{"id":68336,"date":"2026-01-30T01:41:37","date_gmt":"2026-01-29T17:41:37","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/68336.html"},"modified":"2026-01-30T01:41:37","modified_gmt":"2026-01-29T17:41:37","slug":"mybatis-plus%e5%bf%ab%e9%80%9f%e5%85%a5%e9%97%a8","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/68336.html","title":{"rendered":"Mybatis Plus\u5feb\u901f\u5165\u95e8"},"content":{"rendered":"

\u7b80\u4ecb<\/h4>\n

\u5b98\u7f51：https:\/\/baomidou.com\/<\/p>\n

MyBatis-Plus \u662f\u4e00\u4e2a MyBatis \u7684\u589e\u5f3a\u5de5\u5177，\u5728 MyBatis \u7684\u57fa\u7840\u4e0a\u53ea\u505a\u589e\u5f3a\u4e0d\u505a\u6539\u53d8，\u4e3a\u7b80\u5316\u5f00\u53d1\u3001\u63d0\u9ad8\u6548\u7387\u800c\u751f\u3002<\/p>\n

\u613f\u666f<\/p>\n

\u6211\u4eec\u7684\u613f\u666f\u662f\u6210\u4e3a MyBatis \u6700\u597d\u7684\u642d\u6863，\u5c31\u50cf \u9b42\u6597\u7f57 \u4e2d\u7684 1P\u30012P，\u57fa\u53cb\u642d\u914d，\u6548\u7387\u7ffb\u500d\u3002<\/p>\n

（\u7b80\u79f0 MP）\u662f\u4e00\u4e2aMybatis \u7684\u589e\u5f3a\u5de5\u5177，\u5728 MyBatis \u7684\u57fa\u7840\u4e0a\u53ea\u505a\u589e\u5f3a\u4e0d\u505a\u6539\u53d8，\u5b8c\u5168\u53bbSQL\u5316，\u5c01\u88c5\u597d\u4e86\u5927\u91cf\u7684CURD\u64cd\u4f5c\u3002 \u751a\u81f3\u628aCRUD\u64cd\u4f5c\u5c01\u88c5\u5230\u4e86Service\u5c42，\u53ef\u4ee5\u76f4\u63a5\u5728controller\u8c03\u7528\u73b0\u6210\u7684CRUD\u670d\u52a1\u5c42，\u6781\u5ea6\u8212\u9002\u7701\u5fc3\u3002<\/p>\n

\u5c40\u9650：\u53ea\u652f\u6301\u7b80\u5355\u7684CRUD \u64cd\u4f5c\u3002\u4e0d\u652f\u6301\u591a\u8868\u64cd\u4f5c（join ,union,\u5b50\u67e5\u8be2） \u3002<\/p>\n

\"\"<\/p>\n

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

\u5feb\u901f\u4e0a\u624b<\/h4>\n

1.\u5efa\u8868 \"\"<\/h4>\n<\/p>\n

DROP TABLE IF EXISTS `user`;<\/p>\n

CREATE TABLE `user`
\n(
\n id BIGINT NOT NULL COMMENT '\u4e3b\u952eID',
\n name VARCHAR(30) NULL DEFAULT NULL COMMENT '\u59d3\u540d',
\n age INT NULL DEFAULT NULL COMMENT '\u5e74\u9f84',
\n email VARCHAR(50) NULL DEFAULT NULL COMMENT '\u90ae\u7bb1',
\n PRIMARY KEY (id)
\n);<\/p>\n

select * from user;<\/p>\n

INSERT INTO `user` (id, name, age, email) VALUES
\n(1, 'Jone', 18, 'test1@baomidou.com'),
\n(2, 'Jack', 20, 'test2@baomidou.com'),
\n(3, 'Tom', 28, 'test3@baomidou.com'),
\n(4, 'Sandy', 21, 'test4@baomidou.com'),
\n(5, 'Billie', 24, 'test5@baomidou.com'); <\/p>\n

