PageHelper无效问题解决

1、如果你使用的是 springBoot 那么应该引入下面的依赖 （版本号自己确定）

 <groupId>com.github.pagehelper</groupId>
 <artifactId>pagehelper-spring-boot-starter</artifactId>

2、SpringMvc里面引入下面的依赖（版本号自己确定）

<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>

3、如果你非要在SpringBoot中引入下面这种，那么你需要配置一个拦截器

<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>

PageInterceptor

import org.apache.ibatis.cache.CacheKey;
import org.apache.ibatis.executor.Executor;
import org.apache.ibatis.mapping.BoundSql;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.plugin.Intercepts;
import org.apache.ibatis.plugin.Signature;
import org.apache.ibatis.session.ResultHandler;
import org.apache.ibatis.session.RowBounds;

import java.util.Properties;

@Intercepts(
    {
    
    
        @Signature(type = Executor.class, method = "query", args = {
    
    MappedStatement.class, Object.class, RowBounds.class, ResultHandler.class}),
        @Signature(type = Executor.class, method = "query", args = {
    
    MappedStatement.class, Object.class, RowBounds.class, ResultHandler.class, CacheKey.class, BoundSql.class}),
    }
)
public class PageInterceptor extends com.github.pagehelper.PageInterceptor{
    
    

	public PageInterceptor(){
    
    
		super();
		Properties properties = new Properties();
		properties.setProperty("dialect", "com.github.pagehelper.PageHelper");
		setProperties(properties);
	}
}

我们是在多数据源配置的时候加上的，你可以根据实际情况来。

    public DataSource primaryDataSource() {
    
    
        DataSource ds =  DataSourceBuilder.create().build();
	ADOSessionImpl session = new ADOSessionImpl();
	//开启/关闭-自动转换驼峰标识
	SessionFactory.setMapUnderscoreToCamelCase(true);
        session.addInterceptor("_default", "com.koron.util.PageInterceptor");
	session.registeDataSourceMap("_default", ds);
        return ds;
    }