话不多说，直接上代码
编写策略接口类
代码语言：javascript
复制public interface DemoService {
void doQuery();
}
编写策略实现类
代码语言：javascript
复制@Service("test1")
@Slf4j
public class Test1ServiceImpl implements DemoService {
@Override
public void doQuery() {
// do something
}
}
代码语言：javascript
复制@Service("test2")
@Slf4j
public class Test2ServiceImpl implements DemoService {
@Override
public void doQuery() {
// do something
}
}
构建策略工厂, Service自动注入
代码语言：javascript
复制@Component
public class DemoStrategyFactory {
@Autowired
Map<String, DemoService> DemoServices = new ConcurrentHashMap<>();
public DemoService getDemoService(String component){
DemoService demoService = DemoServices.get(component);
if(demoService== null) {
throw new RuntimeException("策略模式没找到对应实现类");
}
return demoService;
}
}
Controller中直接使用
代码语言：javascript
复制@Autowired
private DemoStrategyFactory demoStrategyFactory;
@PostMapping("/test")
public void test(@Valid @RequestParam String functionId){
// eg: functionId = "test2"
DemoService demoService = demoStrategyFactory.getDemoService(functionId);
demoService.doQuery();
}
