public class AnnotationDemo {
    //@Test注解修飾方法A
    @Test
    public static void A(){
        System.out.println("Test.....");
    }

    //一個(gè)方法上可以擁有多個(gè)不同的注解
    @Deprecated
    @SuppressWarnings("uncheck")
    public static void B(){

    }
}

    @SuppressWarnings({"unchecked","deprecation"})
    public void test1() {
    }

@Target(ElementType.TYPE)
public @interface Table {
    /**
     * 數(shù)據(jù)表名稱注解，默認(rèn)值為類名稱
     * @return
     */
    public String tableName() default "className";
}

@Target(ElementType.FIELD)
public @interface NoDBColumn {
}

@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
public @interface Column {
    public String name() default "fieldName";
    public String setFuncName() default "setField";
    public String getFuncName() default "getField";
    public boolean defaultDBValue() default false;
}

@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@interface Reference{
    boolean next() default false;
}

public @interface AnnotationElementDemo {
    //枚舉類型
    enum Status {FIXED,NORMAL};

    //聲明枚舉
    Status status() default Status.FIXED;

    //布爾類型
    boolean showSupport() default false;

    //String類型
    String name()default "";

    //class類型
    Class<?> testCase() default Void.class;

    //注解嵌套
    Reference reference() default @Reference(next=true);

    //數(shù)組類型
    long[] value();
}

@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.METHOD})
public @interface Test {

    /**
     * Default empty exception
     */
    static class None extends Throwable {
        private static final long serialVersionUID = 1L;

        private None() {
        }
    }

    Class<? extends Throwable> expected() default None.class;

    long timeout() default 0L;
}

import java.lang.annotation.*;
import static java.lang.annotation.ElementType.*;

@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target(value={CONSTRUCTOR, FIELD, LOCAL_VARIABLE, METHOD, PACKAGE, PARAMETER, TYPE})
public @interface Deprecated {
}

/**
 * @author pangzi
 * @version V1.0
 * @Description log4j多線程日志輸出注解
 *    使用該注解的方法，其運(yùn)行日志除了在正常的log文件中輸出外。
 *    還會(huì)在 thread目錄下 job:uuid-YYYYMMDD.log 文件中輸出。
 * @date 2019-11-02 16:34
 */
@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface LogTreadAnnotation {
}

/**
 * @author pangzi
 * @version V1.0
 * @Description 用于aop類中當(dāng)作切入點(diǎn)來(lái)選擇數(shù)據(jù)源
 * @date 2019-06-03 14:43
 */
@Target({ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface DataSource {
    DataSourceEnum value() default DataSourceEnum.MYSQL;
}

/***********注解聲明***************/
/**
 * 水果名稱注解
 * @author peida
 *
 */
@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface FruitName {
    String value() default "";
}
/**
 * 水果顏色注解
 * @author peida
 *
 */
@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface FruitColor {
    /**
     * 顏色枚舉
     * @author peida
     *
     */
    public enum Color{ BULE,RED,GREEN};
    /**
     * 顏色屬性
     * @return
     */
    Color fruitColor() default Color.GREEN;
}

/**
 * 水果供應(yīng)者注解
 * @author peida
 *
 */
@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface FruitProvider {
    /**
     * 供應(yīng)商編號(hào)
     * @return
     */
    public int id() default -1;
    /**
     * 供應(yīng)商名稱
     * @return
     */
    public String name() default "";
    /**
     * 供應(yīng)商地址
     * @return
     */
    public String address() default "";
}
/***********注解使用***************/
public class Apple {
    @FruitName("Apple")
    private String appleName;
    @FruitColor(fruitColor=Color.RED)
    private String appleColor;
    @FruitProvider(id=1,name="陜西紅富士集團(tuán)",address="陜西省西安市延安路89號(hào)紅富士大廈")
    private String appleProvider;
}
/***********注解處理器***************/
public class FruitInfoUtil {
    public static void getFruitInfo(Class</> clazz){

        String strFruitName=" 水果名稱：";
        String strFruitColor=" 水果顏色：";
        String strFruitProvicer="供應(yīng)商信息：";

