二 配置数据字典&异步查询客户

数据字典：

• 字典表和客户表的关系
• 配置字典表
• 配置客户表
• Spring管理映射文件

1 字典表和客户表的关系

2 配置字典表

3  配置客户表

4  Spring管理映射文件

异步查询客户：

页面加载的时候，callback函数将对应信息字典表id，通过callback回调函数传给Action,action调用业务层，业务层调用DAO从数据库里面将需要的数据，再由Action传给页面。

• 前端页面
• Action
• Service
• DAO

1 前端交互：

2 Action:

package com.mycrm.web.action;

import java.io.IOException;
import java.util.List;

import org.apache.logging.log4j.core.config.json.JsonConfiguration;
import org.apache.struts2.ServletActionContext;

import com.mycrm.domain.BaseDict;
import com.mycrm.service.BaseDictService;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;

import net.sf.json.JSONArray;
import net.sf.json.JsonConfig;

/*
 * 字典的Action
 */
public class BaseDictAction extends ActionSupport implements ModelDriven<BaseDict> {
    // 模型驱动
    private BaseDict baseDict = new BaseDict();

    @Override
    public BaseDict getModel() {
        return baseDict;
    }

    //注入Service
    private BaseDictService baseDictService;

    public void setBaseDictService(BaseDictService baseDictService) {
        this.baseDictService = baseDictService;
    }

    //根据类型名称查询字典的方法，findByTypeCode
    public String findByTypeCode() throws IOException{
        System.out.println("BasedictAction中的findByTypeCode方法执行了");
        List<BaseDict> list = baseDictService.findByTypeCode(baseDict.getDict_type_code());
        //将list转成JSON，引入包   jsonlib/fastjson
        /**
         * JSONConfig:转JSON的配置对象
         * JSONArray: 将数组和list集合转成JSON
         * JSONObject: 将对象和MAP集合转成JSON
         */
        //jsonConfig.setExcludes去掉不必要的字段
        JsonConfig jsonConfig = new JsonConfig();
        jsonConfig.setExcludes(new String[]{"dict_sort","dict_enable","dict_memo"});
        JSONArray jsonArray = JSONArray.fromObject(list,jsonConfig);
        //将JSON打印到页面：
        ServletActionContext.getResponse().setContentType("text/html;charset=utf-8");
        ServletActionContext.getResponse().getWriter().println(jsonArray.toString());
        return NONE;
    }

}

3 Service:

package com.mycrm.service.impl;

import java.util.List;

import com.mycrm.dao.BaseDictDao;
import com.mycrm.domain.BaseDict;
import com.mycrm.service.BaseDictService;

/**
 *
 * 字典业务层的实现类
 */
public class BaseDictServiceImpl implements BaseDictService {
    // 注入Dao
    private BaseDictDao baseDictDao;

    public void setBaseDictDao(BaseDictDao baseDictDao) {
        this.baseDictDao = baseDictDao;
    }

    @Override
    public List<BaseDict> findByTypeCode(String dict_type_code) {
        return baseDictDao.findByTypeCode(dict_type_code) ;
    }

}

4 DAO：

package com.mycrm.dao.impl;

import java.util.List;

import org.springframework.orm.hibernate5.support.HibernateDaoSupport;

import com.mycrm.dao.BaseDictDao;
import com.mycrm.domain.BaseDict;

public class BaseDictDaoImpl extends HibernateDaoSupport implements BaseDictDao {

    @Override
    public List<BaseDict> findByTypeCode(String dict_type_code) {
         return (List<BaseDict>) this.getHibernateTemplate().find("from BaseDict where dict_type_code=?", dict_type_code);
    }

}