XML配置详解

select * from user info

<context id="Mysql" targetRuntime="MyBatis3Simple" defaultModelType="flat">
    <property name="autoDelimitKeywords" value="true"/>
    <property name="beginningDelimiter" value="`"/>
    <property name="endingDelimiter" value="`"/>
</context>

<plugin type="org.mybatis.generator.plugins.CachePlugin">
    <property name="cache_eviction" value="LRU" />
    <property name="cache_size" value="1024" />
</plugin>

<cache eviction="LRU" size="1024">
<!--
    WARNING - @mbggenerated
    This element is automatically generated by MyBatis Generator,do not modify.
-->
</cache>

<commentGenerator>
    <property name="suppressDate" value="true"/>
    <property name="addRemarkComments" value="true"/>
</commentGenerator>

/**
* Database Column Remarks:
*   角色名
*
* This field was generated by MyBatis Generator.
* This field corresponds to the database column sys_role.role_name
*
* @mbggenerated
*/
private String roleName;

package tk.mybatis.generator;

import static org.mybatis.generator.internal.util.StringUtility.isTrue;

import java.util.Properties;

import org.mybatis.generator.api.IntrospectedColumn;
import org.mybatis.generator.api.IntrospectedTable;
import org.mybatis.generator.api.dom.java.Field;
import org.mybatis.generator.config.PropertyRegistry;
import org.mybatis.generator.internal.DefaultCommentGenerator;
import org.mybatis.generator.internal.util.StringUtility;

/**
 * 自己实现的注释生成器
 */
public class MyCommentGenerator extends DefaultCommentGenerator {
	/**
	 * 由于默认实现类中的可配参数都没有提供给子类可以访问的方法，这里要定义一遍
	 */
    private boolean suppressAllComments;

    /**
     * 同上
     */
    private boolean addRemarkComments;

    /**
     * 设置用户配置的参数
     */
    public void addConfigurationProperties(Properties properties) {
    	//先调用父类方法保证父类方法可以正常使用
    	super.addConfigurationProperties(properties);
    	//获取 suppressAllComments 参数值
        suppressAllComments = isTrue(properties
        		.getProperty(PropertyRegistry.COMMENT_GENERATOR_SUPPRESS_ALL_COMMENTS));
        //获取 addRemarkComments 参数值
        addRemarkComments = isTrue(properties
        		.getProperty(PropertyRegistry.COMMENT_GENERATOR_ADD_REMARK_COMMENTS));
    }

    /**
     * 给字段添加注释信息
     */
	public void addFieldComment(Field field,
            IntrospectedTable introspectedTable,
            IntrospectedColumn introspectedColumn) {
		//如果阻止生成所有注释，直接返回
        if (suppressAllComments) {
            return;
        }
        //文档注释开始
        field.addJavaDocLine("/**");
        //获取数据库字段的备注信息
        String remarks = introspectedColumn.getRemarks();
        //根据参数和备注信息判断是否添加备注信息
        if (addRemarkComments && StringUtility.stringHasValue(remarks)) {
            String[] remarkLines = remarks.split(System.getProperty("line.separator"));
            for (String remarkLine : remarkLines) {
                field.addJavaDocLine(" * " + remarkLine);
            }
        }
        //由于 Java 对象名和数据库字段名可能不一样，注释中保留数据库字段名
        field.addJavaDocLine(" * " + introspectedColumn.getActualColumnName());
        field.addJavaDocLine(" */");
    }
}

<commentGenerator type="tk.mybatis.generator.MyCommentGenerator">
    <property name="suppressDate" value="true"/>
    <property name="addRemarkComments" value="true"/>
</commentGenerator>

/**
* 角色名
* role_name
*/
private String roleName;

<jdbcConnection driverClass="com.mysql.jdbc.Driver"
                connectionURL="jdbc:mysql://localhost:3306/mybatis2?characterEncoding=utf8"
                userId="root"
                password="root">
</jdbcConnection>

<jdbcConnection driverClass="com.mysql.jdbc.Driver"
                connectionURL="jdbc:mysql://localhost:3306/mybatis2?characterEncoding=utf8"
                userId="root"
                password="root">
    <property name="remarksReporting" value="true" />
</jdbcConnection>

<javaTypeResolver>
    <property name="forceBigDecimals" value="false" />
</javaTypeResolver>

public void setUsername(String username) {
    this.username = username == null ? null : username.trim();
}

<javaModelGenerator targetPackage="test.model" targetProject="src\main\java">
    <property name="enableSubPackages" value="false" />
    <property name="trimStrings" value="false"/>
</javaModelGenerator>

<sqlMapGenerator targetPackage="test.xml" targetProject="E:\MyProject\src\main\resources" >
    <property name="enableSubPackages" value="false" />
</sqlMapGenerator>

<javaClientGenerator type="XMLMAPPER" targetPackage="test.dao" targetProject="src\main\java" />