spring mvc框架流程.doc

1. JSP页面上有个按钮被按 按钮ID为customInfoChangeHistory写一个如下JS （按钮单击事件）/客户信息更改历史$(#customInfoChangeHistory).click(function() var urlStr = new $.Template($contextPath ); var urlParam = customerId: customer_id, taskId: taskId; var CustomInfoChangeHistory = urlStr.expand(urlParam); window.open(CustomInfoChangeHistory); );其中$.Template($contextPath );调用名字为CUSTOMER_INFO_HISTORY_INDEX 的 Controller是一个JAVA类。var urlParam = customerId: customer_id, taskId: taskId;是传入到Controller的值.2Controller如下/* * Title: queryCustomerHistory * Description:查询 客户历史记录 * return 返回视图 * author Leon.Qiu 2010-11-8 下午05:02:13 */RequestMapping(value = Url.CUSTOMER_INFO_HISTORY_INDEX, method = RequestMethod.GET)public String queryCustomerHistory(PathVariable final long customerId, PathVariable final long taskId, final ModelMap map) map.addAttribute(customerId, customerId);map.addAttribute(taskId, taskId);return Views.MAIN_CUSTOMER_HISTORY_VIEW;Url.CUSTOMER_INFO_HISTORY_INDEX与上面名字同3该Controller会调用相应的SERVICESSERVICES如下：/* * Title: getGroupAndCampaignStatus * Description: 根据任务ID获取组别和活动状态 * param taskId 任务ID * return 返回组别和活动状态Map * author Leon.Qiu 2010-11-2 下午04:22:12 */Transactional(timeout = 3, isolation = Isolation.READ_COMMITTED, propagation = Propagation.REQUIRED, readOnly = true)public Map getGroupAndCampaignStatus(long taskId) return customerInfoDAO.selectByGroupAndCampaignStatus(taskId);Services中如果 需要调用数据库 会调用DAO4DAO使用如下/* * Title: selectByGroupAndCampaignStatus * Description: 根据TaskId判断返回Task是否可执行状态 * param taskId 任务的ID * return 返回组别和活动的任务状态 * author Leon.Qiu 2010-11-1 下午08:47:04 */SuppressWarnings(unchecked)public Map selectByGroupAndCampaignStatus(long taskId) return (Map) getSqlMapClientTemplate().queryForObject(CUSTOMER_INBOUND.getGroupAndCampaignStatus, taskId);其中 getSqlMapClientTemplate().queryForObject(CUSTOMER_INBOUND.getGroupAndCampaignStatus, taskId);会查找CustomerInBound_SqlMap.xml文件中 该文件 配置名字为 即上面使用到的名字CUSTOMER_INBOUND找到此文件中名为getGroupAndCampaignStatus的SQL语句 如下select t1.customer_id as customerId, t1.customer_code as customerCode, as name, t1.gender as gender, t1.birth_date as birthDate, t1.certi_type as certiType, t1.certi_code as certiCode, t1.address as address, t1.zip as zip, t1.cellphone as cellphone, t1.tel_area as telArea, t1.tel as tel, t1.email as email, t1.extra_tel as extraTel, t1.license_code as licenseCode, t1.certifi_time as certifiTime, t1.remark as remark, t1.dont_disturb as dontDisturb, 1 as source from tbl_crm_customer_info t1 t1.customer_id=#customerId#t1.customer_code=#customerCode#其中 resultClass=mon.model.CustomerInfo 为定义好的CustomerInfo model即实体类 实体类中字段必须与查询字段 一一对应这样查询的结果即会以存在model里的状态返回.一般是多个model，返回后用LIST或者MAP一个个接收保存。5DAO的结果返回SERVICES再返回 Cotroller Cotroller中public String main(ModelMap model, HttpServletRequest request) model.addAttribute(taskIsEmpty, false);model.addAttribute(pendingTaskId, taskId);通过model.addAttribute把返回的数据保存下来相当于（request,session）将来传到跳转页面中。如果有需要跳转的页面 就会在Cotoller方法中返回一个String 如下return Views.MAIN_VIEW;然后会到 Views.JAVA中根据相应字段找到响应页面字段如下：public interface Views /* * Fields MAIN_VIEW : 电