  • \u9879\u76ee\u4f9d\u8d56<\/li>\n

    <?xml version="1.0" encoding="UTF-8"?>
    \n<project xmlns="http:\/\/maven.apache.org\/POM\/4.0.0" xmlns:xsi="http:\/\/www.w3.org\/2001\/XMLSchema-instance"
    \n xsi:schemaLocation="http:\/\/maven.apache.org\/POM\/4.0.0 https:\/\/maven.apache.org\/xsd\/maven-4.0.0.xsd">
    \n <modelVersion>4.0.0<\/modelVersion>
    \n <!–<parent>
    \n <groupId>org.springframework.boot<\/groupId>
    \n <artifactId>spring-boot-starter-parent<\/artifactId>
    \n <version>3.5.9<\/version>
    \n <relativePath\/> &lt;!&ndash; lookup parent from repository &ndash;&gt;
    \n <\/parent>–>
    \n <groupId>com.bigdata<\/groupId>
    \n <artifactId>demo1<\/artifactId>
    \n <version>0.0.1-SNAPSHOT<\/version>
    \n <name>demo1<\/name>
    \n <description>demo1<\/description>
    \n <properties>
    \n <java.version>1.8<\/java.version>
    \n <spring-cloud-alibaba.version>2.2.2.RELEASE<\/spring-cloud-alibaba.version>
    \n <spring-cloud.version>Hoxton.SR8<\/spring-cloud.version>
    \n <mybatis-plus.version>3.5.5<\/mybatis-plus.version>
    \n <velocity.version>2.0<\/velocity.version>
    \n <swagger.version>2.9.2<\/swagger.version>
    \n <swagger-bootstrap-ui.version>1.9.2<\/swagger-bootstrap-ui.version>
    \n <commons-lang3.version>3.9<\/commons-lang3.version>
    \n <commons-fileupload.version>1.3.1<\/commons-fileupload.version>
    \n <commons-io.version>2.6<\/commons-io.version>
    \n <fastjson.version>1.2.28<\/fastjson.version>
    \n <gson.version>2.8.6<\/gson.version>
    \n <json.version>20170516<\/json.version>
    \n <jodatime.version>2.10.1<\/jodatime.version>
    \n <jwt.version>0.7.0<\/jwt.version>
    \n <httpclient.version>4.5.1<\/httpclient.version>
    \n <\/properties><\/p>\n

    <parent>
    \n <groupId>org.springframework.boot<\/groupId>
    \n <artifactId>spring-boot-starter-parent<\/artifactId>
    \n <version>2.3.4.RELEASE<\/version>
    \n <relativePath\/> <!– lookup parent from repository –>
    \n <\/parent><\/p>\n

    <dependencies>
    \n <dependency>
    \n <groupId>org.springframework.boot<\/groupId>
    \n <artifactId>spring-boot-starter-web<\/artifactId>
    \n <\/dependency>
    \n <dependency>
    \n <groupId>org.springframework.boot<\/groupId>
    \n <artifactId>spring-boot-starter-test<\/artifactId>
    \n <\/dependency>
    \n <!–mybatis-plus–>
    \n <dependency>
    \n <groupId>com.baomidou<\/groupId>
    \n <artifactId>mybatis-plus-boot-starter<\/artifactId>
    \n <version>${mybatis-plus.version}<\/version>
    \n <\/dependency>
    \n <!–mybatis-plus \u4ee3\u7801\u751f\u6210\u5668–>
    \n <dependency>
    \n <groupId>com.baomidou<\/groupId>
    \n <artifactId>mybatis-plus-generator<\/artifactId>
    \n <version>${mybatis-plus.version}<\/version>
    \n <\/dependency>
    \n <!– Mybatis Plus \u4ee3\u7801\u751f\u6210\u5668\u6a21\u677f\u5f15\u64ce, –>
    \n <dependency>
    \n <groupId>org.apache.velocity<\/groupId>
    \n <artifactId>velocity-engine-core<\/artifactId>
    \n <version>${velocity.version}<\/version>
    \n <\/dependency><\/p>\n

    <dependency>
    \n <groupId>org.projectlombok<\/groupId>
    \n <artifactId>lombok<\/artifactId>
    \n <\/dependency><\/p>\n

