spring boot學習1之main和tomcat啟動及log日誌
阿新 • • 發佈：2019-02-04
寫了個spring boot例子，的確是零配置，平時需要寫個web例子測試之類的時候，用它還挺方便的。現在開發都搞微服務，api端之前都是dubbo或jesry，現在也可以用spring boot了。
現在記錄下spring boot的小例子，maven構造的。
建立個maven專案，jar或war都行，jar的話打包後通過main方法啟動，war的話打包後直接扔到tomcat即可。
建立個war的maven專案。
其中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.yhxy.vdc.dbcp</groupId> <artifactId>database_copy</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>war</packaging> <properties> <spring_versin>1.4.3.RELEASE</spring_versin> </properties> <!-- <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.4.3.RELEASE</version> </parent> --> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> <version>${spring_versin}</version> <exclusions> <exclusion> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> <version>${spring_versin}</version> <scope>provided</scope> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.7</version> </dependency> <!-- jsp --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>javax.servlet.jsp-api</artifactId> <version>2.2.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>taglibs</groupId> <artifactId>standard</artifactId> <version>1.1.2</version> </dependency> </dependencies> <build> <sourceDirectory>src</sourceDirectory> <plugins> <plugin> <artifactId>maven-compiler-plugin</artifactId> <version>3.1</version> <configuration> <source>1.7</source> <target>1.7</target> </configuration> </plugin> </plugins> </build> </project>
我把parent註釋掉了，使用的話，pom.xml檔案報錯，不知道是不是本地環境問題，去掉也無所謂。
controller的部分程式碼
再寫個Application.java@RestController @EnableAutoConfiguration @RequestMapping("/dbcp") public class DatabaseCopyController { private static Logger LOG =Logger.getLogger(DatabaseCopyController.class.getName()); @RequestMapping("/hello") @ResponseBody public String hello(HttpServletRequest request){ LOG.info("os=" + System.getProperty("os.name")); return "hello...."; }
package com.yhxy.vdc.dbcp;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.support.SpringBootServletInitializer;
@SpringBootApplication
public class Application extends SpringBootServletInitializer{
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(Application.class);
}
public static void main(String[] args) throws Exception {
SpringApplication.run(Application.class, args);
}
}
如果是直接run的方式執行的話，會使用spring boot裡內嵌的tomcat或jetty（還沒進行研究）。
如果不想使用內嵌的tomcat，而是使用自己的tomcat（方便優化之類的），那隻要把專案打包war後扔進自己的tomcat即可。
日誌配置，spring boot是預設使用logback.xml的，所以想自定義的話，在resources下自定義個logback.xml,比如
<!-- Logback configuration. See http://logback.qos.ch/manual/index.html -->
<configuration scan="true" scanPeriod="10 seconds">
<include resource="org/springframework/boot/logging/logback/base.xml" />
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<!-- encoders are assigned the type
ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->
<encoder>
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
</encoder>
</appender>
<appender name="INFO_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<File>${LOG_PATH}/info.log</File>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${LOG_PATH}/info-%d{yyyyMMdd}.log.%i</fileNamePattern>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<maxFileSize>500MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
<maxHistory>2</maxHistory>
</rollingPolicy>
<layout class="ch.qos.logback.classic.PatternLayout">
<Pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} -%msg%n
</Pattern>
</layout>
</appender>
<appender name="ERROR_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<filter class="ch.qos.logback.classic.filter.ThresholdFilter">
<level>ERROR</level>
</filter>
<File>${LOG_PATH}/error.log</File>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${LOG_PATH}/error-%d{yyyyMMdd}.log.%i
</fileNamePattern>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<maxFileSize>500MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
<maxHistory>2</maxHistory>
</rollingPolicy>
<layout class="ch.qos.logback.classic.PatternLayout">
<Pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} -%msg%n
</Pattern>
</layout>
</appender>
<root level="INFO">
<appender-ref ref="STDOUT" />
<appender-ref ref="INFO_FILE" />
<appender-ref ref="ERROR_FILE" />
</root>
</configuration>logging.config=classpath:logback.xml
logging.path=/logs