作者: kent鹏
转载请注明出处: http://www.cnblogs.com/xieyupeng/p/7145599.html
一、新增客户
1.数据字典
用于枚举项目中有限个数的字典项
(1)表中数据字典与其他表的关系:
建表语句:
CREATE TABLE `base_dict` (
`dict_id` varchar(32) NOT NULL COMMENT '数据字典id(主键)',
`dict_type_code` varchar(10) NOT NULL COMMENT '数据字典类别代码',
`dict_type_name` varchar(64) NOT NULL COMMENT '数据字典类别名称',
`dict_item_name` varchar(64) NOT NULL COMMENT '数据字典项目名称',
`dict_item_code` varchar(10) DEFAULT NULL COMMENT '数据字典项目(可为空)',
`dict_sort` int(10) DEFAULT NULL COMMENT '排序字段',
`dict_enable` char(1) NOT NULL COMMENT '1:使用 0:停用',
`dict_memo` varchar(64) DEFAULT NULL COMMENT '备注',
PRIMARY KEY (`dict_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
(2)映射文件配置
客户实体中引用数据字典对象:
//引用关联的数据字典对象
private BaseDict cust_source; //客户来源 cust_source.dict_id
private BaseDict cust_industry; //客户行业
private BaseDict cust_level; //客户级别
将数据字典对象在映射文件中配置:
<!-- 多对一 -->
<many-to-one name="cust_source" column="cust_source" class="BaseDict" ></many-to-one>
<many-to-one name="cust_industry" column="cust_industry" class="BaseDict" ></many-to-one>
<many-to-one name="cust_level" column="cust_level" class="BaseDict" ></many-to-one>
2.使用ajax技术在页面加载字典下拉选
//使用ajax加载数据字典,生成select
//参数1: 数据字典类型 (dict_type_code)
//参数2: 将下拉选放入的标签id
//参数3: 生成下拉选时,select标签的name属性值
//参数4: 需要回显时,选中哪个option
function loadSelect(typecode,positionId,selectname,selectedId){
//1 创建select对象,将name属性指定
var $select = $("<select name="+selectname+" ></select>");
//2 添加提示选项
$select.append($("<option value='' >---请选择---</option>"));
//3 使用jquery 的ajax 方法,访问后台Action
$.post("${pageContext.request.contextPath}/BaseDictAction", { dict_type_code:typecode},
function(data){
//遍历
//4 返回json数组对象,对其遍历
$.each( data, function(i, json){
// 每次遍历创建一个option对象
var $option = $("<option value='"+json['dict_id']+"' >"+json["dict_item_name"]+"</option>"); if(json['dict_id'] == selectedId){
//判断是否需要回显 ,如果需要使其被选中
$option.attr("selected","selected");
}
//并添加到select对象
$select.append($option);
});
},"json"); //5 将组装好的select对象放入页面指定位置
$("#"+positionId).append($select);
}
add.jsp
$(document).ready(function(){
loadSelect("006","level","cust_level.dict_id");
loadSelect("001","industry","cust_industry.dict_id");
loadSelect("009","source","cust_source.dict_id");
});
</script>
BaseDictAction:
public class BaseDictAction extends ActionSupport { private String dict_type_code; private BaseDictService baseDictService;
@Override
public String execute() throws Exception {
//1 调用Service根据typecode获得数据字典对象list
List<BaseDict> list = baseDictService.getListByTypeCode(dict_type_code);
//2 将list转换为 json格式
String json = JSONArray.fromObject(list).toString();
//3 将json发送给浏览器
ServletActionContext.getResponse().setContentType("application/json;charset=utf-8");
ServletActionContext.getResponse().getWriter().write(json);
return null;//告诉struts2不需要进行结果处理
} public String getDict_type_code() {
return dict_type_code;
}
public void setDict_type_code(String dict_type_code) {
this.dict_type_code = dict_type_code;
} public void setBaseDictService(BaseDictService baseDictService) {
this.baseDictService = baseDictService;
}
}
BaseDictServiceImpl:
public class BaseDictServiceImpl implements BaseDictService { private BaseDictDao bdd; @Override
public List<BaseDict> getListByTypeCode(String dict_type_code) {
return bdd.getListByTypeCode(dict_type_code);
} public void setBdd(BaseDictDao bdd) {
this.bdd = bdd;
}
}
BaseDictDaoImpl:
public class BaseDictDaoImpl extends BaseDaoImpl<BaseDict> implements BaseDictDao { @Override
public List<BaseDict> getListByTypeCode(String dict_type_code) {
//Criteria //创建离线查询对象
DetachedCriteria dc = DetachedCriteria.forClass(BaseDict.class);
//封装条件
dc.add(Restrictions.eq("dict_type_code", dict_type_code));
//执行查询
List<BaseDict> list = (List<BaseDict>) getHibernateTemplate().findByCriteria(dc); return list;
}
}
struts.xml
<!-- 数据字典Action -->
<action name="BaseDictAction" class="baseDictAction" method="execute" ></action>
applicationContext.xml
<bean name="baseDictAction" class="cn.xyp.web.action.BaseDictAction" scope="prototype" >
<property name="baseDictService" ref="baseDictService" ></property>
</bean> <bean name="baseDictService" class="cn.xyp.service.impl.BaseDictServiceImpl" >
<property name="bdd" ref="baseDictDao" ></property>
</bean> </bean>
<bean name="baseDictDao" class="cn.xyp.dao.impl.BaseDictDaoImpl" >
<!-- 注入sessionFactory -->
<property name="sessionFactory" ref="sessionFactory" ></property>
</bean>
3.分析实现新增客户
二、在新增客户中加入文件上传
1.文件上传页面3个要求
<!-- 文件上传页面3个要求:
1.表单必须post提交
2.表单提交类型enctype.必须多段式.
3.文件上传使用<input type="file" /> 组件
-->
<FORM id=form1 name=form1
action="${pageContext.request.contextPath }/CustomerAction_add"
method="post" enctype="multipart/form-data" >
2.后台接收(记得生成getset方法)
//上传的文件会自动封装到File对象
//在后台提供一个与前台input type=file组件 name相同的属性
private File photo;
//在提交键名后加上固定后缀FileName,文件名称会自动封装到属性中
private String photoFileName;
//在提交键名后加上固定后缀ContentType,文件MIME类型会自动封装到属性中
private String photoContentType;
使用:
public String add() throws Exception {
if(photo!=null){
System.out.println("文件名称:"+photoFileName);
System.out.println("文件类型:"+photoContentType);
//将上传文件保存到指定位置
photo.renameTo(new File("E:/upload/haha.jpg"));
}