    <dependency>
    \n <groupId>mysql<\/groupId>
    \n <artifactId>mysql-connector-java<\/artifactId>
    \n <\/dependency><\/p>\n

    <dependency>
    \n <groupId>org.springframework.boot<\/groupId>
    \n <artifactId>spring-boot-starter-freemarker<\/artifactId>
    \n <\/dependency><\/p>\n

    <!– Spring Data Commons \u505a\u5206\u9875\u6709\u7528–>
    \n <dependency>
    \n <groupId>org.springframework.data<\/groupId>
    \n <artifactId>spring-data-commons<\/artifactId>
    \n <\/dependency><\/p>\n

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

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

  • application.yml<\/li>\n

    server:
    \n port: 8081<\/p>\n

    spring:
    \n profiles:
    \n active: dev
    \n application:
    \n name: mybatisplus-test
    \n datasource:
    \n driver-class-name: com.mysql.cj.jdbc.Driver
    \n url: jdbc:mysql:\/\/127.0.0.1:3306\/test?serverTimezone=GMT%2B8&characterEncoding=utf-8
    \n username: root
    \n password: 123456<\/p>\n

    # \u6253\u5370SQL
    \nmybatis-plus:
    \n configuration:
    \n log-impl: org.apache.ibatis.logging.stdout.StdOutImpl <\/p>\n

    \u6216\u8005\u5982\u4e0b\u6240\u793a：<\/p>\n

    spring.application.name=demo1
    \nserver.port=8081
    \nspring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
    \nspring.datasource.url=jdbc:mysql:\/\/127.0.0.1:3306\/mybatis?serverTimezone=GMT%2B8&characterEncoding=utf-8
    \nspring.datasource.username=root
    \nspring.datasource.password=root
    \nmybatis-plus.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl <\/p>\n

    \u4ee3\u7801\u751f\u6210\u5668<\/h4>\n

    \u867d\u7136mybatis-plus\u5df2\u7ecf\u8282\u7701\u4e86sql\u7f16\u5199\u7684\u5927\u90e8\u5206\u5de5\u4f5c，\u4f46\u662f\u5f53\u9762\u5bf9\u51e0\u5341\u4e0a\u767e\u4e2a\u8868\u7684\u6a21\u5757\u5904\u7406\u65f6，\u4ecd\u7136\u53c8\u5927\u91cf\u7684\u7c7b\u6a21\u5757\u8981\u7f16\u5199，\u5176\u4e2d\u6700\u5927\u7684\u5de5\u4f5c\u91cf\u5c31\u662f\u5b9e\u4f53\u7c7b\u7684\u7f16\u5199，\u5982\u679c\u624b\u5de5\u7f16\u5199\u8fd8\u5f88\u5bb9\u6613\u51fa\u9519\u3002<\/p>\n

    \u6240\u4ee5mybatis-plus\u8fd8\u63a8\u51fa\u4e86\u4ee3\u7801\u751f\u6210\u5de5\u5177\u3002<\/p>\n

    \u5728pom.xml\u4e2d\u589e\u52a0\u4ee3\u7801\u751f\u6210\u5de5\u5177\u3002<\/p>\n

    \u589e\u52a0\u4e00\u4e2a\u4ee3\u7801\u751f\u6210\u7684\u5de5\u5177\u7c7b<\/p>\n

    CREATE TABLE `student` (
    \n `id` int(0) NOT NULL AUTO_INCREMENT COMMENT 'ID',
    \n `name` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT '\u59d3\u540d',
    \n `age` int(0) NULL DEFAULT NULL COMMENT '\u5e74\u9f84',
    \n PRIMARY KEY (`id`) USING BTREE
    \n) ENGINE = InnoDB AUTO_INCREMENT = 1 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
    \nSET FOREIGN_KEY_CHECKS = 1;<\/p>\n

    select * from student;<\/p>\n

    INSERT INTO `student` (id, name, age) VALUES
    \n(1, '\u5f20\u4e09', 18),
    \n(2, '\u674e\u56db', 20); <\/p>\n

