├── .gitignore ├── LICENSE ├── README.md └── mp ├── .gitignore ├── .mvn └── wrapper │ ├── MavenWrapperDownloader.java │ ├── maven-wrapper.jar │ └── maven-wrapper.properties ├── pom.xml └── src ├── main ├── java │ └── com │ │ └── lord │ │ └── mp │ │ ├── MpApplication.java │ │ ├── config │ │ └── MyBatisPlusConfig.java │ │ ├── dao │ │ └── UserMapper.java │ │ ├── entity │ │ └── User.java │ │ └── service │ │ ├── UserService.java │ │ └── impl │ │ └── UserServiceImpl.java └── resources │ ├── application.yml │ ├── mapper │ └── UserMapper.xml │ ├── mybatis-config.xml │ └── sql │ └── 数据库脚本.sql └── test └── java └── com └── lord └── mp ├── MpApplicationTests.java └── user ├── ARTest.java ├── SimpleTest.java ├── UserServiceTest.java └── UserTest.java /.gitignore: -------------------------------------------------------------------------------- 1 | # Compiled class file 2 | *.class 3 | 4 | # Log file 5 | *.log 6 | 7 | # BlueJ files 8 | *.ctxt 9 | 10 | # Mobile Tools for Java (J2ME) 11 | .mtj.tmp/ 12 | 13 | # Package Files # 14 | *.jar 15 | *.war 16 | *.nar 17 | *.ear 18 | *.zip 19 | *.tar.gz 20 | *.rar 21 | 22 | # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml 23 | hs_err_pid* 24 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright [yyyy] [name of copyright owner] 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # imooc_mp 2 | 慕课网《MyBatis-Plus入门》课程源码 3 | -------------------------------------------------------------------------------- /mp/.gitignore: -------------------------------------------------------------------------------- 1 | HELP.md 2 | /target/ 3 | !.mvn/wrapper/maven-wrapper.jar 4 | 5 | ### STS ### 6 | .apt_generated 7 | .classpath 8 | .factorypath 9 | .project 10 | .settings 11 | .springBeans 12 | .sts4-cache 13 | 14 | ### IntelliJ IDEA ### 15 | .idea 16 | *.iws 17 | *.iml 18 | *.ipr 19 | 20 | ### NetBeans ### 21 | /nbproject/private/ 22 | /nbbuild/ 23 | /dist/ 24 | /nbdist/ 25 | /.nb-gradle/ 26 | /build/ 27 | 28 | ### VS Code ### 29 | .vscode/ 30 | -------------------------------------------------------------------------------- /mp/.mvn/wrapper/MavenWrapperDownloader.java: -------------------------------------------------------------------------------- 1 | /* 2 | Licensed to the Apache Software Foundation (ASF) under one 3 | or more contributor license agreements. See the NOTICE file 4 | distributed with this work for additional information 5 | regarding copyright ownership. The ASF licenses this file 6 | to you under the Apache License, Version 2.0 (the 7 | "License"); you may not use this file except in compliance 8 | with the License. You may obtain a copy of the License at 9 | 10 | https://www.apache.org/licenses/LICENSE-2.0 11 | 12 | Unless required by applicable law or agreed to in writing, 13 | software distributed under the License is distributed on an 14 | "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 | KIND, either express or implied. See the License for the 16 | specific language governing permissions and limitations 17 | under the License. 18 | */ 19 | 20 | import java.io.File; 21 | import java.io.FileInputStream; 22 | import java.io.FileOutputStream; 23 | import java.io.IOException; 24 | import java.net.URL; 25 | import java.nio.channels.Channels; 26 | import java.nio.channels.ReadableByteChannel; 27 | import java.util.Properties; 28 | 29 | public class MavenWrapperDownloader { 30 | 31 | /** 32 | * Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided. 33 | */ 34 | private static final String DEFAULT_DOWNLOAD_URL = 35 | "https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.4.2/maven-wrapper-0.4.2.jar"; 36 | 37 | /** 38 | * Path to the maven-wrapper.properties file, which might contain a downloadUrl property to 39 | * use instead of the default one. 40 | */ 41 | private static final String MAVEN_WRAPPER_PROPERTIES_PATH = 42 | ".mvn/wrapper/maven-wrapper.properties"; 43 | 44 | /** 45 | * Path where the maven-wrapper.jar will be saved to. 46 | */ 47 | private static final String MAVEN_WRAPPER_JAR_PATH = 48 | ".mvn/wrapper/maven-wrapper.jar"; 49 | 50 | /** 51 | * Name of the property which should be used to override the default download url for the wrapper. 52 | */ 53 | private static final String PROPERTY_NAME_WRAPPER_URL = "wrapperUrl"; 54 | 55 | public static void main(String args[]) { 56 | System.out.println("- Downloader started"); 57 | File baseDirectory = new File(args[0]); 58 | System.out.println("- Using base directory: " + baseDirectory.getAbsolutePath()); 59 | 60 | // If the maven-wrapper.properties exists, read it and check if it contains a custom 61 | // wrapperUrl parameter. 