        Field[] fields = clazz.getDeclaredFields();

        for(Field field :fields){
            if(field.isAnnotationPresent(FruitName.class)){
                FruitName fruitName = (FruitName) field.getAnnotation(FruitName.class);
                strFruitName=strFruitName+fruitName.value();
                System.out.println(strFruitName);
            }
            else if(field.isAnnotationPresent(FruitColor.class)){
                FruitColor fruitColor= (FruitColor) field.getAnnotation(FruitColor.class);
                strFruitColor=strFruitColor+fruitColor.fruitColor().toString();
                System.out.println(strFruitColor);
            }
            else if(field.isAnnotationPresent(FruitProvider.class)){
                FruitProvider fruitProvider= (FruitProvider) field.getAnnotation(FruitProvider.class);
                strFruitProvicer=" 供應(yīng)商編號(hào)："+fruitProvider.id()+" 供應(yīng)商名稱："+fruitProvider.name()+" 供應(yīng)商地址："+fruitProvider.address();
                System.out.println(strFruitProvicer);
            }
        }
    }
}
/***********輸出結(jié)果***************/
public class FruitRun {
    /**
     * @param args
     */
    public static void main(String[] args) {
        FruitInfoUtil.getFruitInfo(Apple.class);
    }
}

/**
 * @author pangzi
 * @version V1.0
 * @Description log4j多線程日志輸出注解
 *    使用該注解的方法，其運(yùn)行日志除了在正常的log文件中輸出外。
 *    還會(huì)在 thread目錄下 job:uuid-YYYYMMDD.log 文件中輸出。
 * @date 2019-11-02 16:34
 */
@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface LogTreadAnnotation {
}

/**
 * @author pangzi
 * @version V1.0
 * @Description log4j多線程日志控制切面
 * @date 2019-11-02 16:30
 */
@Component      //聲明組件
@Aspect         //聲明切面
@ComponentScan  //組件自動(dòng)掃描
@EnableAspectJAutoProxy //spring自動(dòng)切換JDK動(dòng)態(tài)代理和CGLIB
public class LogTreadRecordAspect {

    @Pointcut("@annotation(com.zznode.gum.task.core.aop.LogTreadAnnotation)")
    public void addLogTread(){}

    @Before("addLogTread()")
    public void beforeAdvide(){
        //TODO 操作日志@Before 方法執(zhí)行前
    }

    @After("addLogTread()")
    public void afterAdvide() {
        //TODO 操作日志@After 方法執(zhí)行后
    }

    @Around("addLogTread()")
    public void aroundAvide(ProceedingJoinPoint pjp) throws Throwable {
        //操作日志@Around 方法執(zhí)行前
        Object[] args = pjp.getArgs();
        if(args != null && args.length >1) {
           String jobId = args[0].toString();
           String uuid = args[1].toString();
           LogUtils.logThreadBegin(jobId+":"+uuid);
        }
        //方法執(zhí)行
        pjp.proceed();

        //操作日志@Around 方法執(zhí)行后
        LogUtils.logTreadEnd();
    }
}

/**
 * @author pangzi
 * @version V1.0
 * @Description Log4j2多線程輸出日志工具類
 * @date 2019-11-02 15:07
 */
public class LogUtils {

    /**
     * 開始日志輸出到指定線程
     * @param key
     */
    public static void logThreadBegin(String key) {
        ThreadContext.put("JobUUID",key);
    }

    /**
     * 結(jié)束日志輸出
     */
    public static void logTreadEnd() {
        ThreadContext.remove("JobUUID");
    }
}

/**
 * @author pangzi
 * @version V1.0
 * @Description 數(shù)據(jù)匯聚計(jì)算Controller
 * @date 2019-09-16 14:20
 */
@Slf4j
@RestController
@RequestMapping("/dataConverge")
@Api(value = "數(shù)據(jù)計(jì)算任務(wù)RESTFUL")
public class DataConvergeController {

    @Autowired
    private DataConvergeService dataConvergeService;

    @ApiOperation(value = "報(bào)表指標(biāo)天匯聚計(jì)算任務(wù)", notes = "報(bào)表指標(biāo)天匯聚計(jì)算任務(wù)")
    @GetMapping("/rptIndexDayConverge")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "jobId", value = "任務(wù)編號(hào)", required = true, dataType = "String", paramType = "query"),
            @ApiImplicitParam(name = "uuid", value = "任務(wù)實(shí)例編號(hào)", required = true, dataType = "String", paramType = "query")
    })
    @ResponseBody
    @LogTreadAnnotation
    protected Result<String> rptIndexDayConverge(@RequestParam(name="jobId") String  jobId,
                                                 @RequestParam(name="uuid") String  uuid) {
        dataConvergeServiceAh.rptIndexDayConverge(jobId,uuid);
        //返回處理中
        return new Result<>(EnumResult.EXECUTING.getIndex(), EnumResult.EXECUTING.getName());
    }

