mybaits3.2.8 别名包扫描通配符

<mybatis.version>3.2.8</mybatis.version>
<mybatis.spring.version>1.2.2</mybatis.spring.version>
<mybatis.generator.version>1.3.2</mybatis.generator.version>

MBG

http://www.mybatis.org/spring/apidocs/reference/org/mybatis/spring/SqlSessionFactoryBean.html

这几天搭建了spring4.1.2+mybatis3.2.8一个简单的框架。

发现mybatis的SqlSessionFactoryBean可以配置typeAliasesPackage属性，自动为domain起别名。

如果我的domain在不同包下面，那么这个配置不支持通配符扫描包路径？如下改造：

改造前：applicationContext.xml配置：

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="configLocation" value="classpath:/SqlMapConfig.xml"></property>
<property name="mapperLocations" value="classpath*:/sqlmaps/**/*-sql.xml"></property>
<property name="typeAliasesPackage" value="com.demo.domain" />
</bean>

改造后：applicationContext.xml配置：

<bean id="sqlSessionFactory" class="com.demo.core.mybatis.TQSqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="configLocation" value="classpath:/SqlMapConfig.xml"></property>
<property name="mapperLocations" value="classpath*:/sqlmaps/**/*-sql.xml"></property>
<property name="typeAliasesPackage" value="com.demo.**.domain" />
</bean>

com.demo.core.mybatis.TQSqlSessionFactoryBean类源码：

package com.demo.core.mybatis;
import java.io.File;
import java.io.IOException;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;
import com.demo.core.utils.StringUtil;
/**
* @ClassName: TQSqlSessionFactoryBean
* @Description: mybatis自动扫描别名路径（新增通配符匹配功能）
* @author wangxiaohu wsmalltiger@163.com
* @date 2014年12月9日上午9:36:23
*/
public class TQSqlSessionFactoryBean extends SqlSessionFactoryBean {
Logger logger = LoggerFactory.getLogger(getClass());
private static final String ROOT_PATH = "com" + File.separator + "demo"
+ File.separator;
private static final String ROOT_PATH_SPLIT = ",";
private static final String[] PATH_REPLACE_ARRAY = { "]" };
public void setTypeAliasesPackage(String typeAliasesPackage) {
if (!StringUtil.isStringAvaliable(typeAliasesPackage)) {
super.setTypeAliasesPackage(typeAliasesPackage);
return;
}
ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
StringBuffer typeAliasesPackageStringBuffer = new StringBuffer();
try {
for (String location : typeAliasesPackage.split(",")) {
if (!StringUtil.isStringAvaliable(location)) {
continue;
}
location = "classpath*:"
+ location.trim().replace(".", File.separator);
typeAliasesPackageStringBuffer.append(getResources(resolver,
location));
}
} catch (IOException e) {
logger.error(e.getMessage(), e);
}
if ("".equals(typeAliasesPackageStringBuffer.toString())) {
throw new RuntimeException(
"mybatis typeAliasesPackage 路径扫描错误！请检查applicationContext.xml@sqlSessionFactory配置！");
}
typeAliasesPackage = replaceResult(
typeAliasesPackageStringBuffer.toString()).replace(
File.separator, ".");
super.setTypeAliasesPackage(typeAliasesPackage);
}
private String getResources(ResourcePatternResolver resolver,
String location) throws IOException {
StringBuffer resourcePathStringBuffer = new StringBuffer();
for (Resource resource : resolver.getResources(location)) {
String description = resource == null ? "" : resource
.getDescription();
if (!StringUtil.isStringAvaliable(resource.getDescription())
|| description.indexOf(ROOT_PATH) == -1) {
continue;
}
resourcePathStringBuffer.append(
description.substring(description.indexOf(ROOT_PATH)))
.append(ROOT_PATH_SPLIT);
}
return resourcePathStringBuffer.toString();
}
private String replaceResult(String resultStr) {
for (String replaceStr : PATH_REPLACE_ARRAY) {
resultStr = resultStr.replace(replaceStr, "");
}
return resultStr;
}
}

题外话：

typeAliasesPackage配置路径下的domain中可以添加@org.apache.ibatis.type.Alias(value = "user")注解；如果添加此注解，则别名使用此注解所指定的名称。如果没有配置，则默认为类名首字母小写。

http://blog.csdn.net/wsmalltiger/article/details/41825375

巴特西

mybaits3.2.8 别名包扫描通配符

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