mysql mysql-connector-java 8.0.26
src/main/resources *.properties *.xml *.yml **/*.xml
jdbc.driver=com.mysql.cj.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/crm?useUnicode=true&characterEncoding=UTF-8 jdbc.username=root jdbc.password=123456
org.mybatis.generator mybatis-generator-maven-plugin 1.3.2 mysql mysql-connector-java 8.0.26 true
package com.hyx.springboot03.controller; import com.hyx.springboot03.mapper.CustomerMapper; import com.hyx.springboot03.model.Customer; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.*; @RestController @RequestMapping("/jdbc") public class JdbcController { @Autowired public CustomerMapper customerMapper; @GetMapping("/get") public Customer list(Integer cid) { return customerMapper.selectByPrimaryKey(cid); } @DeleteMapping("/delete") public int delete(Integer cid) { return customerMapper.deleteByPrimaryKey(cid); } @PostMapping("/add") public int add(Customer customer) { return customerMapper.insertSelective(customer); } }
问题解决Could not autowire. No beans of ‘customerMapper‘ type found.
还要修改启动类,在启动类上加上@mapperScan(“com.hyx.springboot03.mapper”)
不然启动就会出现以下问题
Field customerMapper in com.hyx.springboot03.controller.JdbcController required a bean of type 'com.hyx.springboot03.mapper.CustomerMapper' that could not be found. The injection point has the following annotations: - @org.springframework.beans.factory.annotation.Autowired(required=true) Action: Consider defining a bean of type 'com.hyx.springboot03.mapper.CustomerMapper' in your configuration.
好,当我们修改完成后
发送请求,成功返回数据
com.baomidou mybatis-plus-boot-starter 3.4.2 com.baomidou mybatis-plus-generator 3.4.1 org.freemarker freemarker 2.3.31
application.yml
server: port: 8082 spring: application: name: springboot03 datasource: driver-class-name: com.mysql.cj.jdbc.Driver url: jdbc:mysql://localhost:3306/crm?useUnicode=true&characterEncoding=UTF-8 password: 123456 username: root logging: level: com.hyx.springboot03: debug mybatis-plus: mapper-locations: classpath:mappers/**/*.xml type-aliases-package: com.hyx.springboot03.model
package com.hyx.springboot03.mp; import com.baomidou.mybatisplus.annotation.DbType; import com.baomidou.mybatisplus.annotation.IdType; import com.baomidou.mybatisplus.core.exceptions.MybatisPlusException; import com.baomidou.mybatisplus.core.toolkit.StringPool; import com.baomidou.mybatisplus.core.toolkit.StringUtils; import com.baomidou.mybatisplus.generator.AutoGenerator; import com.baomidou.mybatisplus.generator.InjectionConfig; import com.baomidou.mybatisplus.generator.config.*; import com.baomidou.mybatisplus.generator.config.po.TableInfo; import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy; import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine; import java.util.ArrayList; import java.util.List; import java.util.Scanner; /** * mybatis-plus代码生成 */ public class MPGenerator { /** ** 读取控制台内容 *
*/ public static String scanner(String tip) { Scanner scanner = new Scanner(System.in); StringBuilder help = new StringBuilder(); help.append("请输入" + tip); System.out.println(help.toString()); if (scanner.hasNext()) { String ipt = scanner.next(); if (StringUtils.isNotBlank(ipt)) { if ("quit".equals(ipt)) return ""; return ipt; } } throw new MybatisPlusException("请输入正确的" + tip + "!"); } public static void main(String[] args) { // 代码生成器 AutoGenerator mpg = new AutoGenerator(); // 1.