从另一个调用Spring控制器

@Controller
public class CallerController {
    @Autowired
    private CalleeController calleeController;

    @RequestMapping("/call")
    public String callCallee() {
        // 调用被调用方的方法
        String result = calleeController.processRequest();
        // 处理结果
        // ...
        return "result";
    }
}

@Controller
public class CallerController {
    private CalleeController calleeController;

    @Autowired
    public CallerController(CalleeController calleeController) {
        this.calleeController = calleeController;
    }

    @RequestMapping("/call")
    public String callCallee() {
        // 调用被调用方的方法
        String result = calleeController.processRequest();
        // 处理结果
        // ...
        return "result";
    }
}

@Controller
public class CallerController {
    private CalleeService calleeService;

    @Autowired
    public CallerController(CalleeService calleeService) {
        this.calleeService = calleeService;
    }

    @RequestMapping("/call")
    public String callCallee() {
        // 调用被调用方的方法
        String result = calleeService.processRequest();
        // 处理结果
        // ...
        return "result";
    }
}

public interface CalleeService {
    String processRequest();
}

@Controller
public class CalleeController implements CalleeService {
    @Override
    public String processRequest() {
        // 处理请求
        // ...
        return "result";
    }
}