最近刚完成一个项目，刚好有一点时间，来完成基于spring+springmvc+mybatis-plus 纯注解开发
一、创建工程、导入依赖
1、新建一个基于maven的web工程，使用JDK1.8
2、调整目录结构
2.1、新建java
2.2、新建resources
2.3、删除web.xml、构建基础包
2.4、工程目录构建完成展示
2、配置tomcat服务器
2.1、服务器配置
2.2、测试服务器配置
3、pom.xml文件配置
1 <properties> 2 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 3 <maven.compiler.source>1.8</maven.compiler.source> 4 <maven.compiler.target>1.8</maven.compiler.target> 5 </properties> 6 7 <dependencies> 8 <dependency> 9 <groupId>org.springframework</groupId> 10 <artifactId>spring-context</artifactId> 11 <version>5.1.5.RELEASE</version> 12 </dependency> 13 <dependency> 14 <groupId>org.springframework</groupId> 15 <artifactId>spring-core</artifactId> 16 <version>5.1.5.RELEASE</version> 17 </dependency> 18 <dependency> 19 <groupId>org.springframework</groupId> 20 <artifactId>spring-beans</artifactId> 21 <version>5.1.5.RELEASE</version> 22 </dependency> 23 <dependency> 24 <groupId>org.springframework</groupId> 25 <artifactId>spring-web</artifactId> 26 <version>5.1.5.RELEASE</version> 27 </dependency> 28 <dependency> 29 <groupId>org.springframework</groupId> 30 <artifactId>spring-webmvc</artifactId> 31 <version>5.1.5.RELEASE</version> 32 </dependency> 33 <dependency> 34 <groupId>org.springframework</groupId> 35 <artifactId>spring-aop</artifactId> 36 <version>5.1.5.RELEASE</version> 37 </dependency> 38 <dependency> 39 <groupId>org.springframework</groupId> 40 <artifactId>spring-tx</artifactId> 41 <version>5.1.5.RELEASE</version> 42 </dependency> 43 <dependency> 44 <groupId>org.springframework</groupId> 45 <artifactId>spring-jdbc</artifactId> 46 <version>5.1.5.RELEASE</version> 47 </dependency> 48 <dependency> 49 <groupId>org.mybatis</groupId> 50 <artifactId>mybatis-spring</artifactId> 51 <version>1.3.2</version> 52 </dependency> 53 <dependency> 54 <groupId>org.mybatis</groupId> 55 <artifactId>mybatis</artifactId> 56 <version>3.4.6</version> 57 </dependency> 58 <dependency> 59 <groupId>com.baomidou</groupId> 60 <artifactId>mybatis-plus</artifactId> 61 <version>3.0.7.1</version> 62 </dependency> 63 <dependency> 64 <groupId>com.baomidou</groupId> 65 <artifactId>mybatis-plus-generator</artifactId> 66 <version>3.0.7.1</version> 67 </dependency> 68 <dependency> 69 <groupId>org.apache.velocity</groupId> 70 <artifactId>velocity-engine-core</artifactId> 71 <version>2.0</version> 72 </dependency> 73 <dependency> 74 <groupId>org.apache.commons</groupId> 75 <artifactId>commons-lang3</artifactId> 76 <version>3.7</version> 77 </dependency> 78 <dependency> 79 <groupId>com.fasterxml.jackson.core</groupId> 80 <artifactId>jackson-core</artifactId> 81 <version>2.9.8</version> 82 </dependency> 83 <dependency> 84 <groupId>com.fasterxml.jackson.core</groupId> 85 <artifactId>jackson-databind</artifactId> 86 <version>2.9.8</version> 87 </dependency> 88 <dependency> 89 <groupId>com.fasterxml.jackson.core</groupId> 90 <artifactId>jackson-annotations</artifactId> 91 <version>2.9.8</version> 92 </dependency> 93 <dependency> 94 <groupId>com.oracle</groupId> 95 <artifactId>ojdbc6</artifactId> 96 <version>11.2.0.1.0</version> 97 </dependency> 98 <dependency> 99 <groupId>mysql</groupId> 100 <artifactId>mysql-connector-java</artifactId> 101 <version>6.0.5</version> 102 </dependency> 103 <dependency> 104 <groupId>com.mchange</groupId> 105 <artifactId>c3p0</artifactId> 106 <version>0.9.5.2</version> 107 </dependency> 108 <dependency> 109 <groupId>com.mchange</groupId> 110 <artifactId>c3p0</artifactId> 111 <version>0.9.5.2</version> 112 </dependency> 113 <dependency> 114 <groupId>com.alibaba</groupId> 115 <artifactId>druid</artifactId> 116 <version>1.1.10</version> 117 </dependency> 118 <dependency> 119 <groupId>org.projectlombok</groupId> 120 <artifactId>lombok</artifactId> 121 <version>1.18.8</version> 122 <scope>provided</scope> 123 </dependency> 124 <dependency> 125 <groupId>junit</groupId> 126 <artifactId>junit</artifactId> 127 <version>4.11</version> 128 <scope>test</scope> 129 </dependency> 130 <dependency> 131 <groupId>javax.servlet</groupId> 132 <artifactId>javax.servlet-api</artifactId> 133 <version>3.1.0</version> 134 <scope>provided</scope> 135 </dependency> 136 </dependencies> 137 138 <build> 139 <finalName>loginannotationday02</finalName> 140 <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) --> 141 <plugins> 142 <plugin> 143 <artifactId>maven-clean-plugin</artifactId> 144 <version>3.1.0</version> 145 </plugin> 146 <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging --> 147 <plugin> 148 <artifactId>maven-resources-plugin</artifactId> 149 <version>3.0.2</version> 150 </plugin> 151 <plugin> 152 <artifactId>maven-compiler-plugin</artifactId> 153 <version>3.8.0</version> 154 </plugin> 155 <plugin> 156 <artifactId>maven-surefire-plugin</artifactId> 157 <version>2.22.1</version> 158 </plugin> 159 <plugin> 160 <artifactId>maven-war-plugin</artifactId> 161 <version>3.2.2</version> 162 </plugin> 163 <plugin> 164 <artifactId>maven-install-plugin</artifactId> 165 <version>2.5.2</version> 166 </plugin> 167 <plugin> 168 <artifactId>maven-deploy-plugin</artifactId> 169 <version>2.8.2</version> 170 </plugin> 171 </plugins> 172 </pluginManagement> 173 </build>
二、编写mybatis-plus的代码生成工具
调整目录结构
在util下新建mybatis代码生成工具类
mybatisplusutil代码如下
1 package com.cxw.util;
2
3 import com.baomidou.mybatisplus.annotation.DbType;
4 import com.baomidou.mybatisplus.core.exceptions.MybatisPlusException;
5 import com.baomidou.mybatisplus.core.toolkit.StringPool;
6 import com.baomidou.mybatisplus.generator.AutoGenerator;
7 import com.baomidou.mybatisplus.generator.InjectionConfig;
8 import com.baomidou.mybatisplus.generator.config.*;
9 import com.baomidou.mybatisplus.generator.config.converts.OracleTypeConvert;
10 import com.baomidou.mybatisplus.generator.config.po.TableInfo;
11 import com.baomidou.mybatisplus.generator.config.rules.IColumnType;
12 import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
13 import com.baomidou.mybatisplus.generator.engine.VelocityTemplateEngine;
14 import org.apache.commons.lang3.StringUtils;
15
16 import java.util.ArrayList;
17 import java.util.List;
18 import java.util.Scanner;
19
20 public class MybatisPlusUtil{
21
22 /**
23 * <p>
24 * 读取控制台内容
25 * </p>
26 */
27 static String Scanner(String tip) {
28 Scanner scanner = new Scanner(System.in);
29 StringBuilder help = new StringBuilder();
30 help.append("请输入" + tip + "：");
31 System.out.println(help.toString());
32 if (scanner.hasNext()) {
33 String ipt = scanner.next();
34 if (StringUtils.isNotEmpty(ipt)) {
35 return ipt;
36 }
37 }
38 throw new MybatisPlusException("请输入正确的" + tip + "！");
39 }
40
