一. 简介

　1. 版本

springboot版本为2.0.3.RELEASE，mybatisplus版本为2.1.9， druid版本为1.1.9，swagger版本为2.7.0

　 2. 项目地址

　   https://gitee.com/wbsxch/ssm.git

　3. 留个记录，方便查找

　　　　开发步骤：

　　　　1. 新建springboot项目。

　　　　2. 导入依赖   -->  devtools，lombok，web，thymeleaf，mysql，aop，mybatisplus，druid，swagger。

　　　　3. maven多环境配置。

　　　　4. 编写application.yml  -->  项目端口，项目路径名，mybatisplus配置，mysql多数据源配置。

　　　　5. 新建DataSourceContextHolder 用于设置，获取，清空 当前线程内的数据源变量。

　　　　6. 新建 MultipleDataSource 实现 AbstractRoutingDataSource 类。重写determineCurrentLookupKey()，通过

　　　　　 DataSourceContextHolder 获取数据源变量，用于当作lookupKey取出指定的数据源。

　　　　7. 新建DataSourceEnum 用于存放数据源名称。

　　　　8. 新建注解 DataSource，用于aop类中当作切入点来选择数据源。

　　　　　编写aop类 --> DataSourceAspect.java

　　　　9. 新建并配置DruidConfiguration，MybatisplusConfiguration，SwaggerConfiguration 三个类。

　　　　DruidConfiguration -->  StatViewServlet 和 WebStatFilter Druid监控配置和监控过滤器。

　　　　MybatisplusConfiguration -->  mybatisplus 分页插件，SQL执行效率插件

　　　　　　　　　　　　　　　　　　　 数据源Bean，MultipleDataSource 注入

　　　　　　　　　　　　　　　　　　　 SqlSessionFactory注入

　　　　SwaggerConfiguration --> 常规配置。

　　　　10. crud Controller接口。

　　　　11. 完整项目结构

　　　　

二. 详细步骤

　　1. 新建springboot项目

　　　　idea新建Empty项目 然后创建springboot项目 勾选 devtools，lombok，web，thymeleaf，mysql

　　2. 导入依赖

　　　　pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.seawaterbt</groupId><artifactId>ssm</artifactId><version>0.0.1-SNAPSHOT</version><packaging>jar</packaging><name>ssm</name><description>Demo project for Spring Boot</description><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.0.3.RELEASE</version><relativePath/> <!-- lookup parent from repository --></parent><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding><java.version>1.8</java.version><druid.version>1.1.9</druid.version><swagger.version>2.7.0</swagger.version></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-devtools</artifactId><scope>runtime</scope></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><scope>runtime</scope></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><optional>true</optional></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus-boot-starter</artifactId><version>2.1.9</version></dependency><!-- druid --><dependency><groupId>com.alibaba</groupId><artifactId>druid-spring-boot-starter</artifactId><version>${druid.version}</version></dependency><dependency><groupId>io.springfox</groupId><artifactId>springfox-swagger2</artifactId><version>${swagger.version}</version></dependency><dependency><groupId>io.springfox</groupId><artifactId>springfox-swagger-ui</artifactId><version>${swagger.version}</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-aop</artifactId></dependency></dependencies><profiles><profile><id>prod</id><properties><config.dir>prod</config.dir></properties></profile><profile><id>dev</id><properties><config.dir>dev</config.dir></properties><activation><activeByDefault>true</activeByDefault></activation></profile><profile><id>qa</id><properties><config.dir>qa</config.dir></properties></profile></profiles><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins><resources><resource><filtering>true</filtering><directory>src/main/resources/config/${config.dir}</directory><includes><include>*.*</include></includes></resource><resource><directory>src/main/resources/</directory></resource></resources></build></project>

