新建一个maven spring boot项目中遇到的问题
1.问题：xxx.jar中没有主清单属性
命令：make debug
结果：
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
Listening for transport dt_socket at address: 5033
target/demo-1.0-SNAPSHOT.jar中没有主清单属性
解决：查找资料发现MAVEN插件打包生成的jar包中的META-INF/MANIFEST.MF文件，没有设置主函数信息。配置pom.xml即可；
org.springframework.boot
spring-boot-maven-plugin
（如果直接配置则会报错→问题2）
现在配置为：
2.问题：不能识别
命令：make install
结果：
mvn clean install -DskipTests
[INFO] Scanning for projects...
[ERROR] [ERROR] Some problems were encountered while processing the POMs:
[ERROR] Malformed POM /Users/********/Documents/workspace/pom.xml: Unrecognised tag: 'plugin' (position: START_TAG seen ...\n\n ... @38:13) @ /Users/********/Documents/workspace/pom.xml, line 38, column 13
@
[ERROR] The build could not read 1 project -> [Help 1]
[ERROR]
[ERROR] The project com.mobike:demo:1.0-SNAPSHOT (/Users/********/Documents/workspace/pom.xml) has 1 error
[ERROR] Malformed POM /Users/********/Documents/workspace/pom.xml: Unrecognised tag: 'plugin' (position: START_TAG seen ...\n\n ... @38:13) @ /Users/********/Documents/workspace/pom.xml, line 38, column 13 -> [Help 2]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/ProjectBuildingException
[ERROR] [Help 2] http://cwiki.apache.org/confluence/display/MAVEN/ModelParseException
原因：未加上
3.问题：target/xxx.jar找不到
命令：make debug
结果：
原因：检查target目录下的jar包名，发现与Makefile中写的不符合。将debug和run里面的名字改成对的即可。
4.问题：Consider defining a bean of type 'service.IUserInfoService' in your configuration.
命令：make debug
结果：
解决方案：加入config，并在UserController.java中加入注解
@SpringBootApplication(
scanBasePackages = {
"service"
,
"dao"
,
"config
”})
解决过程：
在工程中加入config文件，配置如下：
package config;
import com.alibaba.druid.pool.DruidDataSource;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.ResourcePatternResolver;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.stereotype.Repository;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;import javax.sql.DataSource;
import java.io.IOException;import java.sql.SQLException;import java.util.ArrayList;
import java.util.Arrays;import java.util.List;
@Slf4j
@Configuration
@MapperScan(basePackages = {
"dao",}, annotationClass = Repository.class, sqlSessionFactoryRef = SysUserAuthDaoConfig.SQL_SESSION_FACTORY_NAME)public class SysUserAuthDaoConfig {
public static final String SQL_SESSION_FACTORY_NAME = "opsSqlSessionFactory";
@Value("${ops.database.username}")
private String username;
@Value("${ops.database.password}")
private String password;
@Value("${ops.database.url}")
private String url;
@Value("classpath:mybatis.userinfo/*.xml")
private String mapperLocation;
private DruidDataSource dataSource;
private DataSourceTransactionManager transactionManager;
private SqlSessionFactory sqlSessionFactory;
@Autowired private ResourcePatternResolver resourceResolver;
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; }
public String getUrl() {
return url; }
public void setUrl(String url) {
this.url = url; }
public String getMapperLocation() {
return mapperLocation; }
public void setMapperLocation(String mapperLocation) {
this.mapperLocation = mapperLocation; }
public String[] getMapperLocations() {
String[] mapperLocations = new String[1]; mapperLocations[0] = getMapperLocation(); return mapperLocations; }
@PostConstruct public void init() {
try {
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();
transactionManager = new DataSourceTransactionManager(); transactionManager.setDataSource(dataSource); log.info("Init done"); } catch (Throwable t) {
log.error("Init error", t); }
}
@PreDestroy public void destroy() {
try {
log.info("Close {}", url); dataSource.close(); log.info("Close {} done", url); } catch (Throwable t) {
log.error("Destroy error", t); }
}
@Bean(name = SQL_SESSION_FACTORY_NAME)
public SqlSessionFactory sqlSessionFactoryBean() throws Exception {
if (sqlSessionFactory == null) {
SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean(); org.apache.ibatis.session.Configuration
config = new org.apache.ibatis.session.Configuration(); config.setMapUnderscoreToCamelCase(true); sqlSessionFactoryBean.setConfiguration(config); sqlSessionFactoryBean.setDataSource(dataSource); List resources = new ArrayList<>(); if (this.getMapperLocations() != null) {
for (String mapperLocation : this.getMapperLocations()) {
try {
Resource[] mappers = resourceResolver.getResources(mapperLocation); resources.addAll(Arrays.asList(mappers)); } catch (IOException e) {
log.error("IOException", e); return null; }
}
}
Resource[] arr = resources.toArray(new Resource[resources.size()]); sqlSessionFactoryBean.setMapperLocations(arr); sqlSessionFactory = sqlSessionFactoryBean.getObject(); }
return sqlSessionFactory; }
@Bean("sysUserAuthJdbcTemplate")
public JdbcTemplate jdbcTemplate() {
return new JdbcTemplate(this.dataSource); }
@Bean("sysUserAuthDataSource")
public DataSource getDatabase() throws SQLException {
return dataSource; }
@Bean("sysUserAuthTransactionManager")
public DataSourceTransactionManager transactionManager() {
return transactionManager; }
} 
一开始只加入了service，先扫service包，发现error变成了'dao.UserInfoMapper'
Description:
Field userInfoMapper in service.UserInfoServiceimpl required a bean of type 'dao.UserInfoMapper' that could not be found.
Action:
Consider defining a bean of type 'dao.UserInfoMapper' in your configuration.
可以看出实际上是因为Mapper没有被扫到，所以增加dao和config的扫描。
改成
@SpringBootApplication(
scanBasePackages = {
"service"
,
"dao"
,
"config
”})把包都扫到之后，编译通过。