62 | File mavenWrapperPropertyFile = new File(baseDirectory, MAVEN_WRAPPER_PROPERTIES_PATH); 63 | String url = DEFAULT_DOWNLOAD_URL; 64 | if(mavenWrapperPropertyFile.exists()) { 65 | FileInputStream mavenWrapperPropertyFileInputStream = null; 66 | try { 67 | mavenWrapperPropertyFileInputStream = new FileInputStream(mavenWrapperPropertyFile); 68 | Properties mavenWrapperProperties = new Properties(); 69 | mavenWrapperProperties.load(mavenWrapperPropertyFileInputStream); 70 | url = mavenWrapperProperties.getProperty(PROPERTY_NAME_WRAPPER_URL, url); 71 | } catch (IOException e) { 72 | System.out.println("- ERROR loading '" + MAVEN_WRAPPER_PROPERTIES_PATH + "'"); 73 | } finally { 74 | try { 75 | if(mavenWrapperPropertyFileInputStream != null) { 76 | mavenWrapperPropertyFileInputStream.close(); 77 | } 78 | } catch (IOException e) { 79 | // Ignore ... 80 | } 81 | } 82 | } 83 | System.out.println("- Downloading from: : " + url); 84 | 85 | File outputFile = new File(baseDirectory.getAbsolutePath(), MAVEN_WRAPPER_JAR_PATH); 86 | if(!outputFile.getParentFile().exists()) { 87 | if(!outputFile.getParentFile().mkdirs()) { 88 | System.out.println( 89 | "- ERROR creating output direcrory '" + outputFile.getParentFile().getAbsolutePath() + "'"); 90 | } 91 | } 92 | System.out.println("- Downloading to: " + outputFile.getAbsolutePath()); 93 | try { 94 | downloadFileFromURL(url, outputFile); 95 | System.out.println("Done"); 96 | System.exit(0); 97 | } catch (Throwable e) { 98 | System.out.println("- Error downloading"); 99 | e.printStackTrace(); 100 | System.exit(1); 101 | } 102 | } 103 | 104 | private static void downloadFileFromURL(String urlString, File destination) throws Exception { 105 | URL website = new URL(urlString); 106 | ReadableByteChannel rbc; 107 | rbc = Channels.newChannel(website.openStream()); 108 | FileOutputStream fos = new FileOutputStream(destination); 109 | fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE); 110 | fos.close(); 111 | rbc.close(); 112 | } 113 | 114 | } 115 | -------------------------------------------------------------------------------- /mp/.mvn/wrapper/maven-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/wangshicon/imooc_mp/27f0801e64c722577143545c35a12d680c1d31cc/mp/.mvn/wrapper/maven-wrapper.jar -------------------------------------------------------------------------------- /mp/.mvn/wrapper/maven-wrapper.properties: -------------------------------------------------------------------------------- 1 | distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.6.0/apache-maven-3.6.0-bin.zip 2 | -------------------------------------------------------------------------------- /mp/pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 4.0.0 5 | 6 | com.lord 7 | mp 8 | 0.0.1-SNAPSHOT 9 | jar 10 | 11 | MP 12 | MP project for Spring Boot 13 | 14 | 15 | org.springframework.boot 16 | spring-boot-starter-parent 17 | 2.1.4.RELEASE 18 | 19 | 20 | 21 | 22 | UTF-8 23 | UTF-8 24 | 1.8 25 | 26 | 27 | 28 | 29 | org.springframework.boot 30 | spring-boot-starter 31 | 32 | 33 | 34 | org.springframework.boot 35 | spring-boot-starter-test 36 | test 37 | 38 | 39 | 40 | org.projectlombok 41 | lombok 42 | true 43 | 44 | 45 | 46 | com.baomidou 47 | mybatis-plus-boot-starter 48 | 3.1.1 49 | 50 | 51 | 52 | mysql 53 | mysql-connector-java 54 | runtime 55 | 56 | 57 | 58 | 59 | 60 | 61 | org.springframework.boot 62 | spring-boot-maven-plugin 63 | 64 | 65 | 66 | 67 | 68 | -------------------------------------------------------------------------------- /mp/src/main/java/com/lord/mp/MpApplication.java: -------------------------------------------------------------------------------- 1 | package com.lord.mp; 2 | 3 | import org.mybatis.spring.annotation.MapperScan; 4 | import org.springframework.boot.SpringApplication; 5 | import org.springframework.boot.autoconfigure.SpringBootApplication; 6 | 7 | @SpringBootApplication 8 | @MapperScan("com.lord.mp.dao") 9 | public class MpApplication { 10 | 11 | public static void main(String[] args) { 12 | SpringApplication.run(MpApplication.class, args); 13 | } 14 | 15 | } 16 | -------------------------------------------------------------------------------- /mp/src/main/java/com/lord/mp/config/MyBatisPlusConfig.java: -------------------------------------------------------------------------------- 1 | package com.lord.mp.config; 2 | 3 | import org.springframework.context.annotation.Bean; 4 | import org.springframework.context.annotation.Configuration; 5 | 6 | import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor; 7 | 8 | @Configuration 9 | public class MyBatisPlusConfig { 10 | 11 | @Bean 12 | public PaginationInterceptor paginationInterceptor() { 13 | return new PaginationInterceptor(); 14 | } 15 | 16 | } 17 | -------------------------------------------------------------------------------- /mp/src/main/java/com/lord/mp/dao/UserMapper.java: -------------------------------------------------------------------------------- 1 | package com.lord.mp.dao; 2 | 3 | import java.util.List; 4 | 5 | import org.apache.ibatis.annotations.Param; 6 | import org.springframework.stereotype.Repository; 7 | 8 | import com.baomidou.mybatisplus.core.conditions.Wrapper; 