41 public static void main(String[] args) {
42 //代码生成器
43 AutoGenerator autoGenerator = new AutoGenerator();
44
45 //全局配置
46 GlobalConfig globalConfig = new GlobalConfig();
47 final String projectPath = System.getProperty("user.dir");
48 globalConfig.setOutputDir(projectPath + "/src/main/java");
49 globalConfig.setAuthor("cxw");
50 // globalConfig.setOpen(false);
51 //是否覆盖文件
52 globalConfig.setFileOverride(true);
53 //不需要ActiveRecord特性的请改为false
54 globalConfig.setActiveRecord(false);
55 //XML 二级缓存
56 globalConfig.setEnableCache(false);
57 //XML ResultMap
58 globalConfig.setBaseResultMap(true);
59 //XML columList
60 globalConfig.setBaseColumnList(false);
61 autoGenerator.setGlobalConfig(globalConfig);
62
63 //数据源配置
64 DataSourceConfig dataSourceConfig = new DataSourceConfig();
65 dataSourceConfig.setDbType(DbType.MYSQL);
66 //类型转换
67 dataSourceConfig.setTypeConvert(new OracleTypeConvert(){
68 @Override
69 public IColumnType processTypeConvert(GlobalConfig globalConfig, String fieldType) {
70 return super.processTypeConvert(globalConfig, fieldType);
71 }
72 });
73 dataSourceConfig.setUrl("jdbc:mysql://localhost:3306/cxwdb?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT%2B8&useSSL=false");
74 dataSourceConfig.setDriverName("com.mysql.cj.jdbc.Driver");
75 dataSourceConfig.setUsername("root");
76 dataSourceConfig.setPassword("123456");
77 autoGenerator.setDataSource(dataSourceConfig);
78
79
80
81 //包配置
82 final PackageConfig packageConfig = new PackageConfig();
83 //基础包名
84 packageConfig.setParent("com.cxw");
85 //模块名
86 packageConfig.setModuleName(Scanner("模块名"));
87 packageConfig.setService("service");
88 packageConfig.setServiceImpl("service.impl");
89 packageConfig.setEntity("entity");
90 packageConfig.setController("controller");
91 packageConfig.setMapper("mapper");
92 packageConfig.setXml("mapper");
93 autoGenerator.setPackageInfo(packageConfig);
94
95 // 自定义配置
96 InjectionConfig injectionConfig = new InjectionConfig() {
97 @Override
98 public void initMap() {
99 // to do nothing
100 }
101 };
102 List<FileOutConfig> focList = new ArrayList<>();
103 focList.add(new FileOutConfig("/templates/mapper.xml.vm") {
104 @Override
105 public String outputFile(TableInfo tableInfo) {
106 // 自定义输入文件名称
107 return projectPath + "/src/main/resources/mapper/" + packageConfig.getModuleName()
108 + "/" + tableInfo.getEntityName() + "Mapper" + StringPool.DOT_XML;
109 }
110 });
111 injectionConfig.setFileOutConfigList(focList);
112 autoGenerator.setCfg(injectionConfig);
113 autoGenerator.setTemplate(new TemplateConfig().setXml(null));
114
115 // 策略配置
116 StrategyConfig strategy = new StrategyConfig();
117 strategy.setNaming(NamingStrategy.underline_to_camel);
118 strategy.setColumnNaming(NamingStrategy.underline_to_camel);
119 strategy.setEntityLombokModel(false);
120 strategy.setRestControllerStyle(true);
121 strategy.setCapitalMode(true);
122 strategy.setInclude(Scanner("表名"));
123 strategy.setControllerMappingHyphenStyle(true);
124 strategy.setEntityTableFieldAnnotationEnable(true);
125 // strategy.setTablePrefix("n_");
126 autoGenerator.setStrategy(strategy);
127 autoGenerator.setTemplateEngine(new VelocityTemplateEngine());
128 autoGenerator.execute();
129 }
130 }
通过工具类生成代码
生成后目录结构如下
三、spring+springmvc+mybatis-plus 纯注解搭建
1、构建核心配置文件
