{"id":31273,"date":"2024-01-14T09:14:00","date_gmt":"2023-12-09T08:29:21","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/javajava-ee-2015%e5%b9%b4%e4%b8%9c%e4%ba%acjava%e6%97%a5%ef%bc%8cjava-ee-7%e6%a0%b8%e5%bf%83%e9%85%8d%e6%96%b9%e5%af%ba%e7%94%b0%e4%bd%b3%e5%a4%ae%e5%85%88%e7%94%9f%e7%9a%84\/"},"modified":"2025-08-12T23:11:03","modified_gmt":"2025-08-12T15:11:03","slug":"javajava-ee-2015%e5%b9%b4%e4%b8%9c%e4%ba%acjava%e6%97%a5%ef%bc%8cjava-ee-7%e6%a0%b8%e5%bf%83%e9%85%8d%e6%96%b9%e5%af%ba%e7%94%b0%e4%bd%b3%e5%a4%ae%e5%85%88%e7%94%9f%e7%9a%84","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/javajava-ee-2015%e5%b9%b4%e4%b8%9c%e4%ba%acjava%e6%97%a5%ef%bc%8cjava-ee-7%e6%a0%b8%e5%bf%83%e9%85%8d%e6%96%b9%e5%af%ba%e7%94%b0%e4%bd%b3%e5%a4%ae%e5%85%88%e7%94%9f%e7%9a%84\/","title":{"rendered":"[Java][Java EE] 2015\u5e74\u4e1c\u4eacJava\u65e5\uff0c\u201cJava EE 7\u6838\u5fc3\u914d\u65b9\u201d\u5bfa\u7530\u4f73\u592e\u5148\u751f\u7684\u8bb2\u5ea7\u603b\u7ed3"},"content":{"rendered":"

\u203b\u6b64\u6587\u662f\u57fa\u4e8e\u6f14\u8bb2\u5185\u5bb9\u6574\u7406\u800c\u6210\u7684\uff0c\u4f46\u5176\u603b\u7ed3\u4e86\u672c\u4eba\u6240\u7406\u89e3\u7684\u5185\u5bb9\u3002\u6587\u4e2d\u7684\u9519\u8bef\u7b49\u5747\u7531\u672c\u4eba\u8d1f\u8d23\u3002<\/p>\n

\u6211\u53bb\u53c2\u52a0\u4e86\u5728\u4e1c\u4eac\u56fd\u9645\u8bba\u575b\u4e3e\u529e\u7684Java Day Tokyo\u6d3b\u52a8\uff0c\u65e5\u671f\u662f2015\u5e744\u67088\u65e5\u3002
\n\u5728\u5176\u4e2d\u7684\u4e00\u4e2a\u8bb2\u5ea7\u4e2d\uff0c\u6211\u542c\u4e86\u5bfa\u7530\u4f73\u592e\u5148\u751f\u7684\u300aJava EE 7 \u7cbe\u534e\u79d8\u8bc0\u300b\uff0c\u6240\u4ee5\u6211\u5c06\u4e00\u4e9b\u6211\u80fd\u591f\u8ddf\u4e0a\u7684\u5185\u5bb9\u6574\u7406\u4e86\u8d77\u6765\u3002<\/p>\n

\u6211\u6b63\u5728\u67e5\u770b\u516c\u5f00\u7684\u5e7b\u706f\u7247\u548c\u7b14\u8bb0\uff0c\u56de\u5fc6\u8d77\u5e76\u4e66\u5199\u4e0b\u6765\u3002<\/p>\n

\u7ba1\u63a7 Bean JSR-250\u53d7\u7ba1\u7406\u7684Bean\u7528\u4e8e\u8d44\u6e90\u5f15\u7528\u3001\u5b9e\u4f8b\u751f\u6210\u548c\u5b9e\u4f8b\u9500\u6bc1\u3002JSR-250\u63d0\u4f9b\u4e86\u8bb8\u591a\u6ce8\u91ca\u9009\u9879\uff0c\u4f46@ManagedBean\u6ce8\u91ca\u51e0\u4e4e\u4e0d\u5e38\u7528\u3002<\/p>\n

\u8d44\u6e90\u5f15\u7528\u901a\u8fc7\u6ce8\u89e3\u3002<\/p>\n

\u4e0d\u6070\u5f53\u7684\u5199\u6cd5<\/p>\n
InitialContext<\/span> id<\/span> =<\/span> new<\/span> InitialContext<\/span>();<\/span>\r\nic<\/span>.<\/span>lookup<\/span>(<\/span>\"java:comp\/DefaultManagedExecutorService\"<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u4f7f\u7528JNDI\u8fdb\u884c\u67e5\u627e\u5e76\u4e0d\u7406\u60f3\u3002<\/p>\n
\u73b0\u4ee3\u7684\u5199\u4f5c\u65b9\u5f0f<\/p>\n
@Resource<\/span>(<\/span>name<\/span>=<\/span>\"comp\/DefaultManagedExecutorService\"<\/span>)<\/span>\r\nManagedExecutorService<\/span> managedExecSvc<\/span>;<\/span>\r\n<\/code><\/pre>\n
\u4f7f\u7528@Resource\u6ce8\u91ca\u3002<\/p>\n
\u4e0d\u4f7f\u7528\u6784\u9020\u51fd\u6570\u5728\u8c03\u7528\u6784\u9020\u51fd\u6570\u65f6\uff0c\u7531\u4e8e\u4f9d\u8d56\u6ce8\u5165\uff08DI\uff09\u5c1a\u672a\u5b8c\u6210\uff0c\u53ef\u80fd\u4f1a\u5f15\u53d1\u7a7a\u6307\u9488\u5f02\u5e38\u3002<\/p>\n
\u73b0\u4ee3\u7684\u5199\u4f5c\u65b9\u5f0f<\/p>\n
public<\/span> class<\/span> Foo<\/span>()<\/span> {<\/span>\r\n\r\n  @PostConstruct<\/span>\r\n  public<\/span> void<\/span> init<\/span>()<\/span> {<\/span>\r\n    \/\/ ...<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5728\u6807\u6709@PostConstruct\u7684\u65b9\u6cd5\u4e2d\u521d\u59cb\u5316\u7c7b\u3002<\/p>\n
\u62e6\u622a\u5668 JSR-318\u4f7f\u7528Java\u5b9e\u73b0AOP\u7684\u4e1c\u897f\u3002\u5728EE5\u4e2d\u53ea\u80fd\u7528\u4e8eEJB\u3002\u5728EE6\u4e2d\u9700\u8981\u4f7f\u7528XML\u3002\u5728EE7\u4e2d\u53ea\u9700\u8981\u6dfb\u52a0@Priority\u6ce8\u89e3\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n
\u4f7f\u7528\u62e6\u622a\u5668\uff0c\u53ef\u4ee5\u5c06\u9664\u4e86\u4e1a\u52a1\u903b\u8f91\u4e4b\u5916\u7684\u5904\u7406\uff08\u5982\u65e5\u5fd7\u8f93\u51fa\u548c\u6267\u884c\u65f6\u95f4\u6d4b\u91cf\uff09\u88c5\u5165\u6ce8\u89e3\u4e2d\u3002<\/p>\n
\u6bd4\u5982\u6d4b\u91cf\u65b9\u6cd5\u6267\u884c\u7684\u65f6\u95f4<\/p>\n
\u4e0d\u597d\u7684\u5199\u6cd5<\/p>\n
public<\/span> void<\/span> executeSomeMethod1<\/span>()<\/span> {<\/span>\r\n long<\/span> start<\/span> =<\/span> System<\/span>.<\/span>currenTimeMillis<\/span>();<\/span>\r\n\r\n \/\/ \u96e3\u3057\u3044\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af<\/span>\r\n\r\n long<\/span> end<\/span> =<\/span> System<\/span>.<\/span>currentTimeMillis<\/span>();<\/span>\r\n long<\/span> time<\/span> =<\/span> end<\/span> -<\/span> start<\/span>;<\/span>\r\n logger<\/span>.<\/span>log<\/span>(<\/span>Level<\/span>.<\/span>DEBUG<\/span>,<\/span> \"\u5b9f\u884c\u6642\u9593:\"<\/span> +<\/span> time<\/span>);<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u65b9\u6cd5\u4e2d\u5305\u542b\u4e86\u4e0e\u60f3\u8981\u5b9e\u73b0\u7684\u4e1a\u52a1\u903b\u8f91\uff08\u4e1a\u52a1\u6d41\u7a0b\uff09\u65e0\u5173\u7684\u4ee3\u7801\u3002<\/p>\n
\u73b0\u4ee3\u7684\u5199\u4f5c\u65b9\u5f0f<\/p>\n
@MySimpleProfilerInterceptor<\/span>\r\npublic<\/span> void<\/span> executeSomeMethod1<\/span>()<\/span> {<\/span>\r\n  \/\/ \u96e3\u3057\u3044\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u53ea\u9700\u8981\u5728\u65b9\u6cd5\u4e0a\u6dfb\u52a0\u6ce8\u91ca\uff0c\u7136\u540e\u5355\u72ec\u7f16\u5199\u5904\u7406\u6ce8\u91ca\u7684\u4ee3\u7801\u3002<\/p>\n
Bean\u9a8c\u8bc1JSR-349\u5f53\u9700\u8981\u9a8c\u8bc1Bean\u4e2d\u8bbe\u7f6e\u7684\u503c\u65f6\uff0c\u5e94\u4f7f\u7528\u6ce8\u91ca\u800c\u4e0d\u662f\u903b\u8f91\u6765\u7f16\u5199\u3002<\/p>\n
\u73b0\u4ee3\u7684\u5199\u4f5c\u65b9\u5f0f<\/p>\n
public<\/span> class<\/span> Foo<\/span> {<\/span>\r\n\r\n  @NotNull<\/span>\r\n  @Size<\/span>(<\/span>min<\/span> =<\/span> 1<\/span>)<\/span>\r\n  private<\/span> String<\/span> name<\/span>;<\/span>\r\n\r\n  @NotNull<\/span>\r\n  @Size<\/span>(<\/span>max<\/span> =<\/span> 8<\/span>)<\/span>\r\n  @Pattern<\/span>(<\/span>\"^\\\\d{3}-\\\\d{4}$\"<\/span>)<\/span>\r\n  private<\/span> String<\/span> zipCode<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
JSR-330\u662f\u4e00\u4e2a\u53ef\u4ee5\u9009\u62e9\u7684\u4fdd\u7559\u9488\u5bf9DI\u7684\u89c4\u8303\u3002\u5728EE\u73af\u5883\u4e2d\uff0c\u4f7f\u7528@Inject\u548c@Qualifier\u6ce8\u89e3\u3002\u5728JSF\u76f8\u5173\u90e8\u5206\u4f7f\u7528@Named\u6ce8\u89e3\u3002<\/p>\n
\u5728\u5b9e\u4f8b\u5316\u4e2d\u4e0d\u4f7f\u7528new\u5173\u952e\u5b57\u5728\u65b0\u7248\u672c\u4e2d\uff0c\u7c7b\u4e4b\u95f4\u7d27\u5bc6\u76f8\u8fde\u3002\u5b9e\u4f8b\u7684\u521b\u5efa\u59d4\u6258\u7ed9\u5bb9\u5668\uff0c\u901a\u8fc7@Inject\u8fdb\u884c\u6ce8\u5165\u3002<\/p>\n
\u4e0d\u592a\u597d\u7684\u8868\u8fbe\u65b9\u5f0f<\/p>\n
public<\/span> class<\/span> Foo<\/span> {<\/span>\r\n\r\n  public<\/span> void<\/span> listBar<\/span>()<\/span> {<\/span>\r\n    BarDAO<\/span> =<\/span> barDAO<\/span> =<\/span> new<\/span> BarDAOFromCSV<\/span>();<\/span>\r\n    \/\/ ...<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5373\u4f7f\u60f3\u8981\u5c06BarDAO\u66ff\u6362\u4e3a\u5176\u4ed6\u7684\u5b9e\u73b0\uff0c\u4e5f\u65e0\u6cd5\u505a\u5230\u3002<\/p>\n
\u73b0\u5982\u4eca\u7684\u5199\u4f5c\u65b9\u5f0f<\/p>\n
public<\/span> class<\/span> Foo<\/span> {<\/span>\r\n\r\n  @Inject<\/span>\r\n  private<\/span> BarDAO<\/span> barDAO<\/span>;<\/span>\r\n\r\n  public<\/span> void<\/span> listBar<\/span>()<\/span> {<\/span>\r\n    \/\/ ...<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u4ee5\u540e\u53ef\u4ee5\u7528\u5176\u4ed6\u4e1c\u897f\u66ff\u6362BarDAO\u5b9e\u73b0\u3002<\/p>\n
\u591a\u4e2a\u5b9e\u65bd\u65b9\u6848\u65f6\u7684\u533a\u5206\u65b9\u6cd5\u5047\u8bbe\u6709\u4e00\u79cd\u540d\u4e3aFoo\u7684\u5b9e\u73b0\uff0c\u5206\u522b\u6709FooMan\u548cFooWoman\u3002<\/p>\n
public<\/span> class<\/span> FooMan<\/span> implements<\/span> Foo<\/span> {<\/span>\r\n  \/\/ ...<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
