spring mybatis設定SQL語句列印
阿新 • • 發佈：2018-12-03
在使用mybatis進行開發的時候，由於可以動態拼接sql，這樣大大方便了我們。但是也有一定的問題，當我們動態sql拼接的塊很多的時候，我們要想從*mapper.xml中直接找出完整的sql就會非常的難，這個時候經常會需要把組合之後的完整sql調試出來比較好。下面來看兩種調試出sql的兩種方式
解決方案
方案1：
網上說的比較多的，之前也是這麼用的一種方式
1:首先將ibatis log4j執行級別調到DEBUG可以在控制檯打印出ibatis執行的sql語句
2:新增如下語句
###顯示SQL語句部分 log4j.logger.com.ibatis=DEBUG log4j.logger.com.ibatis.common.jdbc.SimpleDataSource=DEBUG log4j.logger.com.ibatis.common.jdbc.ScriptRunner=DEBUG log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate=DEBUG log4j.logger.Java.sql.Connection=DEBUG log4j.logger.java.sql.Statement=DEBUG log4j.logger.java.sql.PreparedStatement=DEBUG
方案2：
如果是application.properties
logging.level.com.neo.mapper=debug若果是application.yml
logging:
level:
com.test.mapper: DEBUGcom.test.mapper是 mybatis介面及對映檔案包。
application.properties 改成 application.yml
yml檔案的好處，天然的樹狀結構，一目瞭然
方案3：
application.properties
server.port=8090 server.session-timeout=30 server.context-path= server.tomcat.max-threads=0 server.tomcat.uri-encoding=UTF-8 spring.datasource.url = jdbc:mysql://localhost:3306/newbirds spring.datasource.username = root spring.datasource.password = mymysql spring.datasource.driverClassName = com.mysql.jdbc.Driver # Specify the DBMS spring.jpa.database = MYSQL # Show or not log for each sql query spring.jpa.show-sql = true # Hibernate ddl auto (create, create-drop, update) spring.jpa.hibernate.ddl-auto = update # Naming strategy spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.ImprovedNamingStrategy # stripped before adding them to the entity manager) spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
application.yml
server: port: 8090 session-timeout: 30 tomcat.max-threads: 0 tomcat.uri-encoding: UTF-8 spring: datasource: url : jdbc:mysql://localhost:3306/newbirds username : root password : mymysql driverClassName : com.mysql.jdbc.Driver jpa: database : MYSQL show-sql : true hibernate: ddl-auto : update naming-strategy : org.hibernate.cfg.ImprovedNamingStrategy properties: hibernate: dialect : org.hibernate.dialect.MySQL5Dialect
注意點：
1，原有的key，例如spring.jpa.properties.hibernate.dialect，按“.”分割，都變成樹狀的配置
2，key後面的冒號，後面一定要跟一個空格
3，把原有的application.properties刪掉。然後一定要執行一下 maven -X clean install
方案4：
springboot對logback的支援是非常好的，不需要任何配置，只需要在resource下加logback.xml就可以實現功能
直接貼程式碼：
<?xml version="1.0"?>
<configuration>
<property name="logPattern" value="%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%thread][%c.%M:%L]- %msg%n"/>
<property name="logHome" value="${log_path}/log"/>
<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<File>${logHome}/file.log</File>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${logHome}/file.log.%d.%i.gz</fileNamePattern>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<maxFileSize>15 MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
<MaxHistory>30</MaxHistory>
</rollingPolicy>
<encoder>
<pattern>${logPattern}</pattern>
<charset>UTF-8</charset>
</encoder>
</appender>
<appender name="baselog" class="ch.qos.logback.core.rolling.RollingFileAppender">
<File>${logHome}/base.log</File>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${logHome}/base.log.%d.%i.gz</fileNamePattern>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<maxFileSize>15 MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
<MaxHistory>30</MaxHistory>
</rollingPolicy>
<encoder>
<pattern>${logPattern}</pattern>
<charset>UTF-8</charset>
</encoder>
</appender>
<appender name="springlog" class="ch.qos.logback.core.rolling.RollingFileAppender">
<File>${logHome}/spring.log</File>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${logHome}/spring.log.%d.%i.gz</fileNamePattern>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<maxFileSize>20 MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
<MaxHistory>30</MaxHistory>
</rollingPolicy>
<encoder>
<pattern>${logPattern}</pattern>
<charset>UTF-8</charset>
</encoder>
</appender>
<appender name="sqllog" class="ch.qos.logback.core.rolling.RollingFileAppender">
<File>${logHome}/sqllog.log</File>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${logHome}/sql.log.%d.%i.gz</fileNamePattern>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<maxFileSize>20 MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
<MaxHistory>30</MaxHistory>
</rollingPolicy>
<encoder>
<pattern>${logPattern}</pattern>