1 package com.cxw.config;
2
3 import org.springframework.context.annotation.ComponentScan;
4 import org.springframework.context.annotation.Configuration;
5 import org.springframework.context.annotation.FilterType;
6 import org.springframework.stereotype.Controller;
7
8
9 @Configuration
10 @ComponentScan(basePackages = {"com.cxw"},excludeFilters = {
11 @ComponentScan.Filter(type = FilterType.ANNOTATION,value = Controller.class),
12 })
13 /**
14 * 核心配置文件
15 */
16 public class AppConfig {
17
18 }
2、构建springmvc配置文件
1 package com.cxw.config;
2
3 import org.springframework.context.annotation.ComponentScan;
4 import org.springframework.context.annotation.Configuration;
5 import org.springframework.context.annotation.FilterType;
6 import org.springframework.stereotype.Controller;
7 import org.springframework.web.servlet.config.annotation.EnableWebMvc;
8
9 @Configuration
10 @ComponentScan(basePackages = "com.cxw",
11 includeFilters = {@ComponentScan.Filter(type = FilterType.ANNOTATION,
12 value = Controller.class)})
13 @EnableWebMvc
14 /**
15 * springmvc配置文件
16 */
17 public class WebConfig {
18
19 }
3、构建数据库配置文件
1 spring.datasource.user=root 2 spring.datasource.password=123456 3 spring.datasource.driver=com.mysql.cj.jdbc.Driver 4 spring.datasource.url=jdbc:mysql://localhost:3306/cxwdb?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT%2B8&useSSL=false
4、构建数据库配置文件关联文件
1 package com.cxw.config;
2
3 import lombok.Data;
4 import org.springframework.beans.factory.annotation.Value;
5 import org.springframework.context.annotation.Configuration;
6 import org.springframework.context.annotation.PropertySource;
7
8 @PropertySource("classpath:db.properties")
9 @Data
10 @Configuration
11 public class PropertyConfig {
12
13 @Value("${spring.datasource.url}")
14 private String url;
15 @Value("${spring.datasource.driver}")
16 private String driver;
17 @Value("${spring.datasource.user}")
18 private String user;
19 @Value("${spring.datasource.password}")
20 private String password;
21
22 }
5、构建mybatisplus配置文件
1 package com.cxw.config;
2
3 import com.alibaba.druid.pool.DruidDataSource;
4 import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
5 import com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean;
6 import org.mybatis.spring.annotation.MapperScan;
7 import org.springframework.context.annotation.Bean;
8 import org.springframework.context.annotation.Configuration;
9
10 import javax.sql.DataSource;
11
12 @Configuration
13 @MapperScan(value = "com.cxw.studentinfo.mapper")
14 public class MybatisPlusConfig {
15 /**
16 * 配置数据源
17 */
18 @Bean
19 public DataSource dataSource(PropertyConfig propertyConfig){
20 DruidDataSource dataSource = new DruidDataSource();
21 dataSource.setUsername(propertyConfig.getUser());
22 dataSource.setPassword(propertyConfig.getPassword());
23 dataSource.setUrl(propertyConfig.getUrl());
24 dataSource.setDriverClassName(propertyConfig.getDriver());
25 return dataSource;
26 }
27
28 /*@Bean
29 public DataSource dataSource(PropertyConfig propertyConfig) throws Exception {
30 ComboPooledDataSource dataSource = new ComboPooledDataSource();
31 dataSource.setUser(propertyConfig.getUser());
32 dataSource.setPassword(propertyConfig.getPassword());
33 dataSource.setJdbcUrl(propertyConfig.getUrl());
34 dataSource.setDriverClass(propertyConfig.getDriver());
