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Consider defining a bean of type 'package' in your configuration [Spring-Boot]

本文轉載自   查看原文   2017-07-05 00:35   11232    Java

 

https://stackoverflow.com/questions/40384056/consider-defining-a-bean-of-type-package-in-your-configuration-spring-boot

 http://blog.csdn.net/u012049760/article/details/70691925

Your Applicant class is not scanned it seems. By default all packages starting with the root as the class where you have put @SpringBootApplication will be scanned.

suppose your main class "WebServiceApplication" is in "com.service.something", then all components that fall under "com.service.something" is scanned, and "com.service.applicant" will not be scanned.

You can either restructure your packages such that "WebServiceApplication" falls under a root package and all other components becomes part of that root package. Or you can include @SpringBootApplication(scanBasePackages={"com.service.something","com.service.application"}) etc such that "ALL" components are scanned and initialized in the spring container.

Update based on comment

If you have multiple modules that are being managed by maven/gradle, all spring needs is the package to scan. You tell spring to scan "com.module1" and you have another module which has its root package name as "com.module2", those components wont be scanned. You can even tell spring to scan "com" which will then scan all components in "com.module1." and "com.module2."

 

 

 

 

 

 

I am not sure if it is because I have my project broke down in modules but this is how I solved my issue of not be able to find my repositories.

@SpringBootApplication
@ComponentScan({"com.delivery.request"})
@EntityScan("com.delivery.domain") @EnableJpaRepositories("com.delivery.repository")

 

 

1.問題：xxx.jar中沒有主清單屬性 
 
命令：make debug
結果：
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  1. java -agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=5033 -Dgrpc.port=6033 -Dserver.port=8033 -jar target/demo-1.0-SNAPSHOT.jar  
  2. Listening for transport dt_socket at address: 5033  
  3. target/demo-1.0-SNAPSHOT.jar中沒有主清單屬性  
解決：查找資料發現MAVEN插件打包生成的jar包中的META-INF/MANIFEST.MF文件，沒有設置主函數信息。配置pom.xml即可；
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  1. <plugin>  
  2.         <groupId>org.springframework.boot</groupId>  
  3.         <artifactId>spring-boot-maven-plugin</artifactId>  
  4. </plugin>  
（如果直接配置則會報錯→問題2）
現在配置為：
 
2.問題：<plugin>不能識別
 
命令：make install
結果：
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  1. mvn clean install -DskipTests  
  2. [INFO] Scanning for projects...  
  3. [ERROR] [ERROR] Some problems were encountered while processing the POMs:  
  4. [ERROR] Malformed POM /Users/********/Documents/workspace/pom.xml: Unrecognised tag: 'plugin' (position: START_TAG seen ...</repositories>\n\n    <plugin>... @38:13)  @ /Users/********/Documents/workspace/pom.xml, line 38, column 13  
  5. @  
  6. [ERROR] The build could not read 1 project -> [Help 1]  
  7. [ERROR]     
  8. [ERROR]   The project com.mobike:demo:1.0-SNAPSHOT (/Users/********/Documents/workspace/pom.xml) has 1 error  
  9. [ERROR]     Malformed POM /Users/********/Documents/workspace/pom.xml: Unrecognised tag: 'plugin' (position: START_TAG seen ...</repositories>\n\n    <plugin>... @38:13)  @ /Users/********/Documents/workspace/pom.xml, line 38, column 13 -> [Help 2]  
  10. [ERROR]  
  11. [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.  
  12. [ERROR] Re-run Maven using the -X switch to enable full debug logging.  
  13. [ERROR]  
  14. [ERROR] For more information about the errors and possible solutions, please read the following articles:  
  15. [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/ProjectBuildingException  
  16. [ERROR] [Help 2] http://cwiki.apache.org/confluence/display/MAVEN/ModelParseException  
 
原因：未加上<build>
 
3.問題：target/xxx.jar找不到
 
命令：make debug
結果：
原因：檢查target目錄下的jar包名，發現與Makefile中寫的不符合。將debug和run里面的名字改成對的即可。
 
4.問題：Consider defining a bean of type 'service.IUserInfoService' in your configuration.
命令：make debug
結果：
 
