SpringBoot笔记

目录

读取配置文件

单一读取

全部读取

封装到对象中

整合第三方技术

整合JUnit

整合Mybatis

整合MyBatisPlus

整合Druid

Lombok

数据层标准开发

业务层开发基于MybatisPlus

表现层开发Restful风格

整合MongoDB

整合Redis

读取配置文件

单一读取

@Value("${配置项}")  

全部读取

@Autowired

private Environment env;

封装到对象中

@ConfigurationProperties(prefix = "配置项对象名")

public class 类名{}

整合第三方技术

整合JUnit

1. 引入对应的starter
2. @SpringBootTest(classes = 被测试类.class)
3. 自动装载测试对象

测试类与被测试类文件不一致时，要加参数classes

整合Mybatis

整合MyBatisPlus

整合Druid

Lombok

        org.projectlombok

        lombok

@Data

数据层标准开发

1. 引入mybatisPlus和Druid
2. 配置数据源
3. 开发Dao接口，继承BaseMapper
4. 测试

package com.hsb.domain;
 
import lombok.Data;
 
import java.io.Serializable;
 
@Data
public class Book implements Serializable {
    private Integer id;
    private String type;
    private String name;
    private String description;
 
    // 省略get、set等
}

package com.hsb.dao;
 
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.hsb.domain.Book;
import org.apache.ibatis.annotations.Mapper;
 
@Mapper
public interface BookDao extends BaseMapper {
 
}

业务层开发基于MybatisPlus

package com.hsb.service;
 
import com.baomidou.mybatisplus.extension.service.IService;
import com.hsb.domain.Book;
 
public interface BookServicePlus extends IService {
}

package com.hsb.service.serviceImpl;
 
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.hsb.dao.BookDao;
import com.hsb.domain.Book;
import com.hsb.service.BookServicePlus;
 
public class BookServicePlusImpl extends ServiceImpl implements BookServicePlus {
}

表现层开发Restful风格

package com.hsb.Controller;
 
import com.hsb.domain.Book;
import com.hsb.service.BookServicePlus;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
 
import java.util.List;
 
@RestController
@RequestMapping("/books")
public class BookController {
    @Autowired
    private BookServicePlus bookServicePlus;
 
    @GetMapping
    public List getAll() {
        return bookServicePlus.list();
    }
 
    @PostMapping
    public Boolean save(@RequestBody Book book) {
        return bookServicePlus.save(book);
    }
 
    @PutMapping
    public Boolean update(@RequestBody Book book) {
        return bookServicePlus.update(book, null);
    }
 
    @DeleteMapping("{id}")
    public Boolean delete(@PathVariable Integer id) {
        return bookServicePlus.removeById(id);
    }
 
    @GetMapping("{id}")
    public Book getById(@PathVariable Integer id) {
        return bookServicePlus.getById(id);
    }
}
 

整合MongoDB

整合Redis