e4%bb%a3%e7%a0%81%e8%a7%a3%e9%87%8a%ef%bc%89%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/gae-java8%e8%af%95%e8%a1%8c%ef%bc%88%e7%ac%ac%e4%b8%89%e7%af%87%ef%bc%9ajava%e5%ba%94%e7%94%a8%e6%b5%8b%e8%af%95%e4%bb%a3%e7%a0%81%e8%a7%a3%e9%87%8a%ef%bc%89%e3%80%82\/","title":{"rendered":"GAE\/Java8\u8bd5\u884c\uff08\u7b2c\u4e09\u7bc7\uff1aJava\u5e94\u7528\u6d4b\u8bd5\u4ee3\u7801\u89e3\u91ca\uff09"},"content":{"rendered":"<h1>\u8bf7\u7528\u4e2d\u6587\u7ffb\u8bd1\u4ee5\u4e0b\u53e5\u5b50\uff0c\u4ec5\u9700\u4e00\u79cd\u9009\u9879\uff1a<\/h1>\n<p>\u304a\u984c<\/p>\n<p>\u5728\u524d\u524d\u4e00\u6b21\uff0c\u6211\u81ea\u52a8\u751f\u6210\u4e86\u4e00\u4e2a\u7528\u4e8eGAE\u7684Java8\u5e94\u7528\uff0c\u4e0a\u6b21\u6211\u89e3\u91ca\u4e86\u4e3b\u8981\u4fee\u6539\u7684\u6587\u4ef6\u3002<br \/>\n\u4ece\u8fd9\u6b21\u5f00\u59cb\uff0c\u6211\u6253\u7b97\u5148\u52a0\u5165\u4e0eDatastore\u7684\u8bbf\u95ee\u903b\u8f91\uff0c\u7136\u540e\u518d\u8c08\u8bba\u6d4b\u8bd5\u4ee3\u7801\u3002<br \/>\n\u603b\u4e4b\uff0c\u8ba1\u5212\u662f\u5148\u8fdb\u884c\u6d4b\u8bd5\u9a71\u52a8\u5f00\u53d1\u3002<\/p>\n<h1>GAE\u4f1a\u8bd5\u7528\u6307\u6570<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">GAE\/Java8\u8a66\u884c\uff08\u305d\u306e0\uff1a\u300cApp Engine\u306b\u3064\u3044\u3066\u300d\uff09<\/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\">GAE\/Java8\u8a66\u884c\uff08\u305d\u306e1\uff1a\u300cJava8\u3067Web\u30a2\u30d7\u30ea\u4f5c\u3063\u3066\u30c7\u30d7\u30ed\u30a4\u300d\uff09<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">GAE\/Java8\u8a66\u884c\uff08\u305d\u306e2\uff1a\u300cJava\u30a2\u30d7\u30ea\u89e3\u8aac\u300d\uff09<\/ul>\n<h1>\u7814\u53d1\u73af\u5883<\/h1>\n<h3>\u64cd\u4f5c\u7cfb\u7edf<\/h3>\n<pre class=\"post-pre\"><code>$ cat \/etc\/os-release \r\nNAME=\"Ubuntu\"\r\nVERSION=\"17.10 (Artful Aardvark)\"\r\n<\/code><\/pre>\n<h3>Java &#8211; Java<\/h3>\n<pre class=\"post-pre\"><code>$ java -version\r\njava version \"1.8.0_181\"\r\nJava(TM) SE Runtime Environment (build 1.8.0_181-b13)\r\nJava HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)\r\n<\/code><\/pre>\n<h3>IDE (Integrated Development Environment)\u662f\u4e00\u79cd\u96c6\u6210\u5f00\u53d1\u73af\u5883\u7684\u7f29\u5199\u3002<\/h3>\n<p>\u5927\u5bb6\u90fd\u559c\u7231\u7684IntelliJ IDEA\u3002<\/p>\n<h1>\u89e3\u91ca\u7684\u610f\u601d\u662f\u5bf9\u67d0\u4e2a\u4e8b\u7269\u6216\u6982\u5ff5\u8fdb\u884c\u89e3\u8bf4\u6216\u6982\u8ff0\u3002<\/h1>\n<p>\u81ea\u52a8\u751f\u6210\u7684\u6d4b\u8bd5\u4ee3\u7801\u4e3a\u300cHelloAppEngineTest.java\u300d\u3002<\/p>\n<pre class=\"post-pre\"><code>$ tree \u203b\u5fc5\u8981\u306a\u90e8\u5206\u3060\u3051\u629c\u7c8b\r\n.