全局配置 GlobalConfig gc = new GlobalConfig(); String projectPath = System.getProperty("user.dir") + "/SpringBoot03"; System.out.println(projectPath); gc.setOutputDir(projectPath + "/src/main/java"); gc.setOpen(false); gc.setBaseResultMap(true);//生成BaseResultMap gc.setActiveRecord(false);// 不需要ActiveRecord特性的请改为false gc.setEnableCache(false);// XML 二级缓存 gc.setBaseResultMap(true);// XML ResultMap gc.setBaseColumnList(true);// XML columList //gc.setSwagger2(true); //实体属性 Swagger2 注解 gc.setAuthor("lky"); // 自定义文件命名,注意 %s 会自动填充表实体属性! gc.setMapperName("%sMapper"); gc.setXmlName("%sMapper"); gc.setServiceName("%sService"); gc.setServiceImplName("%sServiceImpl"); gc.setControllerName("%sController"); gc.setIdType(IdType.AUTO); mpg.setGlobalConfig(gc); // 2.数据源配置 DataSourceConfig dsc = new DataSourceConfig(); dsc.setDbType(DbType.MYSQL); dsc.setUrl("jdbc:mysql://localhost:3306/crm?useUnicode=true&characterEncoding=UTF-8"); dsc.setDriverName("com.mysql.cj.jdbc.Driver"); dsc.setUsername("root"); dsc.setPassword("123456"); mpg.setDataSource(dsc); // 3.包配置 PackageConfig pc = new PackageConfig(); String moduleName = scanner("模块名(quit退出,表示没有模块名)"); if (StringUtils.isNotBlank(moduleName)) { pc.setModuleName(moduleName); } pc.setParent("com.hyx.springboot03") .setMapper("mapper") .setService("service") .setController("controller") .setEntity("model"); mpg.setPackageInfo(pc); // 4.自定义配置 InjectionConfig cfg = new InjectionConfig() { @Override public void initMap() { // to do nothing } }; // 如果模板引擎是 freemarker String templatePath = "/templates/mapper.xml.ftl"; // 自定义输出配置 ListfocList = new ArrayList<>(); // 自定义配置会被优先输出 focList.add(new FileOutConfig(templatePath) { @Override public String outputFile(TableInfo tableInfo) { // 自定义输出文件名 , 如果你 Entity 设置了前后缀、此处注意 xml 的名称会跟着发生变化!! if (StringUtils.isNotBlank(pc.getModuleName())) { return projectPath + "/src/main/resources/mapper/" + pc.getModuleName() + "/" + tableInfo.getEntityName() + "Mapper" + StringPool.DOT_XML; } else { return projectPath + "/src/main/resources/mapper/" + tableInfo.getEntityName() + "Mapper" + StringPool.DOT_XML; } } }); cfg.setFileOutConfigList(focList); mpg.setCfg(cfg); // 配置模板 TemplateConfig templateConfig = new TemplateConfig(); templateConfig.setXml(null); mpg.setTemplate(templateConfig); // 5.策略配置 StrategyConfig strategy = new StrategyConfig(); // 表名生成策略(下划线转驼峰命名) strategy.setNaming(NamingStrategy.underline_to_camel); // 列名生成策略(下划线转驼峰命名) strategy.setColumnNaming(NamingStrategy.underline_to_camel); // 是否启动Lombok配置 strategy.setEntityLombokModel(true); // 是否启动REST风格配置 strategy.setRestControllerStyle(true); // 自定义实体父类strategy.setSuperEntityClass("com.baomidou.mybatisplus.extension.activerecord.Model"); // 自定义service父接口strategy.setSuperServiceClass("com.baomidou.mybatisplus.extension.service.IService"); // 自定义service实现类strategy.setSuperServiceImplClass("com.baomidou.mybatisplus.extension.service.impl.ServiceImpl"); // 自定义mapper接口strategy.setSuperMapperClass("com.baomidou.mybatisplus.core.mapper.BaseMapper"); strategy.setSuperEntityColumns("id"); // 写于父类中的公共字段plus strategy.setSuperEntityColumns("id"); strategy.setInclude(scanner("表名,多个英文逗号分割").split(",")); strategy.setControllerMappingHyphenStyle(true); //表名前缀(可变参数):“t_”或”“t_模块名”,例如:t_user或t_sys_user strategy.setTablePrefix("t_", "t_sys_"); //strategy.setTablePrefix(scanner("请输入表前缀")); mpg.setStrategy(strategy); mpg.setTemplateEngine(new FreemarkerTemplateEngine()); // 执行 mpg.execute(); } }
List
@Autowired private UserMapper userMapper; @Override public List
@Select("SELECT u.id,u.user_name,u.true_name,r.role_name FROM t_user u,t_role r WHERE u.roleId=r.id AND u.roleId='17'") List
// 连表查询 @GetMapping("/userRole") public List