{"id":3695,"date":"2022-08-15T10:06:02","date_gmt":"2022-08-15T02:06:02","guid":{"rendered":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=3695"},"modified":"2022-08-15T10:06:02","modified_gmt":"2022-08-15T02:06:02","slug":"mybatis-%e6%b5%81%e5%bc%8f%e8%af%bb%e5%8f%96%e5%a4%a7%e9%87%8fmysql%e6%95%b0%e6%8d%ae","status":"publish","type":"post","link":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=3695","title":{"rendered":"MyBatis \u6d41\u5f0f\u8bfb\u53d6\u5927\u91cfMySQL\u6570\u636e"},"content":{"rendered":"\n

\u539f\u6587\uff1ahttps:\/\/mp.weixin.qq.com\/s\/3wZDhmM21wBAXWKmNZZUKA<\/a><\/p>\n\n\n\n

JDBC\u4e09\u79cd\u8bfb\u53d6\u65b9\u5f0f\uff1a<\/h4>\n\n\n\n

1\u3001<\/strong>\u00a0\u4e00\u6b21\u5168\u90e8\uff08\u9ed8\u8ba4\uff09\uff1a\u4e00\u6b21\u83b7\u53d6\u5168\u90e8\uff1b
2\u3001<\/strong>\u00a0\u6d41\u5f0f\uff1a\u591a\u6b21\u83b7\u53d6\uff0c\u4e00\u6b21\u4e00\u884c\uff1b
3\u3001<\/strong>\u00a0\u6e38\u6807\uff1a\u591a\u6b21\u83b7\u53d6\uff0c\u4e00\u6b21\u591a\u884c\uff1b<\/p>\n\n\n\n

mybatis\u9ed8\u8ba4\u91c7\u53d6\u7b2c\u4e00\u79cd\u3002<\/p>\n\n\n\n

\u5b9e\u73b0\u6b65\u9aa4\uff1a<\/h2>\n\n\n\n

\u8fd9\u91cc\u91c7\u7528\u7684 controller\u3001service\u3001dao\u5206\u5c42\u5f00\u53d1<\/p>\n\n\n\n

  • \u5728service\u5c42\u8c03\u7528dao\u63a5\u53e3\u662f\uff0c\u589e\u52a0\u4e00\u4e2a\u56de\u8c03\u53c2\u6570 ResultHandler<><\/code>\u3002<\/li>
  • \u5bf9\u5e94\u7684dao\u63a5\u53e3\u8fd4\u56de\u503c\u4e3avoid<\/li>
  • mapper \u586b\u5199 parameterType\u3001resultMap\u3001 resultSetType=\u201cFORWARD_ONLY\u201d\u3001 fetchSize=”-2147483648″<\/li><\/ul>\n\n\n\n

    \u4e3a\u4ec0\u4e48dao\u8fd4\u56de\u503c\u4e3avoid\u8fd8\u8981\u5728mapper\u5199resultMap?\u56e0\u4e3a\u56de\u8c03\u8981\u7528\u4f60\u7684resultMap\u5904\u7406\uff0c\u4f46\u662f\u4e0d\u5e94\u8be5\u8fd4\u56de\u7ed9service\uff0c\u56e0\u4e3a\u56de\u8c03\u5904\u7406\u597d\u4e86<\/p>\n\n\n\n

    <\/p>\n\n\n\n

    service\u5c42\uff08\u91cd\u70b9\uff09<\/p>\n\n\n\n

    public<\/strong>\u00a0List<Bo>\u00a0selectForwardOnly<\/strong>(Vo\u00a0vo,\u00a0Order\u00a0order)\u00a0{
    \u00a0\u00a0\u00a0\u00a0\u00a0final<\/strong>\u00a0List<Bo>\u00a0list\u00a0=\u00a0new<\/strong>\u00a0ArrayList<>();
    \u00a0\u00a0\u00a0\u00a0mapper.selectForwardOnly(vo,\u00a0order,\u00a0new<\/strong>\u00a0ResultHandler<Bo>()\u00a0{
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0@Override
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0public<\/strong>\u00a0void<\/strong>\u00a0handleResult<\/strong>(ResultContext<?\u00a0extends\u00a0Bo>\u00a0resultContext)\u00a0{
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/**\u56de\u8c03\u5904\u7406\u903b\u8f91\u00a0*\/
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0list.add(resultContext.getResultObject());
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}
    \u00a0\u00a0});
    \u00a0\u00a0\u00a0\u00a0return<\/strong>\u00a0list;
    \u00a0\u00a0}<\/p>\n\n\n\n

    dao\u5c42\uff1a(\u91cd\u70b9)<\/p>\n\n\n\n

    \u00a0\u00a0\/**\n\u00a0\u00a0\u00a0*\u00a0\u6d41\u5f0f\u8bfb\u53d6\u6570\u636e\n\u00a0\u00a0\u00a0*\u00a0@param<\/strong>\u00a0vo\u00a0\u67e5\u8be2\u5bf9\u8c61\n\u00a0\u00a0\u00a0*\u00a0@param<\/strong>\u00a0order\u00a0\u6392\u5e8f\n\u00a0\u00a0\u00a0*\u00a0@param<\/strong>\u00a0ossVipCustomerBoResultHandler\u00a0\u56de\u8c03\u5904\u7406\n\u00a0\u00a0\u00a0*\/\n\u00a0\u00a0void<\/strong>\u00a0selectForwardOnly<\/strong>(@Param(\"record\")\u00a0Vo\u00a0vo,\u00a0@Param<\/strong>(\"order\")\u00a0Order\u00a0order,\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ResultHandler<Bo>\u00a0handler);\n\nmapper:(\u91cd\u70b9)<\/code><\/pre>\n\n\n\n
    \"\"<\/figure>\n\n\n\n
    \u56de\u5934\u6709\u9700\u6c42\u53ef\u4ee5\u5c1d\u8bd5\u4e0b\uff0c\u4e3b\u8981\u662f\u5904\u7406\u964d\u4f4e\u670d\u52a1\u538b\u529b\uff0c\u51cf\u5c11gc<\/p>\n\n\n\n
    <\/p>\n","protected":false},"excerpt":{"rendered":"
    \u539f\u6587\uff1ahttps:\/\/mp.weixin.qq.com\/s\/3wZDhmM21wBAXWKmNZZUKA JD […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,12],"tags":[233,62,232],"_links":{"self":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3695"}],"collection":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3695"}],"version-history":[{"count":14,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3695\/revisions"}],"predecessor-version":[{"id":3710,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3695\/revisions\/3710"}],"wp:attachment":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3695"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3695"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3695"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}