\r\n\u2514\u2500\u2500 sky0621\r\n    \u251c\u2500\u2500 pom.xml\r\n    \u2514\u2500\u2500 src\r\n      \u00a0\u00a0 \u2514\u2500\u2500 test\r\n      \u00a0\u00a0     \u2514\u2500\u2500 java\r\n      \u00a0\u00a0         \u2514\u2500\u2500 com\r\n      \u00a0\u00a0             \u2514\u2500\u2500 example\r\n      \u00a0\u00a0                 \u2514\u2500\u2500 sky0621\r\n      \u00a0\u00a0                     \u2514\u2500\u2500 HelloAppEngineTest.java\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0b\u662f\u5168\u90e8\u6e90\u4ee3\u7801\u3002<br \/>\nhttps:\/\/github.com\/sky0621\/java-webapi-for-gae-study\/blob\/1a9d408da2a670ac2d61416d6ec964ae4306c8b8\/sky0621\/src\/test\/java\/com\/example\/sky0621\/HelloAppEngineTest.java<\/p>\n<p>\u5728\u603b\u7ed3\u7684\u540c\u65f6\u63d0\u53d6\u5fc5\u8981\u7684\u90e8\u5206\u6765\u8fdb\u884c\u8bf4\u660e\u3002<\/p>\n<h2>\u25a0JUnit4\u548cmochito<\/h2>\n<pre class=\"post-pre\"><code><span class=\"nd\">@RunWith<\/span><span class=\"o\">(<\/span><span class=\"nc\">JUnit4<\/span><span class=\"o\">.<\/span><span class=\"na\">class<\/span><span class=\"o\">)<\/span>\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">HelloAppEngineTest<\/span> <span class=\"o\">{<\/span>\r\n<span class=\"err\">\u3000\u3000\u301c<\/span><span class=\"n\">\u7701\u7565<\/span><span class=\"err\">\u301c<\/span>\r\n  <span class=\"nd\">@Mock<\/span> <span class=\"kd\">private<\/span> <span class=\"nc\">HttpServletRequest<\/span> <span class=\"n\">mockRequest<\/span><span class=\"o\">;<\/span>\r\n  <span class=\"nd\">@Mock<\/span> <span class=\"kd\">private<\/span> <span class=\"nc\">HttpServletResponse<\/span> <span class=\"n\">mockResponse<\/span><span class=\"o\">;<\/span>\r\n<span class=\"err\">\u3000\u3000\u301c<\/span><span class=\"n\">\u7701\u7565<\/span><span class=\"err\">\u301c<\/span>\r\n<\/code><\/pre>\n<p>\u81ea\u52a8\u751f\u6210\u9002\u7528\u4e8eApp Engine\u7684Maven\u9879\u76ee\u65f6\uff0c\u4f1a\u5728&#8221;pom.xml&#8221;\u6587\u4ef6\u4e2d\u5b9a\u4e49\u4ee5\u4e0bVersion\u3002<\/p>\n<pre class=\"post-pre\"><code>    <span class=\"nt\">&lt;dependency&gt;<\/span>\r\n      <span class=\"nt\">&lt;groupId&gt;<\/span>junit<span class=\"nt\">&lt;\/groupId&gt;<\/span>\r\n      <span class=\"nt\">&lt;artifactId&gt;<\/span>junit<span class=\"nt\">&lt;\/artifactId&gt;<\/span>\r\n      <span class=\"nt\">&lt;version&gt;<\/span>4.12<span class=\"nt\">&lt;\/version&gt;<\/span>\r\n      <span class=\"nt\">&lt;scope&gt;<\/span>test<span class=\"nt\">&lt;\/scope&gt;<\/span>\r\n    <span class=\"nt\">&lt;\/dependency&gt;<\/span>\r\n    <span class=\"nt\">&lt;dependency&gt;<\/span>\r\n      <span class=\"nt\">&lt;groupId&gt;<\/span>org.mockito<span class=\"nt\">&lt;\/groupId&gt;<\/span>\r\n      <span class=\"nt\">&lt;artifactId&gt;<\/span>mockito-all<span class=\"nt\">&lt;\/artifactId&gt;<\/span>\r\n      <span class=\"nt\">&lt;version&gt;<\/span>1.10.19<span class=\"nt\">&lt;\/version&gt;<\/span>\r\n      <span