pom.xml

　　3. Maven多环境配置 看pom文件

　　4. 编写application.yml

　　　　application.yml

server:port: 8080servlet:context-path: /ssm
spring:datasource:druid:db1:username: rootpassword: 123456driver-class-name: com.mysql.jdbc.Driverurl: jdbc:mysql:///mdsinitialSize: 5minIdle: 5maxActive: 20db2:username: rootpassword: 123456driver-class-name: com.mysql.jdbc.Driverurl: jdbc:mysql:///ssjinitialSize: 5minIdle: 5maxActive: 20
mybatis-plus:# 如果是放在src/main/java目录下 classpath:/com/yourpackage/*/mapper/*Mapper.xml# 如果是放在resource目录 classpath:/mapper/*Mapper.xmlmapper-locations: classpath:/mapper/*Mapper.xml#实体扫描，多个package用逗号或者分号分隔typeAliasesPackage: com.seawatebt.ssm.entityglobal-config:#主键类型  0:"数据库ID自增", 1:"用户输入ID",2:"全局唯一ID (数字类型唯一ID)", 3:"全局唯一ID UUID";id-type: 0#字段策略 0:"忽略判断",1:"非 NULL 判断"),2:"非空判断"field-strategy: 2#驼峰下划线转换db-column-underline: true#mp2.3+ 全局表前缀 mp_#table-prefix: mp_#刷新mapper 调试神器refresh-mapper: true#数据库大写下划线转换#capital-mode: true#逻辑删除配置（下面3个配置）logic-delete-value: 4logic-not-delete-value: 0configuration:#配置返回数据库(column下划线命名&&返回java实体是驼峰命名)，自动匹配无需as（没开启这个，SQL需要写as： select user_id as userId）map-underscore-to-camel-case: truecache-enabled: false#配置JdbcTypeForNull, oracle数据库必须配置jdbc-type-for-null: 'null'

application.yml

　　5. 新建DataSourceContextHolder

　　　　DataSourceContextHolder.java

package com.seawaterbt.ssm.multiple;public class DataSourceContextHolder {private static final ThreadLocal<String> contextHolder = new InheritableThreadLocal<>();/***  设置数据源* @param db*/public static void setDataSource(String db){contextHolder.set(db);}/*** 取得当前数据源* @return*/public static String getDataSource(){return contextHolder.get();}/*** 清除上下文数据*/public static void clear(){contextHolder.remove();}
}

DataSourceContextHolder.java

　　6. 新建 MultipleDataSource

　　　　MultipleDataSource.java

package com.seawaterbt.ssm.multiple;import org.springframework.jdbc.datasource.lookup.AbstractRoutingDataSource;public class MultipleDataSource extends AbstractRoutingDataSource {@Overrideprotected Object determineCurrentLookupKey() {return DataSourceContextHolder.getDataSource();}
}

MultipleDataSource.java

　　7. 新建DataSourceEnum

　　　　DataSourceEnum.java

package com.seawaterbt.ssm.enums;public enum DataSourceEnum {DB1("db1"),DB2("db2");private String value;DataSourceEnum(String value){this.value=value;}public String getValue() {return value;}
}

DataSourceEnum.java

　　8. 新建注解 DataSource

　　　　DataSource.java

package com.seawaterbt.ssm.annotation;import com.seawaterbt.ssm.enums.DataSourceEnum;import java.lang.annotation.*;@Target({ElementType.METHOD,ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface DataSource {DataSourceEnum value() default DataSourceEnum.DB1;
}

DataSource.java

　　　　DataSourceAspect.java

@Component
@Slf4j
@Aspect
@Order(-1)
public class DataSourceAspect {@Pointcut("@within(com.seawaterbt.ssm.annotation.DataSource) || @annotation(com.seawaterbt.ssm.annotation.DataSource)")public void pointCut(){}@Before("pointCut() && @annotation(dataSource)")public void doBefore(DataSource dataSource){log.info("选择数据源---"+dataSource.value().getValue());DataSourceContextHolder.setDataSource(dataSource.value().getValue());}@After("pointCut()")public void doAfter(){DataSourceContextHolder.clear();}
}

　　9. 新建并配置DruidConfiguration，MybatisplusConfiguration，SwaggerConfiguration

　　　　DruidConfiguration.java

package com.seawaterbt.ssm.config;import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;@Configuration
public class DruidConfiguration {@Beanpublic ServletRegistrationBean startViewServlet(){ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(),"/druid/*");// IP白名单servletRegistrationBean.addInitParameter("allow","127.0.0.1");// IP黑名单(共同存在时，deny优先于allow)servletRegistrationBean.addInitParameter("deny","127.0.0.1");//控制台管理用户servletRegistrationBean.addInitParameter("loginUsername","admin");servletRegistrationBean.addInitParameter("loginPassword","123456");//是否能够重置数据servletRegistrationBean.addInitParameter("resetEnable","false");return servletRegistrationBean;}@Beanpublic FilterRegistrationBean statFilter(){FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());//添加过滤规则filterRegistrationBean.addUrlPatterns("/*");//忽略过滤的格式filterRegistrationBean.addInitParameter("exclusions","*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");return filterRegistrationBean;}
}