9 | import com.baomidou.mybatisplus.core.mapper.BaseMapper; 10 | import com.baomidou.mybatisplus.core.metadata.IPage; 11 | import com.baomidou.mybatisplus.core.toolkit.Constants; 12 | import com.baomidou.mybatisplus.extension.plugins.pagination.Page; 13 | import com.lord.mp.entity.User; 14 | 15 | /** 16 | * @Description: 用户信息持久层 17 | * @author Lord 18 | * @date 2019年5月30日 19 | */ 20 | @Repository 21 | public interface UserMapper extends BaseMapper { 22 | 23 | // @Select("select * from user ${ew.customSqlSegment}") 24 | List selectAll(@Param(Constants.WRAPPER) Wrapper wrapper); 25 | 26 | IPage selectUserPage(Page page, @Param(Constants.WRAPPER) Wrapper wrapper); 27 | 28 | } 29 | -------------------------------------------------------------------------------- /mp/src/main/java/com/lord/mp/entity/User.java: -------------------------------------------------------------------------------- 1 | package com.lord.mp.entity; 2 | 3 | import java.util.Date; 4 | 5 | import com.baomidou.mybatisplus.annotation.IdType; 6 | import com.baomidou.mybatisplus.annotation.SqlCondition; 7 | import com.baomidou.mybatisplus.annotation.TableField; 8 | import com.baomidou.mybatisplus.annotation.TableId; 9 | import com.baomidou.mybatisplus.annotation.TableName; 10 | import com.baomidou.mybatisplus.extension.activerecord.Model; 11 | 12 | import lombok.Data; 13 | import lombok.EqualsAndHashCode; 14 | 15 | /** 16 | * @Description: 用户信息表的对应实体 17 | * @author Lord 18 | * @date 2019年5月30日 19 | */ 20 | @Data 21 | @EqualsAndHashCode(callSuper = false) 22 | @TableName("user") 23 | public class User extends Model { 24 | 25 | private static final long serialVersionUID = 2603890837103787306L; 26 | 27 | /** 28 | * 主键 29 | */ 30 | @TableId(type = IdType.AUTO) 31 | private Long id; 32 | 33 | /** 34 | * 姓名 35 | */ 36 | @TableField(value = "name", condition = SqlCondition.LIKE) 37 | private String name; 38 | 39 | /** 40 | * 年龄 41 | */ 42 | @TableField(condition = "%s<#{%s}") 43 | private Integer age; 44 | 45 | /** 46 | * 邮箱 47 | */ 48 | private String email; 49 | 50 | /** 51 | * 直属上级id 52 | */ 53 | private Long managerId; 54 | 55 | /** 56 | * 创建时间 57 | */ 58 | private Date createTime; 59 | 60 | /* 61 | * 备注（不与数据库字段对应） # transient 不参与序列化 62 | */ 63 | @TableField(exist = false) 64 | private String remark; 65 | 66 | } 67 | -------------------------------------------------------------------------------- /mp/src/main/java/com/lord/mp/service/UserService.java: -------------------------------------------------------------------------------- 1 | package com.lord.mp.service; 2 | 3 | import com.baomidou.mybatisplus.extension.service.IService; 4 | import com.lord.mp.entity.User; 5 | 6 | public interface UserService extends IService { 7 | 8 | } 9 | -------------------------------------------------------------------------------- /mp/src/main/java/com/lord/mp/service/impl/UserServiceImpl.java: -------------------------------------------------------------------------------- 1 | package com.lord.mp.service.impl; 2 | 3 | import org.springframework.stereotype.Service; 4 | 5 | import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl; 6 | import com.lord.mp.dao.UserMapper; 7 | import com.lord.mp.entity.User; 8 | import com.lord.mp.service.UserService; 9 | 10 | @Service 11 | public class UserServiceImpl extends ServiceImpl implements UserService { 12 | 13 | } 14 | -------------------------------------------------------------------------------- /mp/src/main/resources/application.yml: -------------------------------------------------------------------------------- 1 | spring: 2 | datasource: 3 | driver-class-name: com.mysql.cj.jdbc.Driver 4 | url: jdbc:mysql://127.0.0.1:3306/mp?useSSL=false&serverTimezone=GMT%2B8 5 | username: root 6 | password: root 7 | 8 | mybatis-plus: 9 | # config-location: classpath:mybatis-config.xml 10 | mapper-locations: classpath:mapper/**/*Mapper.xml #指定mapper.xml的位置 11 | type-aliases-package: com.lord.mp.entity 12 | global-config: 13 | db-config: 14 | id-type: uuid 15 | 16 | logging: 17 | level: 18 | root: warn 19 | com.lord.mp.dao: trace 20 | pattern: 21 | console: '%p%m%n' #p:级别 m:内容 n:换行 -------------------------------------------------------------------------------- /mp/src/main/resources/mapper/UserMapper.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | id, `name`, age, email, manager_id, create_time 14 | 15 | 16 | 22 | 23 | 29 | 30 | -------------------------------------------------------------------------------- /mp/src/main/resources/mybatis-config.