Spring @Bean 标签
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
@Bean
public TestA testA() {
return new TestA();
}
for (int i = 0; i < 5; i++) {
System.err.println(testA().toString());
}
@Component
public class TestCommder implements CommandLineRunner {
@Autowired
TestA testA;
@Override
public void run(String... arg0) throws Exception {
System.err.println("auto wired..." + testA.toString());
}
}
|
A: 你这样反复调用testA()方法会产生很多对象，巴拉巴拉…你这样不对，快改。
B:一脸啊懵逼….
1
2
3
4
5
6
7
8
| 输出结果：
com.igaming.extmail.TestA@407cf41
com.igaming.extmail.TestA@407cf41
com.igaming.extmail.TestA@407cf41
com.igaming.extmail.TestA@407cf41
com.igaming.extmail.TestA@407cf41
auto wired...com.igaming.extmail.TestA@407cf41
|
老子说：夫为不争，故无忧。博君一笑！！！