spring4 註解方式集成mongoDB

@EnableMongoRepositories 開啓mongo

mongo的最簡單配置

@Configuration
@EnableMongoRepositories(basePackages = "spittr.mongo")
public class MongoConfig extends AbstractMongoConfiguration {

    @Autowired
    private Environment env;

    @Override
    protected String getDatabaseName() {
        return env.getProperty("mongo.dbname");
    }

    @Override
    public Mongo mongo() throws Exception {
        //需要mongoDB 憑證
//        MongoCredential credential = MongoCredential.createCredential("username", "databaseName",
//                "password".toCharArray());
//        return new MongoClient(
//                new ServerAddress(env.getProperty("mongo.host"), env.getProperty("mongo.port", Integer.class)),
//                Arrays.asList(credential));
        
        return new MongoClient(env.getProperty("mongo.host"), env.getProperty("mongo.port", Integer.class));
    }

}

編寫 MongoRepository 

public interface MRepositoy extends MongoRepository<MongoDocument, String>, SpittrMongoOperations {
    List<MongoDocument> findByUsername(String name);

    @Query("{'id':'6','name':?0,'password':?1}")
    List<MongoDocument> findByUsernameAndPassword(String name, String password);

}

擴展MongoRepository的

public interface SpittrMongoOperations {
    
    List<MongoDocument> findGo();
}

實現SpittrMongoOperations 注意 類名稱要與MRepositoy 一致 spring會自動加載擴展名已Impl結尾的類

public class MRepositoyImpl implements SpittrMongoOperations {

    @Autowired
    private MongoOperations mongoOperations;

    @Override
    public List<MongoDocument> findGo() {
        return mongoOperations.findAll(MongoDocument.class);
    }

}

Document 類

@Document 聲明此類爲mongo中對應的文檔

@Document(collection="user")
public class MongoDocument {
    
    @Id
    private String id;
    
    @Field("name")
    private String username;
    
    private String password;

    public String getId() {
        return id;
    }

    public MongoDocument(String id, String username, String password) {
        super();
        this.id = id;
        this.username = username;
        this.password = password;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
}