{"id":913,"date":"2020-11-25T17:22:52","date_gmt":"2020-11-25T09:22:52","guid":{"rendered":"http:\/\/prayerlaputa.com\/?p=913"},"modified":"2020-11-25T17:22:52","modified_gmt":"2020-11-25T09:22:52","slug":"spring%e4%b8%ad%e5%8a%a0%e6%b3%a8%e8%a7%a3%e6%96%b9%e6%b3%95%e8%a2%ab%e5%90%8c%e4%b8%80%e4%b8%aa%e7%b1%bb%e5%86%85%e9%83%a8%e6%96%b9%e6%b3%95%e8%b0%83%e7%94%a8%e5%af%bc%e8%87%b4aop%e5%a4%b1%e6%95%88","status":"publish","type":"post","link":"http:\/\/prayerlaputa.com\/?p=913","title":{"rendered":"spring\u4e2d\u52a0\u6ce8\u89e3\u65b9\u6cd5\u88ab\u540c\u4e00\u4e2a\u7c7b\u5185\u90e8\u65b9\u6cd5\u8c03\u7528\u5bfc\u81f4AOP\u5931\u6548\u7684\u89e3\u51b3\u65b9\u6848(\u5982@Transactional\u6ce8\u89e3\u5931\u6548)"},"content":{"rendered":"

\u73b0\u8c61<\/span><\/h2>\n

\u793a\u4f8b\uff1a<\/span><\/p>\n

public<\/span> class<\/span> A<\/span> {<\/span>\r\n \u00a0 \u00a0\/\/......<\/span><\/span>\r\n \u00a0 \u00a0<\/span>\r\n \u00a0 \u00a0@Transactional<\/span><\/span>\r\n \u00a0 \u00a0public<\/span> void<\/span> serviceA<\/span>() {<\/span>\r\n \u00a0 \u00a0 \u00a0  ......<\/span>\r\n \u00a0  }<\/span>\r\n \u00a0 \u00a0<\/span>\r\n    public<\/span> void<\/span> serviceB<\/span>() {<\/span>\r\n \u00a0 \u00a0 \u00a0  ......<\/span>\r\n \u00a0 \u00a0 \u00a0 \u00a0serviceA<\/span>()<\/span>\r\n \u00a0 \u00a0 \u00a0  ......<\/span>\r\n \u00a0  }<\/span>\r\n}<\/span><\/pre>\n
<\/p>\n
\u5927\u6982\u591a\u6570\u4eba\u90fd\u4f1a\u9047\u5230\u8fd9\u4e48\u4e00\u4e2a\u5751\uff0c\u5982\u679c\u4f7f\u7528spring\u7684@Transactional\u7ed9A\u7c7b\u4e2d\u7684\u67d0\u4e2a\u4e1a\u52a1\u65b9\u6cd5serviceA()\u52a0\u4e8b\u52a1\uff0c\u5728controller\u5c42\u76f4\u63a5\u8c03\u7528serviceA()\u65f6\uff0c\u8be5\u65b9\u6cd5\u7684\u4e8b\u52a1\u6ce8\u89e3\u80fd\u6b63\u5e38\u751f\u6548\uff1b\u4f46\u5982\u679c\u5728A\u7c7b\u4e2d\u7684serviceB()\u8c03\u7528serviceA()\uff0c\u5e76\u4e14servcieB\u6ca1\u6709\u52a0\u4e8b\u52a1@Transactional\uff0c\u90a3\u4e48\u6b64\u65f6\u5b9e\u9645\u4e0aserviceA()\u4e0a\u7684@Transactional\u5e76\u672a\u751f\u6548\u3002<\/span><\/p>\n
\u539f\u56e0<\/span><\/h2>\n
\u60f3\u8bb2\u6e05\u8fd9\u4e2a\u95ee\u9898\u5c31\u5fc5\u987b\u4e86\u89e3spring AOP\u7684\u5185\u90e8\u5b9e\u73b0\u539f\u7406\u3002<\/span><\/p>\n
\u5728spring\u4e2d\u7ecf\u5e38\u4f7f\u7528\u81ea\u5b9a\u4e49\u6ce8\u89e3\u6216\u662fspring\u5df2\u5c01\u88c5\u597d\u7684\u6ce8\u89e3\uff0c\u901a\u8fc7AOP\u7684\u65b9\u5f0f\u590d\u7528\u4ee3\u7801\u3001\u907f\u514d\u91cd\u590d\u52b3\u52a8\u3002\u800cspring\u5b9e\u73b0AOP\u662f\u901a\u8fc7\u52a8\u6001\u4ee3\u7406\u6765\u5b9e\u73b0\u7684\uff0c\u9ed8\u8ba4\u6709\u63a5\u53e3\u7684\u60c5\u51b5\u4f7f\u7528JDK\u7684\u52a8\u6001\u4ee3\u7406\uff08\u4e5f\u53ef\u4ee5\u901a\u8fc7\u914d\u7f6eproxyTargetClass\u6765\u6307\u5b9a\u4f7f\u7528CGLIB\uff09\u3001\u6ca1\u6709\u63a5\u53e3\u7684\u60c5\u51b5\u4f7f\u7528CGLIB\u3002<\/span><\/p>\n
\u4f46\u65e0\u8bba\u662f\u54ea\u4e00\u79cd\u4ee3\u7406\uff0c\u90fd\u662f\u5728\u539f\u6709\u65b9\u6cd5\u7684\u5916\u9762\u5305\u4e00\u5c42\u3001\u5728\u65b9\u6cd5\u5916\u7684\u4ee3\u7406\u5c42\u6765\u5b9e\u73b0AOP\u7684\u903b\u8f91\u3002\u4ee5\u4e0a\u9762\u4e3a\u4f8b\uff0c\u5728\u4ee3\u7406\u540e\u4f1a\u5728serviceA()\u5916\u5c42\u589e\u52a0\u4e8b\u52a1\u76f8\u5173\u903b\u8f91\uff1a<\/span><\/p>\n
\/\/\u539f\u59cb\u4ee3\u7801<\/span>\r\nserviceA() {<\/span>\r\n......<\/span>\r\n}<\/span>\r\n\u200b<\/span>\r\n\/\/\u52a0\u4e0a\u6ce8\u89e3\u540e<\/span>\r\nserviceAProxy() {<\/span>\r\n\/\/AOP\u6267\u884c\u524d\u903b\u8f91<\/span>\r\n......<\/span>\r\nserviceA()<\/span>\r\n\/\/AOP\u6267\u884c\u540e\u903b\u8f91<\/span>\r\n......<\/span>\r\n}<\/span><\/pre>\n
\u4f46\u8fd9\u4e2a\u524d\u63d0\u5c31\u662fspring\u76f4\u63a5\u8c03\u7528\u52a0\u4e86\u6ce8\u89e3\u7684\u65b9\u6cd5\u624d\u4f1a\u8c03\u7528\u4ee3\u7406\u65b9\u6cd5\uff0c\u5982\u679cserviceA\u88ab\u540c\u4e00\u4e2a\u7c7b\u5185\u90e8\u5176\u4ed6\u65b9\u6cd5\u8c03\u7528\uff0c\u90a3servcieA()\u5c31\u53ea\u662f\u4e00\u6bb5\u666e\u901a\u4ee3\u7801\u3001AOP\u76f8\u5173\u7684\u4fe1\u606f\u4e0d\u4f1a\u88abspring\u770b\u5230\uff0c\u90a3\u81ea\u7136\u5c31\u65e0\u6cd5\u6267\u884cAOP\u7684\u903b\u8f91\u3002<\/span><\/p>\n
\u89e3\u51b3<\/span><\/h2>\n
\u77e5\u9053\u539f\u7406\u540e\uff0c\u81ea\u7136\u4e5f\u5c31\u597d\u89e3\u51b3\u4e86\u3002<\/span><\/p>\n
AOP\u7684\u903b\u8f91\u5728\u4ee3\u7406\u540e\u7684\u65b9\u6cd5\u4e2d\uff0c\u90a3\u4e48\u6211\u4eec\u5c31\u53bb\u6267\u884cspring\u751f\u6210\u7684\u4ee3\u7406\u540e\u7684\u65b9\u6cd5\u3002\u83b7\u53d6\u65b9\u6cd5\u5982\u4e0b\uff1a<\/span><\/p>\n
\u65b9\u6cd51\uff1a\u901a\u8fc7\u5f53\u524d\u7c7b\u5bf9\u8c61\u83b7\u53d6<\/span><\/h3>\n
\u8fd9\u4e2a\u6709\u70b9\u53d6\u5de7\u3002\u8fd8\u662f\u4ee5\u4e0a\u9762serviceB()\u4e3a\u4f8b\uff0c\u6211\u4eec\u5982\u679c\u8c03\u7528this.serviceA()\uff0cthis\u6307\u5411\u5bf9\u8c61\u672c\u8eab\u3001\u4e0d\u4f1a\u6307\u5411\u4ee3\u7406\u540e\u7684\u5bf9\u8c61\uff0c\u56e0\u6b64\u80af\u5b9a\u4e0d\u53ef\u4ee5\uff0c\u4f46\u6211\u4eec\u53ef\u4ee5\u8ba9spring\u63d0\u4f9b\u7ed9\u6211\u4eec\u4ee3\u7406\u540e\u7684\u5bf9\u8c61\uff1a<\/span><\/p>\n
