Java开发快递物流项目(3)

基础设置模块一:

1.  收派标准模块

a.  根据实体类生成对应的表,在父工程中配置相应的pom文件

b.  applicationContext.xml中做好相应的配置,注解开发不要忘记包扫描,事物的注解管理

c.  前台页面通过Jquery Easyui编写好相应的代码

d.  后台功能的实现(增加功能,分页查询功能,收派标准修改功能)

e. 选中一行进行修改前台代码的实现

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.Actions;
import org.apache.struts2.convention.annotation.Namespace;
import org.apache.struts2.convention.annotation.ParentPackage;
import org.apache.struts2.convention.annotation.Result;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.stereotype.Controller;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;

import cn.bos.domain.base.Standard;
import cn.bos.service.base.StandardService;

@ParentPackage("json-default")
@Namespace("/")
@Controller
@Scope("prototype")
public class StandardAction extends ActionSupport
		implements ModelDriven {

	// 模型驱动
	private Standard standard = new Standard();

	@Override
	public Standard getModel() {
		return standard;
	}

	// 注入service对象
	@Autowired
	private StandardService standardService;

	@Action(value = "standard_save", results = {
			@Result(name = "success", type = "redirect", location = "./pages/base/standard.html") })
	public String save() {
		System.out.println("添加收派标准");
		standardService.save(standard);
		return SUCCESS;
	}

	// 属性驱动
	private int page;
	private int rows;

	public void setPage(int page) {
		this.page = page;
	}

	public void setRows(int rows) {
		this.rows = rows;
	}

	// 分页列表查询
	@Action(value = "standard_pageQuery", results = {
			@Result(name = "success", type = "json") })
	public String pageQuery() {
		// 调用业务层,查询数据结果
		Pageable pageable = new PageRequest(page - 1, rows);
		Page pageData = standardService.findPageData(pageable);

		// 返回客户端数据需要total和rows
		Map result = new HashMap<>();
		result.put("total", pageData.getNumberOfElements());
		result.put("rows", pageData.getContent());

		// 将map转换为json数据返回,使用struts2-json-plugin插件
		ActionContext.getContext().getValueStack().push(result);

		return SUCCESS;

	}
	
	
	//查询所有收派标准方法
	@Action(value="standard_findAll",
			results= {@Result(name="success",type="json")})
	public String findAll() {
		List standards = standardService.findAll();
		ActionContext.getContext().getValueStack().push(standards);;
		return SUCCESS;
	}

}

id : 'button-edit',
	text : '修改',
	iconCls : 'icon-edit',
	handler : function() {
	  // 获取当前datagrid选中数据 
	  var rows = $("#grid").datagrid('getSelections');
	if (rows.length != 1) {
	  // 没选 或 多选 
	  $.messager.alert("提示信息", "修改数据时，只能选中一行", "warning");
	} else {
	  // 只选中一行 
	  var row = rows[0];
	  // 进行表单回显操作 
	  $("#standardForm").form('load', row);
	  // 显示窗口
	  $("#standardWindow").window('open');
	}
   }
} 

            总结:

1.注解开发注入属性的时候不要忘记写@Autowired

2.Action处理请求时,转发回页面会显示空白,设置Type=”redirect”重定向回页面解决问题

3.datagrid分页时,pageRequest的page页码从0开始Pageable pageable = new PageRequest(page - 1, rows);

2. 快递员管理模块

a) 快递员添加功能实现

b) 快递员分页列表查询(无条件分页与有条件分页)

c) 快递员作废功能

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Join;
import javax.persistence.criteria.JoinType;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;

import org.apache.commons.lang3.StringUtils;
import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.Namespace;
import org.apache.struts2.convention.annotation.ParentPackage;
import org.apache.struts2.convention.annotation.Result;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.domain.Specification;
import org.springframework.stereotype.Controller;

import cn.bos.domain.base.Courier;
import cn.bos.domain.base.Standard;
import cn.bos.service.base.CourierService;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;

@ParentPackage("json-default")
@Namespace("/")
@Controller
@Scope("prototype")
public class CourierAction extends ActionSupport implements
		ModelDriven {

	// 模型驱动
	private Courier courier = new Courier();

	@Override
	public Courier getModel() {
		return courier;
	}

	// 注入Service
	@Autowired
	private CourierService courierService;

	// 添加快递员方法
	@Action(value = "courier_save", results = { @Result(name = "success", location = "./pages/base/courier.html", type = "redirect") })
	public String save() {
		courierService.save(courier);
		return SUCCESS;
	}

	// 属性驱动接收客户端分页参数
	private int page;
	private int rows;

	public void setPage(int page) {
		this.page = page;
	}

	public void setRows(int rows) {
		this.rows = rows;
	}

	// 分页查询方法
	@Action(value = "courier_pageQuery", results = { @Result(name = "success", type = "json") })
	public String pageQuery() {
		// 封装Pageable对象
		Pageable pageable = new PageRequest(page - 1, rows);
		// 封装条件查询对象 Specification
		Specification specification = new Specification() {
			@Override
			// Root 用于获取属性字段，CriteriaQuery可以用于简单条件查询，CriteriaBuilder 用于构造复杂条件查询
			public Predicate toPredicate(Root root,
					CriteriaQuery query, CriteriaBuilder cb) {
				List list = new ArrayList();

				// 简单单表查询
				if (StringUtils.isNotBlank(courier.getCourierNum())) {
					Predicate p1 = cb.equal(
							root.get("courierNum").as(String.class),
							courier.getCourierNum());
					list.add(p1);
				}
				if (StringUtils.isNotBlank(courier.getCompany())) {
					Predicate p2 = cb.like(
							root.get("company").as(String.class),
							"%" + courier.getCompany() + "%");
					list.add(p2);
				}
				if (StringUtils.isNotBlank(courier.getType())) {
					Predicate p3 = cb.equal(root.get("type").as(String.class),
							courier.getType());
					list.add(p3);
				}
				// 多表查询
				Join standardJoin = root.join("standard",
						JoinType.INNER);
				if (courier.getStandard() != null
						&& StringUtils.isNotBlank(courier.getStandard()
								.getName())) {
					Predicate p4 = cb.like(
							standardJoin.get("name").as(String.class), "%"
									+ courier.getStandard().getName() + "%");
					list.add(p4);
				}
				return cb.and(list.toArray(new Predicate[0]));
			}
		};

		// 调用业务层 ，返回 Page
		Page pageData = courierService.findPageData(specification,
				pageable);
		// 将返回page对象 转换datagrid需要格式
		Map result = new HashMap();
		result.put("total", pageData.getTotalElements());
		result.put("rows", pageData.getContent());
		// 将结果对象 压入值栈顶部
		ActionContext.getContext().getValueStack().push(result);

		return SUCCESS;
	}

	// 属性驱动
	private String ids;

	public void setIds(String ids) {
		this.ids = ids;
	}

	// 作废快递员
	@Action(value = "courier_delBatch", results = { @Result(name = "success", location = "./pages/base/courier.html", type = "redirect") })
	public String delBatch() {
		// 按,分隔ids
		String[] idArray = ids.split(",");
		// 调用业务层，批量作废
		courierService.delBatch(idArray);

		return SUCCESS;
	}
}