ExecutorPluginUtils.java
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package com.tianbo.analysis.intercept;
import com.tianbo.analysis.annotation.DataPermission;
import org.apache.ibatis.mapping.BoundSql;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.mapping.SqlCommandType;
import org.apache.ibatis.mapping.SqlSource;
import org.apache.ibatis.plugin.Invocation;
import org.apache.ibatis.reflection.DefaultReflectorFactory;
import org.apache.ibatis.reflection.MetaObject;
import org.apache.ibatis.reflection.factory.DefaultObjectFactory;
import org.apache.ibatis.reflection.wrapper.DefaultObjectWrapperFactory;
import java.lang.reflect.Method;
import java.lang.reflect.Type;
import java.sql.SQLException;
import java.util.Arrays;
import java.util.Objects;
public class ExecutorPluginUtils {
/**
* 获取sql语句
* @param invocation
* @return
*/
public static String getSqlByInvocation(Invocation invocation) {
final Object[] args = invocation.getArgs();
MappedStatement ms = (MappedStatement) args[0];
Object parameterObject = args[1];
BoundSql boundSql = ms.getBoundSql(parameterObject);
return boundSql.getSql();
}
/**
* 包装sql后，重置到invocation中
* @param invocation
* @param sql
* @throws SQLException
*/
public static void resetSql2Invocation(Invocation invocation, String sql) throws SQLException {
final Object[] args = invocation.getArgs();
MappedStatement statement = (MappedStatement) args[0];
Object parameterObject = args[1];
BoundSql boundSql = statement.getBoundSql(parameterObject);
MappedStatement newStatement = newMappedStatement(statement, new BoundSqlSqlSource(boundSql));
MetaObject msObject = MetaObject.forObject(newStatement, new DefaultObjectFactory(), new DefaultObjectWrapperFactory(),new DefaultReflectorFactory());
msObject.setValue("sqlSource.boundSql.sql", sql);
args[0] = newStatement;
}
private static MappedStatement newMappedStatement(MappedStatement ms, SqlSource newSqlSource) {
MappedStatement.Builder builder =
new MappedStatement.Builder(ms.getConfiguration(), ms.getId(), newSqlSource, ms.getSqlCommandType());
builder.resource(ms.getResource());
builder.fetchSize(ms.getFetchSize());
builder.statementType(ms.getStatementType());
builder.keyGenerator(ms.getKeyGenerator());
if (ms.getKeyProperties() != null && ms.getKeyProperties().length != 0) {
StringBuilder keyProperties = new StringBuilder();
for (String keyProperty : ms.getKeyProperties()) {
keyProperties.append(keyProperty).append(",");
}
keyProperties.delete(keyProperties.length() - 1, keyProperties.length());
builder.keyProperty(keyProperties.toString());
}
builder.timeout(ms.getTimeout());
builder.parameterMap(ms.getParameterMap());
builder.resultMaps(ms.getResultMaps());
builder.resultSetType(ms.getResultSetType());
builder.cache(ms.getCache());
builder.flushCacheRequired(ms.isFlushCacheRequired());
builder.useCache(ms.isUseCache());
return builder.build();
}
/**
* 是否标记为区域字段
* @return
*/
public static boolean isAreaTag( MappedStatement mappedStatement) throws ClassNotFoundException {
String id = mappedStatement.getId();
//获取类名
String className = id.substring(0, id.lastIndexOf("."));
Class clazz = Class.forName(className);
//获取方法名
String methodName = id.substring(id.lastIndexOf(".") + 1);
//这里是博主工作需求，防止pagehelper那里未生效
if(methodName.contains("_COUNT")){
methodName=methodName.replace("_COUNT","");
}
String m=methodName;
Class<?> classType = Class.forName(id.substring(0,mappedStatement.getId().lastIndexOf(".")));
//获取对应拦截方法名
String mName = mappedStatement.getId().substring(mappedStatement.getId().lastIndexOf(".") + 1);
//这里是博主工作需求，防止pagehelper那里未生效
if(mName.contains("_COUNT")){
mName=mName.replace("_COUNT","");
}
boolean ignore = false;
//获取该类(接口)的所有方法,如果你查询的方法就写在该类，就不需要下面的if判断
Method[] declaredMethods = classType.getDeclaredMethods();
Method declaredMethod = Arrays.stream(declaredMethods).filter(it -> it.getName().equals(m)).findFirst().orElse(null);
//该判断是拿到该接口的超类的方法，博主的查询方法就在超类里，因此需要利用下面代码来获取对应方法
if (declaredMethod == null) {
Type[] genericInterfaces = clazz.getGenericInterfaces();
declaredMethod = Arrays.stream(genericInterfaces).map(e ->
{
Method[] declaredMethods1 = ((Class) e).getDeclaredMethods();
return Arrays.stream(declaredMethods1).filter(it -> it.getName().equals(m)).findFirst().orElse(null);
}).filter(Objects::nonNull).findFirst().orElse(null);
}
if(declaredMethod!=null){
//查询方法是否被permission标记注解
ignore = declaredMethod.isAnnotationPresent(DataPermission.class);
}
return ignore;
}
/**
* 是否标记为区域字段
* @return
*/
public static boolean isAreaTagIngore( MappedStatement mappedStatement) throws ClassNotFoundException {
String id = mappedStatement.getId();
String className = id.substring(0, id.lastIndexOf("."));
Class clazz = Class.forName(className);
String methodName = id.substring(id.lastIndexOf(".") + 1);
Class<?> classType = Class.forName(id.substring(0,mappedStatement.getId().lastIndexOf(".")));
//获取对应拦截方法名
String mName = mappedStatement.getId().substring(mappedStatement.getId().lastIndexOf(".") + 1);
boolean ignore = false;
Method[] declaredMethods = classType.getDeclaredMethods();
Method declaredMethod = Arrays.stream(declaredMethods).filter(it -> it.getName().equals(methodName)).findFirst().orElse(null);
if (declaredMethod == null) {
Type[] genericInterfaces = clazz.getGenericInterfaces();
declaredMethod = Arrays.stream(genericInterfaces).map(e ->
{
Method[] declaredMethods1 = ((Class) e).getDeclaredMethods();
return Arrays.stream(declaredMethods1).filter(it -> it.getName().equals(methodName)).findFirst().orElse(null);
}).filter(Objects::nonNull).findFirst().orElse(null);
}
ignore = declaredMethod.isAnnotationPresent(DataPermission.class);
return ignore;
}
public static String getOperateType(Invocation invocation) {
final Object[] args = invocation.getArgs();
MappedStatement ms = (MappedStatement) args[0];
SqlCommandType commondType = ms.getSqlCommandType();
if (commondType.compareTo(SqlCommandType.SELECT) == 0) {
return "select";
}
return null;
}
// 定义一个内部辅助类，作用是包装sq
static class BoundSqlSqlSource implements SqlSource {
private BoundSql boundSql;
public BoundSqlSqlSource(BoundSql boundSql) {
this.boundSql = boundSql;
}
@Override
public BoundSql getBoundSql(Object parameterObject) {
return boundSql;
}
}
}