DruidConfiguration.java

　　　　MyBatiesPlusConfiguration.java

package com.seawaterbt.ssm.config;import com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceBuilder;
import com.baomidou.mybatisplus.MybatisConfiguration;
import com.baomidou.mybatisplus.entity.GlobalConfiguration;
import com.baomidou.mybatisplus.mapper.LogicSqlInjector;
import com.baomidou.mybatisplus.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.plugins.PerformanceInterceptor;
import com.baomidou.mybatisplus.spring.MybatisSqlSessionFactoryBean;
import com.seawaterbt.ssm.enums.DataSourceEnum;
import com.seawaterbt.ssm.multiple.MultipleDataSource;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.type.JdbcType;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.context.annotation.Profile;import javax.sql.DataSource;
import java.util.HashMap;
import java.util.Map;@Configuration
@MapperScan("com.seawaterbt.ssm.mapper*")
public class MyBatiesPlusConfiguration {/** 分页插件，自动识别数据库类型* 多租户，请参考官网【插件扩展】*/@Beanpublic PaginationInterceptor paginationInterceptor() {PaginationInterceptor paginationInterceptor = new PaginationInterceptor();// 开启 PageHelper 的支持paginationInterceptor.setLocalPage(true);return paginationInterceptor;}/*** SQL执行效率插件*/@Bean@Profile({"dev","qa"})// 设置 dev test 环境开启public PerformanceInterceptor performanceInterceptor() {PerformanceInterceptor performanceInterceptor = new PerformanceInterceptor();performanceInterceptor.setMaxTime(1000);performanceInterceptor.setFormat(true);return performanceInterceptor;}@Bean(name = "db1")@ConfigurationProperties(prefix = "spring.datasource.druid.db1" )public DataSource db1() {return DruidDataSourceBuilder.create().build();}@Bean(name = "db2")@ConfigurationProperties(prefix = "spring.datasource.druid.db2" )public DataSource db2() {return DruidDataSourceBuilder.create().build();}/*** 动态数据源配置* @return*/@Bean@Primarypublic DataSource multipleDataSource(@Qualifier("db1") DataSource db1, @Qualifier("db2") DataSource db2) {MultipleDataSource multipleDataSource = new MultipleDataSource();Map< Object, Object > targetDataSources = new HashMap<>();targetDataSources.put(DataSourceEnum.DB1.getValue(), db1);targetDataSources.put(DataSourceEnum.DB2.getValue(), db2);//添加数据源
        multipleDataSource.setTargetDataSources(targetDataSources);//设置默认数据源
        multipleDataSource.setDefaultTargetDataSource(db1);return multipleDataSource;}@Bean("sqlSessionFactory")public SqlSessionFactory sqlSessionFactory() throws Exception {MybatisSqlSessionFactoryBean sqlSessionFactory = new MybatisSqlSessionFactoryBean();sqlSessionFactory.setDataSource(multipleDataSource(db1(),db2()));//sqlSessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:/mapper/*/*Mapper.xml"));
MybatisConfiguration configuration = new MybatisConfiguration();//configuration.setDefaultScriptingLanguage(MybatisXMLLanguageDriver.class);
        configuration.setJdbcTypeForNull(JdbcType.NULL);configuration.setMapUnderscoreToCamelCase(true);configuration.setCacheEnabled(false);sqlSessionFactory.setConfiguration(configuration);sqlSessionFactory.setPlugins(new Interceptor[]{ //PerformanceInterceptor(),OptimisticLockerInterceptor()paginationInterceptor() //添加分页功能
        });//sqlSessionFactory.setGlobalConfig(globalConfiguration());return sqlSessionFactory.getObject();}/*@Beanpublic GlobalConfiguration globalConfiguration() {GlobalConfiguration conf = new GlobalConfiguration(new LogicSqlInjector());conf.setLogicDeleteValue("-1");conf.setLogicNotDeleteValue("1");conf.setIdType(0);//conf.setMetaObjectHandler(new MyMetaObjectHandler());conf.setDbColumnUnderline(true);conf.setRefresh(true);return conf;}*/
}

MyBatiesPlusConfiguration.java

　　　　SwaggerConfiguration.java

package com.seawaterbt.ssm.config;import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;@Configuration
@EnableSwagger2
public class SwaggerConfiguration {@Beanpublic Docket createRestApi() {return new Docket(DocumentationType.SWAGGER_2).select().apis(RequestHandlerSelectors.basePackage("com.seawaterbt.ssm.controller")).paths(PathSelectors.any()).build().apiInfo(apiInfo());}private ApiInfo apiInfo(){return new ApiInfoBuilder().title("多数据源 SSM 测试服务").description("多数据源 SSM 测试文档").termsOfServiceUrl("http://www.seawaterbt.com")//.contact(new Contact("海水不甜","http://www.seawaterbt.com","809318068@qq.com")).version("1.0").build();}}