35 return dataSource;
36 }*/
37
38 /**
39 * 获得getMybatisSqlSessionFactoryBean
40 * @return
41 */
42 @Bean
43 public MybatisSqlSessionFactoryBean sqlSessionFactory(DataSource dataSource){
44 MybatisSqlSessionFactoryBean mybatisPlus = new MybatisSqlSessionFactoryBean();
45 mybatisPlus.setDataSource(dataSource);
46 return mybatisPlus;
47 }
48
49
50 /**
51 * 设置mapper文件的扫描路径
52 * @return
53 */
54 /* @Bean
55 public MapperScannerConfigurer getMapperScannerConfigurer(){
56 MapperScannerConfigurer mapperScannerConfigurer = new MapperScannerConfigurer();
57 mapperScannerConfigurer.setBasePackage("com.cxw.studentinfo,mapper");
58 return mapperScannerConfigurer;
59 }*/
60
61 /**
62 * 分页插件
63 * @return
64 */
65 @Bean
66 public PaginationInterceptor getPaginationInterceptor(){
67 PaginationInterceptor paginationInterceptor = new PaginationInterceptor();
68 //自定义方言 可以没有
69 paginationInterceptor.setDialectType("mysql");
70 return paginationInterceptor;
71 }
72
73 }
6、构建核心初始化文件
package com.cxw.config;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
/**
* web.xml替代文件，可以简单理解为相web.xml文件
*/
public class WebInit extends AbstractAnnotationConfigDispatcherServletInitializer {
//将bean加入容器
@Override
protected Class<?>[] getRootConfigClasses() {
//这里可以配置需要加入容器的Bean,同样可以声明配置类,然后加Bean
return new Class[]{AppConfig.class,MybatisPlusConfig.class};
}
//这个也是相当于将Bean加入容器
//相当于springmvc容器
// url映射配置,返回spring的配置文件
//这里WebConfig主要是配置DispatcherSerlvet,视频解析器,JSON等
@Override
protected Class<?>[] getServletConfigClasses() {
//return null;
return new Class[]{WebConfig.class};
}
//拦截请求匹配,只拦截/
@Override
protected String[] getServletMappings() {
return new String[]{"/"};
}
}
四、逻辑代码编写
1、controller代码
package com.cxw.studentinfo.controller;
import com.cxw.studentinfo.entity.TblStudent;
import com.cxw.studentinfo.service.ITblStudentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* <p>
* 前端控制器
* </p>
*
* @author cxw
* @since 2019-09-25
*/
@RestController
@RequestMapping("/studentinfo/tbl-student")
public class TblStudentController {
private ITblStudentService iTblStudentService;
@Autowired
public TblStudentController(ITblStudentService iTblStudentService){
this.iTblStudentService = iTblStudentService;
}
public TblStudentController(){
}
@RequestMapping("/gettblstudentbyid/{id}")
public TblStudent getTblStudentById(@PathVariable("id") String id){
TblStudent student = iTblStudentService.getById(id);
return student;
}
}
2、serivce代码
1 package com.cxw.studentinfo.service;
2
3 import com.cxw.studentinfo.entity.TblStudent;
4 import com.baomidou.mybatisplus.extension.service.IService;
5
6 /**
7 * <p>
8 * 服务类
9 * </p>
10 *
11 * @author cxw
12 * @since 2019-09-25
13 */
14 public interface ITblStudentService extends IService<TblStudent> {
15
16 }
3、impl代码
package com.cxw.studentinfo.service.impl;
import com.cxw.studentinfo.entity.TblStudent;import com.cxw.studentinfo.mapper.TblStudentMapper;import com.cxw.studentinfo.service.ITblStudentService;import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;
/** * <p> * 服务实现类 * </p> * * @author cxw * @since 2019-09-25 */@Servicepublic class TblStudentServiceImpl extends ServiceImpl<TblStudentMapper, TblStudent> implements ITblStudentService {
private TblStudentMapper tblStudentMapper;
