项目
github
https://github.com/1134506391...
目录结构
idea创建最简单的web项目
运行项目
配置pom.xml
mysql
mysql-connector-java
5.1.42
org.mybatis.spring.boot
mybatis-spring-boot-starter
1.3.1
io.springfox
springfox-swagger2
2.9.2
io.springfox
springfox-swagger-ui
2.9.2
配置config
MybatisConfig
package com.javaproject5.demo.config;
import org.mybatis.spring.boot.autoconfigure.ConfigurationCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
/**
* mybatis 注解版
*
*/
@Configuration
public class MybatisConfig {
@Bean
public ConfigurationCustomizer configurationCustomizer() {
return new ConfigurationCustomizer() {
@Override
public void customize(org.apache.ibatis.session.Configuration configuration) {
// 设置驼峰命名规则
configuration.setMapUnderscoreToCamelCase(true);
}
};
}
}
SwaggerConfig
package com.javaproject5.demo.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.*;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;
import java.util.List;
@Configuration
@EnableSwagger2
public class SwaggerConfig {
@Bean
public Docket api() {
return new Docket(DocumentationType.SWAGGER_2)
.apiInfo(apiInfo())
.select()
.apis(RequestHandlerSelectors.any())
.paths(PathSelectors.any())
.build();
}
private ApiInfo apiInfo() {
return new ApiInfoBuilder()
.title("Spring Boot中使用Swagger2构建RESTful APIs")
.description("图书子系统")
.termsOfServiceUrl("更多请关注http://www.baidu.com")
.contact("liangwei")
.version("1.0")
.build();
}
}
WebConfiguration
package com.javaproject5.demo.config;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.boot.autoconfigure.web.servlet.DispatcherServletAutoConfiguration;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.*;
@Configuration
@AutoConfigureAfter(DispatcherServletAutoConfiguration.class)
public class WebConfiguration extends WebMvcConfigurationSupport {
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/**").addResourceLocations("classpath:/static/");
registry.addResourceHandler("swagger-ui.html")
.addResourceLocations("classpath:/META-INF/resources/");
registry.addResourceHandler("/webjars/**")
.addResourceLocations("classpath:/META-INF/resources/webjars/");
super.addResourceHandlers(registry);
}
/**
* CROS跨域的处理
*/
@Override
public void addCorsMappings(CorsRegistry registry) {
registry.addMapping("/**")
.allowedOrigins("*")
.allowedMethods("GET", "POST", "PUT", "OPTIONS", "DELETE", "PATCH")
.allowCredentials(true).maxAge(3600);
}
}
数据库和端口
application.properties
server.port = 8888
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/liang?useUnicode=true&characterEncoding=utf-8&useSSL=false
spring.datasource.username=root
spring.datasource.password=123456model实体类
对应数据库字段
package com.javaproject5.demo.model;
public class User {
private int no;
private String name;
private String email;
}
get,set
生成完整代码
package com.javaproject5.demo.model;
public class User {
private int no;
private String name;
private String email;
public int getNo() {
return no;
}
public void setNo(int no) {
this.no = no;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
}
mapper(sql操作)
package com.javaproject5.demo.mapper;
import com.javaproject5.demo.model.User;
import org.apache.ibatis.annotations.*;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;
import java.util.List;
@Mapper
public interface UserMapper {
@Insert({"insert into user(no, name, email) values(#{no}, #{name}, #{email})"})
void AddUser(User userInfo);
@Delete("delete from user where no=#{no}")
void delUserById(@Param("no") int no);
@Update("update user set name = #{name}, email = #{email} where no = #{no}")
void updateUserByNo(@Param("name") String name, @Param("email") String email, @Param("no") int no);
@Select("select * from user")
List getUser();
}
service
interface接口
package com.javaproject5.demo.service;
import com.javaproject5.demo.model.User;
import org.apache.ibatis.annotations.Param;
import java.util.List;
public interface UserService {
void AddUser(User user);
void delUserById(@Param("no") int no);
void updateUserByNo(User user);
List getUser();
}
impl 实现
package com.javaproject5.demo.service.impl;
import com.javaproject5.demo.mapper.UserMapper;
import com.javaproject5.demo.model.User;
import com.javaproject5.demo.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.Collections;
import java.util.List;
@Service
public class UserServiceImpl implements UserService {
@Autowired
private UserMapper userMapper;
@Override
public void AddUser(User user) {
userMapper.AddUser(user);
}
@Override
public void delUserById(int no) {
userMapper.delUserById(no);
}
@Override
public void updateUserByNo(User user) {
userMapper.updateUserByNo(user.getName(),user.getEmail(),user.getNo());
}
@Override
public List getUser() {
List userList = userMapper.getUser();
// lamdba表达式的使用
// List userListOrderBy= userList.stream().filter((User u) -> u.getName() == "1212").collect(Collectors.toList());
Collections.sort(userList,(user1, user2) -> user1.getNo() - user2.getNo());
return userList;
}
}
controller
package com.javaproject5.demo.controller;
import com.javaproject5.demo.model.User;
import com.javaproject5.demo.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import java.util.List;
@RestController
@RequestMapping("/api")
public class UserController {
@Autowired
private UserService userService;
@RequestMapping(value ="/user", method = RequestMethod.GET)
public List UserQry() {
return userService.getUser();
}
@RequestMapping(value ="/user", method = RequestMethod.POST)
public void UserAdd(User user){
userService.AddUser(user);
}
@RequestMapping(value ="/user", method = RequestMethod.PUT)
public void UserUpdate(User user){
userService.updateUserByNo(user);
}
@RequestMapping(value ="/user", method = RequestMethod.DELETE)
public void UserDel(@RequestParam(value="no") int no){
userService.delUserById(no);
}
}
curd
查找
