{"id":199,"date":"2024-11-14T15:23:14","date_gmt":"2024-11-14T07:23:14","guid":{"rendered":"https:\/\/blog.easitch.com\/?p=199"},"modified":"2026-04-28T17:05:18","modified_gmt":"2026-04-28T09:05:18","slug":"%e5%9c%a8-spring-%e4%b8%ad%e4%bd%bf%e7%94%a8%e7%ad%96%e7%95%a5%e6%a8%a1%e5%bc%8f%e9%81%87%e5%88%b0%e7%9a%84%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"https:\/\/blog.eastfond.com\/?p=199","title":{"rendered":"\u5728 Spring \u4e2d\u4f7f\u7528\u7b56\u7565\u6a21\u5f0f\uff08\u4e00\uff09"},"content":{"rendered":"

\u95ee\u9898\u51fa\u73b0<\/h1>\n

\u95ee\u9898\u63cf\u8ff0\uff1a\u5728Spring Boot\u73af\u5883\u4e0b\u4f7f\u7528\u7b56\u7565\u6a21\u5f0f\uff0c\u8c03\u7528 Spring \u7684 Bean \u51fa\u73b0\u4e86\u7a7a\u6307\u9488\u5f02\u5e38\u3002<\/p>\n

\/\/ \u8fd9\u662f\u4e00\u4e2a\u5f88\u7ecf\u5178\u7684\u7b56\u7565\u6a21\u5f0f\u5b9e\u73b0\uff0c\u4f46\u662f\u5982\u679c\u8fd9\u4e48\u4e9b\u5c31\u4e00\u5b9a\u4f1a\u51fa\u73b0\u4e0a\u9762\u6240\u8ff0BUG\n@Service\npublic class BussinessServiceImpl implements BussinessService {\n    private final Map<Integer, Strategy> strategyMap;\n\n    @Autowired\n    public BussinessServiceImpl() {\n        this.searchMap = new HashMap<>();\n        \/\/ \u6dfb\u52a0\u5177\u4f53\u7684\u7b56\u7565\u5b9e\u73b0\u7c7b\n        searchMap.put(1, new ConcreteStrategy1());\n        searchMap.put(2, new ConcreteStrategy2());\n    }\n\n    @Override\n    public void search(Integer type, DTO dto) {\n        Strategy strategy = strategyMap.get(type);\n        if (ObjUtil.isNull(strategy)) {\n            return;\n        }\n        strategy.options(dto);\n    }\n\n}<\/code><\/pre>\n
\/**\n * \u5728\u62bd\u8c61\u7b56\u7565\uff0c\u5c3d\u91cf\u4f7f\u7528\u62bd\u8c61\u7c7b\uff0c\u4e0d\u8981\u4f7f\u7528\u63a5\u53e3\uff0c\u539f\u56e0\u5728\u4e8e\uff0c\u6709\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u63d0\u53d6\u5230\u7236\u7c7b\u4e2d\u4f7f\u7528\n *\/\n@Component\npublic abstract class Strategy  {\n    @Resource\n    private BussinessMapper bussinessMapper; \/\/ \u8fd9\u91cc\u7684bussinessMapper\u4e00\u5b9a\u4e3a\u7a7a\n    \/\/ \u62bd\u8c61\u7684\u4e1a\u52a1\u65b9\u6cd5\n    public abstract void options(DTO dto);\n\n    \/\/ \u516c\u5171\u7684\u65b9\u6cd5\uff0c\u8fd9\u91cc\u5982\u679c\u662f\u63a5\u53e3\u5c31\u6ca1\u529e\u6cd5\u505a\u8fd9\u79cd\u5b9e\u73b0\u4e86\n    protected void commonMethod(){\n        bussinessMapper.do();\n    }\n\n}<\/code><\/pre>\n
\/**\n * \u5177\u4f53\u7b56\u7565\u5b9e\u73b0\u7c7b\n *\/\n@Component\npublic class ConcreteStrategy1 extends Strategy {\n    @Resource\n    private BussinessMapper bussinessMapper; \/\/ \u8fd9\u91cc\u7684bussinessMapper\u4e00\u5b9a\u4e3a\u7a7a\n\n    @Override\n    public void options(DTO dto) {\n       \/\/ do something\n        bussinessMapper.do();\n    }\n}<\/code><\/pre>\n
\u89e3\u51b3\u65b9\u6848<\/h1>\n
\u95ee\u9898\u539f\u56e0<\/div>
<\/p>\n
\u95ee\u9898\u5c31\u51fa\u73b0\u5728BussinessServiceImpl\u4e2d\uff0c\u5728\u6784\u9020\u65b9\u6cd5\u4e2d\u521b\u5efa\u4e86\u5177\u4f53\u7b56\u7565\u7684\u5b9e\u73b0\u7c7b\uff0c\u4f46\u662fnew\u7684\u7c7b\u5e76\u4e0d\u5728Spring\u7684Bean\u7ba1\u7406\u4e2d\uff0c\u56e0\u6b64\u8fd9\u4e9b\u7c7b\u4e2d\u8c03\u7528Spring\u7684Bean\u4e00\u5b9a\u4f1a\u51fa\u73b0\u7a7a\u6307\u9488\u5f02\u5e38\u3002<\/p>\n