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 35 | 36 | -------------------------------------------------------------------------------- /mp/src/main/resources/sql/数据库脚本.sql: -------------------------------------------------------------------------------- 1 | #创建用户表 2 | CREATE TABLE user ( 3 | id BIGINT(20) PRIMARY KEY NOT NULL COMMENT '主键', 4 | name VARCHAR(30) DEFAULT NULL COMMENT '姓名', 5 | age INT(11) DEFAULT NULL COMMENT '年龄', 6 | email VARCHAR(50) DEFAULT NULL COMMENT '邮箱', 7 | manager_id BIGINT(20) DEFAULT NULL COMMENT '直属上级id', 8 | create_time DATETIME DEFAULT NULL COMMENT '创建时间', 9 | CONSTRAINT manager_fk FOREIGN KEY (manager_id) 10 | REFERENCES user (id) 11 | ) ENGINE=INNODB CHARSET=UTF8; 12 | 13 | #初始化数据： 14 | INSERT INTO user (id, name, age, email, manager_id 15 | , create_time) 16 | VALUES (1087982257332887553, '大boss', 40, 'boss@baomidou.com', NULL 17 | , '2019-01-11 14:20:20'), 18 | (1088248166370832385, '王天风', 25, 'wtf@baomidou.com', 1087982257332887553 19 | , '2019-02-05 11:12:22'), 20 | (1088250446457389058, '李艺伟', 28, 'lyw@baomidou.com', 1088248166370832385 21 | , '2019-02-14 08:31:16'), 22 | (1094590409767661570, '张雨琪', 31, 'zjq@baomidou.com', 1088248166370832385 23 | , '2019-01-14 09:15:15'), 24 | (1094592041087729666, '刘红雨', 32, 'lhm@baomidou.com', 1088248166370832385 25 | , '2019-01-14 09:48:16'); 26 | 27 | #修改主键为自增： 28 | alter table user change column id id bigint(20) auto_increment; 29 | -------------------------------------------------------------------------------- /mp/src/test/java/com/lord/mp/MpApplicationTests.java: -------------------------------------------------------------------------------- 1 | package com.lord.mp; 2 | 3 | import org.junit.Test; 4 | import org.junit.runner.RunWith; 5 | import org.springframework.boot.test.context.SpringBootTest; 6 | import org.springframework.test.context.junit4.SpringRunner; 7 | 8 | @RunWith(SpringRunner.class) 9 | @SpringBootTest 10 | public class MpApplicationTests { 11 | 12 | @Test 13 | public void contextLoads() { 14 | } 15 | 16 | } 17 | -------------------------------------------------------------------------------- /mp/src/test/java/com/lord/mp/user/ARTest.java: -------------------------------------------------------------------------------- 1 | package com.lord.mp.user; 2 | 3 | import java.util.Date; 4 | 5 | import org.junit.Test; 6 | 7 | import com.lord.mp.MpApplicationTests; 8 | import com.lord.mp.entity.User; 9 | 10 | public class ARTest extends MpApplicationTests { 11 | 12 | @Test 13 | public void insert() { 14 | User user = new User(); 15 | user.setName("丁茂义"); 16 | user.setAge(40); 17 | user.setEmail("dmy@baomidou.com"); 18 | user.setManagerId(1088248166370832385L); 19 | user.setCreateTime(new Date()); 20 | boolean flag = user.insert(); 21 | System.out.println("是否成功：" + flag); 22 | } 23 | 24 | @Test 25 | public void selectById1() { 26 | User user = new User(); 27 | User userSelect = user.selectById(1134351388596264961L); 28 | System.out.println(userSelect == user); 29 | System.out.println(userSelect); 30 | } 31 | 32 | @Test 33 | public void selectById2() { 34 | User user = new User(); 35 | user.setId(1134351388596264961L); 36 | User userSelect = user.selectById(); 37 | System.out.println(userSelect == user); 38 | System.out.println(userSelect); 39 | } 40 | 41 | @Test 42 | public void updateById() { 43 | User user = new User(); 44 | user.setId(1134351388596264961L); 45 | user.setName("张无忌@@@"); 46 | boolean flag = user.updateById(); 47 | System.out.println("是否成功：" + flag); 48 | } 49 | 50 | @Test 51 | public void deleteById() { 52 | User user = new User(); 53 | user.setId(1134351388596264961L); 54 | boolean flag = user.deleteById(); 55 | System.out.println("是否成功：" + flag); 56 | } 57 | 58 | @Test 59 | public void insertOrUpdate() { 60 | User user = new User(); 61 | user.setId(1134354221018144770L); 62 | user.setAge(35); 63 | user.setCreateTime(new Date()); 64 | boolean flag = user.insertOrUpdate(); 65 | System.out.println("是否成功：" + flag); 66 | } 67 | } 68 | -------------------------------------------------------------------------------- /mp/src/test/java/com/lord/mp/user/SimpleTest.java: -------------------------------------------------------------------------------- 1 | package com.lord.mp.user; 2 | 3 | import java.util.Date; 4 | import java.util.List; 5 | 6 | import org.junit.Assert; 7 | import org.junit.Test; 8 | import org.springframework.beans.factory.annotation.Autowired; 9 | 10 | import com.lord.mp.MpApplicationTests; 11 | import com.lord.mp.dao.UserMapper; 12 | import com.lord.mp.entity.User; 13 | 14 | public class SimpleTest extends MpApplicationTests { 15 | 16 | @Autowired 17 | private UserMapper userMapper; 18 | 19 | @Test 20 | public void insert() { 21 | User user = new User(); 22 | user.setName("丁茂义"); 23 | user.setAge(40); 24 | user.setEmail("dmy@baomidou.com"); 25 | user.setManagerId(1088248166370832385L); 26 | user.setCreateTime(new Date()); 27 | int rows = userMapper.insert(user); 28 | System.out.println("影响记录数：" + rows); 29 | System.out.println("主键：" + user.getId()); 30 | } 31 | 32 | @Test 33 | public void select() { 34 | List userList = userMapper.selectList(null); 35 | Assert.assertEquals(5, userList.size()); 36 | userList.forEach(System.out::println); 37 | } 38 | 39 | } 40 | -------------------------------------------------------------------------------- /mp/src/test/java/com/lord/mp/user/UserServiceTest.java: -------------------------------------------------------------------------------- 1 | package com.lord.mp.user; 2 | 3 | import java.util.Arrays; 4 | import java.util.List; 5 | 6 | import org.junit.Test; 7 | import org.springframework.beans.factory.annotation.Autowired; 8 | 9 | import com.baomidou.mybatisplus.core.toolkit.Wrappers; 10 | import com.lord.mp.MpApplicationTests; 11 | import com.lord.mp.entity.User; 12 | import com.lord.mp.service.UserService; 13 | 14 | public class UserServiceTest extends MpApplicationTests { 15 | 16 | @Autowired 17 | private UserService userService; 18 | 19 | // 此处会报错，因为数据库存在多条记录 20 | @Test 21 | public void getOne() { 22 | User one = userService.getOne(Wrappers.lambdaQuery().gt(User::getAge, 25)); 23 | System.out.println(one); 24 | } 25 | 26 | @Test 27 | public void insertBatch() { 28 | User user1 = new User(); 29 | user1.setName("小可爱"); 30 | user1.setAge(28); 31 | user1.setManagerId(1088248166370832385L); 32 | 33 | User user2 = new User(); 34 | user2.setName("大傻瓜"); 35 | user2.setAge(19); 36 | user2.setManagerId(1088248166370832385L); 37 | 38 | List userList = Arrays.asList(user1, user2); 39 | boolean flag = userService.saveBatch(userList); 40 | System.out.println("是否成功：" + flag); 41 | } 42 | 43 | @Test 44 | public void insertOrUpdateBatch() { 45 | User user1 = new User(); 46 | user1.setName("李莫愁"); 47 | user1.setAge(28); 48 | 49 | User user2 = new User(); 50 | user2.setId(1134354221018144774L); 51 | user2.setName("张三丰"); 52 | user2.setAge(20); 53 | user2.setManagerId(1088248166370832385L); 54 | 55 | List userList = Arrays.asList(user1, user2); 56 | boolean flag = userService.saveOrUpdateBatch(userList); 57 | System.out.println("是否成功：" + flag); 58 | } 59 | 60 | @Test 61 | public void selectChain() { 62 | List userList = userService.lambdaQuery().gt(User::getAge, 25).like(User::getName, "雨").list(); 63 | userList.forEach(System.out::println); 64 | } 65 | 66 | @Test 67 | public void updateChain() { 68 | boolean flag = userService.lambdaUpdate().eq(User::getAge, 25).set(User::getAge, 26).update(); 69 | System.out.println("是否成功：" + flag); 70 | } 71 | 72 | @Test 73 | public void removeChain() { 74 | boolean flag = userService.lambdaUpdate().eq(User::getAge, 20).remove(); 75 | System.out.println("是否成功：" + flag); 76 | } 77 | 78 | } 79 | -------------------------------------------------------------------------------- /mp/src/test/java/com/lord/mp/user/UserTest.java: -------------------------------------------------------------------------------- 1 | package com.lord.mp.user; 2 | 3 | import java.util.Arrays; 4 | import java.util.Date; 5 | import java.util.HashMap; 6 | import java.util.List; 7 | import java.util.Map; 8 | 9 | import org.junit.Test; 10 | import org.springframework.beans.factory.annotation.Autowired; 11 | 12 | import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper; 13 | import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper; 14 | import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper; 15 | import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper; 16 | import com.baomidou.mybatisplus.core.metadata.IPage; 17 | import com.baomidou.mybatisplus.core.toolkit.StringUtils; 18 | import com.baomidou.mybatisplus.core.toolkit.Wrappers; 19 | import com.baomidou.mybatisplus.extension.plugins.pagination.Page; 20 | import com.baomidou.mybatisplus.extension.service.additional.query.impl.LambdaQueryChainWrapper; 21 | import com.baomidou.mybatisplus.extension.service.additional.update.impl.LambdaUpdateChainWrapper; 22 | import com.lord.mp.MpApplicationTests; 23 | import com.lord.mp.dao.UserMapper; 24 | import com.lord.mp.entity.User; 25 | 26 | public class UserTest extends MpApplicationTests { 27 | 28 | @Autowired 29 | private UserMapper userMapper; 30 | 31 | @Test 32 | public void insert() { 33 | User user = new User(); 34 | user.setName("张无忌"); 35 | user.setAge(30); 36 | user.setManagerId(1088248166370832385L); 37 | user.setCreateTime(new Date()); 38 | int rows = userMapper.insert(user); 39 | System.out.println("影响记录数：" + rows); 40 | } 41 | 42 | // @Test 43 | public void updateById() { 44 | User user = new User(); 45 | user.setId(1134013564424658946L); 46 | user.setEmail("zwj@baomidou.com"); 47 | int rows = userMapper.updateById(user); 48 | System.out.println("影响记录数：" + rows); 49 | } 50 | 51 | // @Test 52 | public void updateByWrapper1() { 53 | UpdateWrapper userWrapper = Wrappers.update(); 54 | userWrapper.eq("name", "李艺伟").eq("age", 28); 55 | 56 | User user = new User(); 57 | user.setEmail("lyw2019@baomidou.com"); 58 | user.setAge(29); 59 | 60 | int rows = userMapper.update(user, userWrapper); 61 | System.out.println("影响记录数：" + rows); 62 | } 63 | 64 | // 构造器参数和实体对象参数会重复出现 65 | // @Test 66 | public void updateByWrapper2() { 