{"id":582,"date":"2021-04-17T11:58:20","date_gmt":"2021-04-17T03:58:20","guid":{"rendered":"https:\/\/fireinsect.top\/?p=582"},"modified":"2021-04-22T14:45:15","modified_gmt":"2021-04-22T06:45:15","slug":"spring%e5%85%a5%e9%97%a8","status":"publish","type":"post","link":"https:\/\/fireinsect.top\/index.php\/2021\/04\/17\/spring%e5%85%a5%e9%97%a8\/","title":{"rendered":"Spring\u5165\u95e8"},"content":{"rendered":"\n<p class=\"has-large-font-size\">Spring\u4f9d\u8d56\u6ce8\u5165<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Java\u6ce8\u89e3\uff08Annotation\uff09<\/p>\n\n\n\n<!--more-->\n\n\n\n<p>\u5728spring\u7684\u4f7f\u7528\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u4f7f\u7528Java\u6ce8\u89e3\u65b9\u6cd5\u5373\u5982 @Service \u6765\u5b8c\u6210<\/p>\n\n\n\n<p>Java\u6ce8\u89e3\u4e0d\u50cf\u666e\u901a\u7684\u6ce8\u91ca\uff0c\u5b83\u662f\u53ef\u4ee5\u5728\u7f16\u8bd1\u3001\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u88ab\u8bfb\u53d6\u7684\u3002<\/p>\n\n\n\n<p>\u5728Spring\u4e2dIoC\u662f\u6781\u5176\u91cd\u8981\u7684\u7ec4\u4ef6\uff0c\u5176\u63d0\u4f9b\u4f9d\u8d56\u6ce8\u5165\u6765\u5b8c\u6210\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"java\" class=\"language-java\">import org.springframework.context.annotation.AnnotationConfigApplicationContext;\n\nApplicationContext context = new AnnotationConfigApplicationContext(\"test.modo\");<\/code><\/pre>\n\n\n\n<p>\u4ee5\u6b64\u6765\u83b7\u53d6test.modo\u4e0b\u6240\u6709\u7684Bean<\/p>\n\n\n\n<p>\u800c\u6211\u4eec\u901a\u8fc7\u5728\u7c7b\u524d\u52a0\u4e0aBean\u6ce8\u89e3\uff0c\u5c31\u53ef\u4ee5\u6807\u8bb0Bean\u4ee5\u6b64\u6765\u901a\u8fc7IoC\u5b9e\u73b0\u7c7b<\/p>\n\n\n\n<p>Bean\u6ce8\u89e3\uff1a<\/p>\n\n\n\n<ul class=\"list1 wp-block-list\"><li><code>org.springframework.stereotype.Service<\/code><\/li><li><code>org.springframework.stereotype.Component<\/code><\/li><li><code>org.springframework.stereotype.Controller<\/code><\/li><li><code>org.springframework.stereotype.Repository<\/code><\/li><\/ul>\n\n\n\n<p><code>@Component<\/code> \u6ce8\u89e3\u662f\u901a\u7528\u7684 Bean \u6ce8\u89e3\uff0c\u5176\u4f59\u4e09\u4e2a\u6ce8\u89e3\u90fd\u662f\u6269\u5c55\u81ea <code>Component<\/code><br><code>@Service<\/code> \u6b63\u5982\u8fd9\u4e2a\u540d\u79f0\u4e00\u6837\uff0c\u4ee3\u8868\u7684\u662f Service Bean<br><code>@Controller<\/code>\u4f5c\u7528\u4e8e Web Bean<br><code>@Repository<\/code>\u4f5c\u7528\u4e8e\u6301\u4e45\u5316\u76f8\u5173 Bean<\/p>\n\n\n\n<p>\u5927\u81f4\u5982\u4e0b\uff08\u7701\u7565\u90e8\u5206\u4ee3\u7801\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"java\" class=\"language-java\"><strong>SongServiceImpl.java<\/strong>\npackage fm.douban.service.impl;\n import org.springframework.stereotype.Service;\n import fm.douban.service.SongService;\n import fm.douban.model.Song;\n import java.util.*;\n @Service\n public class SongServiceImpl implements SongService {\n private static Map songMap = new HashMap&lt;&gt;();\n static {\n       Song song = new Song();\n       song.setId(\"001\");\n       song.setSubjectId(\"s001\");\n       song.setLyrics(\"\u2026\");\n       song.setName(\"\u6210\u90fd\");\n       songMap.put(song.getId(), song);\n   }\n @Override\n   public Song get(String songId) {\n       return songMap.get(songId);\n   }\n }<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"java\" class=\"language-java\"><strong>Application.java<\/strong>\npackage fm.douban;\n import org.springframework.context.ApplicationContext;\n import org.springframework.context.annotation.AnnotationConfigApplicationContext;\n import fm.douban.service.SongService;\n import fm.douban.model.Song;\n \/**\n Application\n *\/\n public class Application {\n public static void main(String[] args) {\n ApplicationContext context = new AnnotationConfigApplicationContext(\"fm.douban\");    \n   SongService songService = context.getBean(SongService.class);    \n   Song song = songService.get(\"001\");    \n   System.out.println(\"\u5f97\u5230\u6b4c\u66f2\uff1a\"+song.getName());    \n }\n } <\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\">\u4f9d\u8d56\u6ce8\u51652<\/p>\n\n\n\n<p>\u524d\u9762\u7684\u6b65\u9aa4\uff0c\u6211\u4eec\u5b8c\u6210\u4e86IoC\u7684\u542f\u52a8\uff0c\u800c\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u624d\u662f\u771f\u6b63\u7684\u5b8c\u6210\u4f9d\u8d56\u6ce8\u5165<\/p>\n\n\n\n<p><strong>@Autowired<\/strong> \u6ce8\u89e3\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u76f4\u63a5\u4ece\u5916\u90e8<strong>import<\/strong>\u4f7f\u7528<strong>Bean<\/strong>\u65e0\u9700\u518d\u6b21\u5199\u660e<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"java\" class=\"language-java\"> package fm.douban.service.impl;\nimport fm.douban.model.Song;\nimport fm.douban.model.Subject;\nimport fm.douban.service.SongService;\nimport fm.douban.service.SubjectService;\nimport org.springframework.stereotype.Service;\nimport org.springframework.beans.factory.annotation.Autowired;\nimport java.util.HashMap;\nimport java.util.List;\nimport java.util.Map;\n @Service\npublic class SubjectServiceImpl implements SubjectService { \n@Autowired\nprivate SongService songService;\/\/\u8fd9\u91cc\u76f4\u63a5\u901a\u8fc7Autowired\u8c03\u7528\u4e86\u5185\u90e8\u7684Service\n\n\/\/\u7f13\u5b58\u6240\u6709\u4e13\u8f91\u6570\u636e\nprivate static Map&lt;String, Subject&gt; subjectMap = new HashMap&lt;&gt;();\nstatic {\n    Subject subject = new Subject();\n    subject.setId(\"s001\");\n    subjectMap.put(subject.getId(), subject);\n}\n\n@Override\npublic Subject get(String subjectId) {\n    Subject subject = subjectMap.get(subjectId);\n    \/\/\u8c03\u7528 SongService \u83b7\u53d6\u4e13\u8f91\u6b4c\u66f2\n    List&lt;Song&gt; songs = songService.list(subjectId);\n    subject.setSongs(songs);\n    return subject;\n}<\/code><\/pre>\n\n\n\n<p>}<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Spring\u4f9d\u8d56\u6ce8\u5165 Java\u6ce8\u89e3\uff08Annotation\uff09<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","footnotes":""},"categories":[6,1],"tags":[],"class_list":["post-582","post","type-post","status-publish","format-standard","hentry","category-6","category-wcd"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/posts\/582"}],"collection":[{"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/comments?post=582"}],"version-history":[{"count":4,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/posts\/582\/revisions"}],"predecessor-version":[{"id":624,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/posts\/582\/revisions\/624"}],"wp:attachment":[{"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/media?parent=582"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/categories?post=582"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/tags?post=582"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}