{"id":956,"date":"2021-09-14T16:49:21","date_gmt":"2021-09-14T08:49:21","guid":{"rendered":"https:\/\/fireinsect.top\/?p=956"},"modified":"2021-09-14T19:41:13","modified_gmt":"2021-09-14T11:41:13","slug":"spring-data-crud","status":"publish","type":"post","link":"https:\/\/fireinsect.top\/index.php\/2021\/09\/14\/spring-data-crud\/","title":{"rendered":"Spring Data CRUD\uff08MongoDB\uff09"},"content":{"rendered":"\n

\u5bf9\u6570\u636e\u5e93\u7684\u64cd\u4f5c\u4e00\u5b9a\u8981\u653e\u5728@Service<\/code> \u7c7b\u4e2d\uff0c\u800c\u4e0d\u662f\u653e\u5728 @Controller<\/code> \u7c7b\u4e2d\uff1b\u4e14 @Controller<\/code> \u7c7b\u53ef\u4ee5\u8c03\u7528 @Service<\/code> \u7c7b\u7684\u65b9\u6cd5\uff0c\u53cd\u4e4b\u5219\u4e0d\u884c\u3002\u8fd9\u662f SpringMVC<\/code>\u7684\u7ecf\u5178\u67b6\u6784\u7406\u8bba\u3002<\/p>\n\n\n\n\n\n\n\n