67 | User userWhere = new User(); 68 | userWhere.setName("李艺伟"); 69 | 70 | UpdateWrapper userWrapper = Wrappers.update(userWhere); 71 | userWrapper.eq("name", "李艺伟").eq("age", 28); 72 | 73 | User user = new User(); 74 | user.setAge(29); 75 | 76 | int rows = userMapper.update(user, userWrapper); 77 | System.out.println("影响记录数：" + rows); 78 | } 79 | 80 | // @Test 81 | public void updateByWrapper3() { 82 | UpdateWrapper userWrapper = Wrappers.update(); 83 | userWrapper.eq("name", "李艺伟").eq("age", 29).set("age", 30); 84 | 85 | User user = new User(); 86 | user.setAge(29); 87 | 88 | int rows = userMapper.update(null, userWrapper); 89 | System.out.println("影响记录数：" + rows); 90 | } 91 | 92 | // @Test 93 | public void updateByWrapperLambda() { 94 | LambdaUpdateWrapper lambdaUpdate = Wrappers.lambdaUpdate(); 95 | lambdaUpdate.eq(User::getName, "李艺伟").eq(User::getAge, 30).set(User::getAge, 31); 96 | 97 | int rows = userMapper.update(null, lambdaUpdate); 98 | System.out.println("影响记录数：" + rows); 99 | } 100 | 101 | // @Test 102 | public void updateByWrapperLambdaChain() { 103 | boolean flag = new LambdaUpdateChainWrapper(userMapper).eq(User::getName, "李艺伟").eq(User::getAge, 31) 104 | .set(User::getAge, 32).update(); 105 | 106 | System.out.println("是否成功：" + flag); 107 | } 108 | 109 | // @Test 110 | public void deleteById() { 111 | int rows = userMapper.deleteById(1134013564424658946L); 112 | System.out.println("删除条数：" + rows); 113 | } 114 | 115 | // @Test 116 | public void deleteByMap() { 117 | Map columnMap = new HashMap<>(); 118 | columnMap.put("name", "张无忌1"); 119 | columnMap.put("age", 31); 120 | 121 | int rows = userMapper.deleteByMap(columnMap); 122 | System.out.println("删除条数：" + rows); 123 | } 124 | 125 | // @Test 126 | public void deleteBatchByIds() { 127 | int rows = userMapper.deleteBatchIds(Arrays.asList(1134345992649379841L, 1134346040569274369L)); 128 | System.out.println("删除条数：" + rows); 129 | } 130 | 131 | @Test 132 | public void deleteByWrapper() { 133 | LambdaQueryWrapper lambdaQuery = Wrappers.lambdaQuery(); 134 | lambdaQuery.eq(User::getAge, 27).or().gt(User::getAge, 41); 135 | int rows = userMapper.delete(lambdaQuery); 136 | System.out.println("删除条数：" + rows); 137 | } 138 | 139 | // @Test 140 | public void selectById() { 141 | long id = 1094590409767661570L; 142 | User user = userMapper.selectById(id); 143 | System.out.println(user); 144 | } 145 | 146 | // @Test 147 | public void selectByIds() { 148 | List idList = Arrays.asList(1088248166370832385L, 1088250446457389058L, 1094590409767661570L); 149 | List userList = userMapper.selectBatchIds(idList); 150 | userList.forEach(System.out::println); 151 | } 152 | 153 | // @Test 154 | public void selectByMap() { 155 | Map paramMap = new HashMap<>(); 156 | paramMap.put("name", "张无忌"); 157 | paramMap.put("age", 31); 158 | List userList = userMapper.selectByMap(paramMap); 159 | userList.forEach(System.out::println); 160 | } 161 | 162 | /** 163 | * 姓名中含雨并且年龄小于40 164 | * name like '%雨%' and age < 40 165 | */ 166 | // @Test 167 | public void selectByWarpper1() { 168 | // 条件构造器 169 | QueryWrapper userQuery = Wrappers.query(); 170 | userQuery.like("name", "雨").lt("age", 40); 171 | 172 | List userList = userMapper.selectList(userQuery); 173 | userList.forEach(System.out::println); 174 | } 175 | 176 | /** 177 | * 姓名中含雨并且年龄大于等于20且小于等于40并且email不为空 178 | * name like '%雨%' and age between 20 and 40 and email is not null 179 | */ 180 | // @Test 181 | public void selectByWarpper2() { 182 | // 条件构造器 183 | QueryWrapper userQuery = Wrappers.query(); 184 | userQuery.like("name", "雨").between("age", 20, 40).isNotNull("email"); 185 | 186 | List userList = userMapper.selectList(userQuery); 187 | userList.forEach(System.out::println); 188 | } 189 | 190 | /** 191 | * 姓名为王姓或者年龄大于等于25，按照年龄降序排列，年龄相同按照id升序排列 192 | * name like '王%' or age >= 25 order by age desc,id asc 193 | */ 194 | @Test 195 | public void selectByWarpper3() { 196 | // 条件构造器 197 | QueryWrapper userQuery = Wrappers.query(); 198 | userQuery.likeRight("name", "王").or().ge("age", 25).orderByDesc("age").orderByAsc("id"); 199 | 200 | List userList = userMapper.selectList(userQuery); 201 | userList.forEach(System.out::println); 202 | } 203 | 204 | /** 205 | * 创建时间为2019年2月14日并且直属上级名字为王姓 206 | * date_format(create_time,'%Y-%m-%d') and manager_id in (select id from user where name like '王%') 207 | */ 208 | // @Test 209 | public void selectByWarpper4() { 210 | // 条件构造器 211 | QueryWrapper userQuery = Wrappers.query(); 212 | // 此处写法存在sql注入问题，不建议使用 213 | // userQuery.apply("date_format(create_time,'%Y-%m-%d')='2019-02-14' or true or true").inSql("manager_id", 214 | // "select id from user where name like '王%'"); 215 | 216 | userQuery.apply("date_format(create_time,'%Y-%m-%d')={0}", "2019-02-14").inSql("manager_id", 217 | "select id from user where name like '王%'"); 218 | 219 | List userList = userMapper.selectList(userQuery); 