<charset>UTF-8</charset>
</encoder>
</appender>
<appender name="convertErrorlog" class="ch.qos.logback.core.rolling.RollingFileAppender">
<File>${logHome}/convertErrorlog.log</File>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${logHome}/convertErrorlog.log.%d.%i.gz</fileNamePattern>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<maxFileSize>20 MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
<MaxHistory>30</MaxHistory>
</rollingPolicy>
<encoder>
<pattern>${logPattern}</pattern>
<charset>UTF-8</charset>
</encoder>
</appender>
<appender name="cachelog" class="ch.qos.logback.core.rolling.RollingFileAppender">
<File>${logHome}/cachelog.log</File>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${logHome}/cachelog.log.%d.%i.gz</fileNamePattern>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<maxFileSize>20 MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
<MaxHistory>30</MaxHistory>
</rollingPolicy>
<encoder>
<pattern>${logPattern}</pattern>
<charset>UTF-8</charset>
</encoder>
</appender>
<appender name="businessLogger" class="ch.qos.logback.core.rolling.RollingFileAppender">
<File>${logHome}/business.log</File>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${logHome}/business.log.%d.%i.gz</fileNamePattern>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<maxFileSize>20 MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
<MaxHistory>5</MaxHistory>
</rollingPolicy>
<encoder>
<pattern>${logPattern}</pattern>
<charset>UTF-8</charset>
</encoder>
</appender>
<appender name="dataLogger" class="ch.qos.logback.core.rolling.RollingFileAppender">
<File>${logHome}/data.log</File>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${logHome}/data.log.%d.%i.gz</fileNamePattern>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<maxFileSize>20 MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
<MaxHistory>5</MaxHistory>
</rollingPolicy>
<encoder>
<pattern>${logPattern}</pattern>
<charset>UTF-8</charset>
</encoder>
</appender>
<root level="WARN">
<appender-ref ref="FILE"/>
</root>
<logger name="com.test" level="WARN" additivity="false">
<appender-ref ref="baselog"/>
</logger>
<logger name="com.smile" level="DEBUG" additivity="false">
<appender-ref ref="sqllog"/>
</logger>
<logger name="java.sql" level="WARN" additivity="false">
<appender-ref ref="sqllog"/>
</logger>
<logger name="org.springframework" level="WARN" additivity="false">
<appender-ref ref="springlog"/>
</logger>
<logger name="o.springframework" level="WARN" additivity="false">
<appender-ref ref="springlog"/>
</logger>
<logger name="ERROR_LOGGER" level="WARN" additivity="false">
<appender-ref ref="convertErrorlog"/>
</logger>
<logger name="CACHE_LOGGER" level="WARN" additivity="false">
<appender-ref ref="cachelog"/>
</logger>
<logger name="business_logger" level="WARN" additivity="false">
<appender-ref ref="businessLogger"/>
</logger>
<logger name="data_logger" level="WARN" additivity="false">
<appender-ref ref="dataLogger"/>
</logger>
</configuration>
<!-- name包必須能夠掃描到所以類，包括啟動類 -->
<logger name="com.smile" level="debug" additivity="false">
<appender-ref ref="smile" />
</logger>
其中值得注意的是：你配置檔案中的包名要能夠掃描到你的所有類，包括啟動類。
否則，你的日誌檔案是生成了，但是不會向裡面寫入內容
啟動程式列印日誌，日誌成功生成：
方案5：
spring mvc mybatis配置檔案：
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<!-- 設定執行引數 -->
<settings>
<!-- 全域性對映器啟用快取 -->
<setting name="cacheEnabled" value="true" />
<!-- 查詢時,關閉關聯物件及時載入以提高效能 -->
<setting name="lazyLoadingEnabled" value="false" />
<!-- 設定關聯物件載入的形態,此處為按需載入欄位(載入欄位由SQL指定),不會載入關聯表的所有欄位,以提高效能 -->
<setting name="aggressiveLazyLoading" value="false" />
<!-- 對於位置的SQL查詢,允許返回不同的結果集以達到通用的效果 -->
<setting name="multipleResultSetsEnabled" value="true" />
<!-- 允許使用列標籤代替列明 -->
<setting name="useColumnLabel" value="true" />
<!-- 允許使用自定義的主鍵值(比如由程式生成的UUID 32位編碼作為鍵值), 資料表的pk生成策略將被覆蓋 -->
<setting name="useGeneratedKeys" value="true" />
<!-- 給予被巢狀的resultMap以欄位-屬性的對映支援 -->
<setting name="autoMappingBehavior" value="PARTIAL" />
<!-- 對於批量更新操作快取SQL以提高效能 -->
<setting name="defaultExecutorType" value="REUSE" />
<!-- 資料庫超過25000秒仍未響應則超時 -->
<setting name="defaultStatementTimeout" value="25000" />
<!-- 列印查詢語句 -->
<!-- <setting name="logImpl" value="STDOUT_LOGGING" /> -->
</settings>
</configuration>
<setting name="logImpl" value="STDOUT_LOGGING" />如果將它註釋，你的sql就可以列印進日誌
如果將它放開，你的sql就列印到了控制檯