springboot項目mybatis日誌自定義設置無法生效

springboot項目mybatis日誌自定義設置無法生效，就是無法設置日誌級別，無法對java.sql.PreparedStatement、java.sql.Connection等進行設置。

翻了spring和mybatis官網以及幾十篇文章都沒找到一個好使的方法，大概是項目中有什麼奇怪的衝突的原因吧，不準備找了，直接自定義日誌搞起。

yml中的mybatis配置

mybatis:
  mapper-locations: classpath:/mapper/*/*xml
  configuration:
    #log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
    log-impl: testMavenWeb.log.CustomLog
    jdbcTypeForNull: VARCHAR

CustomLog是實現org.apache.ibatis.logging.Log接口的自定義日誌類。

先來複習一下日誌類時這麼運行的，下面是CustomLog代碼

import org.apache.ibatis.logging.Log;

public class CustomLog implements Log {

	public CustomLog(String clazz) {
		// Do Nothing
	}

	@Override
	public boolean isDebugEnabled() {
		return true;
	}

	@Override
	public boolean isTraceEnabled() {
		return true;
	}

	@Override
	public void error(String s, Throwable e) {
		System.err.println(s);
		e.printStackTrace(System.err);
	}

	@Override
	public void error(String s) {
		System.out.println("mylog error");
		System.err.println(s);
	}

	@Override
	public void debug(String s) {
		System.out.println("mylog debug");
		System.out.println(s);
	}

	@Override
	public void trace(String s) {
		System.out.println("mylog trace");
		System.out.println(s);
	}

	@Override
	public void warn(String s) {
		System.out.println("mylog warn");
		System.out.println(s);
	}
}

sql代碼

    <select id="testQueryList" resultType="java.util.HashMap">
<![CDATA[
select level || #{data} lv from dual connect by level <= 20
]]>    
    </select>

現在我後臺的日誌是這樣的

mylog debug
Creating a new SqlSession
mylog debug
SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@26a8b664] was not registered for synchronization because synchronization is not active
mylog debug
JDBC Connection [com.alibaba.druid.proxy.jdbc.ConnectionProxyImpl@22972669] will not be managed by Spring
mylog debug
==>  Preparing: select level || ? lv from dual connect by level <= 20 
mylog debug
==> Parameters: ddd(String)
mylog trace
<==    Columns: LV
mylog trace
<==        Row: 1ddd
mylog trace
<==        Row: 2ddd
mylog trace
<==        Row: 3ddd
mylog trace
<==        Row: 4ddd
mylog trace
<==        Row: 5ddd
mylog trace
<==        Row: 6ddd
mylog trace
<==        Row: 7ddd
mylog trace
<==        Row: 8ddd
mylog trace
<==        Row: 9ddd
mylog trace
<==        Row: 10ddd
mylog trace
<==        Row: 11ddd
mylog trace
<==        Row: 12ddd
mylog trace
<==        Row: 13ddd
mylog trace
<==        Row: 14ddd
mylog trace
<==        Row: 15ddd
mylog trace
<==        Row: 16ddd
mylog trace
<==        Row: 17ddd
mylog trace
<==        Row: 18ddd
mylog trace
<==        Row: 19ddd
mylog trace
<==        Row: 20ddd
mylog debug
<==      Total: 20
mylog debug
Closing non transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@26a8b664]

剩下的就簡單了，比如我如果想要屏蔽ResultSet，則只需要屏蔽trace 中的代碼即可

	@Override
	public void trace(String s) {
		//System.out.println("mylog trace");
		//System.out.println(s);
	}

現在這個日誌設置已經夠用，日後需要時再做完善吧。