** Learn from the station b springcloud project, now summarize the summary removal of a small error appearing in the video, some of the error-prone places were reminded
b outbound links: https://www.bilibili.com/video/av55629580?p=1
profile link:
https://pan.baidu.com/s/1o0Aju3IydKA15Vo1pP4z5w
extraction code: 21ru
On a link:
https://blog.csdn.net/qq_40893824/article/details/103609138
next section link:
https://blog.csdn.net/qq_40893824/article/details/103618769
The following list summarizes:
Module1 (User) → ConfigServer / New Shared bootstrap.yml → → dev.yml-User
com.southwind.UserApplication.java → → inspection controler.UserHandler.java
user/entity/User.java→repository/UserRepository.java→resources/mapping/MenuRepository.xml→UserHandler.java→检查
By the user, delete, check the operation
implementation details:
1. Create a new module named user, as their pom file to add the code and menu!
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
<version>2.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-config</artifactId>
<version>2.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.11</version>
</dependency>
</dependencies>
2. Allocation: Re copy menu-dev.yml in confiserver / resources / shared but was renamed in user-dev.yml, and modify the port to 8040, name for the user, the other unchanged:
server:
port: 8040
spring:
application:
name: user
datasource:
name: qwe
url: jdbc:mysql://localhost:3306/qwe?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
username: root
password: 123456
driver-class-name: com.mysql.cj.jdbc.Driver
eureka:
client:
service-url:
defaultZone: http://localhost:8761/eureka/
instance:
prefer-ip-address: true
mybatis:
mapper-locations: classpath:/mapping/*.xml
type-aliases-package: com.southwind.entity
# 这个mybatis是在menu - resources - mapping写好后加的。
3.user read configserver copy the configuration menu / resources bootstrap.yml to the user / resources, change the name of user:
spring:
application:
name: user
profiles:
active: dev
cloud:
config:
uri: http://localhost:8762
fail-fast: true
4. In the user / java package record in com.southwind, start a new class southwind the UserApplication.java tagging:
package com.southwind;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
@MapperScan("com.southwind.repository")
public class UserApplication {
public static void main(String[] args) {
SpringApplication.run(UserApplication.class,args);
}
}
5. record the user / southwind Controller of packets, the new controller UserHandler.java inside, tagging:
package com.southwind.controller;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping("/user")
public class UserHandler {
@Value("${server.port}")
private String port;
@GetMapping("/index")
public String index(){
return "当前端口："+this.port;
}
}
6. Restart configserver start to check whether the user interface can be adjusted through: Go to http: // localhost: 8761
and then enter http: // localhost: 8040 / user / index
description can be adjusted through!
Interface for data:
7. In user / southwind create the package entity, the entity class created User.java, tagging:
package com.southwind.entity;
import lombok.Data;
@Data
public class User {
private long id;
private String username;
private String password;
private String nickname;
private String gender;
private String telephone;
private Date registerdate;
private String address;
}
Registerdate which is the date of registration, so you can see its type:
facing t_user Right-click
can see registerdate type is a Date
8. In southwind in the Year of the package repository, in which new interfaces UserRepository.java, adding the code:
package com.southwind.repository;
import com.southwind.entity.User;
import java.util.List;
public interface UserRepository {
/*增*/
public void save(User user);
/*删*/
public void deleteById(long id);
/*查*/
public List<User>findAll(int index ,int limit);
public User findById(long id);
/*改*/
public void update(User user);
/*计数*/
public int count();
}
9. In the user / resources in the package record mapping, the copy menu / mapping of MenuRepository.xml to User / mapping, the renamed and UserRepository.xml, modify the code:
the third line MenuRepository UserRepository to
delete rows 5-11 <resultMap>
the findById resultMap now in line 13 and 5 findAll row = "menuMap" to resultType = "User"
of the next row and all subsequent t_menu to T_USER
. 17 and 21 modify the save and update the line, corresponding to the user attributes
<?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.southwind.repository.UserRepository">
<select id="findAll" resultType="User">
select * from t_user limit #{param1},#{param2}
</select>
<select id="count" resultType="int">
select count(id) from t_user
</select>
<select id="findById" parameterType="long" resultType="User">
select * from t_user where id = #{id}
</select>
<insert id="save" parameterType="User">
insert into t_user(username,password,nickname,gender,telephone,registerdate,address) values(#{username},#{password},#{nickname},#{gender},#{telephone},#{registerdate},#{address})
</insert>
<update id="update" parameterType="User">
update t_user set username = #{username},password = #{password},nickname = #{nickname}, gender=#{gender},telephone = #{telephone},registerdate = #{registerdate},address=#{address} where id = #{id}
</update>
<delete id="deleteById" parameterType="long">
delete from t_user where id = #{id}
</delete>
</mapper>
10. Now to user / UserHandler modify the code:
delete port code
then added Code:
package com.southwind.controller;
import com.southwind.entity.User;
import com.southwind.repository.UserRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import java.util.List;
@RestController
@RequestMapping("/user")
public class UserHandler {
@Autowired
private UserRepository userRepository;
/*增*/
@PostMapping("/save")
public void save(@RequestBody User user){
userRepository.save(user);
}
@PutMapping("/update")
public void update(@RequestBody User user){
userRepository.update(user);
}
/*删*/
@DeleteMapping("/deleteById/{id}")
public void deleteById(@PathVariable("id")long id){
userRepository.deleteById(id);
}
/*查*/
@GetMapping("/findAll/{index}/{limit}")
public List<User>findAll(@PathVariable("index") int index ,@PathVariable("limit") int limit){
return userRepository.findAll(index, limit);
}
@GetMapping("/findById/{id}")
public User findById(@PathVariable("id")long id){
return userRepository.findById(id);
}
@GetMapping("/count")
public int count(){
return userRepository.count();
}
}
11. Check: Start the User
. A Open the postman, enter the HTTP GET: // localhost: 8040 / the User / findAll / 0/10
findAll call success!
. b enter the HTTP GET: // localhost: 8040 / the User / findById / 2
findById call success!
c into the HTTP GET:. // localhost: 8040 / the User / COUNT
COUNT success!
d into the post http:. // localhost: 8040 / user / save
enter get http: // localhost: 8040 / user / findAll / 0/10
successfully added!
e enters put http:. // localhost: 8040 / user / update
into the get http: // localhost: 8040 / user / findAll / 0/10
updated successfully!
f enter delete http:. // localhost: 8040 / user / deleteById / 6
re-entering the get http: // localhost: 8040 / user / findAll / 0/10
deleted successfully!
Such user function is realized!
On a link:
https://blog.csdn.net/qq_40893824/article/details/103609138
next section link:
https://blog.csdn.net/qq_40893824/article/details/103618769
