能否将@Controller替换为@RestController，反之亦然，对应用有何影响。
最佳答案
简单来说，@Controller 是 Spring MVC 注释，在使用 @Controller 时，您需要为每个请求映射添加 @ResponseBody`
示例:
@Controller
@RequestMapping("employees")
public class EmployeeController {
Employee employee = new Employee();
@RequestMapping(value = "/{name}", method = RequestMethod.GET, produces = "application/json")
public @ResponseBody Employee getEmployeeInJSON(@PathVariable String name) {
employee.setName(name);
employee.setEmail("employee1@genuitec.com");
return employee;
}
@RequestMapping(value = "/{name}.xml", method = RequestMethod.GET, produces = "application/xml")
public @ResponseBody Employee getEmployeeInXML(@PathVariable String name) {
employee.setName(name);
employee.setEmail("employee1@genuitec.com");
return employee;
}
}
Spring 4.0引入了@RestController，这是 Controller 的一个特殊版本，它是一个方便的注释，除了添加@Controller和@ResponseBody 注释。通过使用@RestController注解来注解 Controller 类，您不再需要在所有请求映射方法中添加@ResponseBody。
示例:
@RestController
@RequestMapping("employees")
public class EmployeeController {
Employee employee = new Employee();
@RequestMapping(value = "/{name}", method = RequestMethod.GET, produces = "application/json")
public Employee getEmployeeInJSON(@PathVariable String name) {
employee.setName(name);
employee.setEmail("employee1@genuitec.com");
return employee;
}
@RequestMapping(value = "/{name}.xml", method = RequestMethod.GET, produces = "application/xml")
public Employee getEmployeeInXML(@PathVariable String name) {
employee.setName(name);
employee.setEmail("employee1@genuitec.com");
return employee;
}
}
所以最后的结论是，如果您想用 @Controller 替换 @RestController ，您需要显式地将 @ResponseBody 添加到所有请求映射中
关于java - spring中将@Controller替换为@RestController的效果，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/51583720/