public<\/span> class<\/span> FooWoman<\/span> implements<\/span> Foo<\/span> {<\/span>\r\n  \/\/ ...<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5199\u6cd5\u6709\u8bef\u5bfc\u81f4\u9519\u8bef\u3002\u5f53\u6709\u4e24\u4e2a\u5b9e\u73b0Foo\u7684\u7c7b\u65f6\uff0c\u4e0b\u9762\u7684\u5199\u6cd5\u65e0\u6cd5\u89e3\u51b3\u4f9d\u8d56\u5173\u7cfb\uff0c\u4ece\u800c\u4f1a\u5bfc\u81f4\u9519\u8bef\u3002<\/p>\n
public<\/span> class<\/span> Baz<\/span> {<\/span>\r\n\r\n  @Inject<\/span>\r\n  private<\/span> Foo<\/span> foo<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u89e3\u51b3\u65b9\u6848\uff1a\u521b\u5efa\u5e76\u4f7f\u7528Qualifier\u521b\u5efa\u7528\u4e8e\u6807\u8bc6\u7c7b\u7684Qualifier\uff0c\u5e76\u5728\u7c7b\u548c\u6ce8\u5165\u70b9\u4e0a\u8fdb\u884c\u6ce8\u91ca\u6807\u6ce8\u3002<\/p>\n
\u5728\u6ce8\u5165\u7684\u7c7b\u4e0a\u52a0\u4e0aQualifier…<\/p>\n
@ManQualifier<\/span>\r\npublic<\/span> class<\/span> FooMan<\/span> implements<\/span> Foo<\/span> {<\/span>\r\n  \/\/ ...<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
@WomanQualifier<\/span>\r\npublic<\/span> class<\/span> FooWoman<\/span> implements<\/span> Foo<\/span> {<\/span>\r\n  \/\/ ...<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5728\u6ce8\u5165\u70b9\u4e0a\u6dfb\u52a0\u9650\u5b9a\u7b26\u3002<\/p>\n
public<\/span> class<\/span> Baz<\/span> {<\/span>\r\n\r\n  @ManQualifier<\/span>\r\n  @Inject<\/span>\r\n  private<\/span> Foo<\/span> fooMan<\/span>;<\/span>\r\n\r\n  @WomanQualifier<\/span>\r\n  @Inject<\/span>\r\n  private<\/span> Foo<\/span> fooWoman<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u8fd9\u6837\u505a\u5c31\u4e0d\u4f1a\u51fa\u9519\uff0c\u5e76\u4e14\u4f1a\u6ce8\u5165\u6240\u671f\u671b\u7684\u7c7b\u3002<\/p>\n
\u5236\u4f5c\u81ea\u5b9a\u4e49\u9650\u5b9a\u7b26\u65f6\u9700\u8981\u6ce8\u610f\u7684\u4e8b\u9879\u5982\u679c\u4e0d\u5236\u5b9a\u547d\u540d\u7ea6\u5b9a\u6216\u5c06\u5176\u653e\u5165\u4e13\u7528\u7684\u8f6f\u4ef6\u5305\u4e2d\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6df7\u4e71\u3002<\/p>\n
\u5f53\u9700\u8981\u4e0d\u53ef\u53d8\uff08Immutable\uff09\u7684\u5b9e\u4f8b\u65f6<\/p>\n
\u6709\u8bef\u7684\u4e66\u5199\u65b9\u5f0f\u65e0\u6cd5\u5c06\u6ce8\u5165\u70b9\u8bbe\u4e3afinal\uff0c\u56e0\u6b64\u4f1a\u51fa\u73b0\u9519\u8bef\u3002<\/p>\n
public<\/span> class<\/span> FooService<\/span> {<\/span>\r\n\r\n  @Inject<\/span>\r\n  private<\/span> final<\/span> Foo<\/span> foo<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u89e3\u51b3\u65b9\u6848\uff1a\u4f7f\u7528\u6784\u9020\u51fd\u6570\u6ce8\u5165\u653e\u5f03\u5c5e\u6027\u6ce8\u5165\uff0c\u6539\u7528\u6784\u9020\u51fd\u6570\u6ce8\u5165\u53ef\u4ee5\u4f7f\u7528final\u3002<\/p>\n