<?xml version="1.0" encoding="UTF-8"?>
<configuration status="WARN" monitorInterval="60">
    <Properties>
        <Property name="PATTERN">%d{DEFAULT} [%t] %-5p %c{1.}.%M %L - %msg%xEx%n</Property>
    </Properties>
    <appenders>
        <Console name="Console" target="SYSTEM_OUT">
            <ThresholdFilter level="info" onMatch="ACCEPT" onMismatch="DENY" />
            <PatternLayout pattern="${PATTERN}" />
        </Console>

        <RollingFile name="TRACE" fileName="${sys:app.log.home}/task-all.log" filePattern="${sys:app.log.home}/$${date:yyyy-MM}/task-all-%d{MM-dd-yyyy}-%i.log.gz">
            <ThresholdFilter level="trace" onMatch="ACCEPT" onMismatch="DENY" />
            <PatternLayout pattern="${PATTERN}" />
            <SizeBasedTriggeringPolicy size="20MB" />
        </RollingFile>

        <RollingFile name="DEBUG" fileName="${sys:app.log.home}/task-debug.log" filePattern="${sys:app.log.home}/$${date:yyyy-MM}/task-debug-%d{MM-dd-yyyy}-%i.log.gz">
            <ThresholdFilter level="debug" onMatch="ACCEPT" onMismatch="DENY" />
            <PatternLayout pattern="${PATTERN}" />
            <SizeBasedTriggeringPolicy size="20MB" />
        </RollingFile>

        <RollingFile name="INFO" fileName="${sys:app.log.home}/task-info.log" filePattern="${sys:app.log.home}/$${date:yyyy-MM}/task-info-%d{MM-dd-yyyy}-%i.log.gz">
            <ThresholdFilter level="info" onMatch="ACCEPT" onMismatch="DENY" />
            <PatternLayout pattern="${PATTERN}" />
            <SizeBasedTriggeringPolicy size="20MB" />
        </RollingFile>

        <RollingFile name="ERROR" fileName="${sys:app.log.home}/task-error.log" filePattern="${sys:app.log.home}/$${date:yyyy-MM}/task-error-%d{MM-dd-yyyy}-%i.log.gz">
            <ThresholdFilter level="error" onMatch="ACCEPT" onMismatch="DENY" />
            <PatternLayout pattern="${PATTERN}" />
            <SizeBasedTriggeringPolicy size="20MB" />
        </RollingFile>

        <Routing name="thread">
            <Routes pattern="$${ctx:JobUUID}">
                <Route>
                    <File name="File-${ctx:JobUUID}" fileName="${sys:app.log.home}/threads/${ctx:JobUUID}.log">
                        <ThresholdFilter level="debug" onMatch="ACCEPT" onMismatch="DENY" />
                        <PatternLayout pattern="${PATTERN}" />
                    </File>
                </Route>
            </Routes>
        </Routing>
    </appenders>

    <!--然后定義logger，只有定義了logger并引入的appender，appender才會(huì)生效 -->
    <loggers>
        <!--過(guò)濾掉spring和mybatis的一些無(wú)用的DEBUG信息 -->
        <logger name="org.springframework" level="INFO" />
        <logger name="org.mybatis" level="debug" />
        <logger name="springfox.documentation" level="ERROR" />
        <logger name="io.netty" level="INFO" />
        <logger name="org.apache" level="info" />
        <logger name="reactor.util" level="info" />
        <logger name="org.flowable" level="info" />
        <logger name="com.test" level="debug" />
        <logger name="io.lettuce" level="info" />
        <logger name="org.quartz" level="info" />
        <logger name="org.hibernate.validator" level="info" />

        <root level="trace">
            <appender-ref ref="Console" />
            <appender-ref ref="TRACE" />
            <appender-ref ref="DEBUG" />
            <appender-ref ref="INFO" />
            <appender-ref ref="ERROR" />
            <appender-ref ref="thread" />
        </root>
    </loggers>
</configuration>

@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface ColumnCommandOrder {
    /**
     * 默認(rèn)值處理順序
     * @return 序號(hào)
     */
    int valueOrder() default 99;

    /**
     * 檢查處理順序
     * @return 序號(hào)
     */
    int checkOrder() default 99;

