MyBatis Generator实现分页插件

<dependencies>
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.5</version>
<scope>provided</scope>
</dependency>
</dependencies>

public class PaginationPlugin extends PluginAdapter {

public boolean validate(List<String> list) {
return true;
}

/**
* 为每个Example类添加limit和offset属性已经set、get方法
*/
@Override
public boolean modelExampleClassGenerated(TopLevelClass topLevelClass,
IntrospectedTable introspectedTable) {

PrimitiveTypeWrapper integerWrapper = FullyQualifiedJavaType.getIntInstance()
.getPrimitiveTypeWrapper();

Field limit = new Field();
limit.setName("limit");
limit.setVisibility(JavaVisibility.PRIVATE);
limit.setType(integerWrapper);
topLevelClass.addField(limit);

Method setLimit = new Method();
setLimit.setVisibility(JavaVisibility.PUBLIC);
setLimit.setName("setLimit");
setLimit.addParameter(new Parameter(integerWrapper, "limit"));
setLimit.addBodyLine("this.limit = limit;");
topLevelClass.addMethod(setLimit);

Method getLimit = new Method();
getLimit.setVisibility(JavaVisibility.PUBLIC);
getLimit.setReturnType(integerWrapper);
getLimit.setName("getLimit");
getLimit.addBodyLine("return limit;");
topLevelClass.addMethod(getLimit);

Field offset = new Field();
offset.setName("offset");
offset.setVisibility(JavaVisibility.PRIVATE);
offset.setTy
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pe(integerWrapper);
topLevelClass.addField(offset);

Method setOffset = new Method();
setOffset.setVisibility(JavaVisibility.PUBLIC);
setOffset.setName("setOffset");
setOffset.addParameter(new Parameter(integerWrapper, "offset"));
setOffset.addBodyLine("this.offset = offset;");
topLevelClass.addMethod(setOffset);

Method getOffset = new Method();
getOffset.setVisibility(JavaVisibility.PUBLIC);
getOffset.setReturnType(integerWrapper);
getOffset.setName("getOffset");
getOffset.addBodyLine("return offset;");
topLevelClass.addMethod(getOffset);

return true;
}

/**
* 为 Mapper.xml 的 selectByExample 添加 limit
*/
@Override
public boolean sqlMapSelectByExampleWithoutBLOBsElementGenerated(XmlElement element,
IntrospectedTable introspectedTable) {
addPageElement(element);
return true;
}

/**
* 为 Mapper.xml 的 selectByExampleWithBLOBs 添加 limit
*/
@Override
public boolean sqlMapSelectByExampleWithBLOBsElementGenerated(XmlElement element,
IntrospectedTable introspectedTable) {
addPageElement(element);
return true;
}

private void addPageElement(XmlElement element) {
XmlElement ifLimitNotNullElement = new XmlElement("if");
ifLimitNotNullElement.addAttribute(new Attribute("test", "limit != null"));

XmlElement ifOffsetNotNullElement = new XmlElement("if");
ifOffsetNotNullElement.addAttribute(new Attribute("test", "offset != null"));
ifOffsetNotNullElement.addElement(new TextElement("limit ${offset}, ${limit}"));
ifLimitNotNullElement.addElement(ifOffsetNotNullElement);

XmlElement ifOffsetNullElement = new XmlElement("if");
ifOffsetNullElement.addAttribute(new Attribute("test", "offset == null"));
ifOffsetNullElement.addElement(new TextElement("limit ${limit}"));
ifLimitNotNullElement.addElement(ifOffsetNullElement);

element.addElement(ifLimitNotNullElement);
}
}

<build>
<finalName>${project.artifactId}</finalName>
<plugins>
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.5</version>
<configuration>
<overwrite>true</overwrite>
</configuration>
<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.34</version>
</dependency>
<dependency>
<groupId>****</groupId>
<artifactId>near-mybatis-generator-extends</artifactId>
<version>1.0.0</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
"http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">

<generatorConfiguration>

<context id="mysql_systemcore" targetRuntime="MyBatis3">

<plugin type="org.***.plugins.PaginationPlugin"/>

<commentGenerator>
<property name="suppressAllComments" value="true"/>
</commentGenerator>

<jdbcConnection driverClass="com.mysql.jdbc.Driver"
connectionURL="jdbc:mysql://192.168.1.45:3306/***"
userId="***"
password="***"/>

<javaModelGenerator targetPackage="com.***.dal.dataobj"
targetProject="src/main/java">
<property name="trimStrings" value="true"/>
</javaModelGenerator>

<sqlMapGenerator targetPackage="sqlmap"
targetProject="src/main/resources/META-INF"/>

<javaClientGenerator targetPackage="com.***.dal.mapper"
targetProject="src/main/java" type="XMLMAPPER"/>
<!--
<table tableName="usr_wechat_user"
domainObjectName="WechatUser"
enableDeleteByPrimaryKey="false"
enableDeleteByExample="false"
enableCountByExample="false"/>
-->
<table tableName="user_info"
domainObjectName="UserInfoDO"/>

</context>
</generatorConfiguration>