220 | userList.forEach(System.out::println); 221 | } 222 | 223 | /** 224 | * 名字为王姓并且（年龄小于40或邮箱不为空） 225 | * name like '王%' and (age < 40 or email is not null) 226 | */ 227 | // @Test 228 | public void selectByWarpper5() { 229 | // 条件构造器 230 | QueryWrapper userQuery = Wrappers.query(); 231 | userQuery.likeRight("name", "王").and(wq -> wq.lt("age", 40).or().isNotNull("email")); 232 | 233 | List userList = userMapper.selectList(userQuery); 234 | userList.forEach(System.out::println); 235 | } 236 | 237 | /** 238 | * 名字为王姓或者（年龄小于40并且大于20并且邮箱不为空） 239 | * name like '王%' or (age < 40 and age > 20 and email is not null) 240 | */ 241 | // @Test 242 | public void selectByWarpper6() { 243 | // 条件构造器 244 | QueryWrapper userQuery = Wrappers.query(); 245 | userQuery.likeRight("name", "王").or(wq -> wq.lt("age", 40).gt("age", 20).isNotNull("email")); 246 | 247 | List userList = userMapper.selectList(userQuery); 248 | userList.forEach(System.out::println); 249 | } 250 | 251 | /** 252 | * （年龄小于40或邮箱不为空）并且名字为王姓 253 | * (age < 40 or email is not null) and name like '王%' 254 | */ 255 | // @Test 256 | public void selectByWarpper7() { 257 | // 条件构造器 258 | QueryWrapper userQuery = Wrappers.query(); 259 | userQuery.nested(wq -> wq.lt("age", 40).or().isNotNull("email")).likeRight("name", "王"); 260 | 261 | List userList = userMapper.selectList(userQuery); 262 | userList.forEach(System.out::println); 263 | } 264 | 265 | /** 266 | * 年龄为30,31,34,35 267 | * age in (30,31,34,35) 268 | */ 269 | // @Test 270 | public void selectByWarpper8() { 271 | // 条件构造器 272 | QueryWrapper userQuery = Wrappers.query(); 273 | userQuery.in("age", Arrays.asList(30, 31, 34, 35)); 274 | 275 | List userList = userMapper.selectList(userQuery); 276 | userList.forEach(System.out::println); 277 | } 278 | 279 | /** 280 | * 只返回满足条件的其中一条语句即可 281 | * limit 1 282 | */ 283 | // @Test 284 | public void selectByWarpper9() { 285 | // 条件构造器 286 | QueryWrapper userQuery = Wrappers.query(); 287 | userQuery.in("age", Arrays.asList(30, 31, 34, 35)).last("limit 1"); 288 | 289 | List userList = userMapper.selectList(userQuery); 290 | userList.forEach(System.out::println); 291 | } 292 | 293 | /** 294 | * 姓名中含雨并且年龄小于40(只返回id和name两列) 295 | * name like '%雨%' and age < 40 296 | */ 297 | // @Test 298 | public void selectByWarpper10_1() { 299 | // 条件构造器 300 | QueryWrapper userQuery = Wrappers.query(); 301 | userQuery.select("id", "name").like("name", "雨").lt("age", 40); 302 | 303 | List userList = userMapper.selectList(userQuery); 304 | userList.forEach(System.out::println); 305 | } 306 | 307 | /** 308 | * 姓名中含雨并且年龄小于40(只返回id、name、age、email列) 309 | * name like '%雨%' and age < 40 310 | */ 311 | // @Test 312 | public void selectByWarpper10_2() { 313 | // 条件构造器 314 | QueryWrapper userQuery = Wrappers.query(); 315 | userQuery.like("name", "雨").lt("age", 40).select(User.class, 316 | info -> !info.getColumn().equals("create_time") && !info.getColumn().equals("manager_id")); 317 | 318 | List userList = userMapper.selectList(userQuery); 319 | userList.forEach(System.out::println); 320 | } 321 | 322 | /** 323 | * 按照直属上级分组，查询每组的平均年龄、最大年龄、最小年龄。并且只取年龄总和小于500的组 324 | * select avg(age) avg_age, max(age) max_age, min(age) min_age from user 325 | * group by manager_id having sum(age) < 500 326 | */ 327 | // @Test 328 | public void selectByWarpper11() { 329 | // 条件构造器 330 | QueryWrapper userQuery = Wrappers.query(); 331 | userQuery.select("avg(age) avg_age", "max(age) max_age", "min(age) min_age").groupBy("manager_id") 332 | .having("sum(age) < {0}", 500); 333 | 334 | List> userList = userMapper.selectMaps(userQuery); 335 | userList.forEach(System.out::println); 336 | } 337 | 338 | // @Test 339 | public void selectByWarpperObjs() { 340 | // 条件构造器 341 | QueryWrapper userQuery = new QueryWrapper<>(); 342 | userQuery.select("id", "name").like("name", "雨").lt("age", 40); 343 | 344 | List userList = userMapper.selectObjs(userQuery); 345 | userList.forEach(System.out::println); 346 | } 347 | 348 | // @Test 349 | public void selectByWarpperCount() { 350 | // 条件构造器 351 | QueryWrapper userQuery = new QueryWrapper<>(); 352 | userQuery.like("name", "雨").lt("age", 40); 353 | 354 | Integer count = userMapper.selectCount(userQuery); 355 | System.out.println("总记录数：" + count); 356 | } 357 | 358 | // @Test 359 | public void selectByWarpperOne() { 360 | // 条件构造器 361 | QueryWrapper userQuery = new QueryWrapper<>(); 362 | userQuery.like("name", "刘红雨").lt("age", 40); 363 | 364 | User user = userMapper.selectOne(userQuery); 365 | System.out.println(user); 366 | } 367 | 368 | // @Test 369 | public void selectByWarpperEntity() { 370 | User userWhere = new User(); 371 | userWhere.setName("刘红雨"); 372 | userWhere.setAge(32); 373 | 374 | // 条件构造器 375 | QueryWrapper userQuery = new QueryWrapper<>(userWhere); 376 | // userQuery.like("name", "雨").lt("age", 40); 377 | 378 | List userList = userMapper.selectList(userQuery); 379 | userList.forEach(System.out::println); 380 | } 381 | 382 | // @Test 383 | public void selectByWarpperAllEq() { 384 | Map params = new HashMap<>(); 385 | params.put("name", "王天风"); 386 | params.put("age", null); 387 | 388 | // 条件构造器 389 | QueryWrapper userQuery = new QueryWrapper<>(); 390 | // userQuery.allEq(params, false); 391 | userQuery.allEq((k, v) -> !k.equals("name"), params); 392 | 393 | List userList = userMapper.selectList(userQuery); 394 | userList.forEach(System.out::println); 395 | } 396 | 397 | // @Test 398 | public void selectByWarpperMaps() { 399 | // 条件构造器 400 | QueryWrapper userQuery = new QueryWrapper<>(); 401 | userQuery.select("name", "age").like("name", "雨").lt("age", 40); 402 | 403 | List> userList = userMapper.selectMaps(userQuery); 404 | userList.forEach(System.out::println); 405 | } 406 | 407 | // @Test 408 | public void selectLambda1() { 409 | // 条件构造器 410 | LambdaQueryWrapper lambdaQueryWrapper = Wrappers.lambdaQuery(); 411 | lambdaQueryWrapper.like(User::getName, "雨").lt(User::getAge, 40); 412 | 413 | List userList = userMapper.selectList(lambdaQueryWrapper); 414 | userList.forEach(System.out::println); 415 | } 416 | 417 | // @Test 418 | public void selectLambda2() { 419 | // 条件构造器 420 | LambdaQueryWrapper lambdaQuery = new LambdaQueryWrapper<>(); 421 | lambdaQuery.likeRight(User::getName, "王").and(age -> age.lt(User::getAge, 40).or().isNotNull(User::getEmail)); 422 | 423 | List userList = userMapper.selectList(lambdaQuery); 424 | userList.forEach(System.out::println); 425 | } 426 | 427 | // @Test 428 | public void selectLambda3() { 429 | // 条件构造器 430 | List userList = new LambdaQueryChainWrapper(userMapper).like(User::getName, "雨") 431 | .ge(User::getAge, 20).list(); 432 | userList.forEach(System.out::println); 433 | } 434 | 435 | // @Test 436 | public void selectMy() { 437 | LambdaQueryWrapper lambda = new QueryWrapper().lambda(); 438 | lambda.likeRight(User::getName, "王").and(age -> age.lt(User::getAge, 40).or().isNotNull(User::getEmail)); 439 | 440 | List userList = userMapper.selectAll(lambda); 441 | userList.forEach(System.out::println); 442 | } 443 | 444 | // @Test 445 | public void selectListPage() { 446 | // 条件构造器 447 | QueryWrapper userQuery = Wrappers.query(); 448 | userQuery.ge("age", 26); 449 | 450 | Page page = new Page<>(1, 3); 451 | 452 | IPage userPage = userMapper.selectPage(page, userQuery); 453 | System.out.println("总页数：" + userPage.getPages()); 454 | System.out.println("总记录数：" + userPage.getTotal()); 455 | 456 | List userList = userPage.getRecords(); 457 | userList.forEach(System.out::println); 458 | } 459 | 460 | // @Test 461 | public void selectMapsPage() { 462 | // 条件构造器 463 | QueryWrapper userQuery = Wrappers.query(); 464 | userQuery.ge("age", 26); 465 | 466 | Page page = new Page<>(1, 3); 467 | 468 | IPage> userPage = userMapper.selectMapsPage(page, userQuery); 469 | System.out.println("总页数：" + userPage.getPages()); 470 | System.out.println("总记录数：" + userPage.getTotal()); 471 | 472 | List> userList = userPage.getRecords(); 473 | userList.forEach(System.out::println); 474 | } 475 | 476 | // @Test 477 | public void selectPageRecords() { 478 | // 条件构造器 479 | QueryWrapper userQuery = Wrappers.query(); 480 | userQuery.ge("age", 26); 481 | 482 | Page page = new Page<>(1, 3, false); 483 | 484 | IPage> userPage = userMapper.selectMapsPage(page, userQuery); 485 | System.out.println("总页数：" + userPage.getPages()); 486 | System.out.println("总记录数：" + userPage.getTotal()); 487 | 488 | List> userList = userPage.getRecords(); 489 | userList.forEach(System.out::println); 490 | } 491 | 492 | @Test 493 | public void selecMypage() { 494 | // 条件构造器 495 | QueryWrapper userQuery = Wrappers.query(); 496 | userQuery.ge("age", 26); 497 | 498 | Page page = new Page<>(1, 3); 499 | 500 | IPage userPage = userMapper.selectUserPage(page, userQuery); 501 | System.out.println("总页数：" + userPage.getPages()); 502 | System.out.println("总记录数：" + userPage.getTotal()); 503 | 504 | List userList = userPage.getRecords(); 505 | userList.forEach(System.out::println); 506 | } 507 | 508 | /** 509 | * 510 | * 多个查询参数，其中为空则不做条件 511 | */ 512 | // @Test 513 | public void testCondition() { 514 | String name = "王"; 515 | String email = ""; 516 | condition(name, email); 517 | } 518 | 519 | private void condition(String name, String email) { 520 | QueryWrapper userQuery = new QueryWrapper<>(); 521 | 522 | // if (StringUtils.isNotEmpty(name)) { 523 | // userQuery.like("name", name); 524 | // } 525 | // if (StringUtils.isNotEmpty(email)) { 526 | // userQuery.like("email", email); 527 | // } 528 | 529 | userQuery.like(StringUtils.isNotEmpty(name), "name", name).like(StringUtils.isNotEmpty(email), "email", email); 530 | List userList = userMapper.selectList(userQuery); 531 | userList.forEach(System.out::println); 532 | } 533 | 534 | } 535 | --------------------------------------------------------------------------------