Name for argument of type [java.lang.String] not specified, and parameter name information not avail

原因

没有显示地指定参数名称

    @GetMapping("/hello/{name}")
    public String hello(@PathVariable String name) {
        return helloService.sayHello(name);
    }

改为下面格式即可

    @GetMapping("/hello/{name}")
    public String hello(@PathVariable("name")String name) {
        return helloService.sayHello(name);
    }

或者添加maven插件

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>3.11.0</version> <!-- Replace with the version you need -->
    <configuration>
        <compilerArgs>
            <arg>-parameters</arg>
        </compilerArgs>
    </configuration>
</plugin>