使用@Document进行mongodb多语言拼写 [英] mongodb multi tenacy spel with @Document

问题描述

这与@ bocument中的
MongoDB和SpEL表达式有关注释

This is related to MongoDB and SpEL Expressions in @Document annotations

这是我创建mongo模板的方式

This is the way I am creating my mongo template

@Bean
public MongoDbFactory mongoDbFactory() throws UnknownHostException {
    String dbname = getCustid();
    return new SimpleMongoDbFactory(new MongoClient("localhost"), "mydb");
}

@Bean
MongoTemplate mongoTemplate() throws UnknownHostException {
    MappingMongoConverter converter = 
            new MappingMongoConverter(mongoDbFactory(), new MongoMappingContext());
    return new MongoTemplate(mongoDbFactory(), converter);
}

我有租户提供商类

@Component("tenantProvider")
public class TenantProvider {

    public String getTenantId() {
      --custome Thread local logic for getting a name
    }
}

我的域类

    @Document(collection = "#{@tenantProvider.getTenantId()}_device")
     public class Device {
    -- my fields here
    }

如你所见我创造了我的mongotemplate在帖子中指定，但我仍然得到以下错误

As you see I have created my mongotemplate as specified in the post, but I still get the below error

线程mainorg.springframework.expression.spel中的异常。 SpelEvaluationException：EL1057E：（pos 1）：没有在上下文中注册的bean解析器来解析对bean'tenantProvider'的访问

Exception in thread "main" org.springframework.expression.spel.SpelEvaluationException: EL1057E:(pos 1): No bean resolver registered in the context to resolve access to bean 'tenantProvider'

我是什么做错了吗？

推荐答案

最后图为什么我会遇到这个问题。

Finally figured out why i was getting this issue.

使用Servlet 3初始化时，请确保将应用程序上下文添加到mongo上下文中，如下所示

When using Servlet 3 initialization make sure that you add the application context to the mongo context as follows

    @Autowired
private ApplicationContext appContext;

public MongoDbFactory mongoDbFactory() throws UnknownHostException {
    return new SimpleMongoDbFactory(new MongoClient("localhost"), "apollo-mongodb");
}

@Bean
MongoTemplate mongoTemplate() throws UnknownHostException {
    final MongoDbFactory factory = mongoDbFactory();

    final MongoMappingContext mongoMappingContext = new MongoMappingContext();
    mongoMappingContext.setApplicationContext(appContext);

    // Learned from web, prevents Spring from including the _class attribute
    final MappingMongoConverter converter = new MappingMongoConverter(factory, mongoMappingContext);
    converter.setTypeMapper(new DefaultMongoTypeMapper(null));

    return new MongoTemplate(factory, converter);
}

检查上下文的自动装配以及
mongoMappingContext .setApplicationContext（appContext）;

Check the autowiring of the context and also mongoMappingContext.setApplicationContext(appContext);

通过这两行，我能够正确连接组件，以便在多租户模式下使用它

With these two lines i was able to get the component wired correctly to use it in multi tenant mode

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