public<\/span> class<\/span> FooService<\/span> {<\/span>\r\n\r\n  private<\/span> final<\/span> Foo<\/span> foo<\/span>;<\/span>\r\n\r\n  @Inject<\/span>\r\n  public<\/span> FooService<\/span>(<\/span>Foo<\/span> foo<\/span>)<\/span> {<\/span>\r\n    this<\/span>.<\/span>foo<\/span> =<\/span> foo<\/span>;<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5f53\u6709\u592a\u591a\u5b9e\u73b0\u65f6\uff0c\u5728\u7b5b\u9009\u4e2d\u4f1a\u53d8\u5f97\u5f88\u9ebb\u70e6\u3002\u4f7f\u7528@Named\u6ce8\u91ca\u53ef\u4ee5\u8fdb\u884c\u533a\u5206\uff0c\u4f46\u4e0d\u884c\u3002\u4e0d\u884c\u4e0d\u884c\u3002<\/p>\n
\u5f53\u60f3\u8981\u5c06@Named\u4f20\u9012\u7ed9JSF\u6216EL\u8868\u8fbe\u5f0f\u65f6\u4f7f\u7528\u3002<\/p>\n
\u4f20\u7edf\u5de5\u4e1a\u53d1\u5c55\u59d4\u5458\u4f1a CDI JSR-346<\/p>\n
CDI\u9ed8\u8ba4\u542f\u7528
\n\u81eaJava EE 7\u8d77\u9ed8\u8ba4\u5df2\u542f\u7528\u3002<\/p>\n
Java EE 6\u4f7f\u7528\u4e86\u540d\u4e3abeans.xml\u7684\u6587\u4ef6\u3002\u800c\u5728Java EE 7\u4e2d\uff0c\u901a\u8fc7\u4e3a\u7c7b\u6dfb\u52a0\u6ce8\u89e3\uff0c\u4f7f\u5f97\u7c7b\u80fd\u591f\u88ab\u5bb9\u5668\u52a0\u8f7d\u3002<\/p>\n
\u5f53\u60a8\u5e0c\u671b\u5c06\u7269\u54c1\u653e\u5165\u5bb9\u5668\u65f6\uff0c\u8bf7\u9644\u4e0a\u4ee5\u4e0b\u7684\u6807\u6ce8\u3002<\/p>\n
@NormalScoped\u3092\u7d99\u627f\u3057\u305f\u3082\u306e
\n@Dependent<\/p>\n
\u53ef\u4ee5\u4f7f\u7528beans.xml\u5c06\u6240\u6709\u7c7b\u653e\u5165\u5bb9\u5668\u4e2d\uff0c\u4f46\u662f\u7531\u4e8e\u542f\u52a8\u4f1a\u53d8\u6162\u6240\u4ee5\u4e0d\u884c\u3002<\/p>\n
CDI\u7ba1\u7406\u7684Bean\u662f\u4ec0\u4e48\uff1f\u901a\u8fc7CDI\u5bb9\u5668\u81ea\u52a8\u751f\u6210\u7684\u4ee3\u7406bean\u3002<\/p>\n
CDI\u4f1a\u81ea\u52a8\u751f\u6210bean\u7684\u4ee3\u7406\u7c7b\u3002\u6ce8\u5165\u70b9\u5c06\u5b9e\u9645\u6ce8\u5165\u4ee3\u7406\u7c7b\u7684\u5b9e\u4f8b\u3002<\/p>\n
\u60f3\u8981\u5b9e\u73b0\u5355\u4f8b\u6a21\u5f0f\u7684\u65f6\u5019<\/p>\n
\u4e0d\u6070\u5f53\u7684\u5199\u6cd5 (B\u00f9 de\u56e0\u4e3ajavax.inject.Singleton\u4e0d\u662f@NormalScoped\u7684\u7ee7\u627f\u7c7b\uff0c\u6240\u4ee5\u4e0d\u80fd\u6210\u4e3aCDI\u6258\u7ba1\u7684Bean\u3002<\/p>\n
@javax<\/span>.<\/span>inject<\/span>.<\/span>Singleton<\/span>\r\npublic<\/span> class<\/span> Ng<\/span> {<\/span>\r\n  \/\/ ...<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u89e3\u51b3\u65b9\u6848\uff1a\u4f7f\u7528ApplicationScoped<\/p>\n
