如何使用Spring rest调用URL？

Question

我正在使用spring rest示例代码。我想从代码中调用URL。我对Rest和Spring不熟悉。这是我的控制器

 @RestController
public class EmployeeRESTController 
{
    @RequestMapping(value = "/employees")
    public @ResponseBody EmployeeListVO getAllEmployees() 
    {
        EmployeeListVO employees = new EmployeeListVO();

        EmployeeVO empOne = new EmployeeVO(1,"Lokesh","Gupta","[e-mail]");
        EmployeeVO empTwo = new EmployeeVO(2,"Amit","Singhal","[e-mail]");
        EmployeeVO empThree = new EmployeeVO(3,"Kirti","Mishra","[e-mail]");


        employees.getEmployees().add(empOne);
        employees.getEmployees().add(empTwo);
        employees.getEmployees().add(empThree);

        return employees;
    }

    @RequestMapping(value = "/employees/{id}")
    @ResponseBody
    public ResponseEntity<EmployeeVO> getEmployeeById (@PathVariable("id") int id) 
    {
        if (id <= 3) {
            EmployeeVO employee = new EmployeeVO(1,"Lokesh","Gupta","[e-mail]");
            return new ResponseEntity<EmployeeVO>(employee, HttpStatus.OK);
        }
        return new ResponseEntity(HttpStatus.NOT_FOUND);
    }
}

有模型课

    @XmlRootElement (name="employees")
public class EmployeeListVO
{
    private List<EmployeeVO> employees = new ArrayList<EmployeeVO>();

    public List<EmployeeVO> getEmployees() {
        return employees;
    }

    public void setEmployees(List<EmployeeVO> employees) {
        this.employees = employees;
    }
}

    @XmlRootElement (name = "employee")
@XmlAccessorType(XmlAccessType.NONE)
public class EmployeeVO implements Serializable
{
    private static final long serialVersionUID = 1L;

    @XmlAttribute
    private Integer id;

    @XmlElement
    private String firstName;

    @XmlElement
    private String lastName;

    @XmlElement
    private String email;

    public EmployeeVO(Integer id, String firstName, String lastName, String email) {
        super();
        this.id = id;
        this.firstName = firstName;
        this.lastName = lastName;
        this.email = email;
    }

    public EmployeeVO(){

    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    @Override
    public String toString() {
        return "EmployeeVO [id=" + id + ", firstName=" + firstName
                + ", lastName=" + lastName + ", email=" + email + "]";
    }
}

当我调用url时localhost:8080/springrestexample/employees/出现了一些数据。现在我想修改这段代码。如果我调用上面的url，我想将页面重定向到另一个URL，如https://cp.lk/index.php/cbs/sms/send?

Answer 1

这里有许多解决方案：从Spring MVC中的控制器操作重定向到外部URL

例如，使用RedirectView

在您的用例中：

@RequestMapping(value = "/employees")
public RedirectView redirect() 
{
    return new RedirectView("https://cp.lk/index.php/cbs/sms/send");
}

Answer 2

@RestController
public class URLController {

  @RequestMapping("/foo")
  void urlFoo(HttpServletResponse response) throws IOException {
    response.sendRedirect("some-url");
  }

}