<\/div><\/div>\n
\u65b9\u6848\u4e00\uff1a\u4f7f\u7528 @Autowired<\/code> \u6ce8\u5165 Strategy<\/code> \u7684\u5b9e\u73b0\u7c7b<\/h2>\n
@Service\n@Slf4j\npublic class BussinessServiceImpl implements BussinessService {\n    private final Map<Integer, Strategy> strategyMap;\n\n    @Autowired\n    public BussinessServiceImpl(ConcreteStrategy1 concreteStrategy1, ConcreteStrategy2 concreteStrategy2) {\n        this.strategyMap = new HashMap<>();\n        strategyMap.put(1, concreteStrategy1);\n        strategyMap.put(2, concreteStrategy2);\n    }\n}<\/code><\/pre>\n
\u65b9\u6848\u4e8c\uff1a\u4f7f\u7528 @PostConstruct<\/code> \u521d\u59cb\u5316 strategyMap<\/code><\/h2>\n
@Service\n@Slf4j\npublic class BussinessServiceImpl implements BussinessService {\n    private final Map<Integer, Strategy> strategyMap;\n\n    @Autowired\n    private ConcreteStrategy1 concreteStrategy1;\n\n    @Autowired\n    private ConcreteStrategy2 concreteStrategy2;\n\n    @Autowired\n    public BussinessServiceImpl() {\n        this.strategyMap = new HashMap<>();\n    }\n\n    @PostConstruct\n    public void init() {\n        strategyMap.put(1, concreteStrategy1);\n        strategyMap.put(2, concreteStrategy2);\n    }    \n}<\/code><\/pre>\n
\u65b9\u6848\u4e09\uff1a\u4f7f\u7528 @Component<\/code> \u548c @Qualifier<\/code><\/h2>\n
@Service\n@Slf4j\npublic class BussinessServiceImpl implements BussinessService {\n    private final Map<Integer, Strategy> strategyMap;\n\n    @Autowired\n    public BussinessServiceImpl(@Qualifier("concreteStrategy1") ConcreteStrategy1 concreteStrategy1,\n                                @Qualifier("concreteStrategy2") ConcreteStrategy2 concreteStrategy2) {\n        this.strategyMap = new HashMap<>();\n        strategyMap.put(1, concreteStrategy1);\n        strategyMap.put(2, concreteStrategy2);\n    }\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u95ee\u9898\u51fa\u73b0 \u95ee\u9898\u63cf\u8ff0\uff1a\u5728Spring Boot\u73af\u5883\u4e0b\u4f7f\u7528\u7b56\u7565\u6a21\u5f0f\uff0c\u8c03\u7528 Spring \u7684 Bean \u51fa\u73b0\u4e86\u7a7a\u6307\u9488 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24,4],"tags":[],"class_list":["post-199","post","type-post","status-publish","format-standard","hentry","category-java","category-posts"],"_links":{"self":[{"href":"https:\/\/blog.eastfond.com\/index.php?rest_route=\/wp\/v2\/posts\/199","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.eastfond.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.eastfond.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.eastfond.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.eastfond.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=199"}],"version-history":[{"count":4,"href":"https:\/\/blog.eastfond.com\/index.php?rest_route=\/wp\/v2\/posts\/199\/revisions"}],"predecessor-version":[{"id":255,"href":"https:\/\/blog.eastfond.com\/index.php?rest_route=\/wp\/v2\/posts\/199\/revisions\/255"}],"wp:attachment":[{"href":"https:\/\/blog.eastfond.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=199"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.eastfond.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=199"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.eastfond.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}