@Autowired public TblStudentServiceImpl(TblStudentMapper tblStudentMapper){ this.tblStudentMapper = tblStudentMapper; }
public TblStudentServiceImpl( ){
}
4、mapper代码
1 package com.cxw.studentinfo.mapper;
2
3 import com.cxw.studentinfo.entity.TblStudent;
4 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
5 import org.springframework.stereotype.Service;
6
7 /**
8 * <p>
9 * Mapper 接口
10 * </p>
11 *
12 * @author cxw
13 * @since 2019-09-25
14 */
15 @Service
16 public interface TblStudentMapper extends BaseMapper<TblStudent> {
17
18 }
5、entity代码
1 package com.cxw.studentinfo.entity;
2
3 import com.baomidou.mybatisplus.annotation.TableId;
4 import java.time.LocalDateTime;
5 import com.baomidou.mybatisplus.annotation.TableField;
6 import java.io.Serializable;
7
8 /**
9 * <p>
10 *
11 * </p>
12 *
13 * @author cxw
14 * @since 2019-09-25
15 */
16 public class TblStudent implements Serializable {
17
18 private static final long serialVersionUID = 1L;
19
20 /**
21 * 主键
22 */
23 @TableId("id")
24 private String id;
25
26 /**
27 * 姓名
28 */
29 @TableField("name")
30 private String name;
31
32 /**
33 * 年龄
34 */
35 @TableField("age")
36 private String age;
37
38 /**
39 * 性别
40 */
41 @TableField("sex")
42 private String sex;
43
44 /**
45 * 数据新增用户id
46 */
47 @TableField("datainsuserid")
48 private String datainsuserid;
49
50 /**
51 * 数据新增时间
52 */
53 @TableField("datainstime")
54 private LocalDateTime datainstime;
55
56
57 public String getId() {
58 return id;
59 }
60
61 public void setId(String id) {
62 this.id = id;
63 }
64
65 public String getName() {
66 return name;
67 }
68
69 public void setName(String name) {
70 this.name = name;
71 }
72
73 public String getAge() {
74 return age;
75 }
76
77 public void setAge(String age) {
78 this.age = age;
79 }
80
81 public String getSex() {
82 return sex;
83 }
84
85 public void setSex(String sex) {
86 this.sex = sex;
87 }
88
89 public String getDatainsuserid() {
90 return datainsuserid;
91 }
92
93 public void setDatainsuserid(String datainsuserid) {
94 this.datainsuserid = datainsuserid;
95 }
96
97 public LocalDateTime getDatainstime() {
98 return datainstime;
99 }
100
101 public void setDatainstime(LocalDateTime datainstime) {
102 this.datainstime = datainstime;
103 }
104
105 @Override
106 public String toString() {
107 return "TblStudent{" +
108 "id=" + id +
109 ", name=" + name +
110 ", age=" + age +
111 ", sex=" + sex +
112 ", datainsuserid=" + datainsuserid +
113 ", datainstime=" + datainstime +
114 "}";
115 }
116 }
6、mapper.xml代码
1 <?xml version="1.0" encoding="UTF-8"?> 2 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> 3 <mapper namespace="com.cxw.studentinfo.mapper.TblStudentMapper"> 4 5 <!-- 通用查询映射结果 --> 6 <resultMap id="BaseResultMap" type="com.cxw.studentinfo.entity.TblStudent"> 7 <id column="id" property="id" /> 8 <result column="name" property="name" /> 9 <result column="age" property="age" /> 10 <result column="sex" property="sex" /> 11 <result column="datainsuserid" property="datainsuserid" /> 12 <result column="datainstime" property="datainstime" /> 13 </resultMap> 14 15 </mapper>
五、测试
1、数据库查询结果展示
2、运行程序，访问后结构展示
六、总结和疑问
1、使用代码生成器的时候，如果使用的是Oracle数据库，表名似乎需要大写才能生成
2、配置mapper扫包的时候，如果使用非注解的形式，似乎会造成重复扫包，导致会找不到service文件
以上两个问题是我在构建项目的时候遇到的问题
原文地址：https://www.cnblogs.com/saber-servlet/p/11586511.html
时间： 2024-10-08 19:12:22