解決方案：加入config，並在UserController.java中加入注解@SpringBootApplication(scanBasePackages = {"service","dao","config”})
解決過程：
在工程中加入config文件，配置如下：
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  1. package config;  
  2. import com.alibaba.druid.pool.DruidDataSource;  
  3. import lombok.extern.slf4j.Slf4j;  
  4. import org.apache.ibatis.session.SqlSessionFactory;  
  5. import org.mybatis.spring.SqlSessionFactoryBean;  
  6. import org.mybatis.spring.annotation.MapperScan;  
  7. import org.springframework.beans.factory.annotation.Autowired;  
  8. import org.springframework.beans.factory.annotation.Value;  
  9. import org.springframework.context.annotation.Bean;  
  10. import org.springframework.context.annotation.Configuration;  
  11. import org.springframework.core.io.Resource;  
  12. import org.springframework.core.io.support.ResourcePatternResolver;  
  13. import org.springframework.jdbc.core.JdbcTemplate;  
  14. import org.springframework.jdbc.datasource.DataSourceTransactionManager;  
  15. import org.springframework.stereotype.Repository;  
  16. import javax.annotation.PostConstruct;  
  17. import javax.annotation.PreDestroy;import javax.sql.DataSource;  
  18. import java.io.IOException;import java.sql.SQLException;import java.util.ArrayList;  
  19. import java.util.Arrays;import java.util.List;  
  20. @Slf4j  
  21. @Configuration  
  22. @MapperScan(basePackages = {  
  23.     "dao",},    annotationClass = Repository.class,    sqlSessionFactoryRef = SysUserAuthDaoConfig.SQL_SESSION_FACTORY_NAME)  
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  1. public class SysUserAuthDaoConfig {  
  2.   
  3.     public static final String SQL_SESSION_FACTORY_NAME = "opsSqlSessionFactory";  
  4.     @Value("${ops.database.username}")  
  5.     private String username;  
  6.     @Value("${ops.database.password}")  
  7.     private String password;  
  8.     @Value("${ops.database.url}")  
  9.     private String url;  
  10.     @Value("classpath:mybatis.userinfo/*.xml")  
  11.     private String mapperLocation;  
  12.     private DruidDataSource dataSource;  
  13.     private DataSourceTransactionManager transactionManager;  
  14.     private SqlSessionFactory sqlSessionFactory;  
  15.     @Autowired    private ResourcePatternResolver resourceResolver;  
  16.     public String getUsername() {  
  17.         return username;    }  
  18.   
  19.     public void setUsername(String username) {  
  20.         this.username = username;    }  
  21.   
  22.     public String getPassword() {  
  23.         return password;    }  
  24.   
  25.     public void setPassword(String password) {  
  26.         this.password = password;    }  
  27.   
  28.     public String getUrl() {  
  29.         return url;    }  
  30.   
  31.     public void setUrl(String url) {  
  32.         this.url = url;    }  
  33.   
  34.     public String getMapperLocation() {  
  35.         return mapperLocation;    }  
  36.   
  37.     public void setMapperLocation(String mapperLocation) {  
  38.         this.mapperLocation = mapperLocation;    }  
  39.   
  40.     public String[] getMapperLocations() {  
  41.         String[] mapperLocations = new String[1];        mapperLocations[0] = getMapperLocation();        return mapperLocations;    }  
  42.   
  43.     @PostConstruct    public void init() {  
  44.         try {  
  45.             log.info("Init datasource: url: {}", url);            dataSource = new DruidDataSource();            dataSource.setDriverClassName("com.mysql.jdbc.Driver");            dataSource.setUrl(url);            dataSource.setUsername(username);            dataSource.setPassword(password);            dataSource.setTestWhileIdle(true);            dataSource.setTestOnReturn(false);            dataSource.init();  
  46.             transactionManager = new DataSourceTransactionManager();            transactionManager.setDataSource(dataSource);            log.info("Init done");        } catch (Throwable t) {  
  47.             log.error("Init error", t);        }  
  48.     }  
  49.   
  50.     @PreDestroy    public void destroy() {  
  51.         try {  
  52.             log.info("Close {}", url);            dataSource.close();            log.info("Close {} done", url);        } catch (Throwable t) {  
  53.             log.error("Destroy error", t);        }  
  54.     }  
  55.   
  56.     @Bean(name = SQL_SESSION_FACTORY_NAME)  
  57.     public SqlSessionFactory sqlSessionFactoryBean() throws Exception {  
  58.         if (sqlSessionFactory == null) {  
  59.             SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();            org.apache.ibatis.session.Configuration  
  60.                 config = new org.apache.ibatis.session.Configuration();            config.setMapUnderscoreToCamelCase(true);            sqlSessionFactoryBean.setConfiguration(config);            sqlSessionFactoryBean.setDataSource(dataSource);            List<Resource> resources = new ArrayList<>();            if (this.getMapperLocations() != null) {  
  61.                 for (String mapperLocation : this.getMapperLocations()) {  
  62.                     try {  
  63.                         Resource[] mappers = resourceResolver.getResources(mapperLocation);                        resources.addAll(Arrays.asList(mappers));                    } catch (IOException e) {  
  64.                         log.error("IOException", e);                        return null;                    }  
  65.                 }  
  66.             }  
  67.             Resource[] arr = resources.toArray(new Resource[resources.size()]);            sqlSessionFactoryBean.setMapperLocations(arr);            sqlSessionFactory = sqlSessionFactoryBean.getObject();        }  
  68.         return sqlSessionFactory;    }  
  69.   
  70.     @Bean("sysUserAuthJdbcTemplate")  
  71.     public JdbcTemplate jdbcTemplate() {  
  72.         return new JdbcTemplate(this.dataSource);    }  
  73.   
  74.     @Bean("sysUserAuthDataSource")  
  75.     public DataSource getDatabase() throws SQLException {  
  76.         return dataSource;    }  
  77.   
  78.     @Bean("sysUserAuthTransactionManager")  
  79.     public DataSourceTransactionManager transactionManager() {  
  80.         return transactionManager;    }  
  81.   
  82. }  


一開始只加入了service，先掃service包，發現error變成了'dao.UserInfoMapper'
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  1. Description:  
  2. Field userInfoMapper in service.UserInfoServiceimpl required a bean of type 'dao.UserInfoMapper' that could not be found.  
  3. Action:  
  4. Consider defining a bean of type 'dao.UserInfoMapper' in your configuration.  
 
可以看出實際上是因為Mapper沒有被掃到，所以增加dao和config的掃描。
改成@SpringBootApplication(scanBasePackages = {"service","dao","config”})把包都掃到之后，編譯通過。

 


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