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# 配置说明
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# application.xml 配置:
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## application.xml 配置:
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```xml
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<!--
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文件说明:
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</application>
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```
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# source.properties 配置:
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## source.properties 配置:
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```properties
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# CacheSource @Resource(name="usersession")
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redkale.datasource.platf.write.password = 12345678
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```
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# logging.properties 配置:
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## logging.properties 配置:
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```properties
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handlers = java.util.logging.ConsoleHandler,java.util.logging.FileHandler
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     3、Service类被标记```@Component``` <br>
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  Redkale进程启动时扫描可加载的Service实现类,根据配置文件配置的模式采用```ASM```技术动态生成相应的Service临时类进行实例化,并注册到ResourceFactory同其他Service、Servlet依赖注入。
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## Service使用类型
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|类型|使用注解|场景说明|
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| --- | --- | --- |
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|默认加载|```@AutoLoad```或无注解|默认的Service会自动加载并初始化,且会自动生成对应协议层Servlet|
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|依赖加载|```@AutoLoad(false)```|此类Service只有被其他服务依赖或者显式的配置时才会被初始化,主要用于工具类功能服务, 比如```DataSource```、```CacheSource```|
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|本地模式|```@Local```|此类Service无论配不配成远程模式,都不会转成远程模式,主要用于功能依赖本地环境或者参数无法序列化的服务|
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|组件模式|```@Component```|此类Service不会被动态生成协议层Servlet,主要用于无需提供对进程外提供接口的服务, 比如```DataSource```、```CacheSource```的实现|
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# 基本用法
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```java
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@RestService(comment = "用户服务模块")
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public class UserService implements Service {
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@Resource(name = "platf")
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private DataSource source;
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@RestMapping(auth = true, comment = "更改密码")
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public RetResult<String> updatePwd(@RestUserid long userid, UserPwdBean bean) {
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//逻辑处理
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return RetResult.success();
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}
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@RestMapping(auth = true, comment = "更新用户介绍")
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public RetResult<String> updateIntro(@RestUserid long userid, String intro) {
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intro = Utility.orElse(intro, ""); //为null则用""
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//更新数据库
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source.updateColumn(UserDetail.class, userid, UserDetail::getIntro, intro);
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return RetResult.success();
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}
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@RestMapping(auth = true, comment = "修改用户性别(异步方法)")
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public CompletableFuture<RetResult<String>> updateGender(@RestUserid long userid, short gender) {
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if (gender != GENDER_MALE && gender != GENDER_FEMALE) {
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return RetCodes.retResultFuture(RET_USER_GENDER_ILLEGAL);
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}
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//更新数据库
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return source.updateColumnAsync(UserDetail.class, userid, UserDetail::getGender, gender)
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.thenApply(v -> RetResult.success());
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}
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}
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```
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  ```@RestUserid int userid```为当前用户Id, 值是在BaseServlet里进行设置,userid可以是String、long、int类型。
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## 远程模式Service
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  远程Servie其实是提供RPC接口,需要配置文件中显式配置才可使用远程模式。
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```xml
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<group name="remote-A">
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<node addr="192.168.10.111" port="7070"/>
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<node addr="192.168.10.112" port="7070"/>
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</group>
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<server protocol="HTTP" host="0.0.0.0" port="8080">
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<services autoload="true" group="remote-A"/>
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<service name="" value="org.redkale.demo.user.UserService" group="remote-A"/>
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</server>
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```
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