java - 导航器无法访问 RequestMapping

Question

我正在使用 Spring Boot，并尝试显示 get 请求。我正在使用 2 个类:Greeting.java 和 GreetingController:

    package greeting;

public class Greeting {

    private final long id;
    private final String content;

    public Greeting(long id, String content) {
        this.id = id;
        this.content = content;
    }

    public long getId() {
        return id;
    }

    public String getContent() {
        return content;
    }
}

我的 Controller 是 GreetingController.java :

public class GreetingController {

    private static final String template = "Hello ,%s!";
    private final AtomicLong counter  = new AtomicLong();

    @RequestMapping(value="/greeting",method = RequestMethod.GET)
    public Greeting greeting(@RequestParam(value = "name",defaultValue = "World")String name){
        return new Greeting(counter.incrementAndGet(),String.format(template,name));
    }
}

当我插入此网址(http://localhost:8080/greeting?name=gabriel)时，我在导航器上收到此错误:

  Whitelabel Error Page

This application has no explicit mapping for /error, so you are seeing this as a fallback.

Thu Mar 10 19:35:17 CET 2016
There was an unexpected error (type=Not Found, status=404).
No message available

我不明白为什么他找不到该页面。如果有人可以帮助我:)

谢谢

Answer 1

映射 /greeting 存在，但发生错误，导致重定向到尚未配置的位置 /error