@javax<\/span>.<\/span>enterprise<\/span>.<\/span>context<\/span>.<\/span>ApplicationScoped<\/span>\r\npublic<\/span> class<\/span> Ok<\/span> {<\/span>\r\n  \/\/ ...<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5728\u90e8\u7f72\u65f6\u5207\u6362\u591a\u4e2a\u53ef\u7528\u7684\u5b9e\u65bd\u7248\u672c\u5728beans.xml\u6587\u4ef6\u4e2d\u4f7f\u7528@Alternative\u6ce8\u89e3\u5c06\u7c7b\u5207\u6362\u3002<\/p>\n
@Alternative<\/span>\r\n@Dependent<\/span>\r\npublic<\/span> class<\/span> Foo1<\/span> implements<\/span> Foo<\/span> {<\/span>\r\n  \/\/ ...<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
@Alternative<\/span>\r\n@Dependent<\/span>\r\npublic<\/span> class<\/span> Foo2<\/span> implements<\/span> Foo<\/span> {<\/span>\r\n  \/\/ ...<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5c06beans.xml\u4e0e\u7c7b\u6587\u4ef6\u653e\u5165\u76f8\u540c\u7684\u5b58\u6863\u4e2d\u3002<\/p>\n
<beans<\/span> xmlns=<\/span>\"http:\/\/java.sun.com\/xml\/ns\/javaee\"<\/span>\r\n    xmlns:xsi=<\/span>\"http:\/\/www.w3.org\/2001\/XMLSchema-instance\"<\/span>\r\n    xsi:schemaLocation=<\/span>\"http:\/\/java.sun.com\/xml\/ns\/javaee http:\/\/java.sun.com\/xml\/ns\/javaee\/beans_1_0.xsd\"<\/span>><\/span>\r\n    <alternatives><\/span>\r\n        <class><\/span>Foo2<\/class><\/span>\r\n    <\/alternatives><\/span>\r\n<\/beans><\/span>\r\n<\/code><\/pre>\n
\u4f7f\u7528Foo2\u3002<\/p>\n
Qualifier\u5728beans.xml\u4e2d\u5177\u6709\u4f18\u5148\u6743\u3002\u5982\u679c\u4e3a\u7c7b\u6dfb\u52a0Qualifier\uff0c\u5219@Alternative\u5c06\u4e0d\u8d77\u4f5c\u7528\uff0c\u5e76\u4e14\u5c06\u5ffd\u7565beans.xml\u4e2d\u7684\u8bbe\u7f6e\u3002<\/p>\n
\u4f60\u53ef\u4ee5\u7ed9\u7c7b\u52a0\u4e0a@Specialized\u6765\u5b9e\u73b0\u30023<\/p>\n
\u53ef\u4ee5\u4f7f\u7528@Produces\u6ce8\u89e3\u6765\u6ce8\u5165\u4e0d\u662fCDI Managed Bean\u7684\u5bf9\u8c61\u3002\u65b9\u6cd5\uff1a<\/p>\n
    \n
  1. \n
      \u521b\u5efa\u4e00\u4e2a Qualifer<\/ol>\n<\/li>\n<\/ol>\n
       <\/p>\n
        \n
      1. \n
          \u521b\u5efa\u4e00\u4e2a\u63d0\u4f9b\u5b9e\u4f8b\u7684\u7c7b<\/ol>\n<\/li>\n<\/ol>\n
           <\/p>\n
            \u5728\u63d0\u4f9b\u5b9e\u4f8b\u7684\u65b9\u6cd5\u4e0a\u6dfb\u52a0\u521b\u5efa\u7684 Qualifer \u548c @Produces \u6ce8\u89e3<\/ol>\n
            \u7ed9\u5f88\u591a\u6ce8\u91ca\u5f88\u9ebb\u70e6\u7528\u523b\u677f\u5370\u8c61\u6765\u89e3\u51b3\u5b83\u3002<\/p>\n
            \u8fd9\u79cd\u5199\u6cd5\u5f88\u7e41\u7410\u6709\u5f88\u591a\u6807\u6ce8\uff0c\u51e0\u4e4e\u8981\u5fd8\u8bb0\u4e86\u3002<\/p>\n
            @RequestScoped<\/span>\r\n@Foo<\/span>\r\n@Bar<\/span>\r\n@Baz<\/span>\r\n@Qux<\/span>\r\npublic<\/span> class<\/span> Stress<\/span> {<\/span>\r\n  \/\/ ...<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