public<\/span> class<\/span> A<\/span>{<\/span>\r\n\u200b<\/span>\r\n \u00a0 \u00a0\/\/\u901a\u8fc7spring\u5c06\u4ee3\u7406\u540e\u5bf9\u8c61\u6ce8\u5165\u5230self\u53d8\u91cf<\/span><\/span>\r\n \u00a0 \u00a0@Autowired<\/span><\/span>\r\n \u00a0 \u00a0private<\/span> A<\/span> self<\/span>;<\/span>\r\n\u200b<\/span>\r\n \u00a0 \u00a0public<\/span> void<\/span> serviceB<\/span>() {<\/span>\r\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0  ......<\/span>\r\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/\u6b64\u5904\u8c03\u7528\u7684\u5c31\u662f\u4ee3\u7406\u540e\u7684\u65b9\u6cd5<\/span><\/span>\r\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0self<\/span>.serviceA<\/span>()<\/span>\r\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0  ......<\/span>\r\n \u00a0  }<\/span>\r\n}<\/span><\/pre>\n
\u65b9\u6cd52 \u4eceApplicationContext\u4e2d\u76f4\u63a5\u83b7\u53d6<\/span><\/h3>\n
\u83b7\u53d6ApplicationContext\u6709\u591a\u79cd\u65b9\u6cd5\uff1a<\/span><\/p>\n
\u65b9\u6cd52.1 \u4f7f\u7528AopContext.currentProxy()<\/span><\/h4>\n
\n
public<\/span> class<\/span> A<\/span> {<\/span>\r\n \u00a0 \u00a0public<\/span> void<\/span> serviceB<\/span>() {<\/span>\r\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0  ......<\/span>\r\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/\u6b64\u5904\u8c03\u7528\u7684\u5c31\u662f\u4ee3\u7406\u540e\u7684\u65b9\u6cd5<\/span><\/span>\r\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0  ((A<\/span>)AopContext<\/span>.currentProxy<\/span>()).serviceA<\/span>();<\/span>\r\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0  ......<\/span>\r\n \u00a0  }<\/span>\r\n}<\/span><\/pre>\n
\u4f7f\u7528AopContext.currentProxy()\u6ce8\u610f\u5fc5\u987b\u5728\u7a0b\u5e8f\u542f\u52a8\u65f6\u5f00\u542fEnableAspectJAutoProxy\u6ce8\u89e3\uff0c\u8bbe\u7f6e\u4ee3\u7406\u66b4\u9732\u65b9\u5f0f\u4e3atrue\uff0c\u5982\u4e0b\u9762\u6240\u793a\uff1a<\/span><\/p>\n
\/**<\/span><\/span>\r\n * EnableAspectJAutoProxy\u6ce8\u89e3\u4e24\u4e2a\u53c2\u6570\u4f5c\u7528\u5206\u522b\u4e3a\uff1a<\/span><\/span>\r\n *<\/span><\/span>\r\n * \u4e00\u4e2a\u662f\u63a7\u5236aop\u7684\u5177\u4f53\u5b9e\u73b0\u65b9\u5f0f,\u4e3atrue\u7684\u8bdd\u4f7f\u7528cglib,\u4e3afalse\u7684\u8bdd\u4f7f\u7528java\u7684Proxy\uff0c\u9ed8\u8ba4\u4e3afalse\u3002<\/span><\/span>\r\n * \u7b2c\u4e8c\u4e2a\u53c2\u6570\u63a7\u5236\u4ee3\u7406\u7684\u66b4\u9732\u65b9\u5f0f,\u89e3\u51b3\u5185\u90e8\u8c03\u7528\u4e0d\u80fd\u4f7f\u7528\u4ee3\u7406\u7684\u573a\u666f\uff0c\u9ed8\u8ba4\u4e3afalse\u3002<\/span><\/span>\r\n *<\/span><\/span>\r\n *<\/span><\/span>\r\n *\/<\/span><\/span>\r\n@EnableAspectJAutoProxy<\/span>(proxyTargetClass<\/span> =<\/span> true<\/span>, exposeProxy<\/span> =<\/span> true<\/span>)<\/span>\r\n@SpringBootApplication<\/span><\/span>\r\npublic<\/span> class<\/span> SpringAopApplication<\/span> {<\/span>\r\n\u200b<\/span>\r\n    public<\/span> static<\/span> void<\/span> main<\/span>(String<\/span>[] args<\/span>) {<\/span>\r\n        SpringApplication<\/span>.run<\/span>(SpringAopApplication<\/span>.class<\/span>, args<\/span>);<\/span>\r\n    }<\/span>\r\n}<\/span><\/pre>\n
