Question

调用下面的第一个Request map（// 1）函数并返回响应。（暂时没有，数据库中没有数据。

第二个映射如下（path = testnow）与不同的映射完全相同，但返回404？为什么？

package io.egen.rest.controller;

    import java.util.List;

    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.http.MediaType;
    import org.springframework.web.bind.annotation.PathVariable;
    import org.springframework.web.bind.annotation.RequestBody;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestMethod;
    import org.springframework.web.bind.annotation.RestController;

    import io.egen.rest.entity.Movie;
    import io.egen.rest.service.MovieService;

    @RestController
    @RequestMapping(path = "movies")
    public class MovieController {

        @Autowired
        MovieService service;

        //1
        @RequestMapping(method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
        public List<Movie> findAll() {
            return service.findAll();
        }

        @RequestMapping(method = RequestMethod.GET, path = "testnow", produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
        public List<Movie> testUrlNow() {
            return service.findAll();
        }

        @RequestMapping(method = RequestMethod.GET, path = "{id}", produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
        public Movie findOne(@PathVariable("id") String movieId) {
            return service.findOne(movieId);
        }

        @RequestMapping(method = RequestMethod.POST, produces = MediaType.APPLICATION_JSON_UTF8_VALUE, consumes = MediaType.APPLICATION_JSON_UTF8_VALUE)
        public Movie create(@RequestBody Movie movie) {
            return service.create(movie);
        }

        @RequestMapping(method = RequestMethod.PUT, path = "{id}", produces = MediaType.APPLICATION_JSON_UTF8_VALUE, consumes = MediaType.APPLICATION_JSON_UTF8_VALUE)
        public Movie update(@PathVariable("id") String empId, @RequestBody Movie emp) {
            return service.update(empId, emp);
        }

        @RequestMapping(method = RequestMethod.DELETE, path = "{id}")
        public void delete(@PathVariable("id") String empId) {
            service.delete(empId);
        }
    }

Answer 1

如果您正在访问此/movies/testnow之类的testnow端点，那么路径应更改如下。

@RequestMapping(method = RequestMethod.GET, path = "/testnow", produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
public List<Movie> testUrlNow() {
    return service.findAll();
}

如果不是，则必须将testnow端点称为/moviestestnow

Answer 2

我不确定它是否有所作为，但我查看了我的旧项目的一些例子，它已经

@RequestMapping(value = "/application")
public class ApplicationController {

...


@RequestMapping(value = "/{id}", method = RequestMethod.GET) {
....
}


}

注意注释参数是＆＃34;值＆＃34;而不是＆＃34;路径＆＃34; ..

Answer 3

OKAY！你不会相信这个！

重启Eclipse解决了这个问题！我现在可以打两个网址了！

（可能是缓存/项目清理/服务器清理/缓存实体映射等问题）

这可能是一种陈词滥调，但有时候“把它转过来再把它重新打开”它绝对有效！

感谢大家的帮助，真的很感激。

我知道这是一个愚蠢的帖子。但也许像我这样的人会从中受益！所以我要让这个问题熬夜/。

Answer 4

@Autowired
    MovieService service;

    //1
    @RequestMapping(method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
    @ResponseBody
    public List<Movie> findAll() {
        return service.findAll();
    }

    @RequestMapping(method = RequestMethod.GET, path = "/testnow", produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
    @ResponseBody
    public List<Movie> testUrlNow() {
        return service.findAll();
    }

    @RequestMapping(method = RequestMethod.GET, path = "/{id}", produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
    @ResponseBody
    public Movie findOne(@PathVariable("id") String movieId) {
        return service.findOne(movieId);
    }

    @RequestMapping(method = RequestMethod.POST, produces = MediaType.APPLICATION_JSON_UTF8_VALUE, consumes = MediaType.APPLICATION_JSON_UTF8_VALUE)
    @ResponseBody
    public Movie create(@RequestBody Movie movie) {
        return service.create(movie);
    }

    @RequestMapping(method = RequestMethod.PUT, path = "/{id}", produces = MediaType.APPLICATION_JSON_UTF8_VALUE, consumes = MediaType.APPLICATION_JSON_UTF8_VALUE)
    public Movie update(@PathVariable("id") String empId, @RequestBody Movie emp) {
        return service.update(empId, emp);
    }

    @RequestMapping(method = RequestMethod.DELETE, path = "/{id}")
    public void delete(@PathVariable("id") String empId) {
        service.delete(empId);
    }

试试这种方式。

我们没有建议返回类型等于void，您可以将状态类型返回到页面，以确保操作成功与否

Spring MVC中的请求映射。相同/相同的功能，只是不同的映射，失败

4 个答案: