MyBatis拦截器打印不带问号的完整sql语句方法

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1	/* Preparing: SELECT * FROM tb_user WHERE id = ? AND user_name = ?  <br>   目标是打印：SELECT * FROM tb_user WHERE id = 1000059081 AND user_name = '积极'<br>*/ 这部分代码只是拦截了查询和更新，如果想对其他语句进行拦截，在@Intercepts中添加对应方法即可

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<br>package dao.Interceptor;   import org.apache.commons.collections.CollectionUtils; import org.apache.ibatis.executor.Executor; import org.apache.ibatis.mapping.BoundSql; import org.apache.ibatis.mapping.MappedStatement; import org.apache.ibatis.mapping.ParameterMapping; import org.apache.ibatis.plugin.*; import org.apache.ibatis.reflection.MetaObject; import org.apache.ibatis.session.Configuration; import org.apache.ibatis.session.ResultHandler; import org.apache.ibatis.session.RowBounds; import org.apache.ibatis.type.TypeHandlerRegistry;     import java.text.DateFormat; import java.util.Date; import java.util.List; import java.util.Locale; import java.util.Properties; import java.util.regex.Matcher;     @Intercepts({         @Signature(type = Executor.class, method = "update", args = {                 MappedStatement.class, Object.class }),         @Signature(type = Executor.class, method = "query", args = {                 MappedStatement.class, Object.class, RowBounds.class,                 ResultHandler.class }) }) @SuppressWarnings({"unchecked", "rawtypes"}) public class MybatisInterceptor implements Interceptor {       @Override     public Object intercept(Invocation invocation) throws Throwable {         try{             MappedStatement mappedStatement = (MappedStatement) invocation.getArgs()[0];  // 获取xml中的一个select/update/insert/delete节点，主要描述的是一条SQL语句             Object parameter = null; 　　　　　　　// 获取参数，if语句成立，表示sql语句有参数，参数格式是map形式             if (invocation.getArgs().length > 1) {                 parameter = invocation.getArgs()[1];                 System.out.println("parameter = " + parameter);             }             String sqlId = mappedStatement.getId(); // 获取到节点的id,即sql语句的id             System.out.println("sqlId = " + sqlId);             BoundSql boundSql = mappedStatement.getBoundSql(parameter);  // BoundSql就是封装myBatis最终产生的sql类             Configuration configuration = mappedStatement.getConfiguration();  // 获取节点的配置             String sql = getSql(configuration, boundSql, sqlId); // 获取到最终的sql语句             System.out.println("sql = " + sql);             //log.debug(sql);         }catch(Exception e){            // log.error(e.getMessage(), e);         }         return invocation.proceed();  // 执行完上面的任务后，不改变原有的sql执行过程     } 　　// 封装了一下sql语句，使得结果返回完整xml路径下的sql语句节点id + sql语句     public static String getSql(Configuration configuration, BoundSql boundSql,String sqlId) {         String sql = showSql(configuration, boundSql);         StringBuilder str = new StringBuilder(100);         str.append(sqlId);         str.append(":");         str.append(sql);         return str.toString();     } 　　/*<br>    *如果参数是String，则添加单引号， 如果是日期，则转换为时间格式器并加单引号； 对参数是null和不是null的情况作了处理<br>　　*/     private static String getParameterValue(Object obj) {         String value = null;         if (obj instanceof String) {             value = "'" + obj.toString() + "'";         } else if (obj instanceof Date) {             DateFormat formatter = DateFormat.getDateTimeInstance(DateFormat.DEFAULT, DateFormat.DEFAULT, Locale.CHINA);             value = "'" + formatter.format(new Date()) + "'";         } else {             if (obj != null) {                 value = obj.toString();             } else {                 value = "";             }           }         return value;     } 　　// 进行？的替换     public static String showSql(Configuration configuration, BoundSql boundSql) {         Object parameterObject = boundSql.getParameterObject();  // 获取参数         List<ParameterMapping> parameterMappings = boundSql                 .getParameterMappings();         String sql = boundSql.getSql().replaceAll("[\s]+", " ");  // sql语句中多个空格都用一个空格代替         if (CollectionUtils.isNotEmpty(parameterMappings) && parameterObject != null) {             TypeHandlerRegistry typeHandlerRegistry = configuration.getTypeHandlerRegistry(); // 获取类型处理器注册器，类型处理器的功能是进行java类型和数据库类型的转换<br>　　　　　　　// 如果根据parameterObject.getClass(）可以找到对应的类型，则替换             if (typeHandlerRegistry.hasTypeHandler(parameterObject.getClass())) {                 sql = sql.replaceFirst("\?", Matcher.quoteReplacement(getParameterValue(parameterObject)));               } else {                 MetaObject metaObject = configuration.newMetaObject(parameterObject);// MetaObject主要是封装了originalObject对象，提供了get和set的方法用于获取和设置originalObject的属性值,主要支持对JavaBean、Collection、Map三种类型对象的操作                 for (ParameterMapping parameterMapping : parameterMappings) {                     String propertyName = parameterMapping.getProperty();                     if (metaObject.hasGetter(propertyName)) {                         Object obj = metaObject.getValue(propertyName);                         sql = sql.replaceFirst("\?", Matcher.quoteReplacement(getParameterValue(obj)));                     } else if (boundSql.hasAdditionalParameter(propertyName)) {                         Object obj = boundSql.getAdditionalParameter(propertyName);  // 该分支是动态sql                         sql = sql.replaceFirst("\?", Matcher.quoteReplacement(getParameterValue(obj)));                     }else{sql=sql.replaceFirst("\?","缺失");}//打印出缺失，提醒该参数缺失并防止错位                 }             }         }         return sql;     }       @Override     public Object plugin(Object target) {         return Plugin.wrap(target, this);     }       @Override     public void setProperties(Properties properties) {             } }