SwaggerConfiguration.java

　　10. crud Controller接口

　　　　1. Entity

　　　　　　Student.java

package com.seawaterbt.ssm.entity;import com.baomidou.mybatisplus.annotations.TableId;
import com.baomidou.mybatisplus.annotations.TableName;
import com.baomidou.mybatisplus.enums.IdType;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;@Api("学生实体对象")
@Data
@TableName("t_student")
public class Student {@ApiModelProperty("学生id")@TableId(type = IdType.AUTO)private Integer id;@ApiModelProperty("学生姓名")private String name;@ApiModelProperty("学生年龄")private Integer age;@ApiModelProperty("学生班级")private String classname;}

Student.java

　　　　　　Teacher.java

package com.seawaterbt.ssm.entity;import com.baomidou.mybatisplus.annotations.TableId;
import com.baomidou.mybatisplus.annotations.TableName;
import com.baomidou.mybatisplus.enums.IdType;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;@Api("老师实体对象")
@Data
@TableName("t_teacher")
public class Teacher {@ApiModelProperty("老师id")@TableId(type = IdType.AUTO)private Integer id;@ApiModelProperty("老师姓名")private String name;@ApiModelProperty("老师年龄")private Integer age;@ApiModelProperty("老师所教学科")private String subject;
}

Teacher.java

　　　　2. Mapper 接口及其xml

　　　　　　StudentMapper.java

package com.seawaterbt.ssm.mapper;import com.baomidou.mybatisplus.mapper.BaseMapper;
import com.seawaterbt.ssm.entity.Student;public interface StudentMapper extends BaseMapper<Student> {
}

StudentMapper.java

　　　　　　StudentMapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.seawaterbt.ssm.mapper.StudentMapper"></mapper>

StudentMapper.xml

　　　　　　TeacherMapper.java

package com.seawaterbt.ssm.mapper;import com.baomidou.mybatisplus.mapper.BaseMapper;
import com.seawaterbt.ssm.entity.Teacher;public interface TeacherMapper extends BaseMapper<Teacher> {
}

TeacherMapper.java

　　　　　　TeacherMapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.seawaterbt.ssm.mapper.TeacherMapper"></mapper>

TeacherMapper.xml

　　　　3. Service 接口及其实现类

　　　　　　StudentService.java

package com.seawaterbt.ssm.service;import com.baomidou.mybatisplus.service.IService;
import com.seawaterbt.ssm.entity.Student;public interface StudentService extends IService<Student> {
}

StudentService.java

　　　　　　StudentServiceImpl.java

package com.seawaterbt.ssm.service.impl;import com.baomidou.mybatisplus.service.impl.ServiceImpl;
import com.seawaterbt.ssm.entity.Student;
import com.seawaterbt.ssm.mapper.StudentMapper;
import com.seawaterbt.ssm.service.StudentService;
import org.springframework.stereotype.Service;@Service
public class StudentServiceImpl extends ServiceImpl<StudentMapper,Student> implements StudentService {
}

StudentServiceImpl.java

　　　　　　TeacherService.java

package com.seawaterbt.ssm.service;import com.baomidou.mybatisplus.service.IService;
import com.seawaterbt.ssm.entity.Teacher;public interface TeacherService extends IService<Teacher> {
}

TeacherService.java

　　　　　　TeacherServiceImpl.java

package com.seawaterbt.ssm.service.impl;import com.baomidou.mybatisplus.mapper.Wrapper;
import com.baomidou.mybatisplus.plugins.Page;
import com.baomidou.mybatisplus.service.impl.ServiceImpl;
import com.seawaterbt.ssm.annotation.DataSource;
import com.seawaterbt.ssm.entity.Teacher;
import com.seawaterbt.ssm.enums.DataSourceEnum;
import com.seawaterbt.ssm.mapper.TeacherMapper;
import com.seawaterbt.ssm.service.TeacherService;
import org.springframework.stereotype.Service;import java.io.Serializable;
import java.util.Collection;
import java.util.List;
import java.util.Map;@Service
public class TeacherServiceImpl extends ServiceImpl<TeacherMapper,Teacher> implements TeacherService {@Override@DataSource(DataSourceEnum.DB2)public boolean insert(Teacher entity) {return super.insert(entity);}@Override@DataSource(DataSourceEnum.DB2)public boolean deleteById(Serializable id) {return super.deleteById(id);}@Override@DataSource(DataSourceEnum.DB2)public boolean updateById(Teacher entity) {return super.updateById(entity);}@Override@DataSource(DataSourceEnum.DB2)public Teacher selectById(Serializable id) {return super.selectById(id);}@Override@DataSource(DataSourceEnum.DB2)public List<Teacher> selectList(Wrapper<Teacher> wrapper) {return super.selectList(wrapper);}@Override@DataSource(DataSourceEnum.DB2)public Page<Teacher> selectPage(Page<Teacher> page) {return super.selectPage(page);}@Override@DataSource(DataSourceEnum.DB2)public Page<Teacher> selectPage(Page<Teacher> page, Wrapper<Teacher> wrapper) {return super.selectPage(page, wrapper);}
}

