基础测试应用

为了方便起见，我们把要测试的项目和相关的沙箱项目放在同一个大项目中，要测试的项目只是其中的一个小模块，整体代码如下
整体pom文件

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.6.4</version>
    <relativePath/>
  </parent>
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.deer</groupId>
  <artifactId>jvm_sandbox_demo</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>pom</packaging>
  <name>jvm_sandbox_demo</name>
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
  </properties>
  <modules>
    <module>jvm_sandbox_base_app</module>
  </modules>
  <dependencyManagement>
    <dependencies>
      <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.11</version>
        <scope>test</scope>
      </dependency>
      <dependency>
        <groupId>com.deer.base</groupId>
        <artifactId>jvm_sandbox_base_app</artifactId>
        <version>${project.version}</version>
      </dependency>
    </dependencies>
  </dependencyManagement>
</project>

测试应用的pom如下

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>jvm_sandbox_demo</artifactId>
        <groupId>com.deer</groupId>
        <version>1.0-SNAPSHOT</version>
        <relativePath>../pom.xml</relativePath>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.deer.base</groupId>
    <artifactId>jvm_sandbox_base_app</artifactId>
    <name>jvm_sandbox_base_app</name>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <configuration>
                    <skipTests>true</skipTests>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

代码入口

package com.deer.base;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class BaseApp {
    public static void main(String[] args) {
        SpringApplication.run(BaseApp.class, args);
    }
}

web入口

package com.deer.base.controller;
import com.deer.base.service.HelloService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class HelloController {
    @Autowired
    private HelloService helloService;
    @RequestMapping("/sayHi/{userName}")
    public String sayHello(@PathVariable(name ="userName") String userName) {
        return helloService.sayHello(userName);
    }
}

业务代码实现类

package com.deer.base.service;
public interface HelloService {
    String sayHello(String userName);
}

package com.deer.base.service.impl;
import com.deer.base.service.HelloService;
import org.springframework.stereotype.Service;
import java.util.concurrent.atomic.AtomicLong;
@Service
public class HelloServiceImpl implements HelloService {
    private AtomicLong seq = new AtomicLong(1L);
    @Override
    public String sayHello(String userName) {
        return "hello ," + userName + ",seq = " + seq.incrementAndGet();
    }
}

现在启动应用访问

http://localhost:9090/sayHi/zhangfei

返回结果

hello ,zhangfei,seq = 2

目标

如果多次访问这个接口，我们会发现这个seq是不断递增的，我们想要把这个请求记录下来，可以参考java通用的apm工具，skywalking，如果相同的trace ID，无论多少次访问，我们的返回结果不变。