您好我想在Spring Boot应用程序中使用DBAppender
。我想从application.properties
文件中检索数据库连接属性。然而,它似乎并没有认识到它们。
请注意,我使用的是Spring Boot 1.2.x
,因此我暂时无法使用logback-spring.xml
。
我使用的配置如下:
<appender name="DB" class="ch.qos.logback.classic.db.DBAppender">
<connectionSource class="ch.qos.logback.core.db.DriverManagerConnectionSource">
<driverClass>${spring.datasource.driver-class-name}</driverClass>
<url>${spring.datasource.url}</url>
<user>${spring.datasource.username}</user>
<password>${spring.datasource.password}</password>
</connectionSource>
</appender>
答案 0 :(得分:4)
在搜索类似的解决方案时偶然发现了这一点。由于这仍然没有答案,我发现了一些方法:
1)如果你使用的是Spring Boot 1.3+(你已经指出你不是为了将来参考),我设法使用&lt; springProperty&gt; 标签来重用它来自application.properties的值。
application.properties(用于嵌入式H2 DB):
spring.datasource.driverClassName=org.h2.Driver
spring.datasource.url=jdbc:h2:mem:testdb
spring.datasource.username=sa
spring.datasource.password=
的logback-spring.xml:
<springProperty name="spring.datasource.driverClassName" source="spring.datasource.driverClassName"/>
<springProperty name="spring.datasource.url" source="spring.datasource.url"/>
<springProperty name="spring.datasource.username" source="spring.datasource.username"/>
<springProperty name="spring.datasource.password" source="spring.datasource.password"/>
<appender name="DB" class="ch.qos.logback.classic.db.DBAppender">
<connectionSource class="ch.qos.logback.core.db.DriverManagerConnectionSource">
<driverClass>${spring.datasource.driverClassName}</driverClass>
<url>${spring.datasource.url}</url>
<user>${spring.datasource.username}</user>
<password>${spring.datasource.password}</password>
</connectionSource>
</appender>
2)将应用程序属性导入为属性源:Unable to use Spring Property Placeholders in logback.xml
<property resource="application.properties" />
3)也许您能够在容器JNDI中注册数据源并使用logback的JNDIConnectionSource代替?看看这篇文章:How to create JNDI context in Spring Boot with Embedded Tomcat Container
答案 1 :(得分:1)
因此,请支持jpt的答案。 因为没有“
<property resource="application.yml" />
”(或该答案中的.properties),我什么都不会工作。
但是我的回答和贡献:我想添加它也可以与application.yml一起使用。
我将尝试列出我在这里所做的所有事情:
设置3个环境变量。
SPRING_DATASOURCE_URL
SPRING_DATASOURCE_USER
SPRING_DATASOURCE_PASSWORD
application.yml的内容(如下)
spring:
datasource:
#SPRING_DATASOURCE_URL environment variable will be something like -> jdbc:sqlserver://MySqlServer\\MyInstance:1433;DatabaseName=MyDbName;
url: ${SPRING_DATASOURCE_URL}
username: ${SPRING_DATASOURCE_USERNAME}
password: ${SPRING_DATASOURCE_PASSWORD}
driverClassName: com.microsoft.sqlserver.jdbc.SQLServerDriver
logging:
config: classpath:logback-spring.xml
注意,我正在使用文件“ logback-spring.xml”。我不确定是否会有所作为(相对于仅使用“ logback.xml”)
logback-spring.xml的内容(如下)
<configuration debug="true" scan="true" scanPeriod="30 seconds">
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<filter class="ch.qos.logback.classic.filter.ThresholdFilter">
<level>INFO</level>
</filter>
<encoder>
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} [%file:%line] %msg%n</pattern>
</encoder>
</appender>
<!-- THIS IS THE MAGIC LINE that JPT figured out -->
<property resource="application.yml" />
<springProperty name="humptydumptyurl" source="spring.datasource.url"/>
<springProperty name="humptydumptyusername" source="spring.datasource.username"/>
<springProperty name="humptydumptypassword" source="spring.datasource.password"/>
<appender name = "MyDbAppender" class="ch.qos.logback.classic.db.DBAppender">
<connectionSource class="ch.qos.logback.core.db.DriverManagerConnectionSource">
<driverClass>com.microsoft.sqlserver.jdbc.SQLServerDriver</driverClass>
<url>${humptydumptyurl}</url>
<user>${humptydumptyusername}</user>
<password>${humptydumptypassword}</password>
</connectionSource>
</appender>
<root level="INFO">
<appender-ref ref="STDOUT"/>
<appender-ref ref="MyDbAppender"/>
</root>
</configuration>
注意,我故意使用“ humptydumpty”以避免歧义。您可能会使用更好的前缀,但我想显示映射的左侧可以是您想要的任何名称。
注意,我的application.properties文件为空。我是100%application.yml。
注意,您还可以设置/使用第四个环境变量(我认为它可以工作,但我尚未测试)
SPRING_DATASOURCE_DRIVER-CLASS-NAME
及其两个好友
datasource:
driverClassName: ${SPRING_DATASOURCE_DRIVER-CLASS-NAME}
和
<springProperty name="humptydumptydriverclassname" source="spring.datasource.driver-class-name"/>
......
