java SpringWeb如何實現列印日誌
阿新 • • 發佈:2019-01-12
今天后臺除錯,呼叫後臺介面卻發現沒有把日誌打印出來
於是開始配置列印日誌
1.匯入log4j的jar
import org.apache.log4j.Logger;
2.配置log4j.properties
log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.Target=System.out log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %m%n log4j.category.org.hibernate.tool.hbm2ddl=DEBUG log4j.category.org.hibernate.SQL=DEBUG log4j.rootLogger=info, stdout
3.web.xml配置監聽:
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>log4j.properties</param-value>
</context-param>
完整的web.xml的配置:
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5"> <display-name>newsweb</display-name> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> <servlet> <servlet-name>springMVC</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>springMVC</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <context-param> <param-name>contextConfigLocation</param-name> <param-value>WEB-INF/applicationContext.xml</param-value> </context-param> <context-param> <param-name>log4jConfigLocation</param-name> <param-value>log4j.properties</param-value> </context-param> <servlet-mapping> <servlet-name>default</servlet-name> <url-pattern>*.html</url-pattern> </servlet-mapping> </web-app>
4.在類中引入log列印日誌:
5.列印日誌:
希望對你有所幫助,如果你想做web專案可以私聊我哦