    EasyCode \u81ea\u52a8\u4ee3\u7801\u751f\u6210:<\/h4>\n

    \n

    \"\"<\/p>\n

    idea \u8fde\u63a5\u6570\u636e\u5e93：<\/p>\n

    \n

    \"\"<\/p>\n

    \u7b2c\u4e00\u6b21\u9700\u8981\u4e0b\u8f7d\u9a71\u52a8：<\/p>\n

    \n

    \"\"<\/p>\n

    \u70b9\u51fb\u9700\u8981\u751f\u6210\u4ee3\u7801\u7684\u8868：<\/p>\n

    \n

    \"\"<\/p>\n

    \n

    \"\"<\/p>\n

    \n

    \"\"<\/p>\n

    \n

    \"\"<\/p>\n

    \n

    \"\"<\/p>\n

    \u5982\u679c\u9700\u8981\u751f\u6210\u7b26\u5408\u81ea\u5df1\u9884\u671f\u7684\u4ee3\u7801，\u9700\u8981\u81ea\u5df1\u8bbe\u7f6e\u6a21\u7248\u3002<\/p>\n

    \n

    \"\"<\/p>\n

    \n

    \n

    \u63a5\u7740\u53ef\u4ee5\u62ff teacher \u8868\u7ec3\u7ec3\u624b：<\/p>\n

    CREATE TABLE `teacher` (
    \n `id` int(0) NOT NULL AUTO_INCREMENT COMMENT 'ID',
    \n `name` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT '\u59d3\u540d',
    \n `age` int(0) NULL DEFAULT NULL COMMENT '\u5e74\u9f84',
    \n PRIMARY KEY (`id`) USING BTREE
    \n) ENGINE = InnoDB AUTO_INCREMENT = 1 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
    \nSET FOREIGN_KEY_CHECKS = 1;<\/p>\n

    select * from teacher;<\/p>\n

    INSERT INTO `teacher` (id, name, age) VALUES
    \n(1, '\u5f20\u4e09', 18),
    \n(2, '\u674e\u56db', 20); <\/p>\n

    \u6761\u4ef6\u67e5\u8be2<\/h4>\n

    https:\/\/baomidou.com\/guides\/wrapper\/<\/p>\n

    \u666e\u901a Wrapper (QueryWrapper)：<\/p>\n

    QueryWrapper<User> queryWrapper = new QueryWrapper<>();
    \nqueryWrapper.eq("name", "\u8001\u738b"); <\/p>\n

    Lambda Wrapper (LambdaQueryWrapper)：<\/p>\n

    LambdaQueryWrapper<User> lambdaQueryWrapper = new LambdaQueryWrapper<>();
    \nlambdaQueryWrapper.eq(User::getName, "\u8001\u738b"); <\/p>\n

    \u751f\u6210\u7684 SQL<\/p>\n

    — \u666e\u901a Wrapper \u548c Lambda Wrapper \u751f\u6210\u7684 SQL \u76f8\u540c
    \nSELECT * FROM user WHERE name = '\u8001\u738b' <\/p>\n

    \u6d4b\u8bd5：\u67e5\u8be2\u59d3\u540d\u662f \u5f20\u5f00\u5934，\u5e74\u9f84\u572810\u523020\u4e4b\u95f4\u7684\u5b66\u751f\u4fe1\u606f<\/p>\n

    import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
    \nimport com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
    \nimport com.bigdata.ApplicationDemo;
    \nimport com.bigdata.mapper.UserMapper;
    \nimport com.bigdata.pojo.User;<\/p>\n

    import org.junit.jupiter.api.Test;
    \nimport org.springframework.beans.factory.annotation.Autowired;
    \nimport org.springframework.boot.test.context.SpringBootTest;<\/p>\n

    import java.util.List;<\/p>\n

    @SpringBootTest(classes = ApplicationDemo.class)
    \npublic class ApplicationTests {<\/p>\n

    @Autowired
    \n UserMapper userMapper;<\/p>\n

    @Test
    \n public void test1(){
    \n List<User> users = userMapper.selectList(null);
    \n for (User user : users) {
    \n System.out.println(user);
    \n }
    \n }<\/p>\n

