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1
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/* 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>
<environments default="development">
<environment id="development">
<transactionManager type="JDBC">
<property name="" value=""></property>
</transactionManager> <dataSource type="UNPOOLED">
<property name="driver" value="oracle.jdbc.driver.OracleDriver"></property>>
<property name="url" value="jdbc:oracle:thin:@xx.xxx.xxx.xxx:端口:oratest"></property>
<property name="username" value="用户名"></property>
<property name="password" value="密码"></property>
</dataSource>
</environment>
</environments>
<mappers>
<mapper resource="mybatis/UserMapper.xml"/>
</mappers>
</configuration>
|
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
|
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
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101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
<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>
<environments default="development">
<environment id="development">
<transactionManager type="JDBC">
<property name="" value=""></property>
</transactionManager> <dataSource type="UNPOOLED">
<property name="driver" value="oracle.jdbc.driver.OracleDriver"></property>>
<property name="url" value="jdbc:oracle:thin:@xx.xxx.xxx.xxx:端口:oratest"></property>
<property name="username" value="用户名"></property>
<property name="password" value="密码"></property>
</dataSource>
</environment>
</environments>
<mappers>
<mapper resource="mybatis/UserMapper.xml"/>
</mappers>
</configuration>