    /**
     * 指定報(bào)文類型。
     * 只有指定的報(bào)文類型，才使用該Command
     * @return 報(bào)文類型數(shù)組
     */
    String[] telexType() default {AnalyseConstants.TELEX_TYPE_NOTAMNCR};
}

@Component
public class AnalyseServiceContext implements ApplicationContextAware {

    private static ApplicationContext applicationContext=null;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        AnalyseServiceContext.applicationContext = applicationContext;
    }

    public static <T> T getBean(String beanName) {
        return (T)applicationContext.getBean(beanName);
    }

    public static <T> T getBean(Class<T> clazz) {
        return applicationContext.getBean(clazz);
    }

    public static Map<String,Object> getBeanMap(Class<? extends Annotation> tClass) {
          return applicationContext.getBeansWithAnnotation(tClass);
    }

    public static <T> Map<String,T> getBeansOfType(Class<T> clazz) {
        return applicationContext.getBeansOfType(clazz);
    }
}

public class TelexBusinessCheckParserHandler implements ITelexParserHandler{
    @Override
    public void parserTelex(ITelexBusinessHandler businessHandler) {
        if (businessHandler.isErrorOut()) {
            return;
        }
        TreeMap<Integer, ITelexColumnParserCommand> commandTreeMap= Maps.newTreeMap();
        Map<String,Object> maps = AnalyseServiceContext.getBeanMap(ColumnCommandOrder.class);
        for (Map.Entry<String, Object> bean: maps.entrySet()) {
            Object obj = bean.getValue();
            ColumnCommandOrder annotation = obj.getClass().getAnnotation(ColumnCommandOrder.class);
            if (null!=annotation) {
                int order = annotation.checkOrder();
                commandTreeMap.put(order, (ITelexColumnParserCommand) obj);
            }
        }

        commandTreeMap.forEach((k,v)->{
            v.setBusinessHandler(businessHandler);
            if (log.isDebugEnabled()) {
                log.debug("業(yè)務(wù)規(guī)則判斷{},處理類{}",k,v.getClass().getSimpleName());
            }
            try {
                ColumnCommandOrder annotation = v.getClass().getAnnotation(ColumnCommandOrder.class);
                if (ArrayUtils.contains(annotation.telexType(),
                        businessHandler.getOutputType().getApplicationCode())) {
                    v.columnCheckHandler();
                }
            } catch (Exception e) {
                log.error("業(yè)務(wù)規(guī)則判斷{},處理類{},異常{}",k,v.getClass().getSimpleName(),e);
            }
        });
    }
}

@Slf4j
@Component
@ColumnCommandOrder(valueOrder = 12,checkOrder = 12)
public class ItemBParserCommand extends AbstractColunmParserCommand {
...
}

//Java8前無(wú)法這樣使用
@FilterPath("/web/update")
@FilterPath("/web/add")
public class A {}

@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
public @interface FilterPath {
    String [] value();
}

//使用
@FilterPath({"/update","/add"})
public class A { }

//使用Java8新增@Repeatable原注解
@Target({ElementType.TYPE,ElementType.FIELD,ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Repeatable(FilterPaths.class)//參數(shù)指明接收的注解class
public @interface FilterPath {
    String  value();
}

// 自定義一個(gè)包裝類FilterPaths注解用來(lái)放置一組具體的FilterPath注解
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@interface FilterPaths {
    FilterPath[] value();
}

// 使用案例新方法
@FilterPath("/web/update")
@FilterPath("/web/add")
class AA{ }

// 使用案例舊方法
@FilterPaths ({@FilterPath("/web/update"), @FilterPath("/web/add")}) 
class AA{ }

// 用于構(gòu)造函數(shù)，創(chuàng)建類實(shí)例
new@Interned MyObject();

// 用于強(qiáng)制類型轉(zhuǎn)換和instanceof檢查,注意這些注解中用于外部工具，它們不會(huì)對(duì)類型轉(zhuǎn)換或者instanceof的檢查行為帶來(lái)任何影響。
myString = (@NonNull String) str;
if(input instanceof @NonNull String)

// 用于父類或者接口
class Image implements @Rectangular Shape { }

// 用于指定異常
void monitorTemperature() throws @Critical TemperatureException { ... }

// 標(biāo)注在類型參數(shù)上
class D<@Parameter T> { }

@Target({ElementType.TYPE_PARAMETER, ElementType.TYPE_USE})
@interface MyAnnotation {}