记录 springboot 日志输出到文件 遇到的坑

概述： springboot + spring data jpa  整合后 日志输出到文件 始终不行，无奈查阅资料， 最后总算成功了

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.ztsj</groupId>
    <artifactId>ztsj-data</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.16.RELEASE</version>
    </parent>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Edgware.SR4</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <exclusions>
              <exclusion>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-starter-logging</artifactId>
              </exclusion>
           </exclusions>
        </dependency>
        <!-- springboot-log4j -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-log4j2</artifactId>
        </dependency>
        <!-- 加了该配置文件 会自动启动数据库 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>

        <dependency>
            <groupId>commons-configuration</groupId>
            <artifactId>commons-configuration</artifactId>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

        
    </dependencies>
    
    <build>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
            <resource>
                <directory>${project.basedir}/src/main/resources</directory>
                <excludes>
                    <exclude>**/*.java</exclude>
                </excludes>
            </resource>
        </resources>

        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <configuration>
                    <skip>true</skip>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <dependencies>
                    <dependency>
                        <groupId>org.springframework.boot</groupId>
                        <artifactId>spring-boot-maven-plugin</artifactId>
                        <version>1.2.7.RELEASE</version>
                    </dependency>
                </dependencies>
                <configuration>
                    <keepDependenciesWithProvidedScope>true</keepDependenciesWithProvidedScope>
                    <createDependencyReducedPom>true</createDependencyReducedPom>
                    <filters>
                        <filter>
                            <artifact>*:*</artifact>
                            <excludes>
                                <exclude>META-INF/*.SF</exclude>
                                <exclude>META-INF/*.DSA</exclude>
                                <exclude>META-INF/*.RSA</exclude>
                                <exclude>**/Log4j2Plugins.dat</exclude>
                            </excludes>
                        </filter>
                    </filters>
                </configuration>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                        <configuration>
                            <transformers>
                                <transformer
                                    implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
                                    <resource>META-INF/spring.handlers</resource>
                                </transformer>
                                <transformer
                                    implementation="org.springframework.boot.maven.PropertiesMergingResourceTransformer">
                                    <resource>META-INF/spring.factories</resource>
                                </transformer>
                                <transformer
                                    implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
                                    <resource>META-INF/spring.schemas</resource>
                                </transformer>
                                <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer" />
                                <transformer
                                    implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                    <mainClass>com.ims.Appstart</mainClass>
                                </transformer>
                            </transformers>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

log4j2-spring.xml

<?xml version="1.0" encoding="utf-8"?>
<configuration>
    <properties>
        <!-- 文件输出格式 -->
        <property name="PATTERN">%d{yyyy-MM-dd HH:mm:ss,SSS} |-%-5level [%thread] %c [%L] -| %msg%n</property>
    </properties>
    <appenders>
        <!--添加一个控制台追加器-->
        <Console name="Console" target="system_out">
            <PatternLayout pattern="${PATTERN}" />
        </Console>
        <!--添加一个文本追加器，文件位于E:\logs目录下，名为HelloWorld.log-->
        <File name="File" fileName="E:\logs\api-service.log">
            <PatternLayout>
                <pattern>${PATTERN}</pattern>
            </PatternLayout>
            <Policies>
                <SizeBasedTriggeringPolicy size="20 MB" />
            </Policies>
        </File>
    </appenders>
    <loggers>
        <root level="info">
            <appenderref ref="File" />
　　　　　　　<!--为了直观，在控制天中也输出info级别的日志-->
            <appenderref ref="Console" />
        </root>
        <!--把org.springframework包下的所有日志输出到log文件，additivity="false"表示不输出到控制台-->
        <Logger name="org.springframework" level="info" additivity="true">
            <appenderRef ref="File" />
        </Logger>
    </loggers>
</configuration>

java,使用

package com.ims.utils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class DateManagerUtils {
    private static final String FILE_PATH = "date.txt";
    
    private static final Logger logger = LoggerFactory.getLogger(DateManagerUtils.class);
    
    
    public static String log() throws IOException {

　　　　 logger.error("test");

   }

}

总结： springboot 需要排除内置日志， 然后是同log4j2， 貌似高版本不支持log4j了。  打包时 一定要 

  <exclude>**/Log4j2Plugins.dat</exclude>  加上这个， 不然日志有问题 ，