我正在使用Spring Cloud。我的Sping Boot 应用程序中有四个服务college-service，student-service，eureka-server和api-gateway。我试图使用API Gateway调用college-service和student-service。当我从工作正常的API Gateway调用My college-service时，student-service不工作。当我试图获取student-serivice时，我得到错误404未找到。我是Spring Cloud的新人。下面是我的代码。

• 下面是我的网址，在最后一个网址我得到404*

| URL|地位|
| --|--|
| http：//localhost：9001/college/CLG01| 200 OK|
| http：//localhost：9002/college/student/CLG01| 200 OK|
| http：//localhost：9003/college/CLG01| 200 OK|
| http：//localhost：9003/college/student/CLG01| 400 Not Found|

学院服务

• 实体 *

public class College {
    private String clgId;
    private String clgName;
    private String clgCity;
    List<Student> students;
    public College(String clgId, String clgName, String clgCity, List<Student> students) {
        this.clgId = clgId;
        this.clgName = clgName;
        this.clgCity = clgCity;
        this.students = students;
    }
    public College(String clgId, String clgName, String clgCity) {
        this.clgId = clgId;
        this.clgName = clgName;
        this.clgCity = clgCity;
    }
   
    // getter and setter
}
public class Student {
    private Long stId;
    private String stName;
    private String stEmail;
    private String clgId;
    public Student(Long stId, String stName, String stEmail, String clgId) {
        super();
        this.stId = stId;
        this.stName = stName;
        this.stEmail = stEmail;
        this.clgId = clgId;
    }
    // getter and setter
}

字符串

• 学院管理员 *

@RestController
@RequestMapping("/college")
public class CollegeController {
    @Autowired
    private CollegeService collegeService;
    @Autowired
    private RestTemplate restTemplate;
    @RequestMapping(value = "/{clgId}", method = RequestMethod.GET)
    public ResponseEntity<College> getColleges(@PathVariable("clgId") String clgId) {
        College college = collegeService.getCollege(clgId);
        List student = restTemplate.getForObject("http://student-service/college/student/" + college.getClgId(),
                List.class);
        college.setStudents(student);
        return ResponseEntity.ok(college);
    }
}

型

• application.yml*

server:
  port: 9001
  
spring:
  application:
    name: college-service
    
eureka:
  instance:
    hostname: localhost

型

学生服务

• 学生控制器**实体 *

public class Student {
    private Long stId;
    private String stName;
    private String stEmail;
    private String clgId;
    public Student(Long stId, String stName, String stEmail, String clgId) {
        super();
        this.stId = stId;
        this.stName = stName;
        this.stEmail = stEmail;
        this.clgId = clgId;
    }
    // getter and setter
}

@RestController
@RequestMapping("/college")
public class StudentCotroller {
    @Autowired
    private StudentService studentService;
    @RequestMapping(value = "/student/{clgId}", method = RequestMethod.GET)
    public ResponseEntity<List<Student>> getStudents(@PathVariable("clgId") String clgId) {
        return ResponseEntity.ok(studentService.getStudents(clgId));
    }
}

• application.yml*

server:
  port: 9002
  
spring:
  application:
    name: student-service
    
eureka:
  instance:
    hostname: localhost

型

Eureka 服务器

• application.yml*

server:
  port: 8761
eureka:
  instance:
    hostname: localhost
  client:
    registerWithEureka: false
    fetchRegistry: false
  server:
    waitTimeInMsWhenSyncEmpty: 0

型

API网关服务

• application.yml*

server:
  port: 9003
  
eureka:
  instance:
    hostname: localhost
spring:
  application:
    name: api-gateway
  cloud:
    gateway:
      routes:
      - id: college-service
        uri: lb://college-service
        predicates:
        - Path=/college/**
      - id: student-service
        uri: lb://student-service
        predicates:
        - Path=/student/**

型