\u65b0\u589e\u6570\u636e<\/p>\n\n\n\n

 @Autowired<\/strong>\n  private<\/strong> MongoTemplate mongoTemplate;\n\n  public<\/strong> void<\/strong> test<\/strong>() {\n    Song song = new<\/strong> Song();\n    song.setSubjectId(\"s001\");\n    song.setLyrics(\"...\");\n    song.setName(\"\u6210\u90fd\");\n\n    mongoTemplate.insert(song);\n  }<\/code><\/pre>\n\n\n\n
\u5148\u81ea\u52a8\u6ce8\u5165 mongoTemplate \u518d\u901a\u8fc7.insert()<\/strong> \u65b9\u6cd5\u6765\u5b8c\u6210\u6570\u636e\u63d2\u5165<\/p>\n\n\n\n
<\/div>\n\n\n\n
\u67e5\u8be2\u6570\u636e<\/p>\n\n\n\n
\u4f7f\u7528\uff1a<\/p>\n\n\n\n
mongoTemplate.findById(songId, Song.class)<\/code><\/pre>\n\n\n\n
\u6765\u5bfb\u627e\u6570\u636e<\/p>\n\n\n\n
\u5176\u4e2dfindById()<\/code> \u65b9\u6cd5\u7b2c 1 \u4e2a\u53c2\u6570\u5c31\u662f\u4e3b\u952e id\uff0c\u7b2c 2 \u4e2a\u53c2\u6570\u662f\u5177\u4f53\u7684\u7c7b\uff0c\u5199\u6cd5\u662f \u7c7b\u540d.class<\/code><\/p>\n\n\n\n
<\/div>\n\n\n\n
\u4fee\u6539\u6570\u636e<\/p>\n\n\n\n
\/\/ \u4fee\u6539 id=1 \u7684\u6570\u636e<\/em>\nQuery query = new<\/strong> Query(Criteria.where(\"id\").is(\"1\"));\n\n\/\/ \u628a\u6b4c\u540d\u4fee\u6539\u4e3a \u201cnew name\u201d<\/em>\nUpdate updateData = new<\/strong> Update();\nupdateData.set(\"name\", \"new name\");\n\n\/\/ \u6267\u884c\u4fee\u6539\uff0c\u4fee\u6539\u8fd4\u56de\u7ed3\u679c\u7684\u662f\u4e00\u4e2a\u5bf9\u8c61<\/em>\nUpdateResult result = mongoTemplate.updateFirst(query, updateData, Song.class);\n\/\/ \u4fee\u6539\u7684\u8bb0\u5f55\u6570\u5927\u4e8e 0 \uff0c\u8868\u793a\u4fee\u6539\u6210\u529f<\/em>\nSystem.out.println(\"\u4fee\u6539\u7684\u6570\u636e\u8bb0\u5f55\u6570\u91cf\uff1a\" + result.getModifiedCount());<\/code><\/pre>\n\n\n\n
\u5148\u4f7f\u7528\u6761\u4ef6\u5bf9\u8c61Criteria<\/code> \u6784\u5efa\u6761\u4ef6\u5bf9\u8c61 Query<\/code> \u5b9e\u4f8b\uff0c\u7136\u540e\u5728\u8c03\u7528\u4fee\u6539\u5bf9\u8c61 Update<\/code> \u7684\u65b9\u6cd5 .set()<\/code><\/p>\n\n\n\n
\u6700\u540e\u8c03\u7528 mongoTemplate.updateFirst(query, updateData, Song.class)<\/code> \u65b9\u6cd5\u5b8c\u6210\u4fee\u6539<\/p>\n\n\n\n
<\/div>\n\n\n\n
\u5220\u9664\u6570\u636e<\/p>\n\n\n\n
Song song = new<\/strong> Song();\nsong.setId(songId);\n\n\/\/ \u6267\u884c\u5220\u9664<\/em>\nDeleteResult result = mongoTemplate.remove(song);\n\/\/ \u5220\u9664\u7684\u8bb0\u5f55\u6570\u5927\u4e8e 0 \uff0c\u8868\u793a\u5220\u9664\u6210\u529f<\/em>\nSystem.out.println(\"\u5220\u9664\u7684\u6570\u636e\u8bb0\u5f55\u6570\u91cf\uff1a\" + result.getDeletedCount());<\/code><\/pre>\n\n\n\n
\u8c03\u7528.remove()<\/strong> \u65b9\u6cd5\u6765\u5220\u9664\u6570\u636e<\/p>\n\n\n\n
<\/div>\n\n\n\n
\u591a\u6761\u4ef6\u67e5\u8be2<\/p>\n\n\n\n
\u5f53\u6211\u4eec\u67e5\u8be2\u65f6\uff0c\u5f80\u5f80\u4f1a\u67e5\u8be2\u5230\u591a\u6761\u6570\u636e\uff0c\u6240\u4ee5\u6211\u4eec\u4e00\u822c\u8fd4\u56de\u6570\u7ec4\uff1a<\/p>\n\n\n\n
List<Song> songs = mongoTemplate.find(query, Song.class);<\/code><\/pre>\n\n\n\n
\u67e5\u8be2\u65b9\u6cd5\u6bd4\u8f83\u7b80\u5355\uff0c\u4f46\u67e5\u8be2\u64cd\u4f5c\u7684\u590d\u6742\u6027\u5728\u4e8e\u6761\u4ef6\uff0c\u9700\u8981\u5148\u6784\u5efa\u597d Criteria <\/strong>\u6761\u4ef6\u5bf9\u8c61\u7684\u5b9e\u4f8b\uff0c\u6765\u6784\u5efa Query<\/strong> \u5b9e\u4f8b\uff1a<\/p>\n\n\n\n
Query query = new Query(criteria);<\/code><\/pre>\n\n\n\n
\u800c Criteria<\/strong> \u5bf9\u8c61\u4e00\u822c\u5b58\u5728\u4e24\u79cd\u60c5\u51b5\uff1a<\/p>\n\n\n\n
\u5355\u4e00\u6761\u4ef6\uff1aCriteria criteria1 = Criteria.where(\"\u6761\u4ef6\u5b57\u6bb5\u540d\").is(\"\u6761\u4ef6\u503c\")<\/code> \u5373\u53ef\u8fd4\u56de\u4e00\u4e2a\u6761\u4ef6\u5bf9\u8c61\u7684\u5b9e\u4f8b<\/p>\n\n\n\n
\u7ec4\u5408\u6761\u4ef6\uff1a\u66f4\u52a0\u6216(or)\u3001\u4e14(and) \u7684\u5173\u7cfb\u8fdb\u884c\u7ec4\u5408\uff0c\u591a\u4e2a\u5b50\u6761\u4ef6\u5bf9\u8c61\u7ec4\u5408\u6210\u4e00\u4e2a\u603b\u6761\u4ef6\u5bf9\u8c61\uff1a<\/p>\n\n\n\n
  • \u6216\u5173\u7cfb\uff1a<\/li><\/ul>\n\n\n\n
    Criteria criteria = new<\/strong> Criteria();<\/code><\/p>\n\n\n\n
     criteria.orOperator(criteria1, criteria2);<\/code><\/p>\n\n\n\n
    • \u4e14\u5173\u7cfb\uff1a<\/li><\/ul>\n\n\n\n
      Criteria criteria = new<\/strong> Criteria();<\/code><\/p>\n\n\n\n
       criteria.andOperator(criteria1, criteria2);<\/code><\/p>\n\n\n\n
      \u8fd9\u4e24\u4e2a\u65b9\u6cd5\u7684\u53c2\u6570\uff0c\u53ef\u4ee5\u8f93\u5165\u591a\u4e2a\u5b50\u6761\u4ef6\uff0c\u4e5f\u53ef\u4ee5\u8f93\u5165\u5b50\u6761\u4ef6\u6570\u7ec4<\/p>\n\n\n\n
      \u5f53\u7136\uff0c\u7ec4\u5408\u6761\u4ef6\u60c5\u51b5\u4e0b\uff0c\u4e5f\u53ef\u4ee5\u591a\u5c42\u7ec4\u5408 \u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
      \u5bf9\u6570\u636e\u5e93\u7684\u64cd\u4f5c\u4e00\u5b9a\u8981\u653e\u5728@Service \u7c7b\u4e2d\uff0c\u800c\u4e0d\u662f\u653e\u5728 @Controller&nbs […]<\/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],"tags":[],"class_list":["post-956","post","type-post","status-publish","format-standard","hentry","category-6"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/posts\/956"}],"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=956"}],"version-history":[{"count":5,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/posts\/956\/revisions"}],"predecessor-version":[{"id":963,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/posts\/956\/revisions\/963"}],"wp:attachment":[{"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/media?parent=956"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/categories?post=956"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/tags?post=956"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}