            \u89e3\u51b3\u65b9\u6848\uff1a\u5c06\u5e38\u7528\u7684\u6807\u6ce8\u5f52\u7c7b\u4e3a\u523b\u677f\u5370\u8c61\u3002\u521b\u9020\u523b\u677f\u5370\u8c61\u3002<\/p>\n
            @Stereotype<\/span>\r\n@RequestScoped<\/span>\r\n@Foo<\/span>\r\n@Bar<\/span>\r\n@Baz<\/span>\r\n@Qux<\/span>\r\n@Target<\/span>(<\/span>TYPE<\/span>)<\/span>\r\n@Retention<\/span>(<\/span>RUNTIME<\/span>)<\/span>\r\npublic<\/span> @interface<\/span> MyStereotype<\/span> {}<\/span>\r\n<\/code><\/pre>\n
            \u4f7f\u7528\u5df2\u521b\u4f5c\u597d\u7684\u523b\u677f\u5370\u8c61\u3002\u6e05\u723d\u3002<\/p>\n
            @MyStereotype<\/span>\r\npublic<\/span> class<\/span> Relax<\/span> {<\/span>\r\n\r\n  \/\/ ...<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
            \u6709\u5185\u7f6e\u7684\u523b\u677f\u5370\u8c61@Model\u548c@Named\u548c@RequestScoped\u4e00\u6837\u3002<\/p>\n
            \u521b\u9020\u72ec\u7279\u7684\u523b\u677f\u5370\u8c61\u65f6\u8981\u6ce8\u610f\u4ec0\u4e48\u5982\u679c\u4e0d\u5236\u5b9a\u547d\u540d\u89c4\u8303\u6216\u8005\u5c06\u5176\u653e\u5165\u4e13\u95e8\u7684\u5305\u4e2d\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6df7\u4e71\u3002<\/p>\n
            \u4f7f\u7528CDI\u4e2d\u7684\u89c2\u5bdf\u8005\u6a21\u5f0f\u5982\u679c\u4f7f\u7528CDI\uff0c\u89c2\u5bdf\u8005\u6a21\u5f0f\u4e5f\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u3002<\/p>\n
            \u4e8b\u4ef6\u53d1\u5e03\u65b9
            \n\u6ce8\u5165Event<?>\u5e76\u8c03\u7528fire\u65b9\u6cd5\u3002<\/p>\n
            @Dependent<\/span>\r\npublic<\/span> class<\/span> FireStartar<\/span> {<\/span>\r\n\r\n  @Inject<\/span>\r\n  Event<\/span><<\/span>Foo<\/span>><\/span> fooEvent<\/span>;<\/span> \/\/ \u5f15\u6570\u306b\u3057\u305f\u3044\u30af\u30e9\u30b9\u3092\u6307\u5b9a\u3059\u308b<\/span>\r\n\r\n  public<\/span> void<\/span> executeSomething<\/span>()<\/span> {<\/span>\r\n    \/\/ \u30a4\u30d9\u30f3\u30c8\u767a\u706b<\/span>\r\n    fooEvent<\/span>.<\/span>fire<\/span>(<\/span>new<\/span> Foo<\/span>());<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
            \u63a5\u6536\u4e8b\u4ef6\u4f7f\u7528@Observes\u3002<\/p>\n
            @Dependent<\/span>\r\npublic<\/span> class<\/span> FireWorks<\/span> {<\/span>\r\n\r\n  public<\/span> void<\/span> startFire<\/span>(<\/span>@Observes<\/span> Foo<\/span> foo<\/span>)<\/span> {<\/span>\r\n    \/\/ ...<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
            CDI\u7684\u4e8b\u4ef6\u662f\u540c\u6b65\u5904\u7406\u3002 (CDI de sh\u00ec\u56e0\u4e3a\u76f4\u5230\u6d3b\u52a8\u7ed3\u675f\u8fd8\u6ca1\u6709\u8fd4\u56de\uff0c\u6240\u4ee5\u4e0d\u9002\u5408\u7528\u4e8e\u7e41\u91cd\u7684\u5904\u7406\u4efb\u52a1\u3002<\/p>\n