class=\"nt\">&lt;scope&gt;<\/span>test<span class=\"nt\">&lt;\/scope&gt;<\/span>\r\n    <span class=\"nt\">&lt;\/dependency&gt;<\/span>\r\n<\/code><\/pre>\n<p>JUnit\u6709\u6700\u65b0\u7248\u672c\u7684JUnit5\uff0c\u4f46\u5728\u8fd9\u91cc\u6211\u4eec\u4f1a\u5b89\u5fc3\u5730\u4f7f\u7528\u6307\u5b9a\u7684\u7248\u672c\u3002<br \/>\nMockito\u662fJava\u6d4b\u8bd5\u4ee3\u7801\u4e2d\u4f7f\u7528\u6a21\u62df\u5bf9\u8c61\u7684\u4e3b\u8981\u5de5\u5177\u3002<br \/>\n\u53ea\u9700\u5c06\u8981\u6a21\u62df\u7684\u5bf9\u8c61\u524d\u9762\u52a0\u4e0a&#8221;@Mock&#8221;\u6ce8\u91ca\uff0c\u975e\u5e38\u7b80\u5355\u3002<\/p>\n<h2>\u25a0\u6267\u884c\u6d4b\u8bd5\u7528\u4f8b\u524d\u7684\u51c6\u5907\u5de5\u4f5c<\/h2>\n<pre class=\"post-pre\"><code>  <span class=\"nd\">@Before<\/span>\r\n  <span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">setUp<\/span><span class=\"o\">()<\/span> <span class=\"kd\">throws<\/span> <span class=\"nc\">Exception<\/span> <span class=\"o\">{<\/span>\r\n<span class=\"err\">\u3000\u3000\u301c<\/span><span class=\"n\">\u7701\u7565<\/span><span class=\"err\">\u301c<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u901a\u8fc7\u300c@Before\u300d\u9644\u52a0\uff0c\u53ef\u4ee5\u5b9a\u4e49\u5728\u6267\u884c\u6bcf\u4e2a\u6d4b\u8bd5\u7528\u4f8b\u4e4b\u524d\u5e94\u8be5\u8fdb\u884c\u7684\u5904\u7406\u3002<\/p>\n<pre class=\"post-pre\"><code>    <span class=\"n\">when<\/span><span class=\"o\">(<\/span><span class=\"n\">mockRequest<\/span><span class=\"o\">.<\/span><span class=\"na\">getRequestURI<\/span><span class=\"o\">()).<\/span><span class=\"na\">thenReturn<\/span><span class=\"o\">(<\/span><span class=\"no\">FAKE_URL<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"n\">when<\/span><span class=\"o\">(<\/span><span class=\"n\">mockResponse<\/span><span class=\"o\">.<\/span><span class=\"na\">getWriter<\/span><span class=\"o\">()).<\/span><span class=\"na\">thenReturn<\/span><span class=\"o\">(<\/span><span class=\"k\">new<\/span> <span class=\"nc\">PrintWriter<\/span><span class=\"o\">(<\/span><span class=\"n\">responseWriter<\/span><span class=\"o\">));<\/span>\r\n<\/code><\/pre>\n<p>\u521a\u521a\u770b\u5230\u6dfb\u52a0\u4e86\u201c@Mock\u201d\u6ce8\u91ca\u7684\u5bf9\u8c61\uff0c\u901a\u8fc7\u8fd9\u6837\u64cd\u4f5c\u53ef\u4ee5\u63a7\u5236\u5176\u884c\u4e3a\u3002(\u4e0d\u9700\u8981\u89e3\u91ca\uff0c\u6211\u89c9\u5f97\u5927\u81f4\u610f\u601d\u5df2\u7ecf\u6e05\u695a\u4e86\u3002)<\/p>\n<h2>\u25a0\u672c\u5730\u670d\u52a1\u6d4b\u8bd5\u52a9\u624b<\/h2>\n<pre class=\"post-pre\"><code><span class=\"kn\">import<\/span> <span class=\"nn\">com.google.appengine.tools.development.testing.LocalServiceTestHelper<\/span><span class=\"o\">;<\/span>\r\n<span class=\"err\">\u3000\u3000\u301c<\/span><span class=\"n\">\u7701\u7565<\/span><span class=\"err\">\u301c<\/span>\r\n  <span