    @Test
    \n public void test2(){<\/p>\n

    \/* QueryWrapper<User> queryWrapper = new QueryWrapper<>();
    \n queryWrapper.eq("name","\u8001\u738b");*\/<\/p>\n

    LambdaQueryWrapper<User> queryWrapper = new LambdaQueryWrapper<>();
    \n \/\/queryWrapper.eq(User::getName,"\u8001\u738b");
    \n queryWrapper.lt(User::getAge,28);
    \n queryWrapper.gt(User::getAge,18);<\/p>\n

    List<User> users = userMapper.selectList(queryWrapper);
    \n for (User user : users) {
    \n System.out.println(user);
    \n }
    \n }<\/p>\n

    }<\/p>\n

    \u5206\u9875\u67e5\u8be2<\/h4>\n

    https:\/\/baomidou.com\/guides\/data-interface\/#page<\/p>\n

    \u00a0\u72c2\u8de8<\/p>\n

    package com.demo.config;<\/p>\n

    import com.baomidou.mybatisplus.annotation.DbType;
    \nimport com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;
    \nimport com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
    \nimport org.springframework.context.annotation.Bean;
    \nimport org.springframework.context.annotation.Configuration;<\/p>\n

    @Configuration
    \npublic class MybatisPlusConfig {
    \n \/**
    \n * \u65b0\u589e\u5206\u9875\u62e6\u622a\u5668，\u5e76\u8bbe\u7f6e\u6570\u636e\u5e93\u7c7b\u578b\u4e3amysql
    \n *\/
    \n @Bean
    \n public MybatisPlusInterceptor mybatisPlusInterceptor() {
    \n MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
    \n interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
    \n return interceptor;
    \n }
    \n}<\/p>\n

    @Test
    \npublic void testPage(){
    \n IPage<Student> page = new Page<>(1,10);
    \n IPage<Student> studentIPage = studentService.page(page);
    \n List<Student> records = studentIPage.getRecords();
    \n \/\/ \u6570\u636e\u5e93\u4e2d\u603b\u7684\u5b66\u751f\u7684\u6570\u91cf
    \n long total = studentIPage.getTotal();
    \n System.out.println(total);
    \n \/\/ \u603b\u5171\u7684\u9875\u6570
    \n long pages = studentIPage.getPages();
    \n System.out.println(pages);
    \n \/\/ \u6bcf\u9875\u5c55\u793a\u591a\u5c11\u6761\u6570\u636e
    \n long size = studentIPage.getSize();
    \n System.out.println(size);<\/p>\n

    \/\/ \u5faa\u73af\u6253\u5370\u5f53\u524d\u9875\u7684\u6570\u636e
    \n for (Student student : records) {
    \n System.out.println(student);
    \n }
    \n} <\/p>\n

    \u6ce8\u610f\u5bfc\u5165\u7684 Page \u7684\u5305\u4e3a：<\/p>\n

    import com.baomidou.mybatisplus.core.metadata.IPage;
    \nimport com.baomidou.mybatisplus.extension.plugins.pagination.Page; <\/p>\n<\/p>\n

    \n

    \n","protected":false},"excerpt":{"rendered":"

    \u7b80\u4ecb
    \n\u5b98\u7f51：https:\/\/baomidou.com\/
    \nMyBatis-Plus \u662f\u4e00\u4e2a MyBatis \u7684\u589e\u5f3a\u5de5\u5177，\u5728 MyBatis \u7684\u57fa\u7840\u4e0a\u53ea\u505a\u589e\u5f3a\u4e0d\u505a\u6539\u53d8，\u4e3a\u7b80\u5316\u5f00\u53d1\u3001\u63d0\u9ad8\u6548\u7387\u800c\u751f\u3002
    \n\u613f\u666f
    \n\u6211\u4eec\u7684\u613f\u666f\u662f\u6210\u4e3a MyBatis \u6700\u597d\u7684\u642d\u6863，\u5c31\u50cf \u9b42\u6597\u7f57 \u4e2d\u7684 1P\u30012P，\u57fa\u53cb\u642d\u914d，\u6548\u7387\u7ffb\u500d\u3002
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