            \u4f7f\u7528EJB\u6216JMS\u4ee3\u66ff\u3002<\/p>\n
            \u6700\u540e\u4e00\u70b9\uff1a\u4e0d\u8981\u5c06\u4efb\u4f55\u4e1c\u897f\u90fd\u88c5\u5728\u5bb9\u5668\u91cc\u3002\u53ea\u653e\u4e0a\u9700\u8981\u7684\u529f\u80fd\u3002<\/p>\n
            \n
            \u5982\u679c\u5728\u8bfe\u7a0b\u4e2d\u52a0\u4e0a\u9650\u5b9a\u7b26\u4ee5\u8fdb\u884c\u8bc6\u522b\uff0c\u5373\u4f7f\u4e4b\u540e\u60f3\u8981\u8fdb\u884c\u5b9e\u73b0\u7684\u66f4\u6539\u4e5f\u65e0\u6cd5\u8fdb\u884c\u66f4\u6362\uff0c\u5e76\u4e14\u4e0d\u80fd\u5b9e\u73b0\u677e\u6563\u8026\u5408\u2026\u2026\uff1f\uff1f\uff1f<\/p>\n
            \u8fd9\u8fb9\u6bd4\u9009\u62e9\u9650\u5b9a\u7b26\u66f4\u597d\u3002<\/p>\n
            \u5bf9\u8fd9\u4e9b\u65b9\u9762\u4e0d\u662f\u5f88\u4e86\u89e3\u3002<\/p>\n
            \u5f88\u53ef\u80fd\u662f\u7528\u4e8eJSF\u7684\u540e\u7aefbean\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
            \u203b\u6b64\u6587\u662f\u57fa\u4e8e\u6f14\u8bb2\u5185\u5bb9\u6574\u7406\u800c\u6210\u7684\uff0c\u4f46\u5176\u603b\u7ed3\u4e86\u672c\u4eba\u6240\u7406\u89e3\u7684\u5185\u5bb9\u3002\u6587\u4e2d\u7684\u9519\u8bef\u7b49\u5747\u7531\u672c\u4eba\u8d1f\u8d23\u3002 \u6211\u53bb\u53c2\u52a0\u4e86\u5728\u4e1c\u4eac\u56fd\u9645\u8bba […]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-31273","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"\n[Java][Java EE] 2015\u5e74\u4e1c\u4eacJava\u65e5\uff0c\u201cJava EE 7\u6838\u5fc3\u914d\u65b9\u201d\u5bfa\u7530\u4f73\u592e\u5148\u751f\u7684\u8bb2\u5ea7\u603b\u7ed3 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8e[Java][Java EE] 2015\u5e74\u4e1c\u4eacJava\u65e5\uff0c\u201cJava EE 7\u6838\u5fc3\u914d\u65b9\u201d\u5bfa\u7530\u4f73\u592e\u5148\u751f\u7684\u6280\u672f\u6587\u7ae0\" \/>\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\/javajava-ee-2015\u5e74\u4e1c\u4eacjava\u65e5\uff0cjava-ee-7\u6838\u5fc3\u914d\u65b9\u5bfa\u7530\u4f73\u592e\u5148\u751f\u7684\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Java][Java EE] 2015\u5e74\u4e1c\u4eacJava\u65e5\uff0c\u201cJava EE 7\u6838\u5fc3\u914d\u65b9\u201d\u5bfa\u7530\u4f73\u592e\u5148\u751f\u7684\u8bb2\u5ea7\u603b\u7ed3\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8e[Java][Java EE] 2015\u5e74\u4e1c\u4eacJava\u65e5\uff0c\u201cJava EE 7\u6838\u5fc3\u914d\u65b9\u201d\u5bfa\u7530\u4f73\u592e\u5148\u751f\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/javajava-ee-2015\u5e74\u4e1c\u4eacjava\u65e5\uff0cjava-ee-7\u6838\u5fc3\u914d\u65b9\u5bfa\u7530\u4f73\u592e\u5148\u751f\u7684\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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