TeacherServiceImpl.java

　　　　4. Vo

　　　　　　StudentVo.java

package com.seawaterbt.ssm.vo;import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;@Data
@ApiModel("学生vo")
public class StudentVo {@ApiModelProperty("学生姓名")private String name;@ApiModelProperty("学生年龄")private Integer age;@ApiModelProperty("学生班级")private String classname;
}

StudentVo.java

　　　　　　TeacherVo.java

package com.seawaterbt.ssm.vo;import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;@Data
@ApiModel("老师vo")
public class TeacherVo {@ApiModelProperty("老师姓名")private String name;@ApiModelProperty("老师年龄")private Integer age;@ApiModelProperty("老师教的学科")private String subject;
}

TeacherVo.java

　　　　5. Controller

　　　　　　StudentController.java

package com.seawaterbt.ssm.controller;import com.baomidou.mybatisplus.mapper.EntityWrapper;
import com.baomidou.mybatisplus.mapper.Wrapper;
import com.seawaterbt.ssm.entity.Student;
import com.seawaterbt.ssm.service.StudentService;
import com.seawaterbt.ssm.vo.StudentVo;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;import java.util.List;@Api("对学生表CRUD")
@RestController
@RequestMapping("/student")
public class StudentController {@Autowiredprivate StudentService studentService;@ApiOperation("添加学生")@PostMapping("/add")public String add(@RequestBody StudentVo student){Student stu = new Student();stu.setName(student.getName());stu.setAge(student.getAge());stu.setClassname(student.getClassname());return studentService.insert(stu)?"添加成功":"添加失败";}@ApiOperation("删除学生")@DeleteMapping("/delete/{id}")public String delete(@ApiParam("学生的主键id")@PathVariable(value = "id") Integer id){return studentService.deleteById(id)?"删除成功":"删除失败";}@ApiOperation("修改学生")@PostMapping("/update")public String update(@RequestBody Student student){return studentService.updateById(student)?"修改成功":"修改失败";}@ApiOperation(value = "查询学生")@GetMapping("/list")public List<Student> list(){Wrapper<Student> wrapper = new EntityWrapper<>();return studentService.selectList(wrapper);}
}

StudentController.java

　　　　　　TeacherController.java

package com.seawaterbt.ssm.controller;import com.baomidou.mybatisplus.mapper.EntityWrapper;
import com.baomidou.mybatisplus.mapper.Wrapper;
import com.seawaterbt.ssm.entity.Teacher;
import com.seawaterbt.ssm.service.TeacherService;
import com.seawaterbt.ssm.vo.TeacherVo;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;import java.util.List;@Api("对老师表CRUD")
@RestController
@RequestMapping("/teacher")
public class TeacherController {@Autowiredprivate TeacherService teacherService;@ApiOperation(value = "添加老师")@PostMapping("/add")public String add(@RequestBody TeacherVo teacher){Teacher tea = new Teacher();tea.setName(teacher.getName());tea.setAge(teacher.getAge());tea.setSubject(teacher.getSubject());return teacherService.insert(tea)?"添加成功":"添加失败";}@ApiOperation("删除老师")@DeleteMapping("/delete/{id}")public String delete(@ApiParam("老师的主键id")@PathVariable(value = "id") Integer id){return teacherService.deleteById(id)?"删除成功":"删除失败";}@ApiOperation("修改老师")@PostMapping("/update")public String update(@RequestBody Teacher teacher){return teacherService.updateById(teacher)?"修改成功":"修改失败";}@ApiOperation(value = "查询老师")@GetMapping("/list")public List<Teacher> list(){Wrapper<Teacher> wrapper = new EntityWrapper<>();return teacherService.selectList(wrapper);}
}

TeacherController.java

转载于:https://www.cnblogs.com/hsbt2333/p/9347249.html

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