代码
首先创建一个接口和两个实现类：
1
2
| public interface ITestService {
}
|
1
2
3
4
5
6
7
|
@Component
@Order(-100)
public class TestServiceImpl implements ITestService {
}
|
1
2
3
4
5
6
7
8
9
10
11
| import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;
@Component
@Order(-2)
public class Test2ServiceImpl implements ITestService {
}
|
测试
下面将这两个实现类实例注入到集合中：
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
| import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.ActiveProfiles;
import java.util.List;
import java.util.Map;
import java.util.Set;
@ActiveProfiles("dev")
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
public class TestInvokeTest {
@Autowired
private List<ITestService> iTestServices;
@Autowired
private Set<ITestService> testServices;
@Autowired
private Map<String, ITestService> testServicesMap;
@Test
public void test() {
for (ITestService iTestService : iTestServices) {
System.out.println(iTestService.getClass().getName());
}
for (ITestService iTestService : testServices) {
System.out.println(iTestService.getClass().getName());
}
testServicesMap.forEach((key, value) -> {
System.out.println(key);
System.out.println(value.getClass().getName());
});
}
}
|
看到已经将两个实例注入到集合中了。
反复调整 @order 大小，测试发现只有List 才有顺序控制。map 无顺序，set 底层也是map ，故无顺序