\u65b9\u6cd52.2 \u4f7f\u7528ApplicationContextAware<\/span><\/h4>\n
\u901a\u8fc7spring\u751f\u547d\u5468\u671f\uff0c\u76f4\u63a5\u5c06ApplicationContext\u6ce8\u5165\u8fdb\u6765\uff1a<\/span><\/p>\n
public<\/span> class<\/span> A<\/span> implements<\/span> ApplicationContextAware<\/span> {<\/span>\r\nprivate<\/span> ApplicationContext<\/span> applicationContext<\/span>;<\/span>\r\n \u00a0 \u00a0<\/span>\r\n \u00a0 \u00a0@Override<\/span><\/span>\r\n \u00a0 \u00a0public<\/span> void<\/span> setApplicationContext<\/span>(ApplicationContext<\/span> applicationContext<\/span>) throws<\/span> BeansException<\/span> {<\/span>\r\n \u00a0 \u00a0 \u00a0 \u00a0this<\/span>.applicationContext<\/span> =<\/span> applicationContext<\/span>;<\/span>\r\n \u00a0  }<\/span>\r\n \u00a0 \u00a0<\/span>\r\n \u00a0 \u00a0<\/span>\r\n \u00a0 \u00a0public<\/span> void<\/span> serviceB<\/span>() {<\/span>\r\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0  ......<\/span>\r\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/\u6b64\u5904\u8c03\u7528\u7684\u5c31\u662f\u4ee3\u7406\u540e\u7684\u65b9\u6cd5<\/span><\/span>\r\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0applicationContext<\/span>.getBean<\/span>(A<\/span>.class<\/span>).serviceA<\/span>();<\/span>\r\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0  ......<\/span>\r\n \u00a0  }<\/span>\r\n}<\/span><\/pre>\n
\n
\n","protected":false},"excerpt":{"rendered":"
\u73b0\u8c61 \u793a\u4f8b\uff1a public class A { \u00a0 \u00a0\/\/…… \u00a0 \u00a0 \u00a0 \u00a0@Transaction […]<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"categories":[111,74],"tags":[110,37],"_links":{"self":[{"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=\/wp\/v2\/posts\/913"}],"collection":[{"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=913"}],"version-history":[{"count":1,"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=\/wp\/v2\/posts\/913\/revisions"}],"predecessor-version":[{"id":914,"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=\/wp\/v2\/posts\/913\/revisions\/914"}],"wp:attachment":[{"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=913"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=913"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=913"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}