下面的一些mssql-server注释(对大多数用户来说可能并不重要)
我用过
<dependency>
<groupId>com.microsoft.sqlserver</groupId>
<artifactId>mssql-jdbc</artifactId>
<version>7.0.0.jre8</version>
</dependency>
并使其正常工作。
我必须对DDL进行一些调整,因为在INSERT上出现“截断”错误。
-- This SQL script creates the required tables by ch.qos.logback.classic.db.DBAppender
--
-- The event_id column type was recently changed from INT to DECIMAL(40)
-- without testing.
DROP TABLE logging_event_property
DROP TABLE logging_event_exception
DROP TABLE logging_event
CREATE TABLE logging_event
(
timestmp DECIMAL(20) NOT NULL,
formatted_message VARCHAR(max) NOT NULL,
logger_name VARCHAR(512) NOT NULL,
level_string VARCHAR(512) NOT NULL,
thread_name VARCHAR(512),
reference_flag SMALLINT,
arg0 VARCHAR(512),
arg1 VARCHAR(512),
arg2 VARCHAR(512),
arg3 VARCHAR(512),
caller_filename VARCHAR(512) NOT NULL,
caller_class VARCHAR(512) NOT NULL,
caller_method VARCHAR(512) NOT NULL,
caller_line CHAR(16) NOT NULL,
event_id DECIMAL(38) NOT NULL identity,
PRIMARY KEY(event_id)
)
CREATE TABLE logging_event_property
(
event_id DECIMAL(38) NOT NULL,
mapped_key VARCHAR(512) NOT NULL,
mapped_value VARCHAR(1024),
PRIMARY KEY(event_id, mapped_key),
FOREIGN KEY (event_id) REFERENCES logging_event(event_id)
)
CREATE TABLE logging_event_exception
(
event_id DECIMAL(38) NOT NULL,
i SMALLINT NOT NULL,
trace_line VARCHAR(512) NOT NULL,
PRIMARY KEY(event_id, i),
FOREIGN KEY (event_id) REFERENCES logging_event(event_id)
)
最后,让我给出所有最重要的调试提示。
首先将连接字符串值硬编码,使其正常工作...开始插入环境变量替换项时。
ch.qos.logback.classic.db.DBAppender必须具有良好且有效的连接字符串以进行“检查” .....如果输入错误的连接字符串,则会出现此类错误(下面)。我花了4个小时来追查错误,这是因为追逐下面的错误,仅仅是因为我的连接字符串无法正常工作。再次,先将正确/有效的值硬编码到logback-spring.xml中,使其生效,然后回圈并执行环境变量spring-properties替换伏都教。
因此对于db-appender,首先硬编码您的url,用户名,密码,使其正常工作,然后慢慢开始进行替换...我在没有意识到所有替换之前就追赶了以下错误方式工作。...
06:19:09,721 |-WARN in ch.qos.logback.classic.db.DBAppender[MyDbAppender] - Attempted to append to non started appender [MyDbAppender].
at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:202)
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127)
at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:75)
at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:54)
at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:347)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:306)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248)
Caused by: java.lang.IllegalStateException: Logback configuration error detected:
ERROR in ch.qos.logback.core.joran.spi.Interpreter@68:16 - RuntimeException in Action for tag [appender] java.lang.IllegalStateException: DBAppender cannot function if the JDBC driver does not support getGeneratedKeys method *and* without a specific SQL dialect
at org.springframework.boot.logging.logback.LogbackLoggingSystem.loadConfiguration(LogbackLoggingSystem.java:169)
at org.springframework.boot.logging.AbstractLoggingSystem.initializeWithSpecificConfig(AbstractLoggingSystem.java:67)
at org.springframework.boot.logging.AbstractLoggingSystem.initialize(AbstractLoggingSystem.java:57)
at org.springframework.boot.logging.logback.LogbackLoggingSystem.initialize(LogbackLoggingSystem.java:117)
at org.springframework.boot.context.logging.LoggingApplicationListener.initializeSystem(LoggingApplicationListener.java:298)
最后只是列出所有内容。
这些是我使用的登录版本:
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
<version>1.2.3</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.2.3</version>
</dependency>
答案 2 :(得分:0)
我之前一直在寻找解决方案 jpt 和特别是 granadaCoder 之前描述的,但尽管与 logback-spring.xml
一起工作,但它对我不起作用。相反,更简单的方法有所帮助:
魔线
<property resource="application-local.yml" />
然后简单
<appender name="DB_Logger" class="ch.qos.logback.classic.db.DBAppender">
<connectionSource class="ch.qos.logback.core.db.DriverManagerConnectionSource">
<driverClass>com.mysql.cj.jdbc.Driver</driverClass>
<url>${URL}</url>
<user>${USERNAME}</user>
<password>${PASSWORD}</password>
</connectionSource>
</appender>
显然在我的 application.yml
中有 spring.datasource.URL/USERNAME/PASSWORD
值