1.SprintBootj集成mybaits 连接数据库
pom.xml文件添加依赖
<!-- mysql驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.30</version>
</dependency>
<!-- mybatis 整合Sprintboot框架起步依赖-->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.0.0</version>
</dependency>
</dependencies>mapper文件 数据持久层
- RESTFul风格
简单的说就是没有方法体，直接拼接地址
@GetMapping(value = "/studentrestfull/detail/{id}/{name}")
public Object student1(@PathVariable("id") Integer id,
@PathVariable("name") String name)
注意的点：
//以上代码restful请求不容易区分请求类型造成错误 //路径冲突；通常在RESTFUL风格中方法的请求方式会按照增删改查进行区分 //路径冲突；更改请求路径 //RESTFul请求风格要求路径中出现都是名词，不要是动词
@RestController
public class StudentControllerRestful {
@RequestMapping(value = "studentrestfull")
public Object studentrestfull(Integer id,String name){
Student student = new Student();
student.setId(id);
student.setName(name);
return student;
}
//restful请求风格 (get) http://127.0.0.1:8081/springboot/studentrestfull/detail/11/lisi
// @RequestMapping(value = "/studentrestfull/detail/{id}/{name}")
@GetMapping(value = "/studentrestfull/detail/{id}/{name}")
public Object student1(@PathVariable("id") Integer id,
@PathVariable("name") String name){
Map<String,Object> retMap = new HashMap<>();
retMap.put("id",id);
retMap.put("name",name);
return retMap;
}
//restful请求风格 使用postman进行数据验证
// @RequestMapping(value = "/studentrestfull/detail/{id}/{status}")
@DeleteMapping(value = "/studentrestfull/detail/{id}/{status}")
public Object student2(@PathVariable("id") Integer id,
@PathVariable("status") String status){
Map<String,Object> retMap = new HashMap<>();
retMap.put("id",id);
retMap.put("status",status);
return retMap;
}
//以上代码restful请求不容易区分请求类型造成错误
//通常在RESTFUL风格中方法的请求方式会按照增删改查进行区分
//city与status进行冲突
// @DeleteMapping(value = "/studentrestfull/detail/{id}/{city}")
@DeleteMapping(value = "/studentrestfull/{id}/detail/{city}")
public Object student3(@PathVariable("id") Integer id,
@PathVariable("city") String city){
Map<String,Object> retMap = new HashMap<>();
retMap.put("id",id);
retMap.put("city",city);
return retMap;
}
}- 集成redis
1.添加依赖 （pom文件）
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>2.核心配置文件中添加redis配置(application.properties文件)
spring.redis.host=127.0.0.1 spring.redis.port= 6379 spring.redis.password= 123456
redis控制器
@Controller
public class StudentControllerRedis {
@Autowired
private StudentService studentService;
@RequestMapping(value = "/put")
public @ResponseBody Object putredis(String key,String value){
studentService.put(key,value);
return "写入成功";
}
@RequestMapping(value = "/get")
public @ResponseBody String get(){
String count = studentService.get("name");
return "数据count为：" +count;
}
}
redis接口
public interface StudentService {
// 根据学生id查询学生 这是接口 需要实现类StudentServiceImpl
Student querStudengById(Integer id);
//修改学生id
int updateStudentById(Student student);
//将值存放到server中
void put(String key, String value);
//从redis获取count值
String get(String count);
}
redis接口实现层
//StudentService 的实现类 业务层
@Service
public class StudentServiceImpl implements StudentService {
@Autowired //加载对象
private StudentMapper studentMapper;
@Autowired //加载对象
private RedisTemplate<Object,Object> redisTemplate;
@Override
public Student querStudengById(Integer id) {
return studentMapper.selectByPrimaryKey(id);
}
@Transactional //事物，int a = 10/0; 执行出错，数据库不改变
@Override
public int updateStudentById(Student student) {
int i = studentMapper.updateByPrimaryKeySelective(student);
// int a = 10/0;
return i;
}
@Override
public void put(String key,String value){
redisTemplate.opsForValue().set(key,value); //操作string
}
@Override
public String get(String key){
String count = (String) redisTemplate.opsForValue().get(key);
return count;
}
}
- SpringBoot 集成Dubbo 分布式框架 (服务提供者consumer)
pom文件
<!-- dubbo集成springboot起步依赖-->
<dependency>
<groupId>com.alibaba.spring.boot</groupId>
<artifactId>dubbo-spring-boot-starter</artifactId>
<version>2.0.0</version>
</dependency>
<!-- 注册中心-->
<dependency>
<groupId>com.101tec</groupId>
<artifactId>zkclient</artifactId>
<version>0.10</version>
</dependency>
配置文件
#设置Dubbo的配置 spring.application.name=022-springboot-dubbo-consumer #当前工程是一个服务的提供者 spring.dubbo.server = true #设置注册中心 spring.dubbo.registry=zookeeper://127.0.0.1:2181
web中的控制文件
@Controller
public class Studentconsumer {
// dubbo:reference interface="" version="" check=""
@Reference(interfaceClass = StudentServiceDobbu.class,version = "1.0.0",check = false)
private StudentServiceDobbu studentServiceDobbu;
//http://127.0.0.1:8081/student/count
@RequestMapping(value = "student/count")
public @ResponseBody Object studnetCount(){
Integer allStudnetCount = studentServiceDobbu.querAllStudentCount();
return "学生总人数" + allStudnetCount;
}
}
dubbo接口
package com.javawebs.springboot_014.service;
public interface StudentServiceDobbu {
// 获取学生总人数
Integer querAllStudentCount();
}
impl接口实现类
package com.javawebs.springboot_014.service.impl;
import com.alibaba.dubbo.config.annotation.Service;
import com.javawebs.springboot_014.service.StudentServiceDobbu;
import org.springframework.stereotype.Component;
@Component //加载到springboot
@Service(interfaceClass = StudentServiceDobbu.class,version = "1.0.0",timeout = 15000) //暴露接口
public class StudentServiceDobbuImpl implements StudentServiceDobbu {
@Override
public Integer querAllStudentCount() {
//调用数据持久层
return 10000;
}
}
启动器
@SpringBootApplication //开启spring配置
@EnableDubboConfiguration //开启Dobbu注解配置
@MapperScan(basePackages = "com.javawebs.springboot_014.mapper") //开启扫描mapper接口的包和子包 总的
//@EnableTransactionManagement //可选项 加不加事物都生效
public class Springboot014Application {
public static void main(String[] args) {
SpringApplication.run(Springboot014Application.class, args);
}
}
