Springboot3集成Web、RedisTemplate、Test和knife4j

本例将展示，如何在Springboot3中完成：

Redis功能的Web接口实现
构建Redis功能的单元测试
knife4j自动化生成文档

Redis功能

Pom.xml

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-data-redis</artifactId>
		</dependency>

application.yml

用于指定Redis的地址和端口信息

spring:
  data:
    redis:
      host: 127.0.0.1
      port: 6379

Redis操作代理文件

使用RedisTemplate自动化加载上述配置，然后借用它的方法完成Redis的操作。

// SetOperation.java
package org.example.redistemplateexample.redis;

import jakarta.annotation.Resource;

import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;

@Component
public class SetOperation {

    @Resource
    private RedisTemplate<String, String> redisTemplate;

    /**
     * Adds the specified members to the set stored at the given key.
     *
     * @param key    the key of the set
     * @param values the members to be added to the set
     * @return the number of elements that were added to the set
     */
    public Long SAdd(String key, String... values) {
        return redisTemplate.opsForSet().add(key, values);
    }
    ……
}

Redis单元测试

Pom.xml

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>

测试文件

package org.example.redistemplateexample.redis;

import java.util.ArrayList;
import java.util.List;
import java.util.Set;

import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.util.Pair;

import static org.junit.jupiter.api.Assertions.*;

@SpringBootTest
public class SetOperationTest {

    @Autowired
    private SetOperation setOperation;

    @Test
    public void testSAdd() {
        Pair<String, ArrayList<String>> pair = KeyGenerator.generateSetString("testSAdd", 3);
        final String key = pair.getFirst();
        final ArrayList<String> values = pair.getSecond();

        assertEquals(3, setOperation.SAdd(key, values.toArray(new String[0])));
    }
    ……
}

KeyGenerator是我用于生成测试数据的工具类

package org.example.redistemplateexample.redis;

import org.springframework.data.util.Pair;

import java.util.ArrayList;

public class KeyGenerator {
    public static Pair<String, ArrayList<String>> generateSetString(String biz, int count) {
        long currentTime = System.currentTimeMillis();
        String key = STR."\{biz}_key_\{currentTime}";
        ArrayList<String> list = new ArrayList<>();
        for (int i = 0; i < count; i++) {
            list.add(STR."\{biz}_value_\{i}");
        }
        return Pair.of(key, list);
    }
}

在这里插入图片描述

Web接口

Pom.xml

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>

application.properties

spring.application.name=RedisTemplateExample
server.port=8080

Controller

package org.example.redistemplateexample.controller;

import org.example.redistemplateexample.redis.SetOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.Arrays;
import java.util.ArrayList;

@RestController
@RequestMapping("/set_operation")
public class SetOperationController {

    @Autowired
    private SetOperation setOperation;

    @PostMapping("/sadd")
    public Long sadd(String key, String values) {
        ArrayList<String> valuesList = new ArrayList<String>(Arrays.asList(values.split(",")));
        return setOperation.SAdd(key, valuesList.toArray(new String[0]));
    }
    ……
}

自动化生成文档

我们使用knife4j

Pom.xml

		<dependency>
			<groupId>com.github.xiaoymin</groupId>
			<artifactId>knife4j-openapi3-jakarta-spring-boot-starter</artifactId>
			<version>4.5.0</version>
		</dependency>

application.yml

springdoc:
  swagger-ui:
    path: /swagger-ui.html
    tags-sorter: alpha
    operations-sorter: alpha
  api-docs:
    path: /v3/api-docs
  group-configs:
    - group: 'Controller'
      paths-to-match: '/**'
      packages-to-scan: org.example.redistemplateexample.controller

knife4j:
  enable: true
  setting:
    language: zh_cn

packages-to-scan是我们让knife4j搜索的包名

对Controller的修改

controller可以不修改，但是可以增加部分信息，让knife4j看起来更美观。

//
// add for knife4j.非必须
@Tag(name = "SetOperationController")
//
@RestController
@RequestMapping("/set_operation")
public class SetOperationController {

    @Autowired
    private SetOperation setOperation;
//
    // add for knife4j.非必须
    @Operation(summary = "Add members to a set")
    @Parameters({
            @Parameter(name = "key", description = "Key"),
            @Parameter(name = "values", description = "Values. Multiple values should be separated by commas. Example: \"1\", \"2\", \"3\"")
    })
//    
    @PostMapping("/sadd")
    public Long sadd(String key, String values) {
        ArrayList<String> valuesList = new ArrayList<String>(Arrays.asList(values.split(",")));
        return setOperation.SAdd(key, valuesList.toArray(new String[0]));
    }

然后我们在http://127.0.0.1:8080/doc.html就可以看到各个接口的文档。
在这里插入图片描述

题外

由于我们使用的是Java22，会使用到一些新特性，在Vscode中编译时会报如下错误。

String Template is a preview feature and disabled by default. Use --enable-preview to enable

我们只需要在Pom.xml中加入如下内容，即可解决（重启Vscode）

			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>3.13.0</version>
				<configuration>
					<release>22</release>
					<compilerArgs>
						<arg>--enable-preview</arg>
					</compilerArgs>
				</configuration>
			</plugin>