　Mybatis配置文件如下：

<?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>
　　<！--该路径是拦截器文件的路径 dao.Interceptor是拦截器文件的包名称>


<plugins>


<plugin interceptor="dao.Interceptor.MybatisInterceptor">


</plugin>


</plugins>


<span style="color: #0000ff">&lt;</span><span style="color: #800000">environments </span><span style="color: #ff0000">default</span><span style="color: #0000ff">="development"</span><span style="color: #0000ff">&gt;</span></br>
    <span style="color: #0000ff">&lt;</span><span style="color: #800000">environment </span><span style="color: #ff0000">id</span><span style="color: #0000ff">="development"</span><span style="color: #0000ff">&gt;</span></br>
            <span style="color: #0000ff">&lt;</span><span style="color: #800000">transactionManager </span><span style="color: #ff0000">type</span><span style="color: #0000ff">="JDBC"</span><span style="color: #0000ff">&gt;</span></br>
                <span style="color: #0000ff">&lt;</span><span style="color: #800000">property </span><span style="color: #ff0000">name</span><span style="color: #0000ff">=""</span><span style="color: #ff0000"> value</span><span style="color: #0000ff">=""</span><span style="color: #0000ff">&gt;&lt;/</span><span style="color: #800000">property</span><span style="color: #0000ff">&gt;</span></br>
            <span style="color: #0000ff">&lt;/</span><span style="color: #800000">transactionManager</span><span style="color: #0000ff">&gt;</span>
            <span style="color: #0000ff">&lt;</span><span style="color: #800000">dataSource </span><span style="color: #ff0000">type</span><span style="color: #0000ff">="UNPOOLED"</span><span style="color: #0000ff">&gt;</span></br>
                <span style="color: #0000ff">&lt;</span><span style="color: #800000">property </span><span style="color: #ff0000">name</span><span style="color: #0000ff">="driver"</span><span style="color: #ff0000"> value</span><span style="color: #0000ff">="oracle.jdbc.driver.OracleDriver"</span><span style="color: #0000ff">&gt;&lt;/</span><span style="color: #800000">property</span><span style="color: #0000ff">&gt;</span>></br>
                <span style="color: #0000ff">&lt;</span><span style="color: #800000">property </span><span style="color: #ff0000">name</span><span style="color: #0000ff">="url"</span><span style="color: #ff0000"> value</span><span style="color: #0000ff">="jdbc:oracle:thin:@xx.xxx.xxx.xxx:端口:oratest"</span><span style="color: #0000ff">&gt;&lt;/</span><span style="color: #800000">property</span><span style="color: #0000ff">&gt;</span></br>
                <span style="color: #0000ff">&lt;</span><span style="color: #800000">property </span><span style="color: #ff0000">name</span><span style="color: #0000ff">="username"</span><span style="color: #ff0000"> value</span><span style="color: #0000ff">="用户名"</span><span style="color: #0000ff">&gt;&lt;/</span><span style="color: #800000">property</span><span style="color: #0000ff">&gt;</span></br>
                <span style="color: #0000ff">&lt;</span><span style="color: #800000">property </span><span style="color: #ff0000">name</span><span style="color: #0000ff">="password"</span><span style="color: #ff0000"> value</span><span style="color: #0000ff">="密码"</span><span style="color: #0000ff">&gt;&lt;/</span><span style="color: #800000">property</span><span style="color: #0000ff">&gt;</span></br></br>
            <span style="color: #0000ff">&lt;/</span><span style="color: #800000">dataSource</span><span style="color: #0000ff">&gt;</span></br>
    <span style="color: #0000ff">&lt;/</span><span style="color: #800000">environment</span><span style="color: #0000ff">&gt;</span></br>
<span style="color: #0000ff">&lt;/</span><span style="color: #800000">environments</span><span style="color: #0000ff">&gt;</span></br>

<span style="color: #0000ff">&lt;</span><span style="color: #800000">mappers</span><span style="color: #0000ff">&gt;</span>  <br><br>　　　　　　&lt;mapper resource="mybatis/UserMapper.xml"/&gt;</pre>

    </mappers>
</configuration>