class=\"kd\">private<\/span> <span class=\"kd\">final<\/span> <span class=\"nc\">LocalServiceTestHelper<\/span> <span class=\"n\">helper<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">LocalServiceTestHelper<\/span><span class=\"o\">();<\/span>\r\n<span class=\"err\">\u3000\u3000\u301c<\/span><span class=\"n\">\u7701\u7565<\/span><span class=\"err\">\u301c<\/span>\r\n  <span class=\"nd\">@Before<\/span>\r\n  <span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">setUp<\/span><span class=\"o\">()<\/span> <span class=\"kd\">throws<\/span> <span class=\"nc\">Exception<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"n\">helper<\/span><span class=\"o\">.<\/span><span class=\"na\">setUp<\/span><span class=\"o\">();<\/span>\r\n<span class=\"err\">\u3000\u3000\u3000\u301c<\/span><span class=\"n\">\u7701\u7565<\/span><span class=\"err\">\u301c<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u901a\u8fc7\u5728\u6bcf\u4e2a\u6d4b\u8bd5\u7528\u4f8b\u4e4b\u524d\u8bbe\u7f6eLocalServiceTestHelper\uff0c\u53ef\u4ee5\u5728\u4f7f\u7528appengine\u5e93\u8bbf\u95eeGAE\u7684Datastore\u6216Memcache\u7b49\u670d\u52a1\u65f6\uff0c\u5c06\u8fde\u63a5\u76ee\u6807\u8bbe\u7f6e\u4e3a\u5b58\u6839\uff0c\u4ece\u800c\u5b9e\u73b0\uff08\u65e0\u9700\u901a\u4fe1\u7684\uff09\u8fde\u63a5\u3002<br \/>\n\u901a\u8fc7\u8fd9\u6837\u505a\uff0c\u53ef\u4ee5\u7f16\u5199\u4e0e\u8fde\u63a5\u76ee\u6807\u65e0\u5173\u7684\u6d4b\u8bd5\u4ee3\u7801\uff0c\u800c\u4e0d\u4f9d\u8d56\u4e8e\u662f\u5426\u5b58\u5728\u901a\u4fe1\u73af\u5883\u3002<br \/>\n\uff08\u6d4b\u8bd5\u4ee3\u7801\u5e94\u5177\u5907\u4efb\u4f55\u5730\u65b9\u8fdb\u884c\u591a\u6b21\u8fd0\u884c\u90fd\u4f1a\u4ea7\u751f\u76f8\u540c\u7ed3\u679c\u7684\u5e42\u7b49\u6027\u975e\u5e38\u91cd\u8981\uff09<\/p>\n<h2>\u25a0\u6267\u884c\u6d4b\u8bd5\u7528\u4f8b\u540e\u5904\u7406<\/h2>\n<pre class=\"post-pre\"><code>  <span class=\"nd\">@After<\/span> <span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">tearDown<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"n\">helper<\/span><span class=\"o\">.<\/span><span class=\"na\">tearDown<\/span><span class=\"o\">();<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u901a\u8fc7\u300c@After\u300d\u6ce8\u89e3\u53ef\u4ee5\u5b9a\u4e49\u5728\u6bcf\u4e2a\u6d4b\u8bd5\u7528\u4f8b\u6267\u884c\u540e\u9700\u8981\u6267\u884c\u7684\u64cd\u4f5c\u3002\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u53ef\u4ee5\u8fdb\u884c\u8bbe\u7f6e\u597d\u7684LocalServiceTestHelper\u7684\u6e05\u7406\u5de5\u4f5c\u3002<\/p>\n<h2>\u25a0 \u6d4b\u8bd5\u7528\u4f8b<\/h2>\n<pre class=\"post-pre\"><code><span class=\"kn\">import<\/span> <span class=\"nn\">static<\/span> <span class=\"n\">com<\/span><span class=\"o\">.<\/span><span class=\"na\">google<\/span><span class=\"o\">.<\/span><span class=\"na\">common<\/span><span class=\"o\">.