如何在Android环境下支持Spring框架下得AOP,DI,Aspect等
大家都知道,Spring在JavaEE开发中扮演着非常重要的地位。
- 可以利用它的依赖注入(DI)很好的实现各个模块直接的解耦。
- 可以利用它的AOP很好的实现面向方面的编程,实现与事务无关的业务逻辑(事务代码写在切面中)
- 可以使用不同的注解(@Controller;@Service;@Repository)很好的实现分成架构, 表明各个模块的作用
- 可以用MVC实现的Controller很好的处理请求和响应客户端请求
- 可以轻松的使用集成其他第三方组件实现的功能等。
那这么好的功能,如何能在Android上使用呢,服务于Android开发者呢?
现在给大家推荐一个第三方库, 可以很方便的集成到您的应用里面,获取以上这些功能
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项目地址:https://github.com/hianzuo/android-spring
Introduction
Android-spring is a android library project support IOC , DI , AOP and HTTP/Handler , it use annotation to config 。 It contains a simple project.
Add the dependency
dependencies {
compile 'com.hianzuo.android:LibSpring:1.0.4'
}
Init spring from Application
public class SimpleApplication extends Application {
@Override
public void onCreate() {
super.onCreate();
//if in dev mode ,please line blow code
SpringInitializer.devMode();
//spring init, you can add more package to scan spring component.
SpringInitializer.init(this,
"com.hianzuo.spring.simple.test.",
"other package to scan spring component");
}
}
DI Support in Activity
public class MainActivity extends AppCompatActivity {
@Resource
private TestService testService;
@Resource
private PrintService printService;
@Resource(beanName = "testBean")
private BeanTest testBean;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
testService.handle();
setContentView(R.layout.activity_main);
TextView tv = findViewById(R.id.tv);
tv.setText(printService.print() + "\n\n" + testBean.getText());
}
}
Configuration Bean
@Component
@Configuration
public class TestConfiguration {
@Bean("testBean")
public BeanTest bean1() {
return new BeanTest("bean name in annotation");
}
@Bean
public BeanTest methodIsBeanName() {
return new BeanTest("method is bean name");
}
}
AOP
@Aspect
public class TestServiceAspect {
@Pointcut("^.*?handle\\(\\).*+$")
public void handle() {
System.out.println("AAA TestServiceAspect handle");
}
@Before("handle")
public void before(JointPoint point) {
System.out.println("AAA TestServiceAspect before");
}
@Around(value = "handle")
public Object around(JointPoint point) {
System.out.println("AAA TestServiceAspect around start");
Object result = point.invokeResult();
System.out.println("AAA TestServiceAspect around end");
return result;
}
@After(value = "handle")
public void after(JointPoint point) {
System.out.println("AAA TestServiceAspect after");
}
Service Annotation Support
@Service
public class TestServiceImpl implements TestService {
@Resource
private PrintService printService;
@Resource(beanName = "testBean")
private BeanTest testBean;
@Resource(beanName = "methodIsBeanName")
private BeanTest testBean1;
@Override
public void handle() {
printService.print();
System.out.println("AAA BeanTest :" + testBean.getText());
System.out.println("AAA BeanTest1 :" + testBean1.getText());
System.out.println("AAA TestService.handle.");
}
@Override
public void execute() {
System.out.println("AAA TestService.execute.");
}
}
Cache Support
@Component
public class DemoProviderImpl extends AbstractCacheAble {
@Override
protected Integer getKey(Demo demo) {
return demo.getId();
}
@Override
protected List loadData() {
//load Demo data from remote server or database
ArrayList list = new ArrayList<>();
list.add(new Demo(1, "aaa"));
list.add(new Demo(2, "bbb"));
return list;
}
}
Http Handler Support
@Handler("/api/login")
public class HttpLoginHandler extends BaseHandler {
@Override
protected Object getMethodParamObjectByType(Class> type) {
if(type == LoginData.class){
String username = (String) getMethodParamObject("username");
String password = (String) getMethodParamObject("password");
return new LoginData(username,password);
}
return super.getMethodParamObjectByType(type);
}
@Override
protected Object getMethodParamObject(String value) {
// get value from request.
// demo request.getParameter(value);
return null;
}
@CheckMethod
protected String check(@MethodParam("username") String username) {
if (StringUtil.isEmpty(username) || username.trim().length() < 4) {
throws new RuntimeException("用户名不能为空");
}
return null;
}
@Resource
private LoginService loginService;
//you can use @MethodParam Annotation to get parameter
/*@HandleMethod
public void handle(@MethodParam("username") String username, @MethodParam("password") String password) {
loginService.login(username, password);
}*/
//you can get DataModel in Method Param , register in (Object getMethodParamObjectByType(Class> type))
@HandleMethod
public void handle(LoginData data) {
loginService.login(data.getUsername(), data.getPassword());
}
}
Repository Annotation Support
@Repository like @Service Annotation for the Component.
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