完成搜索系统功能（十七）将数据导入索引库功能

1.导入数据到索引库

导入的数据中包含了三个表的内容：

1.1 sql语句

SELECT

        a.id,

        a.title,

        a.sell_point,

        a.price,

        a.image,

        b.`name` category_name,

        c.item_desc

FROM

        tb_item a

LEFT JOIN tb_item_cat b ON a.cid = b.id

LEFT JOIN tb_item_desc c ON a.id = c.item_id

1.2 dao层（因为是多表查询，所以这里不能使用mybatis逆向工程中的mapper）

需要创建一个mapper接口+mapper映射文件。名称相同且在同一目录下。

itemMapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.jingxi.search.mapper.ItemMapper" >
    
    <select id="getItemList" resultType="com.jingxi.search.pojo.Item">
        SELECT
            a.id,
            a.title,
            a.sell_point,
            a.price,
            a.image,
            b. NAME category_name
        FROM
            tb_item a
        LEFT JOIN tb_item_cat b ON a.cid = b.id
    </select>

</mapper>

 

1.3 service层

package com.jingxi.search.service;

import java.util.List;

import org.apache.solr.client.solrj.SolrServer;
import org.apache.solr.common.SolrInputDocument;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.jingxi.common.pojo.JingXiResult;
import com.jingxi.common.util.ExceptionUtil;
import com.jingxi.search.mapper.ItemMapper;
import com.jingxi.search.pojo.Item;

@Service
public class ItemServiceImpl implements ItemService {

    @Autowired
    private ItemMapper itemMapper;
    
    @Autowired
    private SolrServer solrServer;

    @Override
    public JingXiResult importAllItems() {
        
        try {
            //查询商品列表
            List<Item> list = itemMapper.getItemList();
            //把商品信息写入索引库
            for (Item item : list) {
                //创建一个SolrInputDocument对象
                SolrInputDocument document = new SolrInputDocument();
                document.setField("id", item.getId());
                document.setField("item_title", item.getTitle());
                document.setField("item_sell_point", item.getSell_point());
                document.setField("item_price", item.getPrice());
                document.setField("item_image", item.getImage());
                document.setField("item_category_name", item.getCategory_name());
                document.setField("item_desc", item.getItem_des());
                //写入索引库
                solrServer.add(document);
            }
            //提交修改
            solrServer.commit();
        } catch (Exception e) {
            e.printStackTrace();
            return JingXiResult.build(500, ExceptionUtil.getStackTrace(e));
        }
        return JingXiResult.ok();
    }

}

 1.4 controller层

package com.jingxi.search.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.jingxi.common.pojo.JingXiResult;
import com.jingxi.search.service.ItemService;

@Controller
public class ItemController {

    @Autowired
    private ItemService itemService;
    
    @RequestMapping("/manager/importall")
    @ResponseBody
    public JingXiResult imporeAllitem(){
        JingXiResult result=itemService.importAllItems();
        return result;
    }

}

 1.5 item实体类

package com.jingxi.search.pojo;

public class Item {
    
    private String id;
    private String title;
    private String sell_point;
    private long price;
    private String image;
    private String category_name;
    private String item_des;
    public String getId() {
        return id;
    }
    public void setId(String id) {
        this.id = id;
    }
    public String getTitle() {
        return title;
    }
    public void setTitle(String title) {
        this.title = title;
    }
    public String getSell_point() {
        return sell_point;
    }
    public void setSell_point(String sell_point) {
        this.sell_point = sell_point;
    }
    public long getPrice() {
        return price;
    }
    public void setPrice(long price) {
        this.price = price;
    }
    public String getImage() {
        return image;
    }
    public void setImage(String image) {
        this.image = image;
    }
    public String getCategory_name() {
        return category_name;
    }
    public void setCategory_name(String category_name) {
        this.category_name = category_name;
    }
    public String getItem_des() {
        return item_des;
    }
    public void setItem_des(String item_des) {
        this.item_des = item_des;
    }

    
}

 至此，导入数据到索引库的服务完成~

2.在jingxi-backend中调用jingxi-reach中的服务

效果展示：

调用服务的链接：

service层：

controller层：

jsp页面：

import-index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<div>
    <a class="easyui-linkbutton" onclick="importIndex()">导入数据到索引库</a>
</div>
<script type="text/javascript">
    function importIndex(){
        $.post("index/import",null,function(data){
            if(data.status==200){
                $.messager.alert('提示','导入数据到索引库成功');
            }else{
                $.messager.alert('提示','导入数据到索引库失败');
            }
    });

}
</script>