<\/span><span class=\"na\">truth<\/span><span class=\"o\">.<\/span><span class=\"na\">Truth<\/span><span class=\"o\">.<\/span><span class=\"na\">assertThat<\/span><span class=\"o\">;<\/span>\r\n<span class=\"err\">\u3000\u3000\u301c<\/span><span class=\"n\">\u7701\u7565<\/span><span class=\"err\">\u301c<\/span>\r\n  <span class=\"nd\">@Mock<\/span> <span class=\"kd\">private<\/span> <span class=\"nc\">HttpServletRequest<\/span> <span class=\"n\">mockRequest<\/span><span class=\"o\">;<\/span>\r\n  <span class=\"nd\">@Mock<\/span> <span class=\"kd\">private<\/span> <span class=\"nc\">HttpServletResponse<\/span> <span class=\"n\">mockResponse<\/span><span class=\"o\">;<\/span>\r\n  <span class=\"kd\">private<\/span> <span class=\"nc\">StringWriter<\/span> <span class=\"n\">responseWriter<\/span><span class=\"o\">;<\/span>\r\n  <span class=\"kd\">private<\/span> <span class=\"nc\">HelloAppEngine<\/span> <span class=\"n\">servletUnderTest<\/span><span class=\"o\">;<\/span>\r\n<span class=\"err\">\u3000\u3000\u301c<\/span><span class=\"n\">\u7701\u7565<\/span><span class=\"err\">\u301c<\/span>\r\n  <span class=\"nd\">@Test<\/span>\r\n  <span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">doGet_writesResponse<\/span><span class=\"o\">()<\/span> <span class=\"kd\">throws<\/span> <span class=\"nc\">Exception<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"n\">servletUnderTest<\/span><span class=\"o\">.<\/span><span class=\"na\">doGet<\/span><span class=\"o\">(<\/span><span class=\"n\">mockRequest<\/span><span class=\"o\">,<\/span> <span class=\"n\">mockResponse<\/span><span class=\"o\">);<\/span>\r\n\r\n    <span class=\"c1\">\/\/ We expect our hello world response.<\/span>\r\n    <span class=\"n\">assertThat<\/span><span class=\"o\">(<\/span><span class=\"n\">responseWriter<\/span><span class=\"o\">.<\/span><span class=\"na\">toString<\/span><span class=\"o\">())<\/span>\r\n        <span class=\"o\">.<\/span><span class=\"na\">named<\/span><span class=\"o\">(<\/span><span class=\"s\">\"HelloAppEngine response\"<\/span><span class=\"o\">)<\/span>\r\n        <span class=\"o\">.<\/span><span class=\"na\">contains<\/span><span class=\"o\">(<\/span><span class=\"s\">\"Hello App Engine - Standard \"<\/span><span class=\"o\">);<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u4f7f\u7528\u63d0\u4f9b\u7684\u5305\u800c\u4e0d\u662fJUnit\uff0c\u4f20\u9012\u6a21\u62df\u5bf9\u8c61\u5e76\u5bf9\u76ee\u6807\u6d4b\u8bd5&#8221;DoGet&#8221;\u8fdb\u884c\u6d4b\u8bd5\uff0c\u5e76\u4f7f\u7528&#8221;assertThat&#8221;\u8fdb\u884c\u7ed3\u679c\u9a8c\u8bc1\u3002<\/p>\n<h1>\u603b\u7ed3<\/h1>\n<p>\u4e00\u5f00\u59cb\uff08\u5f53\u7136\u7684\u4e8b\u60c5\u662f\uff09\uff0c\u81ea\u52a8\u751f\u6210\u7684\u6d4b\u8bd5\u4ee3\u7801\u662f\u5e42\u7b49\u7684\u3002<br 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